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为了提高钢铁零件抗蚀性能及外观装饰防护性 ,人们大多用镀锌彩色钝化作为涂漆的前道工序 ,但产品质量常出现一些问题 ,如钝化膜脱落、漆层脱落、起泡等。若镀锌层磷化后作为烘漆或喷漆的底层 ,则结合牢固 ,能防止漆膜脱落 ,使金属零件的抗蚀能力提高 ,使用寿命延长。此外 ,它
In order to improve the corrosion resistance of steel parts and the appearance of decorative protective, most people use galvanized color passivation as the coating process, but the quality of products often have some problems, such as the passive film off, paint off, blisters, etc. . If the galvanized coating is used as the bottom layer of baking varnish or lacquer after phosphating, the combination of firmness can prevent the paint film from falling off, improve the corrosion resistance of metal parts and prolong the service life. In addition, it