论文部分内容阅读
黑色给人一种肃穆、庄严、坚毅的感觉,在机器、仪表、建筑五金和日用涂装零件中少不了黑色的组合匹配。因此近年来国外(特别是日本)比较重视镀锌黑色钝化工艺。优质的黑色钝化膜不仅黑度高、颜色均匀,而且耐蚀性和耐磨性均优。国内有的采用铝酸铵一氨水工艺,有的采用武汉材保所研制的ZB-82型镀锌层黑色钝化工艺。我们进行了锌黑色钝化新工艺的研究。试验成功了含铬酸钾2克/、成本只有0.3元/升的超低浓度铬酸黑色钝化
Black gives a solemn, solemn, resolute feeling, in the machinery, instruments, construction hardware and daily paint parts indispensable combination of black. Therefore, foreign countries (especially Japan) attach more importance to galvanized black passivation process in recent years. High-quality black passivation film is not only black, uniform color, and corrosion resistance and wear resistance are excellent. Some domestic use of ammonium aluminate ammonia process, and some developed by Wuhan Material Protection Institute of ZB-82-type black galvanized black passivation process. We conducted a zinc black passivation of new technology research. The trial was successful with potassium chromate 2 g /, the cost of only 0.3 yuan / liter of low concentrations of chromic black passivation