Effects of electrode wear on weld quality of hot galvanization steel with high strength in resistance spot welding

被引：0
|
作者：
Zhang, Xuqiang [1 ]
Zhang, Yansong [2 ]
Liu, Yancong [1 ]
机构：
[1] School of Mechanical Engineering, Petroleum University of China, Dongying 257061, China
[2] School of Mechanical Engineering and Power, Shanghai Jiaotong University, Shanghai 200030, China
来源：
Hanjie Xuebao/Transactions of the China Welding Institution | 2009年 / 30卷 / 10期
关键词：
Galvanizing - Welds - High strength steel - Welding electrodes - Wear resistance - Cracks;
D O I：
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中图分类号：
学科分类号：
摘要：
Electrode wear characteristics were studied; the electrode life of un-coated steels was much lower and pitting changed more obviously than that of galvanization steels when welding. The effect of electrode wear on weld quality was studied; the expulsion was serious and more micro-cracks were grown at early electrode wear stage, which decreased weld quality greatly. And then based on the experiment results of effect of electrode wear on weld quality, welding technique step-current was established according to the current density that micro-crack degree was less than 0.25 mm to reduce the effect of electrode wear on weld quality.
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页码：5 / 8
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