How is galvanizing done?

Galvanizing a car body at home

If noticeable pockets of corrosion have formed on the body of your truck or car, but they are still not through, you need to take immediate action. As practice shows, if you do not stop body corrosion in time, the cost of subsequent repairs to your car will be many times higher. For this reason, you can’t hesitate!

In recent years, many motorists have noticed: even in large densely populated cities, road services mercilessly use salt. As a result, the bodies rot to holes in literally two to three years.

To resist the rusting process and the aggressive effects of road reagents, there is a very simple but effective way - do-it-yourself galvanizing of the body.

Galvanizing a car is carried out in order to protect the body once and for all from the formation of annoying “saffron caps”, as well as to prevent the further spread of corrosion throughout the body.

The zinc “crust” on the surface of the metal creates a kind of barrier that protects the steel from negative factors and the destructive effects of an aggressive environment. The zinc-based coating effectively resists the effects of salts, chemicals and moisture.

Please note that you can galvanize both a part of the car body (fender, trunk, hood, etc.) and any individual part. And this will require direct hands, certain knowledge, a specific set of materials and tools, as well as the desire to give your car additional strength.

How to galvanize a body yourself

The “home” method of galvanizing metal allows you to prevent the formation of corrosion on the car body and thereby reduce service costs. Liquid galvanizing can also be used for various metal products to further protect them from rust.

It must be said right away that this method is very simple and does not require large financial costs. In fact, this is the well-known Zinkor car, but with your own hands. This miracle remedy will be written in detail below, as the article progresses.

Preparatory work

This method involves the use of phosphoric acid with zinc dissolved in it, and will also require zinc (salt) batteries. You can use both small finger batteries and large batteries - in this case it all depends on the amount of work being done.

If you need to galvanize a large surface area on your car, then it is better to take large zinc batteries. First, you need to “print” them all and remove all the excess braiding.

If you wish, you can also use only the casing of a salt battery, after removing the graphite core and soot, but in principle you can leave all the “internals” in place.

On the body of the “bare” galvanized battery, on one side you need to secure a cotton pad with an elastic band, and on the other side (also using a regular rubber band) - the power wire. You can use a car battery or a suitable power supply as a power source.

How does galvanizing of a surface occur?

If you don't know how to galvanize correctly, read the short instructions first.

The “minus” from the car battery must be connected directly to the part of the body (or part) that you are going to galvanize with the battery - that is, using the battery.

We connect the wire that goes to the zinc body of the battery to the positive terminal of the battery. Please note that the negative terminal should never be disconnected, because the desired effect will not be obtained.

Before starting galvanizing, it is advisable to clean the surface to be treated from traces of rust, if any. You need to take orthophosphoric acid with zinc dissolved in it into a syringe and soak a cotton pad that is placed on the body of the salt battery. After this, you just need to move the “nozzle” over the entire area of ​​the surface being treated.

The most important thing is not to stop. If you keep the battery in one place for a long time, then burns appear, and if you move continuously over the surface, you get a neat and even layer of zinc. You will see the result almost from the first seconds.

Although some people call this method of galvanizing a car “artisanal,” it is truly a proven, simplest and, most importantly, effective way to combat corrosion. And, as an option, you can use a ready-made camping kit - a car kit for galvanizing Zinkor auto.

Using this product, you can quickly localize particularly advanced areas of rust, as well as remove all traces of corrosion on the car body. Galvanic galvanization allows you to reliably protect the metal surface from the reappearance of “saffron caps”.

Method of galvanizing metal using “white powder”

Typically, for galvanizing small areas of metal surfaces, phosphoric acid and a galvanized battery casing are most often used. However, for better processing, it is better to use soldering acid instead of phosphoric acid. It is hydrochloric acid in which zinc is dissolved. It is believed that the galvanization of the body in this case will be deeper and more durable.

You can purchase soldering acid at almost any radio electronics store. But it’s not entirely convenient that soldering acid for soldering at home is sold only in small bottles.

Therefore, if you need large volumes of soldering acid for galvanizing, it can be made at home from “white powder” - zinc chloride, which is sold by weight.

Main stages of work

Pour zinc chloride into a suitable container, then add distilled water and mix until a clear liquid consistency is formed (note that you need to wear rubber gloves when working with chemicals). From 1 kg of zinc chloride, approximately 3.5 liters of finished soldering acid are obtained.

The result is a galvanic bath, in which, if necessary, pieces of sheet steel and entire metal parts can be galvanized.

For further work, you will need a galvanized battery case and an iron bolt, at the ends of which cotton fabric must be secured with rubber bands.

The part that needs to be galvanized must first be thoroughly cleaned of rust with a grinder, using a cleaning disc with a metal brush. Before galvanizing, the metal must be “activated” - the oxide film must be removed from the surface using electricity.

How to activate metal

To do this, the positive terminal from the charger must be connected directly to the workpiece, and the negative terminal through a 20-watt light bulb to the electrode. A bolt with a cotton cloth at the end is used as an electrode, which must be moistened in soldering acid or electrolyte.

After applying current, we treat the surface of the part; as a result, the product is better cleaned of oxides. Only after this procedure can you begin directly processing the car - galvanizing the car body.

Galvanizing a car body with a battery in a garage

According to the good old tradition, pockets of corrosion on the body appear after the winter period, when the roads are sprinkled with reagent. To stop rust and prevent through corrosion, you need to stop this process as quickly as possible. And galvanizing the car will help in this situation.

For self-galvanizing you will need salt batteries, the body of which is made of zinc, a wire and a battery. A small piece of rag moistened with soldering acid is placed on the battery, and it is connected through a wire to the positive terminal of the battery. The made device must be pressed against the source of corrosion and moved carefully from side to side.

As a result of all manipulations, a film of silver coating appears on the metal surface instead of rust. An important addition to the work done will be the neutralization of the remaining acid, which can be extinguished with a solution of baking soda and water.

These are the simple “folk” methods used to perform the technology of galvanizing a car body with your own hands using the galvanic method. By the way, we forgot to mention another good product with which you can easily and quickly galvanize a metal surface - Tsinkar for cars.

For more information on how to stop rust on a car body with your own hands, you can watch a video tutorial that talks about all the nuances of galvanizing a car body at home using a battery and other methods accessible to the common driver.

Rate this post

Source: https://sdelairukami.ru/samyj-prostoj-i-effektivnyj-metod-tsinkovaniya-avtomobilya/

Galvanic galvanizing at home: what is required, sequence of steps, feasibility of self-processing, video

  page » Metalworking - galvanizing » Galvanic galvanizing

Galvanic galvanizing in production conditions. Photo PKF Color

Galvanizing metal using the galvanization method is a useful and interesting process. quite easy to do it at home , especially in situations where it’s more rational to do everything yourself and save money at the same time. Before starting work, it is important to understand the essence of the process .

