The invention provides an aluminum
alloy cyanide-free and
nickel-free
electroplating method, the method includes that matrix material is sequentially dipped with
zinc, then is electroplated with non-
cyanide alkaline
copper, acid
copper, white
copper tin and is electroplated with trivalent
chromium. The invention also provides the products which are prepared by using the method of the invention. The
coating of the
electroplating products which are obtained by using the
electroplating method of the invention has no pockmark, the bonding force is high, the
corrosion resistance of the
coating is high, and the surface of plating article is level and attractive. The method of the invention uses the non-
cyanide alkaline copper to precoat and prime, then performs the acid copper electroplating, meanwhile the non-cyanide white copper
tin system replaces the common
nickel plating process, thereby the
nickel allergy of
human body is decreased, at last the trivalent white
chromium electroplating is implemented. The application range of the preparation method is wide, and is applicable to various aluminum
alloy materials, the process is environmental friendly and has no
pollution, and is nontoxic and harmless.