电焊机2018，Vol.48Issue(5)：31-33,3.DOI:10.7512/j.issn.1001-2303.2018.05.06
激光填丝焊碳钢车体不等厚对接接头疲劳性能
Fatigue properties of different thickness butt joints of carbon steel body with laser fillet welding
李洋 1郭丽娟 1刘东军 1田慧 1刘华伟1
作者信息
- 1. 中车唐山机车车辆有限公司制造技术中心,河北唐山063035
- 折叠
摘要
Abstract
Using 2.5 mm+4 mm carbon steel material and ER50-G welding wire to conduct laser filling wire welding test of unequal thickness butt joint.The fatigue properties and macroscopic and microscopic appearance of the unequal thickness butt joints are studied,and the fracture characteristics are analyzed.The results show that the fatigue value of the join is 237.7 MPa when the specified life cycle is 1×107.The fatigue fracture occurs at the welding toe on the side of the 2.5 mm plate.The fracture presents typical fatigue characteristics,and the fatigue lines are clear,and the fracture morphology of the transient area is a dimple of different sizes.This study provides a reliable technical support for laser fillet welding in the manufacture of carbon steel body.关键词
激光填丝焊/碳钢/疲劳性能/轨道车辆Key words
laser fillet welding/carbon steel/fatigue property/rail vehicle分类
矿业与冶金引用本文复制引用
李洋,郭丽娟,刘东军,田慧,刘华伟..激光填丝焊碳钢车体不等厚对接接头疲劳性能[J].电焊机,2018,48(5):31-33,3.
