TH4485C3 - Silver Plating Solution Preparation and Its Use - Google Patents

Abstract

The method for preparing the silver plating solution involves several steps. These include pure silver metal, nitric acid (HNO3), sodium chloride (NaCl), sodium cyanide (NaCN), and distilled water. The preparation process involves several steps: Step one: Melt the pure silver metal, pour it into a mold, and let it cool. Roll the silver into thin sheets, then break it into small pieces. Boil these pieces in nitric acid until completely dissolved. Rinse the prepared salt solution to remove the acid, obtaining a silver flake precipitate. Boil distilled water and the melted silver, add sodium cyanide and stir until dissolved. Add the prepared silver flake precipitate and stir until dissolved. This yields a 100% concentrated silver plating solution. Step two: The silver plating solution can be used at either a 100% concentration or a lower concentration.

Claims (4)

1. Method for Preparation of Silver Plating Solution and Its Use It consists of 2 steps involved: the silver plating solution preparation algorithm. And the process of using silver plating solution Step one Is the procedure for preparing the silver plating solution In the case of preparing a 1 liter silver plating solution, there are different steps involved. For example, molten pure silver with volume 3.0-5.0 g at temperatures between 200-500 ํ C is poured pure silver metal into a mold and let it cool until it hardens for 10-30 minutes to form a metal ingot. money The silver ingots are rolled into thin sheets with a metal rolling machine. And / or use the method to heat the silver ingots again and use the hammer forging. It was then passed through a rolling roller to a 0.1-0.05 mm thin sheet. The rolled silver sheet was then subverted into small pieces of silver by cutting metal scissors. And / or using a metal shredder Bring 0.1-15 liters of nitric acid to a boil. Put the prepared tiny bits into the boiling nitric acid. Stir thoroughly for 2 to 5 minutes to dissolve the tiny pieces of silver. Then lift it to cool at room temperature for 1-1.5 hours. Prepare 4-6 liters of brine using ratio of 10 parts water to 1 part salt. For example, 4-6 liters of water per 400-600 grams of table salt. Bring table salt to soak in water until the salt dissolves into salt water. Pour the brine slowly into nitric acid with dissolved silver particles. And get a silver sludge Pour all of the solution, leaving only the silver sludge Bring 1 liter of distilled water to a boiling point. Add 10-15 grams of sodium cyanide and stir to dissolve. Then add all the sediment from the previous step. Stir to dissolve for 5-10 minutes to get a 100% concentrated silver plating solution. 2. Silver Plating Solution According to the claim No. 1. Which consists of 3.0 -3.5 g of pure silver metal, nitric acid or nitric acid (HNO3), 0.1-0.15 l, sodium chloride or table salt (NaCl) 400-600 g, sodium cyanide or alkali, 10-15 g of NaCN and water. 5-7 liters of distillation 3. Silver Plating Solution According to claim No. 1. or 2. Where a 100% concentrated silver plating solution can be used to plating the desired workpiece immediately. 4. Silver plating solution According to Clause 1. or 2. Where a 100% concentrated silver plating solution can be mixed with boiled distilled water and sodium cyanide. To be used to plating parts at a concentration less than 100% 5. Silver plating solution. According to the claim No. 1. or 4. Any of the above Where metals that can be plated are copper or rhodium or brass. Or silver alloy containing less than 70% silver