一、前言目前,铝型材表面着色,国内外均以电解着色为主,流行色为茶色和古铜色等。其中电解着色法的多于自然发色法,化学染色法和涂漆法的,约在40％以上。用电解着色来获得古铜色主要有两种工艺:低价锡盐(Sn~(2+))和镍盐(Ni~(2+))。由于采用Sn~(2+)盐获得古铜色色泽均一、附着性强、工艺稳定、色谱广泛(从浅古铜色直至黑色)而逐渐被采用,而且色膜的耐蚀、耐磨、耐候性方面不亚于Ni~(2+)盐法 First, the preface At present, the aluminum surface coloring, both at home and abroad are based electrolytic coloring, popular colors are brown and bronze and so on. Electrolytic coloring method which more than natural hair color method, chemical dyeing and painting method, about 40%. There are two main processes for obtaining bronze by electrolytic coloring: tin (Sn 2+) and nickel (Ni 2+). Due to its uniform color, strong adhesion, stable process, wide range of chromatography (from light bronze to black), Sn (2+) salt is used in color, corrosion resistance, abrasion resistance and weatherability of the color film In the Ni ~ (2+) salt method