Silvering of metals. simple recipes

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FACTORY TECHNOLOGIES AT HOME - SIMPLE RECIPES
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Silvering of metals. Simple recipes and tips

Factory technologies - simple recipes

Directory / Factory technology at home - simple recipes

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For silvering of small items made of zinc, copper and brass the following method is proposed: a dough is prepared from 125 parts of table salt, 125 parts of cream of tartar and 2 parts of freshly precipitated silver chloride. Two parts of this dough are mixed with 100 parts of water, the liquid is heated to a boil, and items placed in a porcelain sieve are introduced into it. Items should remain in the boiling liquid for a relatively long time.

For silvering objects by rubbing, the following mixture is recommended: 1 part silver chloride, 3 parts salt and 3 parts cream of tartar. For silvering with zinc contact, i.e. bringing the metal surface into contact with a zinc rod, take 10 parts of silver nitrate, douse with a sufficient amount of hydrochloric acid, precipitate and wash the precipitated silver chloride. The latter is dissolved with 70 parts of ammonia and 40 parts of potassium cyanide, 40 parts of soda, 15 parts of sodium chloride and 1000 parts of water are added to the solution.

For copper silvering 3 parts of silver nitrogen salt, 2 parts of sodium chloride and 210 parts of cremortartar are mixed. For silvering, take a little of this powder and rub the cleaned surface of the copper object with a rag soaked in water.

For copper silvering the following liquid can be successfully used: 6 parts of silver chloride, 10 parts of potassium oxalate, 14 parts of sodium chloride and 21 parts of ammonium chloride are dissolved in 30-7,5 parts of water.

For silvering copper and brass use the following liquid: 30 parts of nitrogen-silver salt are dissolved in 100 parts of distilled water, a solution of 10 parts of sodium chloride in 100 parts of distilled water is added with constant stirring, and a mixture is added consisting of 65 parts of chalk, 30 parts of cream of tartar, 150 parts of ammonia ( specific gravity 0,960) and 60 parts of distilled water. The mixture is stored in a dark place.

Silver-coated objects made of copper, brass or iron (previously coated with a layer of copper by lowering into a solution of copper sulphate) are thoroughly cleaned and rubbed with the above mixture using a cloth until a layer of silver is obtained. Finally wash off with warm water. The mixture is stored in orange bottles in a dark place.

Rubbed silver

1st recipe:

Silver chloride 300 g;
Table salt 300 g;
Elutriated chalk 200 g;
Potash 600 g.

mix these substances. Completely clean the object from dirt and traces of fats or oils, rub with a raw piece of the above mixture, then rinse with water and polish.

2st recipe:

Nitrogen silver salt 100 g;
Potassium cyanide 300 g.

Both compositions are mixed; spread the resulting pasty mass on a woolen cloth and rub the object with it, then wash it with water and rub it with a piece of leather until it shines. It turns out an even beautiful layer of silver.

When using this recipe, we strongly recommend that you wear rubber gloves and generally work with extreme caution, since potassium cyanide is one of the strongest poisons and you need to be extremely careful when working with it.

3st recipe:

Silver chloride 300 g;
Table salt 600 g;
Wine stone 600 g.

Silver chloride, cream of tartar and table salt are mixed in such an amount of water that a pasty mass is obtained. This mixture is used for silvering buttons.

4st recipe:

20 g of nitrogen-silver salt are dissolved in 100 g of distilled water and a solution of 50 g of potassium cyanide in 100 g of water is added. Both solutions are mixed well and filtered. Separately mixed 10 wt. hours of chalk with 1 wt. hours of cream of tartar and the resulting powder are kneaded with the appropriate amount of the above filtered solution to obtain a not very thick mass suitable for application to objects. After silvering, the item is washed, dried and polished.

Wet silver plating (dipping)

Well pre-cleaned items are dipped in a liquid made according to one of the following recipes:

Silver plating liquid

Carbon-silver salt 10 g;
Sodium sulphate salt 100 g;
Water 100 g.

Salts are dissolved in water with frequent stirring, and then the saturated solution is drained from the undissolved precipitate of carbon-silver salt remaining at the bottom. The objects immersed in this solution are touched with a zinc stick (the contact method of silvering).

"Argentine" (liquid for silvering)

Nitrogen silver salt 5,5 g;
Potassium cyanide 60 g;
Sodium sulphate salt 10 g;
Ammonia 6 g;
Elutriated chalk 10 g;
Water 100 g.

To obtain thicker layers of silver, a mixture is made of 10 g of silver chloride, 70 g of ammonia, 40 g of potassium cyanide, 40 g of crystalline soda, 15 g of sodium chloride. Top up with distilled water so that the total volume is 1 liter. Items are immersed together with a piece of zinc or placed on a zinc plate.

"Argentine"

Nitrogen silver salt 11 g;
Potassium cyanide 60 g;
Elutriated chalk 750 g;
Water 60 g.

The mixture is stored in a dark glass vessel. When used, one part of the mixture is mixed with two parts of rain or distilled water and the object intended for silvering is lowered into it; large objects are rubbed with a sponge or rag soaked in this mixture.

After silvering, the objects are rubbed with elutriated chalk and polished with a soft piece of leather.

Silver plating when heated

1st recipe:

Tartar powder 600 g;
Table salt 600 g;
Silver chloride 100 g.

Silver chloride is mixed with tartar and table salt, a little water is added to make a liquid slurry. Store in a dark place in a well-sealed dark glass container.

Items to be silvered are immersed in a solution of the above components and boiled for 15-20 minutes. For 5 liters of water, take 3 tablespoons of the composition for silvering. Silver is produced in a copper cauldron. The objects are placed in a clay sieve, lowered into the cauldron with strong stirring, after which the object is immediately covered with a thin layer of silver.

The resulting silver layer is beautiful and durable, but lacks luster. To give shine, objects removed from the solution are heated to 70-80 ° C in the following solution:

Sodium sulphate salt 300 g;
Acetic lead salt 100 g;
Water 4,8 l.

Lead sulfide begins to be released from the solution, and after 10-15 minutes, the objects receive the proper shine.

2st recipe:

A concentrated solution of silver nitrate salt is added to a solution of sulfur sodium salt with a strength of 22 °Be until the precipitate that appears dissolves. The resulting solution is a liquid for silvering when heated. Prolonged treatment with this solution gives a matte finish.

3st recipe:

Dissolve 35 g of potassium cyanide in 0,5 l of water and add to a solution of 10 g of nitrogen-silver salt in 0,5 l of water. The solution is heated in porcelain or enamelware to 80-90 ° C and objects are immersed in it.

Author: Korolev V.A.

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