How to solder stainless steel with silver - Metals and their processing

Why you definitely shouldn't drink silver water

This is the name given to water with the addition of tiny particles of silver. The scientific name for such solutions is colloidal silver. This liquid has a long and even legendary history.

The famous Hippocrates used sheets and bandages soaked in water infused in silver bowls to treat wounds. The equally famous ancient Greek historian Herodotus mentioned that the troops of the Persian king Cyrus II the Great used silver vessels to transport water: this made it possible to keep the liquid drinkable during long campaigns.

It was also noted that ordinary warriors who drank from pewter vessels were more likely to develop gastrointestinal infections than nobles who drank from silver goblets.

The antimicrobial activity of colloidal silver was also used in the twentieth century. Drops were made from it to treat eye infections, and it was taken orally for a variety of diseases, from colds to gonorrhea.

The popularity of silver water decreased only with the advent of antibiotics. But to this day, colloidal silver is used in alternative medicine. Manufacturers call it a panacea that fights bacteria and viruses, strengthens the immune system, treats eye diseases, herpes and shingles, prostatitis and even cancer and HIV.

However, scientists have already taken a closer look at the water. And they were somewhat horrified.

Is it true that silver water is beneficial?

Let's start with the most herbivorous statement: there is not a single scientific study that convincingly proves the benefits of drinking silver water.

The American Food and Drug Administration (FDA) reported this back in 1999. And 10 years later, they updated the same press release, adding information that colloidal silver can even be harmful to health.

From the point of view of evidence-based medicine, ingesting metal internally (drinking silver water) is a bad idea.

Firstly, silver is not involved in human metabolism. In simple words: our body does not know how to use it. Therefore, in principle, there is no talk of any strengthening of the immune system or treatment of diseases.

Secondly, the metal accumulates in organs and tissues. If you drink silver water, over time it can turn your skin and mucous membranes a distinct blue-gray color. This condition is called argyrosis (argyria). Doctors today do not consider this condition in itself dangerous, but they pay attention to its irreversibility: the color remains forever.

Another unpleasant side effect of consuming colloidal silver is its ability to interact with certain medications. In particular, the effect of taking antibiotics and thyroxine, a drug prescribed for low thyroid function, is reduced.

That is, if you are being treated with an antibiotic, for example, for a sore throat, and at the same time drinking silver water “for health,” your illness will be more severe and longer than usual.

Where did the idea that water with silver is beneficial come from?

To some extent, Hippocrates was right: colloidal silver does have antimicrobial functions - it can destroy some bacteria. Therefore, for example, nobles who drank rotten water from silver cups suffered from diarrhea less often than ordinary soldiers, and a silver leaf applied to the wound healed it.

But silver is a very controversial material.

If you're hoping to feel like royalty by throwing a silver spoon into water or otherwise sanitizing it with silver, we have bad news. A 2017 study found that drinking such liquid can damage DNA and affect the health of future generations - your heirs. These conclusions are based on animal experiments and need to be cross-checked in humans. But preliminary data does not look optimistic.

But treating wounds with silver is probably not a bad idea. One study found that silver water included in dressings inhibited the growth of bacteria and promoted the healing of skin wounds. The American National Center for Complementary and Integrative Health also supports the idea of using colloidal silver in dressings.

So as a topical treatment for burns or other skin damage, this remedy is most likely useful. But using it internally in the form of silver water, hoping for improved health, is at least pointless. At most it is dangerous.

How to choose stainless steel cookware: advice from professionals

Every housewife has stainless steel cookware in her arsenal. These are mainly pots of different sizes, stewpans, ladles, teapots. Whatever new the modern industry offers, many people prefer this material.

Why has stainless steel proven itself so well? Can you cook in it? What are its main advantages? What stainless steel cookware should be in every kitchen? How to properly care for her? We study these issues in theory and practice in the online store “Eat at Home”.

Rich track record

Silver solder for soldering stainless steel

Their skill amazes and enchants, they bring dreams to life, create masterpieces, and pass on their skills from generation to generation. These people are jewelers. To conquer metal and turn it into beautiful products requires skill, perseverance and time.

The main metals that specialists work with are gold, silver, and stainless steel. The main operation in the manufacturing technology of a unique product is metal soldering. Soldering technology has its own characteristics for each material. Brazing stainless steel is a complex process.

Soldering silver at home is a rather expensive operation. It is especially technologically difficult and economically expensive to solder two different metals. Special conditions, special solder and flux must be observed. Author's products are becoming popular among consumers. Many complex projects have a combination of silver parts and stainless steel.

Technology for joining stainless steel parts

Flux for brazing stainless steel

Any connection of two metal parts is a priori not a simple procedure. Soldering stainless steel with copper refers to this type of procedure.

Working with stainless steel is even more difficult than with other types of materials, since it is quite difficult to melt and combines very poorly with other materials. Therefore, to solder stainless steel parts, you need to use proven methods that have been proven over the years.

