How to galvanize metal with your own hands

How to galvanize metal at home? — Machine tools, welding, metalworking

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:

First of all, the surface is washed to remove contaminants from it;
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;
If the first two methods were used, the structure is dried;
The metal is manually cleaned to remove sharp edges, cooking splashes and corners;
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.

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Copper plating of metal at home

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://stanki-info.com/kak-otsinkovat-metall-v-domashnih-usloviyah/

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/

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:

Thermal diffusion method.
Cold galvanized.
Galvanic galvanization.
Hot galvanizing.
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.

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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

Do-it-yourself metal galvanizing

The process of galvanizing metal is actually not that complicated, so you can do it yourself. There are several technologies, each with its own characteristics. Which one to choose? Depends on capabilities and preferences

Procedure Objectives

Galvanizing is not a complicated operation, and many can learn it.

The procedure is not quick and will require a lot of time and effort. Galvanizing metal yourself is a good solution when you need to save money. It will end up being much cheaper. Why is it so important to sometimes perform galvanizing?

Galvanizing is necessary to protect the metal from corrosion. If you don't do this, the consequences can be disastrous. It is this negative process that is most destructive to metal. Thanks to galvanizing, a film with protective properties appears on the surface.

It is worth considering that galvanizing does not protect the metal from rust. That is why, in addition to this procedure, it is also worth carrying out chrome plating. You have to choose the galvanizing class of the metal. What to follow?

Differences between methods

Each method is different:

properties;
time of operation;
film thickness;
equipment used.

In different cases, either method may be most relevant. There are five ways in total, and each has its own characteristic features. Hot-dip galvanizing of metals cannot be called environmentally friendly, because the treatment is chemical and the zinc melts. This method is recognized as the most durable and effective. The technology consists of the preparatory stage and galvanization.

You will need to purchase special equipment. The method is not suitable for independent implementation. It is very labor-intensive, expensive, and also environmentally unsafe.

Thermo-diffuse galvanizing is also not suitable for home use. During the process, heating occurs up to 2600 degrees Celsius, and of course the method is only suitable for industrial use.

Gas-thermal spraying is used when the object simply does not fit into the galvanizing bath.

This type of galvanizing is again not suitable for those who want to do galvanizing themselves. Besides, it’s unlikely that anyone needs to galvanize such a huge object

You can carry out cold galvanizing directly at home. In essence, this procedure is applying a kind of paint. However, it can be called paint very conditionally; rather, it is zinc in a solid state.

You will need to purchase two containers, one of which will contain the liquid binder component, and the other will contain the zinc powder itself. These two components can be mixed in different proportions. Sometimes it can be 1 part binder to 3 parts zinc, and sometimes it can be 1:1.

It should be applied at temperatures between 5 and 40 degrees Celsius. In this case, the room must be ventilated. No special equipment is required for the procedure!

The cost of the method is quite acceptable for many. This method is simple and effective, and is an excellent choice for galvanizing at home.

Galvanic galvanizing

You will need a car battery and a charger. The latter must have these characteristics: 2-6A, 6-12V.

You will also need to make an electrolyte. It is worth using a zinc salt solution. To prepare the latter, you will need a liter of water, 200 grams of zinc sulfate, 15 grams of sodium acetate, 50 grams of ammonium sulfate. What will happen in the end?

The zinc will remain on the surface, while the acid will form a salt. It is worth considering an important point: if there is sediment at the bottom, then you need to dilute the overly concentrated solution a little with water.

Galvanizing at home is quite possible!

It is only important to choose the appropriate type of galvanizing, taking into account the working conditions and the object subject to the procedure. The result is inexpensive and effective galvanizing, the result of which will be reliable.

Source: https://stroydetali.com/cinkovanie-metalla-svoimi-rukami_/

Do-it-yourself cold galvanizing - 8 rules for high-quality application

To protect metal structures and products from corrosion, you do not need to contact specialists, disassemble them and transport them somewhere, or spend a lot of money, effort and time. You just need to buy a cold galvanizing compound, apply it yourself and forget about corrosion for 25 years. Here we will tell you where to buy cold galvanizing and how to apply it, spending a minimum of time and money.

A little about the method

Cold galvanizing of metal structures is the application of a composition with a high (92-96%) zinc content to the prepared metal surface. The method allows you to apply the composition on your own, without the involvement of specialists, and directly at the site of operation of the structures. The result is a durable coating that lasts up to 25 years without renewal.

You can read all about cold galvanizing and its effects in our articles, and now in detail about the application process.

What do you need?

To prepare the metal surface and apply the composition you need:

1. A grinding machine, if you don’t have one, then a metal brush or coarse sandpaper - this is necessary to remove the old coating or already formed rust. The grain size of the grinding wheel or sandpaper should be from 5 to 6 according to GOST 3647-71 or from 180 to 220 according to the European standard FEPA.

2. Solvent: solvent, xylene, solvent-ur or any suitable for your composition for cold galvanizing. The solvent is necessary for degreasing the surface, diluting the composition to a more liquid consistency and cleaning tools. The amount of solvent depends on the scope of your application job.

3. A construction mixer or a drill with a special attachment , or any object suitable for mixing paint in a jar - it is necessary to thoroughly mix the composition so that the coating lays evenly and without lumps.

4. Tool for application, you can choose: brush, roller, spray gun, airless or air sprayer - whatever is more convenient for you to apply.

