黄铜药筒低铬至无铬钝化工艺技术研究

介绍了黄铜药筒低铬至无铬钝化的工艺研究过程,其中低铬钝化工艺技术、超低铬钝化工艺技术、单宁酸协同缓蚀剂钝化配合微铬封闭工艺技术、防变色剂钝化工艺技术均能满足产品要求。北方华安工业集团有限公司采用的一种微铬钝化的工艺———单宁酸协同缓蚀剂钝化,封闭液铬酸酐含量小于1g/L,已应用在黄铜药筒的钝化生产上,从而结束了黄铜制品高浓度铬酸酐钝化的历史,污水处理成本低,既降低了生产成本,又解决了高铬对水质的污染问题,对节能减排、节约降耗具有显著的经济效益和社会效益。

Research on Process of Low Chromium to None Chromium Passivation on Brass Shell

Process research of low chromium to none chromium passivation of brass shell was introduced, all of that canmeet the requirements of products such as process of low chromium passivation, process of super low chromium passivation, process of tannate cooperation inhibitor with small amount of chromium disablement, process of anti-blushing agent passiva- tion. Nowadays, one of the small amount of chromium passivation of our plant, that is tannate cooperation inhibitor passiva- tion, content of chromic acid of sealing fluid is lower than 1 g/L, and was applied in the process of brass shell passivation, which ends the history of high concentration chromic acid. Sewage treatment costs were low, which not only can reduce cost of producing, but also solve the problem that exit almost forty years. It does benefit to latter generation, and has obviously economic benefits and social benefits.