When soldering any other material, as a rule, no problems arise, but not with stainless steel.

The entire soldering process is clearly regulated by state standards, however, there is one unusual feature.

Each type of metal is connected differently to a particular material; accordingly, for each type you need to use different solder and flux, which will be selected exclusively for this material.

But if you need to connect non-homogeneous (different) metals, you need to use fairly rare, highly specialized consumables.

This type of stainless steel soldering is widely used both in large industries and in domestic settings. It can be used to create sealed containers, solder copper parts, etc. This soldering method is not as common as others, but you still need to know how to do it and all its features.

Can you solder stainless steel with copper?

How to solder stainless steel and silver at home: tips for working and soldering technology

Soldering silver at home is a rather expensive operation . It is especially technologically difficult and economically expensive to solder two different metals. Special conditions, special solder and flux must be observed. Author's products are becoming popular among consumers. Many complex projects have a combination of silver parts and stainless steel.

Technology for joining stainless steel parts

How to solder stainless steel to stainless steel

Soldering stainless steel is quite a complex and difficult job. To make a high-quality connection, you need to comply with many conditions - both in the choice of materials and in the soldering modes. It is somewhat easier to solder alloys containing up to 25% Ni or Cr. They can also be soldered to other metals and alloys, with the exception of Al and Mg. DIYers most often use tin solders.

Features of stainless steel soldering

Solder with silver for soldering stainless steel

Soldering stainless steel is a very labor-intensive process. By following the soldering technology and taking into account all the features, this procedure is greatly simplified.

Stainless steel metals such as nickel and chromium with a metal content of no more than 25% are relatively easy to process. Such materials make it possible to obtain high quality soldered joints even from dissimilar metal parts with the exception of aluminum and magnesium alloys.

The most technologically simple processes include soldering stainless steel with tin.

Features of soldering stainless steel

Soldering steel with silver solder

The anti-corrosion properties of steel are imparted by a chromium additive of 12%. A protective film forms on the surface. It is damaged by mechanical and thermal influences, but is quickly restored in air. This is why corrosion-resistant metals are so valuable.

How is soldering better than welding?

Soldering stainless steel with brass - Metalworker's Guide

Technology for joining stainless steel parts

Solder for soldering stainless steel food grade

How is soldering better than welding?

Is it possible to solder silver with tin? — Metals, equipment, instructions

Technology for joining stainless steel parts

Why you definitely shouldn't drink silver water

This is the name given to water with the addition of tiny particles of silver. The scientific name for such solutions is colloidal silver. This liquid has a long and even legendary history.

It was also noted that ordinary warriors who drank from pewter vessels were more likely to develop gastrointestinal infections than nobles who drank from silver goblets.

However, scientists have already taken a closer look at the water. And they were somewhat horrified.

Is it true that silver water is beneficial?

Let's start with the most herbivorous statement: there is not a single scientific study that convincingly proves the benefits of drinking silver water.

From the point of view of evidence-based medicine, ingesting metal internally (drinking silver water) is a bad idea.

Firstly, silver is not involved in human metabolism. In simple words: our body does not know how to use it. Therefore, in principle, there is no talk of any strengthening of the immune system or treatment of diseases.

THIS IS INTERESTING: How to solder carefully

Where did the idea that water with silver is beneficial come from?

But silver is a very controversial material.

But treating wounds with silver is probably not a bad idea. One study found that silver water included in dressings inhibited the growth of bacteria and promoted the healing of skin wounds. The American National Center for Complementary and Integrative Health also supports the idea of using colloidal silver in dressings.

Source: `https://lifehacker.ru/serebryanaya-voda/`

READ MORE ON THE TOPIC:

How to make flux for soldering copper
How to solder pipes correctly
How to solder a 25 pipe
Why do magnets magnetize?
How to solder metal with tin
How to choose a flux for soldering
How to Solder Tin on Aluminum
How to learn to weld beautiful seams
How to solder thick aluminum

How to choose stainless steel cookware: advice from professionals

Rich track record

High-quality stainless steel cookware has a number of advantages compared to cookware made from other materials. For example, aluminum, being a chemically active metal, reacts sensitively to acidic and alkaline environments. As a result of such reactions, toxic substances are released.

For this reason, you should never cook compotes or jam, ferment cabbage, make brine for vegetable preparations, baby food, or sweet and sour sauces in an aluminum pan.

But stainless steel can easily withstand the effects of acids, so you can cook anything in it.

Stainless steel also has an advantage over enamel cookware. Since enamel is a fragile material, microscopic cracks form on it over time, which shortens its service life. In addition, there is always a risk that milk will escape in an enamel pan or the porridge will burn. Therefore, the cooking process must be constantly monitored. You have to try hard to make milk porridge burn in a stainless steel pan.

