电焊机2017，Vol.47Issue(5)：82-84,3.DOI:10.7512/j.issn.1001-2303.2017.05.17
镀锌板无飞溅点焊电极设计及试验
Design and experiment of the electrode for spatter-free spot welding of the galvanized steel sheets
摘要
Abstract
In the spot welding of galvanized sheet steel in automotive industry,the spatter and the narrow range of adjustable welding parameters are important quality issues.To solve the problem,a new electrode is designed,having a small blind hole on the tip of the traditional flat tip electrode.The test results show that under the fixed condition of 2.0 kN electrode force and 200 ms welding time,the intervals of welding current with spatter-free of the new electrode and traditional one are 6.5～9.5 kA and 6～7 kA,respectively.Furthermore the nugget size is not less than 5 mm and the tensile shear strength is greater with the new electrode.The new electrode having a small hole on the tip reduces welding spatter effectively and widens the parameter range,with which it is possible to improve the spot welding quality and the efficiency of automotive body assembly and to reduce the reworking in the shop.关键词
汽车/点焊/镀锌板/电极/飞溅Key words
automotive/spot welding/galvanized steel sheet/electrode/spatter分类
矿业与冶金引用本文复制引用
徐世龙,朱加雷,王吉仁,郭纪贤..镀锌板无飞溅点焊电极设计及试验[J].电焊机,2017,47(5):82-84,3.基金项目
北京市教育委员会2015年度创新能力提升计划项目(TJSHG2015101017023) （TJSHG2015101017023）
2016年北京高等学校高水平人才交叉培养“实培计划”大学生毕业设计(创业类)支持计划 （创业类）