When is it more profitable to do it yourself than to order a service?

Considering that the galvanic galvanizing method is expensive, in some cases it is reasonable to create a small chemical laboratory at home and do everything yourself. You can use the method at home :

Small parts after zinc treatment. Photo EnergoStal

• for small metal parts , the size of which will allow them to be immersed in a container with a zinc solution;
• for decorating metal surfaces;
• treat the most vulnerable areas of the car body or small areas of other metal structures.

What you will need

For the galvanic galvanizing method at home, you will need the following devices and substances:

• current source. This could be a charger or a car battery. Its parameters should be in the range from 2 to 6 A and from 6 to 12 V;
• zinc sulfate – 200 g;
• ammonium or magnesium sulfate – 50 g;

Reference. Performers have the opportunity to purchase equipment for galvanic galvanizing by contacting employees of the companies that are presented in the section “Where to buy equipment (on credit, leasing).”

• sodium acetate – 15 g;
• water – 1 l.;
• container into which the parts will be immersed;
• wires for connecting to a power source.

Important. During work, be sure to use protective equipment (respirator, rubber gloves and exhaust device).

Galvanizing can be divided into the following stages :

• First of all, the solution is prepared in a glass container of a suitable size;
• the zinc solution is heated to a temperature ranging from 18 to 25 degrees;
• after this, the anodes are immersed in the solution, which are connected to the positive on the current source;
• At a safe distance from the zinc solution, fix the product that needs to be galvanized, and connect the “negative” wire (cathode) to it;
• after this, the galvanization process should begin, in which a zinc composition is deposited on the product through the negative wire.

Important. The current should not exceed 1 A, otherwise the coating will be of poor quality.

Source: https://ipmet.ru/galvanicheskoe-cinkovanie-v-domashnix-usloviyax/

Metal galvanizing

Today, a large number of methods have been created to protect against corrosion. They are aimed at ensuring that, with the help of special solutions or substances, a thin protective film appears on the surface of metal products, which prevents oxygen and products present in an aggressive environment from reaching the metal. Galvanizing of metal surfaces is one of the most effective methods of preventing the appearance of corrosive plaque.

Metal galvanizing process

Metal galvanizing is the procedure of applying a thin layer of zinc to the surface of a metal product. This metal is excellent for creating solutions that are designed to protect against corrosion. It belongs to the category of resistant to the influence of aggressive environments. This method of protecting metal surfaces from rust gives the treated surface:

• strength and hardness,
•  resistance to temperature changes,
• resistance to the influence of aggressive environments,
• longer service life,
• the ability not to undergo oxidation.

Metal galvanizing price

Attention: Galvanizing metal surfaces is an inexpensive procedure. The price of galvanizing metal in our country depends on its type and the amount of material being processed. The average price is from 16,000 rubles per five tons. This amount can reach 30,000 rubles.

Today galvanizing is a fairly popular procedure. Its action is based on the fact that a thin film appears on the metal surface under the influence of a zinc alloy, which completely covers the surface. It prevents the formation of corrosion on the metal, which destroys the structure of the metal and renders metal products unusable.

Due to the action of oxygen and liquid substances, a corrosive film appears on the metal surface. The metal becomes more porous and oxygen penetrates into its deeper layers, which leads to the growth of corrosion.

A coating of rust appears on the surface of the iron, which makes the metal structure more susceptible to the passage of air. The oxidation process occurs over a long period of time.

The zinc alloy film does not allow oxygen to penetrate into the deep layers of metals. Thanks to this, the process of their oxidation becomes impossible.

Metal galvanizing technology

Metal galvanizing technology involves complete coating of any types of metal products with a zinc film. This procedure requires special equipment made from materials that can withstand aggressive environments.

Galvanizing of metal surfaces is carried out in several stages:

At this stage, work with the material occurs. To do this, it is first degreased and various contaminants are removed from the surface. After this, the metal is etched using an acidic medium. The most commonly used solution is sulfuric acid. As a result, an oxide film appears on the metal. It is necessary for the best adhesion of zinc and the metal being processed. After this, all acid residues are removed and the surface is thoroughly dried.

• Zinc alloy deposition process.

This stage involves applying a zinc film to the dried metal surface. To do this, zinc is melted in a bath at a temperature of at least 450 degrees Celsius. Only after this the metal product that needs to be processed is immersed there. The procedure lasts several minutes.

At this stage, the finished product is dried at room temperature.

As a result of the procedure, a dense film is formed on the metal surface. It makes it more durable and hard.

Galvanizing of metal products is carried out in specialized baths. They must be equipped with a device for connecting electrical current if necessary. Their volume may vary. However, any such bath can accommodate a large number of small metal products for processing.

Galvanizing baths are divided into:

• small-sized structures,
• medium-sized structures,
• large-sized structures.

Types of metal galvanizing

In the modern world, galvanizing is used to treat metal surfaces. It serves primarily to protect against corrosion. Different metals require different methods of this process. This is due to the fact that not all metals are able to adhere to zinc under certain conditions.

The main methods of galvanizing metal are presented in the following ways:

This method differs from all others in that it does not require a special bath. The zinc alloy solution is applied in the same way as any paint coating.

This procedure involves lowering a metal product into a bath of zinc alloy for processing. The galvanizing process occurs under the influence of slight heating. This allows the solution to be applied to the surface more evenly.

This method is characterized by the fact that the entire procedure occurs under the influence of electric current. Metal is dropped into the electrolyte solution and an electric current is connected, supplying a small voltage.

It consists of applying a zinc alloy of any thickness to the metal surface. It is determined by the customer. Special containers are used for the procedure.

Table 1. Comparison of zinc with other metals

Metal name Brief description Metal property Application

Aluminum	silver-white metal	Melting point 650°C. Aluminum is resistant to atmospheric corrosion due to the formation of a dense oxide film on its surface. The most important feature of aluminum is its low density - 2.7 g/cm3 versus 7.8 g/cm3 for iron and 8.94 g/cm3 for copper. Has good thermal and electrical conductivity. Handles well under pressure.	It is used in the electrical industry for the manufacture of current conductors, in the food and chemical industries. It is used as a deoxidizer in steel production, for aluminizing parts to increase their heat resistance. It is rarely used in its pure form due to its low strength - 50 MPa.
Chromium	a shiny non-ferrous metal with a bluish tint, similar in specific gravity to iron. It is quite hard (one less than diamond), however, fragile.	It is quite hard, but nevertheless fragile. Melting point 1910 °C. Resistant to oxidation in atmosphere and water. Nitric acid does not dissolve it. It dissolves gradually in solutions of hydrochloric and sulfuric acids, but more actively in strong hydrochloric acid. Chrome is quite strong against abrasion.	In its pure form, chromium is widely used for decorative and anti-corrosion coating of other metals. In industry, chromium is widely used for the production of high-strength alloyed chromium steels.
Copper	red metal, pink when broken	has high ductility and corrosion resistance, high electrical and thermal conductivity (100% pure copper standard, then 65% aluminum, 17% iron), as well as resistance to atmospheric corrosion	Allows its use as a roofing material for critical buildings
Titan (Te)	light metal of silvery-white color.	has a high melting point, low thermal conductivity and poor anti-friction properties, but is easily forged and stamped. When heated to 500 °C in air, it does not oxidize, and at higher temperatures a strong protective film forms on its surface.	Therefore, titanium and its alloys are used to make the skin of supersonic aircraft, jet engine compressors, in a turbo structure - shovels and turbine disks, etc. From sheet titanium it is possible to make (using argon welding) lightweight mufflers for cars that do not rust or burn out.

