铝硅合金铸造工艺品装饰镀金工艺

Decorative gold plating process of Si-Al Alloy Casting artware

本文研究了铝合金压铸件预镀锌合金配方和工艺,预镀液主要是由含金属锌、镍、铁的化合物及无氰的有机络合剂组成。预镀膜是Zn Ni Fe合金,膜层光滑致密,呈半光亮米黄色。随后电镀中性镍、光亮铜、光亮镍及镀金。镀层结合力及耐蚀性试验取得令人满意的结果。本文还介绍了各步工艺要点,尤其是铝合金铸件的电镀前处理技术。

Strike zinc alloy plating process on artware of aluminum alloy die casting was studied. Strike plating solution was mainly composed of zinc, nickel, iron metal compounds and cyanidefree organic complexant. Strike plating film obtained consisted of ZnNiFe alloy with smooth, fine appearance and semibright creamcolor. Consequently neutral nickel, bright copper, bright nickel and decorative gold plating were applied. Test of adhension and corrosion resistance showed good results. Keypoints in each step were introduced, particularly in preplating.