工艺参数对载流搅拌摩擦点焊修复模具性能的影响分析  

Effect of process parameters on the properties of die repaired by electronic current aided friction stir spot welding

作　　者：赵辉[1] 王红霞[1] 

机构地区：[1]郑州职业技术学院,河南郑州450121

出　　处：《电焊机》2015年第2期44-48,共5页Electric Welding Machine

摘　　要：采用不同工艺参数进行H13钢热作模具的载流搅拌摩擦点焊修复,并进行显微组织、力学性能和耐磨损性能的检测与分析。结果表明,随搅拌头旋转速度、焊接电流、焊接时间的增大,修复后模具的力学性能和耐磨损性能均先增大后减小;与全新模具相比,修复后模具的抗拉强度、延伸率可增大27 MPa和2.1%,磨损体积减小37.9%。The H13 steel die was repaired by current aided friction stir spot welding with different process parameters,and the microstructure,mechanical properties and wear resistance were tested and analyzed.The results showed that the mechanical properties and wear resistance of the repaired die could first increase and then decrease with the increase of rotation speed,welding current and welding time,respectively.Compared with the new die,tensile strength and elongation of the repaired die could increase by 27 MPa and 2.1%,respectively,and wear resistance could decrease by 37.9%.

关 键 词：载流搅拌摩擦点焊 工艺参数 模具修复 力学性能 耐磨损性能 

分 类 号：TG453[金属学及工艺—焊接]