Table 2. Comparison of zinc with non-ferrous metals

ConditionsMetalsBrassCopperZinc-titaniumSteel in polymers

UV resistance	*****	*****	*****	***
High temperature resistance	*****	*****	****	***
Corrosion resistance	*****	*****	*****	****
Resistance to mechanical stress	****	****	****	**
Soldering	*****	*****	***	—
Folding	****	*****	*****	****
Weight	*****	*****	*****	***
Price	****	****	*****	**
Life time	****	*****	****	***

Source: http://lkmprom.ru/clauses/tekhnologiya/tsinkovanie-metalla-tekhnologiya-i-metody/

Do-it-yourself metal galvanizing

Steel products are used in all areas of human life. Durable and reliable, they bring benefit and convenience for a long time. But steel products have a dangerous enemy - rust, which can render them unusable. There are many ways to protect against it. One of the popular ones is galvanizing the metal.

Metal galvanizing

Features of the galvanizing procedure and the main methods of metal protection

Metal corrosion, or the process of its oxidation, is especially intensified in conditions of high humidity. To prevent corrosion of metal products, protective coatings are applied to them.

Galvanizing of metal is considered one of the most reliable, since zinc takes on the effects of aggressive environments. Galvanizing provides not only barrier, but also electrochemical protection of the metal.

During the reaction, an oxide layer appears on the surface of the part, which provides additional protection.

After mechanical destruction of the coating, the effect of the protective layer ceases. There are various types of metal galvanizing, many of them require complex and expensive equipment, but some can also be used at home.

Galvanized pipes

Galvanizing technology was first mastered in France in the 18th century and further developed in England. Domestic scientists Jacobi and Mendeleev made a great contribution to improving the process. Today, galvanizing metal is one of the most affordable ways to protect against corrosion.

Galvanizing methods

Metalworking specialists distinguish the following methods for applying zinc coatings to metals:

• hot;
• cold;
• electrochemical, or galvanic;
• gas-thermal;
• thermal diffusion.

The application method is selected based on the following criteria:

• conditions for using the part;
• thickness of the protective layer;
• durability;
• special protection requirements.

The thickness of the layer is determined by the time the part is in the working environment and the temperature in the working area. When designing a technological process, it should be borne in mind that mechanical processing after coating the part with zinc will destroy the protective layer.

This method is distinguished by the high quality of the resulting metal coating. However, its distribution is limited by the following disadvantages:

• complex and energy-intensive equipment;
• high temperatures;
• extremely harmful production waste;
• the size of the processed products is limited by the dimensions of the zinc bath.

First, a block of preparatory operations is performed:

• mechanical cleaning;
• degreasing;
• etching in an acidic environment;
• washing and flux treatment;
• drying.

Hot galvanizing

Only after this does the actual galvanizing begin. The prepared parts are lowered into a bath of molten zinc. A thin layer consisting of Fe and Zn compounds appears on their surface. Next, the parts are taken out of the bath and blown with air under high pressure. This allows you to remove excess zinc and at the same time dries the part.

Due to the complexity of the process and harmful working conditions, it is not used at home.

Cold galvanizing

This method is technologically much simpler. It can be reproduced at home. A layer of zinc-containing substance is applied to the workpiece using a brush or roller.

To protect workpieces of particularly complex shapes and topography, spray guns are used. Compositions for cold galvanizing of metal are polymer solutions based on fine-grained zinc powder.

The most commonly used is zinconol, which creates a corrosion-protecting layer on the surface with a 90% Zn content.

Cold galvanizing is also used in industry to protect already assembled parts and structures - for example, power line supports.

Cold galvanizing

The method is also used to restore partially damaged anti-corrosion coatings, for example, as a result of wear or repair work.

The disadvantage of this method of coating metal with zinc is the low mechanical strength of the coating.

Galvanic method

The electrochemical method allows you to obtain a durable and smooth layer. During the process, you can control the thickness of the applied metal layer. The quality very much depends on the degree of degreasing of the workpiece.

Galvanization of parts occurs as follows. Protected workpieces and zinc plates - donors are lowered into a bath of electrolyte, and voltage is applied to them. The current flowing in the resulting circuit, using the phenomenon of electrochemical metal transfer, pulls zinc atoms from the plates and deposits them on the workpieces.

Galvanic galvanizing

The disadvantages of the method are the high cost, which consists of the cost of plates, electrolyte and electricity. In addition, you will have to incur high costs for decontamination of the spent electrolyte.

Thermal diffusion galvanizing

The technology was developed in the early 19th century, but only recently gained widespread popularity. The workpieces to be protected are placed in a sealed container, into which dry powder containing zinc is added. Next, the container is heated to high temperatures (400-900 °C). The zinc evaporates and its vapors are deposited on the surface of the product. Preparation of workpieces is carried out in the same way as in the case of hot-dip galvanizing.

The advantages of this method are as follows:

• low environmental hazard;
• low porosity;
• high mechanical and anti-corrosion resistance (several times higher than with the galvanic method);
• there is no need for waste disposal.

Thermal diffusion galvanizing

The disadvantages include:

• the coating turns out dull, gray and does not decorate the product;
• low productivity;
• harmful working conditions.

The uniformity of the thickness of the zinc coating layer also leaves much to be desired.

Gas thermal spraying of zinc

The method is used for processing large-sized products, steel sheets, etc. Zinc is transferred to the prepared surface of the workpiece by a jet of burning gas. A zinc wire is placed in the flame of a gas burner, it melts and droplets of metal fall on the workpiece, forming a scale-like layer on it.

Gas thermal galvanizing

The method is used in combination with the application of anti-corrosion paints and varnishes and is very effective for protecting the hulls of sea vessels and coastal structures.

How to perform the procedure at home

Galvanizing at home is most often carried out using the galvanic or cold method. First of all, you need to degrease the workpieces, pickle them with an acid solution and rinse thoroughly with water.

