TIG重熔技术对低地板客车轴桥接头疲劳性能的影响  

Effect of TIG Remelting Technology on Fatigue PerformAnce of Axle-Bridge Joints of Low-Floor Passenger Cars

作　　者：张敏[1,2] 王文先[1] ZHANG Min;WANG Wen-xian(College of Materials Science and Engineering,Taiyuan University of Technology,Taiyuan 030024,China;Physical and Chemical Verification Center,Taiyuan Heavy Industry Co.,Ltd.,Taiyuan 030024,China)

机构地区：[1]太原理工大学材料科学与工程学院,山西太原030024 [2]太原重工股份有限公司理化检定中心,山西太原030024

出　　处：《机械工程与自动化》2021年第1期143-145,148,共4页Mechanical Engineering & Automation

摘　　要：分别对焊态和TIG重熔后的低地板客车轴桥接头的红外热成像疲劳试验数据进行了研究,并结合金相分析、断口SEM分析及显微硬度测试,得出了通过对焊趾处有限深度的TIG重熔,可以显著提高接头疲劳性能。The infrared thermal imaging fatigue test data of as welded and TIG remelted axle bridge joints of low floor passenger cars were studied.Combined with metallographic analysis,fracture SEM analysis and microhardness test,it is concluded that TIG remelting with limited depth at the weld toe can significantly improve the fatigue performance of the joint.

关 键 词：低地板客车轴桥 疲劳性能 TIG重熔技术 

分 类 号：TG44[金属学及工艺—焊接] TG115.21[金属学及工艺—物理冶金]