摘要
从接头的拉剪力、熔核的微观组织、动态电阻曲线和焊接性范围4个方面,对比分析双相钢透胶胶焊和电阻点焊的接头性能.结果表明,胶焊熔核开始形成时间提前于点焊,使得在小电流情况下胶焊的焊点拉剪力要普遍高于点焊;胶焊在中等电流情况下便会产生严重飞溅,使得在大电流情况下点焊焊点拉剪力要更高些.因此,在制定胶焊的焊接工艺参数时应选择比电阻点焊偏低的焊接电流,而适度增加焊接过程的电极力有利于抑制飞溅产生.
The joint performances between weld-bonding and resistance spot welding(RSW) are compared by tensile-shear force of nuggets,microstructure of nuggets,dynamic resistance curves and weld lobes.Experimental results show that the tensile-shear force of weld-bonded nuggets is much higher than that of spot-welded nuggets when lower welding current is used;oppositely tensile-shear force of spot-welded nuggets is a little higher than that of weld-bonded nuggets when higher welding current is used,but severe spatter will occur.Therefore,lower welding current in weld-bonding of steel comparing with that of RSW and larger electrode force during welding will inhibit spatter.
出处
《焊接学报》
EI
CAS
CSCD
北大核心
2009年第10期17-20,共4页
Transactions of The China Welding Institution
基金
国家自然科学基金资助项目(S0905111)
关键词
胶焊
电阻点焊
双相钢
接头性能
weld-bonding
resistance spot welding
dual-phase steel
joint performance
