一、概况黑色给人一种肃穆、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,而且耐腐蚀性和耐磨性均优。据日本有关报导,镀锌黑色钝化有 First, an overview Black gives a solemn, solemn, perseverance feeling, in the machinery, instruments, construction hardware and daily paint parts indispensable black combination match. Therefore, foreign countries (especially Japan) pay more attention to the 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. According to reports from Japan, there is galvanized black passivation