Stainless steel is also superior to ceramics in many respects. Stainless steel cookware is not afraid of temperature changes, scratches, shocks and other mechanical impacts. Its safety margin is much higher, so it will last longer. Stainless steel heats up faster, which saves time. And it keeps warm for quite a long time. Unlike many other materials, it is suitable for all types of stoves, including induction. Finally, stainless steel is not afraid of moisture and does not corrode.

Checking the strength of the bottom

To fully enjoy all the benefits, it is important to understand which stainless steel cookware to choose. The online store “Eat at Home” will help you make the right choice. Here you can find high-quality dishes from trusted manufacturers.

These include a Tefal Intuition cookware set, consisting of two saucepans and a ladle with lids. Pay attention to the characteristics of stainless steel. The alloy used here is 18/10 grade stainless steel. This means that 17–18% chromium and 9–10% nickel are used as additives. This ratio is highly valued.

The thickened multi-layer heat-distributing bottom of the pans heats up smoothly and evenly. It is not subject to deformation and maintains performance characteristics for many years. Inside, a volume scale is printed on the walls of the dish, and convenient drainage edges prevent the contents from spilling. Additional functional convenience is ergonomic handles that do not heat up when exposed to high temperatures.

Walls and lid make all the difference

When looking for the best stainless steel cookware, it is important to take a close look at the walls. They can be either single-layer or multi-layer. Experts say that the wall thickness of good stainless steel ranges from 5 to 8 mm. All three pans from the NADOBA set of the OLINA series have walls 6 mm thick. In addition to them, the set includes a bucket that also meets the stated requirement.

The lids also need to be examined carefully. In this set they are made of heat-resistant glass and equipped with silicone rims, which ensures a tight fit to the pan.

The lids have a slightly convex shape with special holes for steam to escape - this is another sign of high-quality cookware. This design will not allow the soup to escape even with strong bubbling.

An additional functional detail is silicone holders on pot handles and lids. They protect them from overheating, so it is impossible to get burned during the cooking process.

Quality at its best

Always check the quality of the polish on your stainless steel cookware. It can be matte or mirrored. The second option is considered more popular. High-quality polishing increases anti-corrosion properties and makes the dishes more stylish. Just look at the Vitesse Ines cookware set.

It contains nine pieces: 3 pots of different sizes and a ladle with lids, as well as a bakelite stand. A variety of pot sizes - 2.4 liters, 3.4 liters and 5.9 liters - allows you to cook a larger variety of dishes at the same time.

It is convenient to cook a small amount of food in a ladle, say, a few eggs or vegetables for a salad. The stainless steel from which all items are made meets the most stringent standards.

High quality alloy, heat-accumulating bottom and heat-resistant glass lids significantly increase the service life of the cookware.

It is convenient to place a hot pan with freshly cooked sauce or puree on a bakelite stand. If you wish, you can serve them directly on the dining table - the table top or tablecloth will not be damaged at all.

Easy to use

Another important point is how to use and care for stainless steel cookware and how to clean it. After all, its service life directly depends on this. Although it does not require any special complex care.

It is not recommended to wash stainless steel dishes with abrasive cleaners and steel wool. They may leave scratches on the surface. This will not affect the performance in any way, but the aesthetic appearance will be spoiled.

If the food in such a pan is still burnt, experts recommend pouring a solution of soda and water in a 1:2 ratio, boiling lightly and scraping off the carbon deposits with a wooden spatula. The presented collections of stainless steel cookware are good because they can be loaded into dishwashers and washed in the appropriate mode. Please note that only high quality cookware has this option.

Stainless steel pan sets are an essential item in any kitchen. If only it is truly high-quality, durable and practical tableware. In the “Eat at Home” online store you will find what you are looking for. Sets of cookware for all occasions will become reliable executive assistants for you and will make everyday meal preparation more comfortable, easier and enjoyable.

Source: https://www.edimdoma.ru/jivem_doma/posts/23250-vyderzhka-s-bleskom-kak-vybrat-posudu-iz-nerzhaveyuschey-stali

Silver solder for soldering stainless steel

Technology for joining stainless steel parts

Unfortunately, soldering stainless steel is not such a simple process, and ordinary solders in the form of tin or copper will not do the job well. Solder for soldering stainless steel must contain silver. The industry produces it coated with flux (contains 30% silver). You can use solder containing zinc, copper and nickel.

Sometimes they solder with brass, this is considered the most difficult work. To melt brass, a temperature of 950 degrees is required. To ensure high-quality performance of work and reliable connection of parts into a single structure, it is necessary to use flux. For brass, the flux consists of boric acid and borax. Parts can be soldered using this method only if they are small and well heated. Soldering massive parts at home is problematic.

What you need to solder stainless steel:

gas burner, which you can assemble yourself;
solder containing silver and coated with flux;
soldering acid.