If you have small parts with hard-to-reach areas for application, then it makes sense to apply the composition by immersion. Then you need a convenient plastic container of such a size and depth that your products can completely fit there.

5. Personal protective equipment: gloves, a respirator, preferably a protective suit with a hood so as not to get dirty, as the coating will be very durable.

6. Composition for cold galvanizing , in the quantity you need.

Conditions for application and subsequent operation may differ for each cold galvanizing composition. Be sure to read the instructions included with the material.

Advice! The instructions and descriptions of some cold galvanizing compounds indicate that they allow application directly to a rusty and unprepared surface. This is true, but we still recommend that you carefully prepare the surface and remove any remaining rust and old coatings. This will allow the coating to last longer - up to 25 years without updating.

Application conditions

Application temperature from -35°С to +35°С

Air humidity 70-98%

Outdoors or in a well-ventilated area

Detailed instructions for applying the cold galvanizing composition

1. Cleaning the metal surface

All traces of dirt must be removed from the metal surface. This can be done using simple, household detergents.
If the steel is new and there is tightly adhered scale, it is necessary to carry out abrasive blasting cleaning to degree 2 according to GOST 9-402.
If the metal surface has old coating or rust, they are removed using a grinding machine, brush or sandpaper.

Cleaning can be done well and quickly using water under a pressure of 10-20 MPa.

If the steel has already been galvanized, then the old coating must also be removed. Here you cannot do without water under a pressure of 10-20 MPa.
Paint is removed from metal mechanically, chemically or with water under a pressure of 175-275 MPa, whichever is more convenient for you.
After removing old coatings and dirt, it is necessary to thoroughly dust the surface, not skipping any areas. To do this, it is better to use a cleaning device with compressed air, which must be clean and dry and comply with GOST 9.010-80.

2. Degreasing

After cleaning work, the metal surface must be degreased.
To degrease metal, solvents are used: xylene, solvent or special solvents of the same brand as the composition for cold galvanizing.
If the metal structure is processed outdoors, then the finished composition must be applied no later than 12 hours after cleaning and degreasing the surface. If they are processed indoors, then no later than 48 hours later. Otherwise, cleaning and degreasing will have to be done again.

3. Preparation of working composition

Most cold galvanizing compounds are one-component and immediately ready for use. If the composition is two-component, then it must be mixed in accordance with the instructions attached to it.
It is necessary to open the jar and mix thoroughly until smooth, preferably mechanically.
If you apply with a spray gun or mechanical spray, you may need to dilute the composition. For dilution, petroleum, coal solvent, xylene or a special solvent of the same brand as the composition are also used.
The composition is diluted by no more than 5-10% of the total mass. After dilution, as well as every 30 minutes, the composition must be thoroughly mixed again to avoid settling of zinc powder and uneven coating.

4. Application

After preparation, the composition is applied to the prepared surface, outdoors - no later than 12 hours, indoors - no later than 48 hours.
We recommend roughening the surface with sandpaper before application - the adhesion of the composition to the metal will be stronger.
Application with a brush: It is recommended to choose a brush made of natural bristles. At the same time, it must be cleaned of various contaminants and dust. Apply like regular paint.
Application with a roller: you need a roller made of material that is resistant to organic solvents. It is important that the roller is cleaned of dust and various contaminants, as well as previously used paints and varnishes. We apply the composition in the same way as regular paint.
Application using a pneumatic sprayer: the sprayer must be cleaned of dirt, as well as of previously used paints and varnishes. The diameter of the nozzle used is 2.0-3.0 mm. The pressure in the sprayer is 2-3 bar (0.2-0.3 MPa). Try to spray as evenly as possible.
Application by airless spraying: the equipment used must be cleaned of dirt, as well as of previously used paints and varnishes. The diameter of the nozzle used is 0.38-0.63 mm or 0.015-0.025 inches. The pressure in the sprayer is 80-120 bar (8-12 MPa).
Application by dipping: immerse the part in a jar or special container with a composition for cold galvanizing. Avoid dipping your hands. The part should be completely submerged, wait 5-10 seconds. After making sure that the composition has reached all hidden cavities and hard-to-reach places, remove the part. Then it is recommended to hang the part until it dries completely and evenly.
Application from an aerosol can: when applying, the can should be held vertically with the valve up at a distance of 25-30 cm from the surface to be coated. Apply the aerosol at ambient temperatures from +5°C to +40°C. After finishing work, clean the valve: turn the cylinder over and press the nozzle until clean gas begins to come out. Remove any remaining composition on the valve with a swab soaked in a solvent (solvent, xylene).

General it is recommended to apply the composition using any of the methods in 2 or more layers - this way the coating will be stronger and last longer. When applying, it is necessary to overlap the edge of the strip of the previous layer each time. Wait between layers for 30 minutes to 2 hours, depending on the chosen composition. The final thickness of the zinc coating should be from 40 to 160 microns.

Finishing enamels are applied after the coating has completely dried, waiting from 30 minutes to 8 hours - for special protective coatings compatible with the composition. For simple paint coatings it is sometimes necessary to wait 24 hours.

Where to buy composition for cold galvanizing?

Choose the cold galvanizing compositions that suit you in our store.

You have questions? Call or write to us!

We will help you choose the coating that is optimal for you!

Source: https://zincor-lkm.ru/articles/holodnoe-cinkovanie/holodnoe_tsinkovanie_svoimi_rukami/

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.

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Do-it-yourself galvanizing of metal - Metalworker's Guide

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.

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.