电焊机2018，Vol.48Issue(1)：9-14,6.DOI:10.7512/j.issn.1001-2303.2018.01.03
轨道车辆用不锈钢等离子-MAG复合焊接头疲劳试验
Fatigue test of plasma-MAG hybrid welded joint of stainless steel for railway vehicle
田洪雷 1刘龙玺 1孙维光 1姚宇新 2朱平 2史春元2
作者信息
- 1. 中车青岛四方机车车辆股份有限公司,山东青岛266111
- 2. 大连交通大学,辽宁大连116028
- 折叠
摘要
Abstract
Plasma-MAG hybrid welding method and ordinary MAG welding method were used respectively to carry out the welding tests of SUS301L-MT stainless steel middle heavy plates for railway vehicles under the condition of ER308LSi welding wire and ψ (Ar)98％+ψ(CO2)2％ shield gas selected.The pulsating tensile fatigue test and the fatigue strength estimation were conducted on the butt welded joints and the cruciform joints of plasma-MAG hybrid welding and ordinary MAG welding respectively.The results indicate that the median fatigue strength in fatigue life of 2×106 cycle is 279 MPa and 160 MPa for the butt joint and the cruciform joint of plasma-MAG hybrid welding respectively.Compared with ordinary MAG welding,the fatigue strength of plasma-MAG hybrid welded joints increases,in which the fatigue strength of butt joint is higher than that of cruciform joint.关键词
轨道车辆/不锈钢/等离子-MAG复合焊/疲劳Key words
railway vehicle/stainless steel/plasma-MAG hybrid welding/fatigue分类
矿业与冶金引用本文复制引用
田洪雷,刘龙玺,孙维光,姚宇新,朱平,史春元..轨道车辆用不锈钢等离子-MAG复合焊接头疲劳试验[J].电焊机,2018,48(1):9-14,6.
