Electroplating is the process of plating a thin layer of other metals or alloys on the surface of certain metals using the principle of electrolysis. It is the process of using electrolysis to attach a metal film to the surface of a metal or other material to prevent metal oxidation ( Such as rust), improve wear resistance, electrical conductivity, reflectivity, corrosion resistance (copper sulfate, etc.) and enhance aesthetics. The outer layer of many coins is also electroplated.
Packing black is also called boiling black or blackening. It is a common method of chemical surface treatment. The principle is to produce an oxide film on the metal surface to isolate the air and achieve the purpose of rust prevention. Blackening treatment can be used when the appearance requirements are not high. The surface blackening treatment of steel parts is also called blue.
As can be seen from the above introduction, electroplating will plate a layer of other metals or alloys on the surface of the workpiece, and black coating is to generate a layer of oxide film. The principles of the two processes are also different. Electroplating uses the principle of electrolysis, and coating black is used Chemical method to cook.