Technological process of soldering stainless steel with hard solders:

heating parts for degreasing;
surface treatment with orthophosphoric acid;
heating parts to a red glow;
supply of solder followed by heating.

To solder a hole in a stainless steel sheet at home, you need to determine its size and prepare an appropriate patch. Soldering must be performed according to technology using solder containing silver.

Nanotechnology: welding pencil

The easiest way to carry out welding work is with a special welding pencil. It can weld any metal: aluminum, iron, stainless steel, copper, brass. Moreover, there is no need to clean and degrease the surface. This is new. It works as follows. Light a pencil, bring the burning end to the object being welded and carefully roll the pencil over the surface to be welded. The molten metal will adhere to the part and provide a reliable connection.

How to solder silver parts

You can't go anywhere without silver solder! Silver cannot be reliably soldered with tin. Although at first glance such a connection is strong, the metals react with each other, and the product crumbles after some time.

To ensure a high-quality connection of silver parts, you must use special silver solder. They come in three types: hard, soft and medium, differing in melting point (from 700 to 900 degrees).

Solder is selected depending on the type of metal and the requirements for joint strength. When manufacturing complex products in several stages, as well as when combining different structural elements, soft solders are used.

It should look like a small, very thin plate or wire. They cut it into small (millimeter) pieces. Soldering silver at home is done on a refractory brick, a piece of charcoal or a special ceramic tile. It is not recommended to perform soldering on a material that conducts heat well - it absorbs heating energy, and the soldered object does not heat up well.

You cannot use a simple wet brick, which crumbles under the influence of temperature due to the moisture it contains. Superheated steam will send a piece of brick straight into your face with great force.

To solder a part to an object, it is necessary to lubricate the cleaned and thoroughly degreased area with flux (ready mixture: boric acid, borax) or soldering acid. Removing grease, oxides and other contaminants is important. The degreased surface ensures a reliable connection with the solder. Jewelers, as a rule, use a weak acid solution for this purpose.

After preliminary preparation, you need to heat the object slowly and evenly, keeping the burner flame low, this promotes degreasing. The burner power is then increased, heating the entire item. The flame must move over the entire surface - directed only to one place can melt and deform the surface. A piece of solder, previously degreased and soaked in flux, is applied to the hot surface using tweezers.

The solder should melt instantly under the flame of the torch. The parts that are connected must be evenly heated. If one of the elements is not hot enough, a strong connection will not be achieved. The easiest way is to connect elements of the same mass and thickness.

The process of soldering a small element to a massive object causes big trouble. In this case, the smaller element is carefully heated first, then a small amount of solder is applied.

Heating should be gradual and last until the solder begins to melt. The burner flame is directed to the main object to heat the entire surface. The soldering area is constantly heated by the burner flame.

At the moment when the object reaches the desired temperature, solder with flux is applied.

Source: https://rem-serv.com/serebryanyy-pripoy-dlya-payki-nerzhaveyki/

Flux for brazing stainless steel

Any connection of two metal parts is a priori not a simple procedure. Soldering stainless steel with copper refers to this type of procedure.

When soldering any other material, as a rule, no problems arise, but not with stainless steel.

The entire soldering process is clearly regulated by state standards, however, there is one unusual feature.

Each type of metal is connected differently to a particular material; accordingly, for each type you need to use different solder and flux, which will be selected exclusively for this material.

But if you need to connect non-homogeneous (different) metals, you need to use fairly rare, highly specialized consumables.

Can you solder stainless steel with copper?

To begin with, it must be said that this process has an increased level of complexity. But despite this, it is possible to solder stainless steel using copper.

Most often, joints are made of parts made of one metal, that is, if you connect parts only from stainless steel or only from copper, the quality of the seam will be high.

But sooner or later a situation will arise when you need to solder these two materials together, and in this case you have to give in to the quality of the final result.

To perform this manipulation, special solders were created; with their help, it is possible to create connections of sufficiently high strength and it is quite enough to use the item in standard mode. If when soldering any other material there is no mandatory need to use flux, then complete preparatory procedures are required, including tinning.

Like any other soldering method, this one has its advantages and disadvantages . First, it’s worth considering the advantages of using :

using this soldering method it is possible to solve quite complex technological problems;
there is simply no alternative to this method that would allow joining copper with stainless steel at the same level;
The soldering process itself does not take much time; it does not require highly specialized tools; a regular torch will be sufficient;
modern technologies make it possible to create solders that cope quite well with joining dissimilar metals;
Stainless steel can be soldered to copper both on an industrial scale and at home.

Minuses:

the quality of the final result is at a fairly low level compared to other soldering methods;
Certain difficulties arise when selecting the right type of solder;
the flux used is very quickly subject to the oxidation process, so you need to start soldering immediately, without delaying the heat treatment;
in most cases, “light” solder is used for soldering, which significantly increases the complexity of the procedure due to the fact that there is a need for precise adjustment of the temperature regime used.

