about the following plating processes
1. Water plating
The most common way of electroplating is an electrochemical process, using the positive and negative electrodes, current in the aqueduct, gold-plated, silver plated, nickel plated, chrome, cadmium plating, plating solution pollution is very large
2. The plating
Using the special configuration of the two kinds of coating liquid, the metal parts need to plating part of the "coating", in the region of the coating produces chemical reaction, pile out of a coating on the manual operation, used for artifacts on "loading" above, in order to achieve the size requirements, often used in diesel engine crankshaft, connecting rod, etc. There is pollution
3. The vacuum plating
metal heating electrode under high vacuum degree used to 200 degrees Celsius, make sublimation metal to produce steam, adhesion on the surface of plated parts, plating, commonly used metal cadmium, silver powder, often used in glass, mirror effect, cell phone lens. Almost no pollution
4. The sputtering
I've seen the samples, haven't seen a production process, from the name on the... Hey hey, to say. It is said that the pearl river delta region are few factories.
There will be other derivative of electroplating, such as "plating", "barrel plating.". And so on, are only different operation mode.