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自镀锌钢材问世以来,锌层表面钝化的研究,一直是镀锌技术的一个重要分支。这是由于,只有在锌层表面形成具有一定耐蚀能力的钝化膜,才能在一定期间内保护锌层不致产生白锈,随着热镀锌、电镀锌两大类镀锌工艺及镀锌品种的发展,锌层表面钝化技术也必然随之而发展。近年来,为适应连续镀锌机组速度高的工艺特点,国外对钝化技术的研究更为活
Since the advent of galvanized steel, the study of passivation of the zinc layer has been an important branch of galvanizing technology. This is because only formed on the surface of the zinc layer has a certain corrosion resistance of the passivation film in order to protect the zinc layer will not produce white rust for a certain period of time, with the hot-dip galvanizing, galvanized two types of zinc plating process and galvanized Variety of development, zinc surface passivation technology will inevitably follow. In recent years, in order to meet the continuous high-speed galvanized steel process characteristics of foreign passivation technology research more live