Electroplating of locks, lighting and decorative hardware

Plating processing of locks, lighting, decorative hardware, about 40-50% are exported to the United States, Western Europe and other places, high-end locks In the past, electroplating processing was almost taken over by Xiaolan, Zhongshan, Guangdong, with major lock manufacturers such as Guli and Huafeng, and electroplating of high gear locks, lighting, and decorative hardware in Wenzhou. Now Wuxi, Kunshan, Jiangsu, Qingdao, Shandong and other places have high-end processing. Economically developed areas and coastal areas have a quick understanding and response to the needs of electroplating in the international market. Therefore, new plating species and new processes are accepted and practiced quickly. All kinds of gun black and pearl black alloys, and various types of grains of sand Electroplating applications with surface nickel and multiple tones are very popular.

The base materials of locks, lighting, and decorative hardware are mostly zinc alloy, steel parts and copper parts. The typical electroplating process is as follows:

(1) Zinc-based alloy die-casting parts

Polishing—Trichloroethylene degreasing—hanging—chemical degreasing—water washing—sonic cleaning—water washing—electric degreasing—water washing—salt activation—water washing—pre-plated alkaline copper—recycling—water washing—H2S04 neutralization —Washing—Pyrophosphate Copper plating—Recycling—Water washing—H2S04 activation—Water washing—acid bright copper—Recycling—water washing—a), or other (b to e)

a) Black nickel-plated (or gun black) washing-drying-drawing-spray painting → (red bronze)

b) —Bright nickel plating—recycling—washing—chrome plating—recycling—washing—drying

c) —Imitate gold—recycle—wash—dry—spray—dry

d) —Imitate gold—recovery—washing—black nickel plating—washing—drying—drawing—painting—drying—(green bronze)

e) —Pearl nickel plating—washing—chrome plating—recycling—washing—drying

(2), steel parts (bronze parts)

Polishing—sonic cleaning—hanging—chemical degreasing—cathode electrolytic degreasing—anode electrolytic degreasing—water washing—hydrochloric acid activation—water washing—pre-plated alkaline copper—recycling—water washing—H2S04 neutralization—water washing—acid bright Copper-recovery-water washing-H2S04 activation-water washing (red bronze, chrome plating, imitation gold, green bronze, pearl nickel process is the same as zinc-based alloy parts)