On-line monitoring method for electrode invalidation during spot welding of zinc coated steel

作     者：Dong-Sheng Mei1 a Dong-Qing Li1b Zhong-Dian Zhang1c Ling Lan1 1. State key laboratory of advanced welding production technology harbin institute of technology 150001 china 

会议名称：《第五届国际材料与热加工物理模拟及数值模拟学术会议》

会议日期：2007年

学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

关 键 词：dynamic resistance on-line monitoring electrode invalidation 

摘      要：In the process of spot welding of zinc coated steel, because of the existence of zinc coat, the electrode invalidation is accelerated greatly, the electrode invalidation causes unacceptable welding quality. A collecting system is developed with a C8051F020 microcomputer as the controlling core, the whole variety trend of such parameters as welding current, supply voltage and dynamic resistance etc are obtained through the comprehensive processing towards the data collected. An on-line monitoring method is given through the relationship between electrode wear and welding parameters, which is valuable for the industrial production.