A galvanizing installation will require the following materials and equipment:

• Battery 6-12 V, 2-6 A (any car or motorcycle). Instead of a battery, you can use a charger of sufficient power.
• Bath made of non-conductive material (plexiglass, textolite, etc.)
• Suspension system: conductive rods and hooks.
• Switching devices and wires.
• Ammeter and rheostat.
• Electrolyte - any zinc-containing salt. You can take a car electrolyte and dissolve zinc powder in it.
• Zinc plates.

The rods are placed across the bathtub, the plate parts are suspended from them, after which the wires from the battery are connected through an ammeter and a rheostat. When carrying out galvanizing with your own hands, keep in mind that the thickness of the layer is determined by such parameters as:

• current strength;
• electrolyte temperature;
• electrolyte density

Affects the thickness and total surface area of ​​the workpiece.

, please select a piece of text and press Ctrl+Enter.

Source: https://steelfactoryrus.com/tsinkovanie-metalla-svoimi-rukami/

Galvanizing metal at home

Any metal product, no matter how high-quality steel it is made of, sooner or later dies, poisoned by corrosion.

There are many ways to combat corrosion, including chemical, mechanical, and electrochemical methods of protection. Each of them is effective in its own way, each of them, however, has its own profitability.

The most optimal method of protecting steel from rust in terms of price/effectiveness ratio has become galvanizing. We'll talk about this process today.

:

• Painting and galvanizing of metal, as necessary
• Hot galvanizing of metal
• Gas-thermal galvanizing method
• Thermo-diffuse and galvanic galvanization
• Cold galvanizing

Painting and galvanizing of metal, as necessary

A strong and stable metal that can withstand crazy loads and is used everywhere, is absolutely helpless against corrosion if the appropriate treatment is not carried out.

Galvanization is one type of protection of metal surfaces from rust, and its main advantage is efficiency and reasonable price. The same can be said about most methods used for galvanizing.

Zinc itself is valuable because, as a result of interaction with oxygen, it forms a fairly strong and stable film, an oxide coating, which protects steel from environmental influences.

Metal can be galvanized in several ways:

1.  Thermal diffusion method.
2.  Cold galvanized.
3. Galvanic galvanization.
4.  Hot galvanizing.
5. Gas thermal spraying.

Galvanizing metal at home can be carried out either using one method or in a complex manner. It all depends on the conditions in which the surface operates and on the qualities of the protective layer that need to be achieved. When choosing a galvanizing method, the desired thickness of the zinc is taken into account, and this already affects the temperature and duration of the process. However, galvanized surfaces have some limitations in use, and the most important of them is the lack of direct mechanical impact.

Hot galvanizing of metal

In terms of general industrial volumes of metal galvanizing, hot galvanizing takes almost the first place. This is due to the very high durability of the coating obtained in this way. Its use only at home is hardly possible, since the process is quite complex, costly and unfavorable from the point of view of environmental safety. Equipment for hot-dip galvanizing is expensive and inaccessible.

Hot galvanizing occurs by immersing the part in a container with liquid zinc, molten at a temperature of 500 to 4500 ° C. Naturally, in a simple household, it is quite difficult to obtain such a coating. In addition, the preparation of the metal surface requires certain exposure to chemical processes, which can be harmful to health if strict protective measures are not taken.

Gas-thermal galvanizing method

Galvanizing using this algorithm is carried out by spraying. This method is good only in cases where it is necessary to process large surfaces and in large batches. Otherwise, the profitability of this method will be questionable. Galvanization using the gas-thermal method is carried out by spraying powdered zinc or zinc in the form of a thin wire. Zinc is supplied to the metal in molten and sprayed form.

It is used in cases where the dimensions of the product do not allow it to be placed in a bath of liquid zinc, most often these are large-sized metal structures. After galvanizing, the metal surface is a porous coating, and the pores are most often filled with paint and varnish material.

Due to its strength properties and resistance to aggressive environments, this combined coating is considered one of the most durable and can preserve metal even in salt water for 25-35 years.

Thermo-diffuse and galvanic galvanization

During thermal-diffuse galvanizing of metals, a protective coating is obtained on the basis of atomic bonds between zinc and iron atoms, resulting in the formation of a durable zinc alloy with a complex structure. This effect can only be achieved when the zinc enters the evaporation phase, and this is possible only at a temperature of at least 2500 ° C. The peculiarity of the process is that it takes place in a closed volume, is completely safe for health, and the zinc layer can be up to 100 microns.

Galvanic galvanizing allows you to obtain a smooth and uniform coating with a precisely maintained layer thickness. As a rule, the thickness of the coating does not exceed 40 microns, but from an aesthetic point of view, this coating is one of the most successful. The galvanizing process is no different from other electrochemical processes in which positively charged particles move from the surface of the zinc to the surface of the workpiece.

Cold galvanizing

This is the most affordable type of galvanizing, since from the point of view of application technology it is no different from conventional painting. The part is painted with a special zinc-containing primer material, which contains up to 90% zinc in its structure.

Firstly, it is good because it can be used in any conditions, including garages and small workshops, and secondly, galvanizing metal, the price of which is tens of times lower than the above methods, can be used in cases where the use of other methods is impossible for various reasons reasons.

Its durability, however, is rather mediocre when compared with other galvanizing methods.

Of the above methods, only the last two can be used at home, however, they help fight corrosion quite effectively. So, not all is lost and any metal structure can be provided with a long life and practical appearance.

Source: https://www.spets-stroy-portal.ru/doma-i-dachi/cinkovanie-metalla-v-domashnih-uslovijah.html

How to galvanize metal with your own hands

Galvanizing metal in a modern car is an opportunity to protect the body surface from corrosion. Galvanizing metal with your own hands at home is a completely feasible task.

There are certain types of metal that, when in contact with air, form a protective film on the surface. It protects the material from environmental influences and prevents corrosion. On metal, which is used to produce cars, the film is weak, so it is not able to protect the product from destruction.

Industrial processing methods

You can create additional protection against corrosion in several ways, for example, by coating products with tin or zinc. Galvanizing a material is a fairly simple task and can be easily done with your own hands. Treatment of parts, for example for a car, will protect the surface of the products from direct contact with air, which prevents oxidation of the surface. Metal processing with zinc is possible in several ways:

• Hot and cold galvanizing.
• Galvanic.
• Gas-thermal.
• Thermal diffusion.

When processing a material using one of these methods, the duration and temperature of the process affect the thickness of the protective surface layer formed.

Hot-dip galvanizing technology

This method of metal processing is one of the most effective. Zinc remains on the surface for a long time and reliably protects against corrosion. The disadvantage of this treatment is that this technology is harmful to the environment since the material is processed chemically. Hot galvanizing of metal consists of several subsequent processes:

• Preparation. The surface of the parts must be degreased, and then the metal must be etched.
• Treatment. After preparation, the machine part must be washed and dried.
• Galvanizing. The product is lowered into a tank containing molten zinc.

