Automobile Technology & Material
Application of the Hot-dip Galvanized Zn-al-mg Alloyed Coating Steel Sheet on Automobile Body
Jiang Guangrui1,2, Zheng Xuebin1, Zhao Xiaofei1, Zhang Yongqiang, Li Min1
(1. Shougang Research Institute of Technology, Beijing 100043;
2. Beijing Key Laboratory of Green Recyclable Process for Iron & Steel Production Technology, Beijing 100043) Abstract:the characteristics of hot-dip galvanized Zn-al-mg alloyed coating steel sheet are compared with the traditional hot- dip galvanized steel sheet through tests, including coating test, spot welding test, corrosion test, stamping test and bonding test, to evaluate its application potential on the automobile body. Test results reveal that the hot- dip galvanized Zn- Al- Mg alloyed coating steel sheet has better corrosion resistance and larger components formation safety margin. Therefore, applying such steel sheet could remarkably prolong the lifetime of the automobile body and improve automotive body parts forming efficiency. Key words: Zn-al-mg alloyed coating, Hot-dip galvanized, Automobile body, Anti-corrosion, Formation
1 前言
80
上世纪 年代末,日本研究人员开始研究在传
Mg
统纯锌镀层中添加微量的 元素,以提高镀层的耐
腐蚀能力[1-2]。随后,Nisshin Nippon Steel
公司和 公司
先后开发了商业化的锌铝镁镀层产品[3-4]。这些锌铝
Al 6% ~11%,Mg
镁镀层产品镀层中 元素含量为 元素
3%,具有优异的大气耐腐蚀性能[5-
7],在建筑
含量为行业具有广泛的应用。随后,欧洲的研究者将锌铝
镁镀层产品尝试应用在汽车车身上[8-11],开发出了多
种适用于汽车车身制造的锌铝镁镀层产品[9,11- 14],镀
Al 1% ~3%,Mg
层中的 元素含量范围为 元素含量范
1% ~2%。BMW
围为 公司在此方面进行了大量的应
用研究[15],认为锌铝镁镀层产品具有优异耐蚀性能和[16]。
耐磨特性,并且已经用于制造车身内外覆盖件
Volvo
公司也研究了锌铝镁镀层产品在汽车车身制造上的应用,认为这种镀层具有更低的摩擦系数,有利于零件冲压成形,并成功用于制造车身翼子板
零件[17]。
目前,德国汽车工程学会已经将锌铝镁镀层
作者简介:蒋光锐(1982—),男,高级工程师,博士学位,研究方向为热浸镀技术和产品。
参考文献引用格式:
蒋光锐, 郑学斌, 赵晓非, 等. 汽车车身用热浸镀锌铝镁镀层钢板[J].汽车工艺与材料, 2021(4): 12-22.
JIANG G, ZHENG X, ZHAO X, et al. Application of the Hot-dip Galvanized Zn-al-mg Alloyed Coating Steel Sheet on Automobile Body[j]. Auto⁃ mobile Technology & Material, 2021(4): 12-22.