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一、概况随着钢铁材料及涂镀技术的发展,人们对镀层钢材耐蚀性提出了更高要求,传统的热镀锌镀层(纯锌镀层)钢材已经不能满足应用要求,高耐蚀的55%Al-Zn、Zn-5%Al和锌铝镁(Zn-Al-Mg)合金镀层成为镀层材料发展的重点。尤其是Zn-Al-Mg合金镀层,由于具有高耐蚀性和端口耐蚀保护等特点,成为目前镀层钢板的最优选择。锌铝镁镀层钢板具有超强的抗腐蚀性、耐磨性、耐涂装性和良好的焊接加工性能,可适应各种恶劣环境,是一种新型的环保节能型钢板;其切口及打孔位置具有自愈功能,无需后处理,这一特殊性能克服了传统镀层板的先天缺陷,综合性价比
I. Overview With the development of steel materials and coating technology, people have put forward higher requirements on the corrosion resistance of coated steel. The traditional hot-dip galvanized steel (pure zinc coating) has been unable to meet the application requirements. The high corrosion-resistant 55 % Al-Zn, Zn-5% Al and Zn-Al-Mg alloy coating become the focus of the development of coating materials. In particular, Zn-Al-Mg alloy coating, due to its high corrosion resistance and port corrosion protection and other characteristics, become the best choice of coated steel. Zinc-aluminum-magnesium-coated steel plate with super corrosion resistance, wear resistance, coating resistance and good welding performance, can adapt to a variety of harsh environments, is a new type of environmentally friendly energy-saving steel; the incision and drilling Position with self-healing function, without post-processing, this special performance to overcome the inherent defects of the traditional plating board, a comprehensive cost-effective