Methods for soldering stainless steel with copper

In order to make a connection of this kind, you can use several different methods. Oddly enough, they differ not in the type of solder, but in the tool with which the procedure will be performed. Most often, preference is given to connecting using a soldering iron or a gas torch.

The soldering iron is most often used when working with small parts. With its help, this is quite convenient to do, largely due to the fact that during operation the tool does not heat up much, which reduces the risk of burning through the part.

But there is also a downside to this method: the soldering iron is significantly inferior to the torch in power, which makes processing parts made of hard metals simply impossible.

In addition, it is difficult to process large surfaces with a soldering iron, since it will take quite a long time; most likely, by the end of the work, the flux will already oxidize.

The gas burner is used much more often. It can be used not only for soldering stainless steel with copper, but also with brass, nickel and other solders. A gas burner allows you to process fairly large surfaces, creating connections with a high level of tightness. The high speed of operation does not allow the flux to oxidize.

How to choose solder?

The final result of the quality of the work performed largely depends on the choice of a certain type of solder. It ensures complete filling of the treated surface. The most common and affordable method is to use brass solder to solder stainless steel to copper. In some particular situations it can be used even without using flux.

Important: the use of this type of solder is in many ways inferior in physical properties to other methods, however, due to its availability and simplicity, it can be used for soldering simple connections that will not incur a high level of responsibility.

In addition to the above method, you can also use solders from the following materials:

copper-phosphorus material - it can significantly improve the quality of the final connection, but the cost of this solder is quite high;
tin-silver material - the use of this type of solder is best suited for joining stainless steel with copper, however, the use of this method is associated with high financial costs;
To create the simplest connections, you can use ordinary radio consumables, but it is best to choose specialized material.

How to solder stainless steel to copper?

Soldering stainless steel to copper using brass or solders from other materials occurs as follows.

You must first prepare the surface for processing; to do this, you need to completely clean it of various contaminants, traces of corrosion, erosion, etc. You can use almost any solvent for this.
After this, you need to prepare the flux for work and tinning the parts in the area in which they will be connected to each other.
As soon as the flux is evenly positioned on the parts at the joints, you need to put the solder in the right place.
Next, you need to heat it with a burner until the consumable material begins to melt. Particular attention must be paid to this step, since you need to monitor the solder: it is necessary that it spreads evenly over the entire surface of the joint. It is worth noting that this step must be completed quickly enough; everything must be done before the flux begins to oxidize.
At the end of the operation, you need to let the soldering area cool down. To do this, you do not need to perform any intervention; the parts must cool naturally.

When performing the entire work process, it is imperative to follow safety precautions. The entire work process must be carried out strictly with protective gloves, since direct skin contact with solder can negatively affect its condition. This manipulation should be carried out by a professionally trained person who has experience and the necessary knowledge behind him.

Source: https://steelfactoryrus.com/flyus-dlya-payki-nerzhaveyki-tverdymi-pripoyami/

How to solder stainless steel and silver at home: tips for working and soldering technology

Technology for joining stainless steel parts

Unfortunately, soldering stainless steel is not such a simple process, and ordinary solders in the form of tin or copper will not do the job well. Solder for soldering stainless steel must contain silver. The industry produces it coated with flux (contains 30% silver). You can use solder containing zinc, copper and nickel.

What you need to solder stainless steel:

gas-burner;
solder containing silver and coated with flux;
soldering acid.

Technological process of soldering stainless steel with hard solders:

heating parts for degreasing;
surface treatment with orthophosphoric acid;
heating parts to a red glow;
supply of solder followed by heating.

To solder a hole in a stainless steel sheet at home, you need to determine its size and prepare an appropriate patch . Soldering must be performed according to technology using solder containing silver.

Nanotechnology: welding pencil

The easiest way to carry out welding work is with a special welding pencil. It can weld any metal: aluminum, iron, stainless steel, copper, brass. Moreover, there is no need to clean and degrease the surface. This is new. It works as follows. Light a pencil, bring the burning end to the object being welded and carefully roll the pencil over the surface to be welded. The molten metal will adhere to the part and provide a reliable connection.

How to solder silver parts

To ensure a high-quality connection of silver parts, you must use special silver solder. They come in three types: hard, soft and medium, differing in melting point (from 700 to 900 degrees).

Solder is selected depending on the type of metal and the requirements for joint strength. When manufacturing complex products in several stages, as well as when combining different structural elements, soft solders are used.

It should look like a small, very thin plate or wire. They cut it into small (millimeter) pieces. Soldering silver at home is done on a refractory brick, a piece of charcoal or a special ceramic tile. It is not recommended to perform soldering on a material that conducts heat well - it absorbs heating energy, and the soldered object does not heat up well.

The process of soldering a small element to a massive object causes big trouble. In this case, the smaller element is carefully heated first, then a small amount of solder is applied.