This processing method, despite its effectiveness, has significant disadvantages:

• Galvanizing metal requires special equipment and containers.
• Impossibility of processing large-sized products, for example, car bodies.

Cold galvanizing technology

Galvanizing car parts using this method is quite simple. Surface treatment is carried out using a special paint containing zinc. The metal surface is painted with zinc paint using the usual painting method: with a brush, roller or spray gun.

Using zinc-containing powder paint and a spray gun makes galvanizing a vehicle easier. The spray gun allows you to completely treat the entire surface of the body, including hard-to-reach places. This method is most often used to apply a protective coating to products that are difficult to hot process. The car body is just such a case. This method is also used for processing previously galvanized metal.

Article on the topic: Statute of limitations for traffic police fines

Galvanizing technology

Galvanic deposition of zinc involves processing the metal using electrochemical action. Processing with this method allows you to achieve a smooth and thin protective layer on the surface of the product.

In order for the zinc to adhere to the surface, for example, of a car body, the products are placed in a special container in which a zinc plate is located.

After this, electricity is supplied to the container, as a result of which the zinc from the surface of the plate is transferred to the machine body, forming a protective layer.

The disadvantages of this method include its high cost compared to other methods of applying a protective layer. In addition, such treatment is dirty and wastewater treatment also requires high costs.

Source: https://auto-self.ru/kak-ocinkovat-metall-svoimi-rukami/

Metal galvanizing: technology and methods

Many methods and methods have been created to protect metal from corrosion. Their essence lies in the fact that a special substance is applied to the surface of the metal. At the final stage, a thin film is formed. It prevents moisture, oxygen, and aggressive substances from entering the surface. Among these methods, metal galvanizing is distinguished. It is the most effective.

General information

As mentioned earlier, galvanizing a metal is the process of applying a special substance to the surface of a product. Such solutions are created on the basis of zinc, which is the most suitable starting material. It prevents corrosion and also protects the surface from aggressive substances. The processed sheet has a number of advantages:

• the strength of the product increases;
• resistance to different temperatures;
• not exposed to aggressive substances;
• the service life of the product increases;
• the product is not subject to oxidation.

Technological basis

Galvanizing of metal is a popular procedure all over the world. This process involves applying a special zinc solution to the steel surface. After this, a thin film is formed, which performs protective functions, that is, it prevents corrosion. Corrosion changes the structure of the metal and renders the product unusable.

As mentioned earlier, products are affected by moisture, as well as oxygen and aggressive substances. Their molecules enter the deep structure of the metal, which leads to the appearance of rust. As a result, holes appear on the surface. This process can take a long time. To slow down the oxidation process, use a zinc solution.

Stages

Galvanizing of metal involves covering various types of products with a protective zinc film. To perform this procedure, you must have special equipment. Each element of the device should not be exposed to moisture or aggressive substances. The galvanizing process is divided into the following stages:

1. Preparatory. First of all, you need to put the product in order. Its surface must be cleaned of various substances and then degreased. Next comes the etching process. The metal product is lowered into a container with an acidic medium. As a rule, a solution of sulfuric acid is used. Due to metal etching, an oxide film appears on the surface. This means that the zinc solution will last longer. At the final stage, acid residues are removed from the product and dried.
2. Galvanizing process. This stage consists of applying a solution to the prepared surface. To make it, you need to melt zinc in a special bath under high temperature. When the solution is ready, a metal product is immersed in the bath and left for several minutes.
3. Drying the product. The galvanized product is dried at room temperature.

The process of galvanizing metal products occurs in special baths.

If necessary, they are equipped with sockets. Despite their significant volumes, they also process a large number of small items. Thus, equipment for galvanizing metal and hardware can have not only small, but also large sizes.

Basic processing methods

The most popular way to protect metal products from corrosion is galvanizing. There are different ways to do this process. Each of them is used for a specific type of metal. Some species may react with zinc. There are four types of processing: hot, cold, thermal diffusion, galvanic. Let's look at each type in more detail.

Hot

Coating products in this way is popular in many countries. Its main positive properties are high quality and long service life. Therefore, this method has become one of the best. There are also a number of negative properties.

First of all, the method is not environmentally friendly, since many chemicals are used at the preparation and galvanizing stage. In addition, there is a significant difficulty in hot working. It is necessary to maintain the temperature of zinc in the range from 500 to 5000ºС.

Maintaining this level of heating requires a lot of electricity. Hot galvanizing metal at home is a rather complex process.

Technologically, the process is divided into two stages. This is the preparation and galvanizing of metal. At the first stage, they prepare the metal product. Its surface must be degreased and cleared of debris. After this, etching, washing and drying occurs.

These operations are prescribed in regulatory documentation.

To coat a part with zinc, you need to immerse it in a special bath. It contains a special solution that prevents corrosion. Methods for fixing metal during hot-dip galvanizing can be different. They depend on the type and shape of the product. This technology is used in many industries. For example, for the production of galvanized wire, pipes, etc.

After applying the hot method to them, the products have a long service life, that is, they are reliably protected from corrosion. The only difficulty is the baths. To process large parts, it is necessary to find a bath of appropriate volumes, which is quite difficult.

This feature affects costs. Where is hot galvanizing of metal performed? Kursk, Moscow, Chelyabinsk, Yaroslavl - this is just a small list of cities where various companies offer this service. Often they work with large volumes.

Galvanic galvanizing of metal - technology

This method is used when processing a smooth surface is necessary. The technology of galvanizing metal by galvanic method is based on fixing the substance to the surface of the product due to electrochemical action. This method is suitable for absolutely all types of metal. The product receives a uniform shiny coating. This occurs due to the fusion of the metal coating and zinc.

This interaction is affected by the presence of various debris or other films on the surface. Therefore, before starting the procedure, you should do some cleaning. In mass production, it is difficult to monitor this, so galvanizing may be of poor quality.

The galvanic method is based on immersing a metal product in a bath containing an electrolyte solution. A current source is connected to the part. In this case, the process of electrolysis occurs. It is exposed to zinc, which coats the metal part.

pros

The main positive quality is the appearance of the product - the surface is smooth and shiny. However, there is also a significant drawback. Before draining the solution that was in the bathroom, it is necessary to clean it of zinc. This method generates a large amount of waste that is harmful to the environment. Therefore, it is necessary to purchase special expensive equipment. It will release zinc from the solution. Therefore, this method is one of the most expensive.

This procedure is used by many craftsmen when it is necessary to process small parts. First you need to find a suitable container and make an electrolyte. The procedure is carried out in a well-ventilated area and in protective clothing, since electrolyte particles can be harmful to humans. If they come into contact with the skin, a chemical burn is possible.

