How to remove the silver coating?

(1) The composition and operating conditions of the stripping solution for silver plating on copper and copper alloys are as follows:

a) Chemical method

Sodium cyanide 15 g/L

Hydrogen peroxide 15~30g/L

Temperature room temperature

Until the time is closed

b) Electrolysis method

Potassium cyanide 50~100g/L

Cathode stainless steel plate

Anode current density 0.3～0.5A/dm2

Until the time is closed

(2) Removal of silver coating on white metal The solution composition and operating conditions of the electrolysis method are as follows:

Sodium cyanide 30g/L

Temperature room temperature

Cathode stainless steel plate

Voltage 4V, anode electrolysis

Until the time is closed

(3) The composition and operating conditions of the stripping solution for silver plating on steel parts are as follows:

Potassium nitrate 100～200g/L

Ammonia 50～150mL/L

Temperature room temperature

Anode current density 0.5~1A/dm2

Until the time is closed