超高强马氏体钢中频、电伺服点焊技术  

Study on spot welding of UHSS using IF inverter & servo welding gun system

作　　者：陈树君[1] 于洋[1] 王超[1] 卢振洋[1] 

机构地区：[1]北京工业大学汽车结构部件先进制造技术教育部工程中心,北京100124

出　　处：《电焊机》2010年第5期70-73,共4页Electric Welding Machine

基　　金：国家科技重大专项资助项目(2009ZX04014-072)

摘　　要：分析了马氏体超高强钢的焊接性,制定一套包含焊接电流、回火电流、焊接压力、锻压力的点焊工艺规范,并采用中频、电伺服点焊设备进行焊接。结果表明,中频、伺服焊接系统可精确控制焊接电流和压力,适用于超高强马氏体钢铁的焊接;采用制定点焊规范进行焊接,飞溅少,焊核尺寸满足要求,焊核内部缩孔缺陷少,热影响区软化带较小。Based on a brief analysis of the weldability of martensitie ultra-high strength steel, a set of spot welding procedure including welding current ,tempering current,welding pressure and forging force was established.Then,intermediate frequency inverter ＆ electric servo welding gun system was used to welding the martensitic ultra-high strength steel.The results show that intermediate frequency inverter ＆ servo spot welding gun system can control electrode pressure and pressure precisely which is suitable for ultra-high strength martensitic steel welding.A joint with proper weld nugget size,less shrinkage and a smaller heat-affected softening zone can be obtained in less spatter welding process using the established procedure.

关 键 词：超高强钢 中频逆变电源 电伺服焊枪 

分 类 号：TG457.11[金属学及工艺—焊接]