To prepare, take water, zinc sulphide, magnesium and vinegar. The finished concentrate must be filtered. Next, the metal part is lowered into the container and the anode product is prepared. A copper wire is attached to a small piece of zinc and connected to the electrical network. The product is lowered into the electrolyte and the processing process begins. After this, the metal part is dried.

Galvanizing metal at home is quite easy to do.

Features of the cold method

Over the past few years, this method has become widespread. Its essence lies in the fact that a metal product is painted with special substances that contain zinc. This method does not require any special skills. However, there are also disadvantages: finished galvanized products are subject to mechanical stress.

In addition, it is necessary to constantly monitor the technical personnel who prepare the solution and perform the work. As mentioned earlier, this method is quite simple. Therefore, equipment for cold galvanizing of metal is not required. Work must be carried out in accordance with sanitary and hygienic rules.

Using this method, pipes are processed, as well as products that are in a fixed version. To do this, you need to prepare a solution and apply it to the product using a brush or roller. The only equipment used for cold galvanizing metal is a spray gun.

It helps to reach inaccessible places and paint evenly and efficiently. Among the disadvantages, many users note low reliability.

Thermal diffusion galvanizing technology

This method has been used for a long time, but it is still popular today.

It was first used in England at the end of the 19th century. The invention became famous thanks to the famous scientist Sherard. However, this method was quickly forgotten, replaced by another. Its revival occurred at the end of the twentieth century.

The technology of the thermal diffusion method is that the surface of a metal product is treated with zinc in a vapor state. To do this, it must be heated to 2500ºС. The process is carried out in a closed container in the presence of a zinc-containing mixture and metal elements.

The technology for carrying out this procedure is determined not only by domestic, but also by imported regulatory documents.

Thermal diffusion galvanizing is performed when it is necessary to achieve a thickness of 20 microns. The technological process is similar to the hot galvanizing method. However, there are also differences. The prepared product is lowered into a drum oven, where processing occurs due to rotating forces. This process is completed within 3 hours of operation of this equipment. It is used to paint various small parts, such as washers and screws.

Unlike the hot method, zinc dusting occurs evenly over the entire surface.

Conclusion

This process helps protect various metal parts from corrosion, moisture, and aggressive substances. There are 4 technological types of galvanizing. Each of them has its own characteristics and is suitable for a specific type of metal.

Incompatibility of such components will lead to poor-quality painting and, as a result, to a decrease in the strength of the finished product. Galvanizing occurs in special baths or drum furnaces. However, the process can also be done at home. To do this you need to purchase consumables.

The work is carried out in a ventilated area in special protective clothing, since some components cause harm to the human body.

Source: https://FB.ru/article/242672/tsinkovanie-metalla-tehnologiya-i-metodyi

Do-it-yourself cold galvanizing technology

Galvanizing is one of the most effective ways to protect metal structures from corrosion. There are several methods by which the result is achieved, ranging from electrochemical deposition to thermal gas spraying. However, the most popular and simplest is cold galvanizing of metal - a method suitable for processing parts of any size, profitable and affordable even for use at home.

Principle of the method

Cold galvanizing of metal structures is a method of painting metal using a special composition containing a large amount of zinc (from 89 to 95%).

The result is the formation of a durable coating by drying paint. Moreover, the protection of the metal is not only physical, preventing mechanical stress, but also cathodic, preventing the development of corrosion by reducing the potential.

The technique is characterized by the following features:

• performing the process using a roller, sprayer or regular brush;
• ensuring a high level of water resistance, fire safety and electrical conductivity of the processed material;
• minimal probability of metal deformation due to high temperatures - when galvanizing, the surface heats up to only 5°C–40°C;
• the possibility of applying almost any paint and varnish material to the surface of the structure - the exception is alkyd paints, which have a risk of peeling;
• no need to move the workpiece.

Using this technique, bridge structures, pipes, elements of railway tracks and road barriers are protected. In addition, galvanizing provides protection for tanks, reservoirs and oil pipelines. And one of the most popular areas of application of the method is the processing of parts for passenger cars and trucks.

Differences from hot-dip galvanizing

The cold galvanizing method has a number of differences from the hot galvanizing method, making it more popular. One of the main advantages is the ability to solve corrosion problems efficiently and safely. Other advantages include:

• The principle of applying a zinc-containing composition. With the hot method, metal structures are immersed in a container filled with zinc alloy, which limits the size of the part. It is more convenient to process large objects using a cold method, reminiscent of painting;
• The temperature at which the cold galvanizing composition is applied is no more than 40 degrees, that is, more than 10 times less compared to the hot method. In most cases, even standard room conditions are suitable;
• Possibility of adjusting the quality of the coating. Thus, when using the hot method, the work performer regulates only the temperature, obtaining an almost unpredictable result. Cold galvanizing requires care, but allows for a more aesthetic appearance.

The advantages of cold metal processing are complemented by lower cost of work. And the only disadvantage is the increase in time for their implementation. But do-it-yourself cold galvanizing can be carried out even at home - without the use of specialized equipment and special conditions.

Galvanizing process

The process of processing metal structures using cold galvanizing technology requires preparing the surface before applying a protective composition.

According to GOST, this preparation consists of the following stages:

1. First of all, the surface is washed to remove contaminants from it;
2. A waterjet, hydrodynamic or sandblasting method is used, thanks to which the metal acquires the required degree of roughness, and scale and rust are removed;
3. If the first two methods were used, the structure is dried;
4. The metal is manually cleaned to remove sharp edges, cooking splashes and corners;
5. The structure is cleaned of dust using compressed air.

If there are fatty and oily inclusions on the metal, the surface is degreased using solvents.

The degree of degreasing is controlled by GOST 12.2.052, dust content is controlled by ISO 8502-3. The roughness is checked with a comparator or profilometer and compared with the values ​​from ISO 8503-1.

Application Features

When the surface is prepared and its quality is checked, the process itself begins. To obtain a high-quality result, the cold galvanizing technology of metal involves maintaining a certain air temperature in the work area.

It must exceed the dew point value by no less than 3°C, which avoids the appearance of moisture on the metal and, accordingly, a decrease in the quality of protection and a reduction in its service life.

The parameter is determined by special instruments - thermometers, hygrometers or psychrometers, the readings of which are compared with the values ​​​​from special tables.

The protective coating is applied in several layers, each subsequent one only after the previous one has completely dried. The application method can be airless or pneumatic. Elements requiring stripe painting are finished using rollers and brushes. And after the work is completed, the quality of the coating is checked - for this they use special measuring devices and a visual method.

Popular materials for galvanizing

Cold galvanizing is performed using various materials, which are selected depending on a number of factors.