Heating should be gradual and last until the solder begins to melt. The burner flame is directed to the main object to heat the entire surface. The soldering area is constantly heated by the burner flame.

At the moment when the object reaches the desired temperature, solder with flux is applied.

Source: https://chebo.biz/stroyka-i-remont/remont-yuvelirnyh-izdelij-payat-serebro-v-domashnih-usloviyah.html

How to solder stainless steel to stainless steel

Features of stainless steel soldering

Using tin and compounds based on it, you can repair stainless steel products, as well as assemble homemade structures that are small in size and not subject to heavy loads. Kitchenware and other household items can be repaired with a regular soldering iron and tin solder.

Soldering of stainless steel in production is performed using a more complex technology. For soldering critical structures, special industrial mixtures containing Cr are used. POS-61 solder. Phosphoric and soldering acids.

soldering acid;
orthophosphoric acid ;
zinc chloride.

It is necessary to apply flux immediately before soldering, so that the oxide film does not have time to re-form.

Interesting: Phosphoric acid is part of Coca-Cola. A good reason to think about whether you should drink it.

Technology of soldering stainless steel with tin

It is very important to carry out the preparatory operations correctly and carefully. Their purpose is to remove oxide film and other contaminants from the surface of the stainless steel that prevent the formation of a strong and durable solder joint.

First, the surface is protected with sandpaper, a wire brush or a file. Next, after removing sawdust and abrasive particles, degreasing is carried out. To do this, take a special degreaser.

It can be successfully replaced by any organic solvent - acetone, white spirit, numbered solvents (646, 657), etc.

Immediately after degreasing, the soldering area is coated with a flux compound. (If flux is included in the solder rod, this step is not performed.)

Now the actual tin soldering begins. First, the soldering area is heated using a soldering iron tip or a gas torch. When soldering with a torch, the oxygen content should be monitored, since if it is in excess, oxidation processes will begin, deteriorating the quality of the connection. When the permissible oxygen concentration is exceeded, the flame acquires a light blue tint.

The principle of soldering stainless steel

The entire soldering area should be heated to the melting temperature of the solder.

Important! The solder should melt not from the tip of a soldering iron or the torch of a gas burner, but from the heat stored in the parts being soldered.

Solder must be supplied to the working area until it begins to appear from the working gaps between the workpieces. This will ensure optimal adhesion.

Soldering stainless steel at home

It often happens that a home handyman needs to repair household utensils and stainless steel dishes. To do this, it is necessary to prepare a certain set of equipment, as well as working and auxiliary materials.

In order to quickly and efficiently repair stainless steel products, you will also need to acquire a certain skill. Therefore, you should not immediately take on the repair of complex or large-sized products.

To get better at “feeling metal and fire,” it’s better to practice on spoons, mugs, or just scraps of stainless steel.

Soldering stainless steel at home

To work, you will need to equip a workplace. The work table must be metal or have a non-flammable coating. Exhaust ventilation must be equipped - both the fumes from the soldering compound and the flux and degreaser are harmful to the respiratory system. The parts to be soldered must be securely fastened with inventory fastening devices - vices, clamps, clamps, spacers.

The work area should not be cluttered; only parts to be soldered may be contained in it.

Containers with working fluids should be tightly closed immediately after use and stored in a cabinet or bedside table.

Source: https://crast.ru/instrumenty/kak-pripajat-nerzhavejku-k-nerzhavejke

Solder with silver for soldering stainless steel

Soldering stainless steel is a very labor-intensive process. By following the soldering technology and taking into account all the features, this procedure is greatly simplified.

The most technologically simple processes include soldering stainless steel with tin.

Features of soldering stainless steel

The use of tin solders is excellent for soldering small items, as well as repairs at home. Without any problems, you can solder a saucepan, bowl, mug or other household items made of stainless steel at home using a regular electric soldering iron and tin.

For particularly critical solder joints, special grade alloys based on phosphorus and nickel are used. In addition, materials from chromium, nickel, and manganese are widely used. This group is well suited for working in gases containing a mixture of boron trifluoride and argon. In this type of soldering, the solder can be copper in its pure form, which is excellent at wetting the metal, followed by a strong connection.

Before soldering stainless steel, it is recommended to familiarize yourself with the technological process, as well as the features of different methods of working with metal .

By watching the corresponding video, you can get detailed information about all the features of the working procedure.

Soldering a variety of products made from food and industrial stainless steel has many nuances that you pay attention to when choosing a soldering method, as well as the consumables required for this.

Equipment used

Correct work with stainless steel items requires theoretical training and familiarization with the process itself through video materials. To solder stainless metal at home, the following equipment and materials are used:

electric soldering iron about 100 W or a gas burner,
flux for soldering stainless steel in the form of a special soldering acid,
sandpaper, wire brush or file,
solvent (acetone),
solder,
protective gloves and cleaning cloth.

