A chromium-free colorful passivation technology for zinc coating was developed. 研究了用于锌镀层彩色钝化的无铬钝化液最佳配方及工艺。
Process control of phosphating including analysis of the solution,inspection and quality control of the film is described. 介绍磷化工艺过程中的工艺管理,如磷化液的分析,磷化膜的检测和质量控制等。