Popular compositions suitable for both industrial use and home work include:

• the preparation “Galvanol”, which has good adhesion to products made of ferrous metals and is characterized by ease of application, the possibility of use in the temperature range of –30°C – +50°C and galvanizing even rusty surfaces;
• “Tsinotan”, used for processing tanks for storing petroleum products, pipes and tanks of the hot water supply system, power line supports and hydraulic structures;
• paint for cold galvanizing "AnticorZinc™", characterized by resistance to petroleum products, solvents, fresh and sea water, high adhesion to the metal surface, mechanical strength and good aesthetic characteristics;
• “Master AK-100” is a composition suitable for corrosion protection of automotive parts, including body elements, building and railway structures and supports for power lines;
• “Cinotherm” is a solution used in combination with any paint and varnish materials, which allows not only to protect the metal, but also to change the color of its surface;
• “ZVES” is a paint whose compositional features (the inclusion of zinc powder and ethyl silicate) allow it to be used to increase the protective properties of alloy steel.

Almost all substances used for cold galvanizing are characterized by the same gray color and consumption in the range of 0.25–0.3 liters per 1 m2.

And when choosing a specific product, you should pay attention to their price and specified characteristics such as service life, drying time to a strength level suitable for applying the next layer and temperature range of use.

Another important parameter is the zinc content in the material, which is in the range of 85–96%. While the service life can reach 10 years, the drying period is from 0.5 to 6 hours, and the processing price is 1 sq. m of surface starts from 55–60 rubles.

Features of performing work at home

Due to the simplicity of the technique and the absence of special conditions, galvanizing metal with your own hands is easier than using other metal processing options. When preparing the composition, it should be taken into account that it is not ordinary paint, but rather a type of liquid zinc. And its storage is carried out in two forms - in the form of zinc powder and a liquid binder component.

DIY stairs to the second floor in a private house. - there is more useful information here.

It should be noted that before galvanizing, the material is first diluted and then thoroughly mixed until a homogeneous mass is obtained, which avoids delamination of the two-component substance.

It is also necessary to take into account that the strength of the resulting coating largely depends on its preparation.

Carefully performed mechanical stripping of the metal and subsequent degreasing can increase the service life of the protective layer several times. And applying special compounds not in one, but in 2-3 layers will provide protection for at least 10 years without the need for additional processing.

You will be interested in this article - How to choose a metal entrance door to an apartment?

When working at home, it is recommended to apply layers at intervals of at least 30 minutes - but no more than an hour. The ambient temperature should be in the range of 5–40 degrees, which allows you to carry out work at almost any time of the year, outdoors or indoors.

If galvanizing occurs inside a building (garage or workshop), good ventilation should be ensured. And before applying finishing finishes and varnishes to the galvanized coating, it is advisable to wait at least 24 hours to ensure final setting of the composition.

Properly performed cold galvanizing at home allows you to obtain protection for the metal surface no worse than the result of factory processing of metal structures. To do this, all process conditions must be observed. Although they are already simple compared to other methods. And the appearance of the protected metal is quite impressive, even if the person performing the work has never done galvanizing before.

You can learn more about cold galvanizing of metal at http://spektrlkm.ru/

Source: https://DimDom.ru/tehnologiya-holodnogo-cinkovaniya-metalla-svoimi-rukami.html

Technology of cold galvanizing of metal, advantages, methods, compositions for galvanizing - Machine

The longest (more than 25 years) protection of metals from corrosion is provided by coatings containing more than 95% zinc. However, traditional application methods, such as hot-dip galvanizing or galvanizing, are not always profitable, and sometimes they are completely impossible to implement.

For hot-dip galvanizing, it is necessary to take the structures to a special workshop, where they are dipped into baths of zinc heated to 460°C. Not all structures will fit into these baths; some will have to be disassembled.

Not every design or product can be disassembled. Some metals are capable of deforming at such high temperatures.

Assembling and disassembling structures, as well as their transportation, entails additional costs.

Cold galvanizing compositions do not deform metals; they can be used for structures and products of any size, and can be applied directly at the site of use, which is especially important when structures cannot be dismantled. Therefore, cold galvanizing today has also become a traditional method that allows achieving those protective characteristics in an accessible, convenient and cheap way.  

What is cold galvanizing and how does it work?

Before studying and choosing compositions for cold galvanizing, you need to understand how the method works and why it is so good in the fight against corrosion.

Cold galvanizing is the application of a special composition with a high (more than 95%) zinc content to the prepared metal surface. The compositions are applied like ordinary paints, with a brush, roller, or spray gun, directly at the site where the structures are used.

As a result, a durable coating is formed that protects not only from corrosion, but also from various negative phenomena, such as temperature changes or the ingress of chemicals.

Despite the fact that the method is so easy to apply, it is no less effective than other, difficult to implement methods of protection.  

Why is zinc used in formulations?

In compositions for cold galvanizing, not just zinc is used, but its high content (more than 95%) and very high purity, without impurities (98-99%). If you apply such a composition to the surface of another metal, you will immediately provide 2 types of corrosion protection:

1. When zinc interacts with air and water, an oxide or hydroxide is formed on its surface, which prevents the further development of the reaction and the formation of corrosion. This method prevents oxygen and moisture from penetrating deep into the iron, which is why it is called passive or barrier.  
2. The electrochemical potential of zinc is much lower than that of iron (-760 and -440 mV). Therefore, forming a pair, iron becomes a cathode, and zinc plays the role of an anode, gives up its electrons, and is consumed itself to protect the iron. In this case, zinc compounds are formed, which “heal” coating defects, stopping the corrosion process and preventing its further occurrence. This method is called active or cathodic.   

For some time after application (depending on operating conditions), the coating still has a porous structure that allows a minimal amount of moisture to pass through to the iron. The coating then protects the iron in an active, cathodic way.

Subsequently, the structure of the coating becomes compacted, it ceases to allow moisture and air to pass through. Passive barrier protection comes into effect.

However, if the integrity of the coating is damaged (defects, scratches, cracks), cathodic, active protection will come into force again.   

How do compositions for cold galvanizing differ from conventional and zinc-containing paints?

 It's simple - conventional paints do not contain zinc, which means they do not have the protective properties that zinc provides. In addition to zinc, aluminum and tin also provide similar protective characteristics. However, their durability is slightly lower than zinc, and the price is slightly higher. Therefore, the use of zinc is optimal for use in cold galvanizing compositions.

However, not every zinc paint or zinc-containing paint is suitable for cold galvanizing. If you see zinc in the paint, do not rush to buy it; it may not provide you with even one method of protection against corrosion.

The composition for cold galvanizing is not paint with the addition of zinc, it is rather zinc with the addition of polymers and binders. In the composition for cold galvanizing, the zinc content must be at least 95%, and the purity of zinc should strive for 100%. In addition, zinc particles in this composition are no more than 12-15 microns, and better yet – 3-5 microns.

