汽车用TRIP600高强钢板的点焊工艺
Resistance Spot Welding Technology for TRIP600 High Strength Steel Plate for Vehicles
摘 要
对汽车用1.5 mm厚 TRIP600高强钢板进行了系列电阻点焊试验, 对其显微组织及其力学性能进行了研究。结果表明: TRIP600高强钢板的最佳焊接电流为7.1 kA、电极压力为4 410 N、焊接时间为0.06 s; 焊接电流和焊接时间对接头性能的影响较为显著, 适当地提高焊接电流、延长焊接通电时间都能有效提高接头强度; 焊接接头的剪切断裂主要发生在热影响区, 属于脆性断裂。
电阻点焊
剪切断裂
TRIP600 steel
resistance spot welding
shear fracture
Abstract
A series of resistance spot welding tests for TRIP600 high strength steel plate for vehicles with a thickness of 1.5 mm were carried out. The microstructure and mechanical properties of the plate were analyzed. The results show that the best welding process for TRIP600 high strength steel plate was given when relevant spot was 7.1 kA, electrode pressure was 4 410 N and welding time was 0.06 s. Both welding current and welding time had remarkable effects on the properties of welded joint. Increase of welding current and extension of welding time could effectively enhance the strength of welded joint. Shear fracture mainly occurred in the heat affected zone of welded joint, and was brittle.
中图分类号 TB303
所属栏目 材料性能及其应用
基金项目
收稿日期 2012/7/12
修改稿日期 2013/5/16
网络出版日期
作者单位点击查看
备注于燕(1962-), 女, 辽宁金县人, 教授, 博士。
引用该论文: YU Yan,ZHANG Xiao-meng,YHANG Hai-feng,LIU Zhen. Resistance Spot Welding Technology for TRIP600 High Strength Steel Plate for Vehicles[J]. Materials for mechancial engineering, 2013, 37(8): 68～71
于燕,张小盟,杨海峰,刘臻. 汽车用TRIP600高强钢板的点焊工艺[J]. 机械工程材料, 2013, 37(8): 68～71
被引情况:
【1】张建,吴青松,郑江鹏,黄治军, "DP780双相钢电阻点焊接头的显微组织和力学性能",机械工程材料 39, 29-31(2015)
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参考文献
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【2】COOMAN DE B C. Investigation on precipitation transition in CGHAZ for TRIP steels containing vanadium and titanium[J].Journal of Iron and Steel Research, 2011, 18: 154-158
【3】张迎晖, 赵鸿金, 康永林.相变诱导塑性TRIP钢的研究进展[J].热加工工艺: 热处理版, 2006, 35(6): 60-61.
【4】于燕, 宋丽丽, 杨海瑞, 等.中重型卡车桥壳用390Q高强度钢的焊接性能[J].机械工程材料, 2008, 32(8): 53-55.
【5】李壮, 王铁利, 曹仁焕, 等.硅、锰合金元素含量对TRIP结构钢力学性能的影响[J].东北大学学报: 自然科学版, 1999, 20(3): 303-306.
【6】HILDITCH T B, SPEER J G.Effect of susceptibility to interfacial fracture on fatigue properties of spot-welded high strength sheet steel[J].Materials and Design, 2007, 25: 2566-2576.
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