汽车用钢板电阻点焊工艺参数优化选择  

Resistance spot welding parameters optimal selection for automotive steel plate

作　　者：唐科 梁翠 黄微晏 黄靖 TANG Ke;LIANG Cui;HUANG Weiyan;HUANG Jing(SAIC-GM-Wuling Automobile Co., Ltd., Chongqing Branch, Chongqing 401120, China)

机构地区：[1]上汽通用五菱汽车股份有限公司重庆分公司,重庆401120

出　　处：《电焊机》2017年第11期111-116,共6页Electric Welding Machine

摘　　要：焊装车间多采用多层板搭接进行电阻电焊,而电阻电焊过程的不确定性因素较多。为了用较少的试验次数得到满足生产要求的试验结果,以板厚0.8 mm+1.4 mm+1.8 mm的三层低碳钢板搭接为研究对象,分析各因素对多层板材搭接焊点熔核质量的影响,获得了最优焊接工艺参数。试验结果表明:板厚为0.8 mm+1.4 mm+1.8 mm的三层低碳钢板搭接最佳焊接工艺参数为多脉冲软规范焊接参数,即三周波,焊接电流8.8/11.1/9.6 k A、焊接时间5/19/5 cyc、电极压力3 k N,得到各层搭接板之间熔核直径大于等于φ6 mm。In welding workshop, multi plate lapping is used to resistance welding usually, but so many uncertainty factors are therein welding process. In order to use less test times to meet production requirements and solve the welding nugget problem of multil-ayered panel lap, the optimizing welding parameter for 3 layer of low carbon steel plate with thickness of 0.8 mm＋1.4 mm＋1.8 mmwas found in this paper. Experimental results show that： the welding current 9.6/8.8/11.1 kA, welding time 5/19/5 cycle, electrodepressure3 kN is suitable for 3 layer of low carbon steel plate with thickness of 0.8 mm＋1.4 mm＋1.8 mm, multiple-pulse weldingparameter is appropriate for multilayered panel lap, and diameter of nugget on each layer can achieve 6 mm.

关 键 词：电阻点焊 焊接工艺参数 熔核尺寸 焊接质量 

分 类 号：TG115.6[金属学及工艺—物理冶金]