If paint with zinc does not meet the above requirements, then it is not a composition for cold galvanizing and will not provide long-term (25-50 years) corrosion protection.  

What are the advantages of cold galvanizing and are there any disadvantages?

The cold galvanizing method has a number of undeniable advantages compared to other methods.

Advantages:

• There are no restrictions on the size of structures;
• Products and structures do not need to be disassembled and transported;
• Welding possible after coating;
• Welds can be galvanized;
• Quickly repair the damaged area;
• Applicable at -10°C and +40°C;
• We obtain an elastic coating that does not crack or deform, even when exposed to high or low temperatures;
• High (1 point) adhesion to metal surfaces and finishing coatings;
• Using the method on your own, without involving specialists.
• The price is noticeably lower, and the savings are greater.

The method also has difficulties that can hardly be called disadvantages:

• Careful surface preparation and strict adherence to the technological process are required.
• It is difficult to cover internal cavities and hard-to-reach areas.

Careful surface preparation ultimately provides excellent adhesion and additional durability to the coating, so the results are worth the effort.

Strict adherence to the technological process is required in all methods - the better the work is done, the longer and more reliable the coating will serve.

And in order to cover internal cavities and hard-to-reach areas, cold galvanizing compounds began to be produced in the form of sprays, and they also used special attachments for spray guns.

Due to its compatibility with welding, the mobility of the technical process and the possibility of applying it to a structure of any size, cold galvanizing is used to protect bridges and bridge structures, various reservoirs, port and hydraulic structures, power line supports, road fences, lighting poles, cellular masts, protection of railway trains, pipelines, equipment of industrial enterprises and building metal structures, not to mention fences, gates, roofing and smaller metal products.   

The application process is very simple!

The technological process of cold galvanizing is quite simple and has only 6 points. Usually they cope with it on their own, that is, without the involvement of specialists.

1. Surface preparation – removal of old coatings, cleaning, degreasing. For better adhesion, it is important to roughen it (sandblasting or metal brushes).
2. To prepare the composition, mix with a drill with an attachment or mixer until smooth.
3. Application of the material - by brush, roller, spray gun or dipping.
4. Applying the required number of layers. Layer drying from 10 to 40 minutes.
5. Quality control of the coating - it should not have through pores, bubbles or visible damage.
6. Final curing before commissioning.

You can learn about the process of surface preparation and application in detail in the article Cold galvanizing with your own hands.  

Once the corrosion protection industry began to appreciate the benefits of cold galvanizing, many different types, grades and formulations appeared on the market. We will tell you about the most popular and proven options.

Compound for cold galvanizing or zinc-containing paint. Contains 96% pure zinc, guarantees a reliable anti-corrosion coating for a period of 10 to 50 years, depending on the number of layers and operating conditions.

It is highly economical to use - only 220-300 grams of composition are used per 1 m2 with a layer thickness of 40 microns. Sold at a low price - from 300 rubles per kg.

Dries quickly (20 minutes) and combines well with 99% of paint finishes.

Dries quickly (30 minutes), forms a coating resistant to prolonged contact with alcohols, salts, sea and fresh water. Allows you to weld structures after coating without destroying it.  

Sold at a price of 270 rubles per kg. Excellent for protecting cold water pipes.

Composition for cold galvanizing with a protective effect. Allows application without preliminary cleaning of the surface (we still recommend doing this for greater durability of the coating) and at temperatures from -30 +80°C. The finished Zinkor-Barrier coating will withstand temperatures from -60 to +150°C.

Withstands constant exposure to aggressive environments, fresh and sea water, salts, alkalis and weak acids. Contains 96% zinc.

Dries from 10 to 50 minutes, compatible with most paintwork materials, excellent for use in the oil and gas complex. Costs from 400 rubles per kg.

Zinc spray or Zinkor spray is a complete composition for cold galvanizing in an aerosol can. Contains 96% zinc, protects metals that are constantly in water, soil and air from corrosion.

Works great not only as a stand-alone coating, but also as a primer in combination with various decorative paints and varnishes. You can use zinc welding spray.  

Has tread protection. Convenient to use in hard-to-reach places or for repairing small areas of coating. Price – from 400 rubles per 520 ml can.

Anti-corrosion zinc-rich composition. Contains 85% zinc, but has increased resistance to dirt, water, oil products, and aggressive atmospheres.

• It is actively used to protect hydraulic structures, bridges, load-bearing building structures, and oil storage tanks.
• Has excellent adhesion to metal surfaces (1 point) and to finishing coatings.
• Sold at a price of 360 rubles per kg.  

Often used for corrosion protection of water supply systems or petroleum storage tanks. Works as an independent coating or as a primer, in combination with various enamels. Sold at a price of 295 rubles per kg.

Composition for cold galvanizing with increased resistance. Can be applied in frosts down to -30°C; after complete drying, it can withstand both low (-60°C) and high (+160°C) temperatures.

Excellent compatibility with almost all paintwork materials. Easily copes with constant heating, contact with fresh, sea and even hot water. It is used to protect water pipelines, including hot water supply, petroleum product storage tanks, transport, building structures, hydraulic structures and in other areas. Costs from 330 rubles per kg.

A well-known composition that has gained fame around the world. It is actively used in industry, transport, at nuclear power plants and hydroelectric power stations, it is used to protect bridges and roads, it is indispensable in oil refining and forging, during construction, as well as at urban infrastructure facilities. Sold from 690 rubles per kg.

How to choose the composition you need?

Before you buy a composition for cold galvanizing, you need to understand what your requirements it must meet. You need to study its composition and find out what the manufacturers guarantee if you apply this coating.

The color of the compositions for cold galvanizing is practically the same - gray, matte. The consumption of the composition is also approximately the same for everyone - about 300 g per 1 m2.

What you should pay attention to:

• Zinc concentration - must be at least 88-94% zinc, otherwise it is not a composition for cold galvanizing, but simply zinc-containing paint, which will not give the desired effect.
• The service life of the coating without renewal should be 25-50 years.
• Shelf life and shelf life of the composition - if you are not going to use it on the same day, then this is a very important parameter for you.
• The drying time of the layer and commissioning will tell you how quickly you can use the structure after applying the coating.
• Surface preparation and application conditions may require conditions that you may find difficult to achieve.
• Price - sometimes it is inflated simply because of imported production or brand recognition. You can always choose less expensive, domestic analogues with the same characteristics.​

Look for all compounds for cold galvanizing in the metal protection catalogue.  

Do you need advice and help in choosing the right composition?

Source: https://regionvtormet.ru/okrashivanie/tehnologiya-holodnogo-tsinkovaniya-metalla-preimushhestva-metody-sostavy-dlya-otsinkovki.html