Steel plate must have a passivating treatment after hot galvanizing, the manufacture was delayed by undesirable passivating results, which were caused by unreliable performance of passivator.

• 钢板在镀锌后表面要进行钝化处理,但有时会出现钝化剂的性能不稳定、钝化效果不理想的现象,致使生产不能顺利进行。