2 mm厚1000 MPa级双相钢板电阻点焊工艺参数的优化
Optimization of Resistance Spot Welding Parameters of 1000 MPa Grade Dual-Phase Steel Plate wsth Thickness of 2 mm
摘 要
对2mm 厚国产汽车用1000MPa级双相钢板进行了不同工艺条件的电阻点焊, 对各点焊接头显微组织、力学性能以及断口形貌等进行了分析, 在此基础上优化了工艺参数。结果表明:在试验条件下, 最佳点焊工艺参数为焊接电流12kA, 焊接时间12周波(0.24s), 焊接压力3.5kN;此条件下焊接接头的断裂方式以韧性断裂为主。
电阻点焊
工艺参数
dual-phase steel
resistance spot welding
technology parameter
Abstract
It was carried out that the resistance spot welding process with different conditions of the domestic 1000 MPa grade dual-phase steel plate with thickness of 2 mm for automotive. The microstructure, mechanical properties of the weld seam and the fracture morphology were analyzed. The process parameters were optimized. The results show that the optimum welding process under the experimental conditions was obtained, which was welding current of 12 kA, welding time of 12cyc (0.24 s) and welding pressure of 3.5 kN. And the fracture mode of the weld seam was mainductile fracture.
中图分类号 TG146.1
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收稿日期 2010/6/18
修改稿日期 2011/2/25
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作者单位点击查看
备注于燕(1968-), 女, 吉林长春人, 教授, 博士。
引用该论文: YU Yan,CHEN Jun,WANG Min,WANG Feng-xue. Optimization of Resistance Spot Welding Parameters of 1000 MPa Grade Dual-Phase Steel Plate wsth Thickness of 2 mm[J]. Materials for mechancial engineering, 2011, 35(8): 12～15
于燕,陈军,王敏,王凤雪. 2 mm厚1000 MPa级双相钢板电阻点焊工艺参数的优化[J]. 机械工程材料, 2011, 35(8): 12～15
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参考文献
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【3】SHI G, WESTGATE S A. Resistance spot welding of high strength steels[J]. International Journal for the Joining of Materials, 2004, 16(1):9-14.
【4】AGASHE S, ZHANG H. Selection of schedules based on heat balance in resistance spot welding[J]. Welding Journal, 2003, 82(7):179-183.
【5】HILDITCH T B, SPEER J G, MATLOCK D K. Effect of susceptibility to interfacial fracture on fatigue properties of spot-welded high strength sheet steel[J]. Materials and Design, 2007, 28(10):2566-2576.
【2】MARYA M, GAYDEN X Q. Development of requirements for resistance spot welding dual-phase (DP600) steels. Part 1: the causes of interfacial fracture[J]. Welding Journal, 2005, 84(11):172-182.
【3】SHI G, WESTGATE S A. Resistance spot welding of high strength steels[J]. International Journal for the Joining of Materials, 2004, 16(1):9-14.
【4】AGASHE S, ZHANG H. Selection of schedules based on heat balance in resistance spot welding[J]. Welding Journal, 2003, 82(7):179-183.
【5】HILDITCH T B, SPEER J G, MATLOCK D K. Effect of susceptibility to interfacial fracture on fatigue properties of spot-welded high strength sheet steel[J]. Materials and Design, 2007, 28(10):2566-2576.
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