In addition to basic tools and materials, additional accessories may be needed depending on the type of part being processed. Soldering large-sized products may require the use of a higher-power electric soldering iron. This is necessary for good heating of the joints.

Please note that this power tool is used exclusively when working with soft (light alloy) solders such as POS or tin. Pure metal is excellent for repairing dishes where phosphoric acid is used as a flux.

It provides excellent adhesion of the alloy at the soldering site.

Types of solder and features of choice

You can solder objects made of stainless steel with your own hands using both soft and hard alloys. Solder for soldering light-alloy stainless steel contains lead and tin and is designated POS. Hard alloys consist of refractory metals.

The presence of tin gives the material high fluidity, as well as good ductility when molten. This is especially convenient when soldering stainless steel elements, since the tin-lead material has an excellent deoxidizing effect. Before soldering stainless steel with tin, the video will demonstrate to beginners all the features of this process.

The strongest connections are obtained using hard alloys. Soldering of stainless steel parts can be done with their help at home as well as in industrial conditions. Often, hard alloys contain technical silver . The value of this silver component can reach up to 30% of the total amount of metals in the alloy. Such carbide rods by the brand PSr.~

It is good to solder stainless steel products, copper, as well as brass, nickel, bronze, cast iron and other metals using HTS-528 alloy. Its surface initially has a reddish-colored flux layer, which makes it easy to solder a variety of objects. It should be taken into account that this rod melts at 760 °C.

Advantages and disadvantages of tin soldering

The use of tin materials has its own characteristics during operation. These soft alloys have some advantages that make the soldering process easier:

ease and speed of repair of small-sized products,
no lengthy preparatory procedure,
low price of consumables,
during processing, the fluidity of stainless steel decreases, which makes work easier,
high quality connections for many low-impact products.

In addition to the obvious positive qualities, there are also some disadvantages of using tin alloys:

soldering has low mechanical strength compared to other methods of making permanent connections,
reduction in the operating temperature of parts due to the presence of tin,
complications during soldering due to high fluidity.

Common Mistakes

The main problem when soldering objects made of stainless steel is the uneven distribution of the alloy over the area being treated. This occurs due to poor cleaning of the soldering area, as well as insufficient heating of the surfaces being joined, especially when they are large.

The work process is influenced by the correct selection of flux and appropriate solder. In addition to borax, soldering acids are used as the flux material used. Processing areas with tin can be difficult if the consistency is not correct. For good soldering it must be in liquid form.

Avoiding these basic soldering mistakes results in a joint that is highly strong and durable. Remember to let the joint seam cool. In this case, the product must not be subjected to mechanical stress or moved. At the end of the procedure, you should rinse the adhesive area thoroughly. This is necessary to remove flux and alloy residues from the surface of the part.

Technology of work execution

How to solder stainless steel at home? The beginning of the soldering procedure consists of preparing the products. To do this, they are cleaned of dirt and oxide film. Mechanical work is performed with sanding paper or a wheel, or a metal brush.

Before soldering any stainless steel, it is necessary to degrease the area with a solvent, acetone. The next stage consists of applying flux to the area of the object being processed. When using combined type solder, no flux material is used.

Source: https://varimtutru.com/pripoy-s-serebrom-dlya-payki-nerzhaveyki/

Soldering steel with silver solder

How is soldering better than welding?

The connection of stainless steel parts is carried out using two methods: argon welding and brazing. If the first method is not available, soldering is an alternative. The main advantage of this method is that expensive industrial argon welding equipment is unnecessary.

Soldering stainless steel with silver solder is available in garages and home workshops. For frequent cases it is cheaper and easier. But not everything is smooth here either. Stainless steel is a special metal; you can’t use soft solder on it. For reliable soldering you will need:

hard silver solder with silver content from 5% to 45%,
special flux (unless the solder is fluxed),
a good gas burner for soldering, capable of producing a flame of more than 2000 degrees Celsius (a burner with MAPP gas gives 2010 degrees, with propane - less).

That's right, silver melts at a much lower temperature. A high combustion temperature is necessary to quickly warm up the metal and reliably maintain the required heat level. Makes the soldering of stainless steel with silver solder high-quality, distributes the melt evenly, guarantees its penetration and spreading under the influence of capillary effect. And it creates conditions for making critical connections that will operate under load and pressure for many years.

Table 1 . Melting temperature of metals and solders

Preparing for successful soldering

The parts to be soldered are prepared, the shape and size of the joints are adjusted, so that the end result is a joint with a minimum gap. Surfaces are cleaned. It is better not to use a metal brush, as it will leave particles of shavings, which will then form rust. The parts are fixed relative to each other. Flux is applied to the surface around the joint.

If a fluxed rod is used, it is first heated with its side at the joint so that the fluxing substance on it melts and gets into the gap before soldering begins.

