不同镀层热成形钢的涂装性能对比研究

周林, 王辉, 姜进京

doi:10.16577/j.cnki.42-1215/tb.2021.03.018

材料保护 >

2021 , Vol. 54 >Issue 3: 106 - 108

DOI: https://doi.org/10.16577/j.cnki.42-1215/tb.2021.03.018

工艺探讨

不同镀层热成形钢的涂装性能对比研究

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1上汽集团商用车技术中心； 2马鞍山钢铁股份有限公司

王辉(1992-)，助理工程师，主要从事涂装应用技术，电话：18155530556，E - mail：1146613409@qq.com

收稿日期: 2020-11-20

网络出版日期: 2025-07-10

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Comparative Study on the Coating Properties of Hot - Formed Steel with Different Coatings

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(1. Commercial Vehicle Technology Center of SAIC Motor, Shanghai 200438, China;2. Ma’anshan Iron & Steel Co., Ltd., Ma’anshan 243000, China)

Received date: 2020-11-20

Online published: 2025-07-10

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摘要

近年来，镀层热成形钢零部件大量应用于车身，较好的涂装性能是零部件获得良好耐蚀性的关键因素。为此，通过使用涂装模拟试验、扫描电镜、磷化膜重测试、循环腐蚀测试等方法对比研究了锌基镀层热成形钢与铝硅镀层热成形钢的磷化性能及涂装后的腐蚀性能。结果表明：(1)锌基镀层热成形钢的磷化膜较铝硅镀层热成形钢的更均匀，符合当前车厂一般标准要求；(2)锌基镀层热成形钢在电泳涂装后有更好的划痕腐蚀性能。

关键词： 锌基镀层; 铝硅镀层; 热成形钢; 磷化膜; 涂装性能; 表面形貌; 划痕腐蚀

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周林, 王辉, 姜进京 . 不同镀层热成形钢的涂装性能对比研究[J]. 材料保护, 2021 , 54(3) : 106 -108 . DOI: 10.16577/j.cnki.42-1215/tb.2021.03.018

Abstract

In recent years, coated hot - formed steel parts have been widely used in car bodies, and a good coating performance is a key factor for these parts to obtain good corrosion resistance. For this, in this work, the coating simulation test, scanning electron microscope, phosphating film retest, cyclic corrosion test and other methods were used to contrastively study the phosphating performance and corrosion resistance after coating of zinc - based coating hot - formed steel and aluminum - silicon coating hot - formed steel. Results show that: (1) The phosphating film of zinc - based coating hot - formed steel was more uniform than that of aluminum - silicon coating hot - formed steel, which could meet the general standard requirements of current car manufacturers. (2)Zinc - based coating hot - formed steel possessed better scratch corrosion performance after electrophoretic coating.

Key words： zinc - based coating; Al - Si coating; hot - formed steel; phosphating film; coating performance; surface morphology; scratch corrosion

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