Supply of gold and silver plating electrolysis protection powder

. OY-218 gold and silver electrolysis protection powder a scope and characteristics: The process for improving the imitation gold, silver, tin, gold roses, Japanese gold, gun color, sandblasting, bright copper coating and the metal anti-color capability. Its features are as follows: 1. For the above coating and the metal, this electrolytic passivation process than chemical passivation process; 2. single powder, easy to use, control and management easy. Two recipes and working conditions: Name of electrolytic passivation process gold and silver powder range of 80 g / liter cathodic current density 1-1.5A / dm2 PH value 8-9 12.5-14.0 concentration, room temperature electrolysis anode passivation of stainless steel time 1-1.5 minutes when the plating as the cathode. The above process can also be adapted to deal with three open cylinder chemical immersion program:... A 1/2 to 2/3 of the water added to the electrolytic tank protection; b electrolysis protection powder required for the component added to the tank, then stir until completely dissolved. (Note: may generate heat, while stirring, please note); c add water into the tank to the required component. Four considerations: 1. Passivation powder supplement: a PH value of the electrolyte according to availability. PH value can be maintained within the range 12.5-14.0;. B concentration is maintained at between 8-9. 2. Keep the anode surface clean: if the anode surface to produce a black film, foreign economic relations should be made after the tank washing → acid → washed clean, and then back into the plating bath. 3. In order to ensure the quality of passivation, the bath PH value should not be less than 12.5, the current 1A / dm2 or more, as compared to the constant voltage 5-6V. V. Packaging: 20 kg / barrel.