摘要
摘要文中系统分析了GH163高温合金电阻缝焊的结合线伸入对接头力学性能的影响。结果表明:焊接工艺对结合线伸入具有较大影响,结合线伸入程度随着电极压力、焊接电流和通电时间的增加而增加,随着焊接速度的增加而减小;结合线附近的显微硬度可达394.4 HV,高于母材及熔核的显微硬度,说明氧化物夹杂物是形成结合线伸入的主要原因;GH163电阻焊接接头的拉剪强度在1657.12～2010.56 MPa之间,合适工艺范围内试样均在母材破坏,表明接头在承受非动载荷时允许一定程度的结合线伸入。
The effects of junction line entering on mechanical properties of resistance welded joints were analyzed with GH163 high temperature alloy.The results indicated that welding parameters have great influence on the length of junction line entering.The length of junction line increases with increases of electrode pressure and welding current,and decreases with increase welding velocity.Microhardness around junction line reaches 394.4 HV,which is higher than the base metal and nugget.The tensile-shearing strength of GH163 resistance welded joint is 1657.12- 2010.56 MPa,and the fracture happens at base metal,which indicates that the joint permitted a certain junction line entering at the static loads.
出处
《焊接》
北大核心
2011年第7期46-49,74,共4页
Welding & Joining
关键词
电阻焊
结合线伸入
性能
resistance welding
junction line entering
mechanical properties
