- Oct 18, 2018 -
Cyanide-free electroplating refers to a new electroplating process that replaces the highly toxic cyanide electrolyte with a non-cyanide electrolyte. It has been widely used in the production of electroplating copper electrophosphate, zinc electroplating zinc, zinc electroplating zinc, pyrophosphate electroplating zinc-nickel-iron ternary alloy. In addition, the use of silver sulfate plating, ammonia carboxylate-ammonium salt plating cadmium, pyrophosphate electroplating copper-tin alloy and other non-cyanide plating processes. Cyanide-free plating prevents workers from being poisoned by cyanide and polluting the environment.
In order to make the plating layer smooth and firm, the formulation of the plating solution in industrial production is often complicated. In the past, cyanide was commonly used as a complexing agent to prepare a plating solution. However, due to the high toxicity of CN-, the health of electroplating workers is greatly damaged. At the same time, the discharge of sewage and exhaust gas containing CN- also seriously pollutes the environment. Therefore, electroplating is now mainly used for cyanide-free plating. Cyanide-free plating is electroplating plating without CN-.