In some cases, in order to simplify and speed up direct soldering, the mating surfaces are soldered in advance and covered with a thin layer of solder. The tinned metal surface is better wetted by solder. But you need to take into account that the dimensions of the parts to be connected will change. For example, when soldering a tee, the diameter of the tube will increase, and the mounting hole will decrease.

Soldering

We light the burner with a piezo trigger. We warm up the soldering area, and not limit ourselves to the place at the very joint, we grab it wider, at a distance of 2-3 diameters. Large parts will require more heat to keep the metal cool during the soldering process. Otherwise, you won’t get a high-quality connection. You can use two- and even three-nozzle gas burners. Or use two burners to simultaneously heat both sides.

It is important not to stop the burner flame in one place, so that the metal does not overheat at one point, and it does not lead and melt. Warming up must be done by moving the nozzle evenly and slowly over the entire mating surface. The metal takes on a crimson hue and then turns red. We bring a rod of silver solder to the joint.

The flame torch should not be directed directly at the rod, but slightly ahead of the point of application of the rod. Due to the high temperature of the heated parts, the solder melts and penetrates well into the joint along the heated stainless steel. When the entire joint has been processed in this manner, soldering is complete. Let the product cool. Clean with a file and sandpaper, wash with water and a rag or sponge.

The finished connection can withstand high mechanical loads and pressure. Although the final check will occur during operation, as a rule, the quality of the soldering can already be observed visually. It is done!

What is the consumption of silver solder?

If the technology is followed, the consumption is very small. For example, to install a flange on a 1 1/2″ pipe you will need no more than 1 centimeter of rod.

The best option is, of course, a fluxed silver rod containing flux. Pick it up and solder without worrying about flux. The classic is orthophosphoric acid; it removes a thin layer of oxides well. Apply with a brush. An easy-to-prepare composition of equal parts phosphoric acid and borax is also known. Another composition: borax, sodium fluoride, boric acid. When buying in a store, we select flux for high-temperature soldering.

Comparison of silver solder and tin when soldering stainless steel

The advantages of tin are its low cost and low melting temperature; even a 60-watt electric soldering iron can handle it. It is quite suitable for tinning, sealing small holes, and making non-critical connections that will work under light load. And also for temporary solutions, in a hurry. You need lead-free tin solder.

The melting point of tin is 232 degrees, and silver is 962. Which of the melts will ingrain itself more firmly into the surface of a stainless metal? As they say, choose for yourself.

Which stainless steel cannot be soldered with hard solders?

Some types (grades) of stainless steel cannot be welded or soldered with hard solders (silver, brass), which is why internal corrosion begins in them.

These are austenitic stainless steels (named after the English metallurgist Austen), for example 12Х18Н9 (marking according to GOST - 0.12% carbon, 18% chromium, 9% nickel). There are 2 solutions: tinning with tin, because it is a soft solder and melts at 232 degrees. Or take a different brand of stainless steel.

For example, if the designation contains the letter T or B, then it can be subjected to any heat treatment (they are alloyed with titanium or niobium: the grades are designated 12Х18Н9Т or 12Х18Н9Б, respectively).

soldering stainless steel with silver solder

Sometimes brazing stainless steel is preferable to welding. Soldering is used for thin-walled products that are not subject to heavy loads, and in cases where they do not want to experience warping from heating.

Source: https://vi-pole.ru/pajka-stali-serebrjanym-pripoem.html

Soldering stainless steel with brass - Metalworker's Guide

Technology for joining stainless steel parts

How to solder silver parts

To ensure a high-quality connection of silver parts, you must use special silver solder. They come in three types: hard, soft and medium, differing in melting point (from 700 to 900 degrees).

It should look like a small, very thin plate or wire. They cut it into small (millimeter) pieces. Soldering silver at home is done on a refractory brick, a piece of charcoal or a special ceramic tile. It is not recommended to perform soldering on a material that conducts heat well - it absorbs heating energy, and the soldered object does not heat up well.

The process of soldering a small element to a massive object causes big trouble. In this case, the smaller element is carefully heated first, then a small amount of solder is applied.

Heating should be gradual and last until the solder begins to melt. The burner flame is directed to the main object to heat the entire surface. The soldering area is constantly heated by the burner flame.

At the moment when the object reaches the desired temperature, solder with flux is applied.

Source: https://ssk2121.com/payka-nerzhaveyuschey-stali-latunyu/

Solder for soldering stainless steel food grade

How is soldering better than welding?

Soldering

The flame torch should not be directed directly at the rod, but slightly ahead of the point of application of the rod. Due to the high temperature of the heated parts, the solder melts and penetrates well into the joint along the heated stainless steel. When the entire joint has been processed in this manner, soldering is complete. Let the product cool. Clean with a file and sandpaper, wash with water and a rag or sponge.

Source: https://MyTooling.ru/instrumenty/pripoj-dlja-pajki-nerzhavejki-pishhevoj