电焊机2023，Vol.53Issue(12)：76-80,5.DOI:10.7512/j.issn.1001-2303.2023.12.12
6082铝合金中厚板高频脉冲MIG对接焊工艺及接头的残余应力
Welding Procedure&Residual Stress of 6082 6082-T6 Aluminum Alloy Medium Plate Butt Welded Joint by High-frequency Pulse MIG Welding Process
张亚 1戴忠晨 1李东风 2曲宗庆 2刘宇阳 2王文超 2丁成钢 2冯寒3
作者信息
- 1. 中车南京浦镇车辆有限公司,江苏 南京 210031
- 2. 大连交通大学 材料科学与工程学院,辽宁 大连 116028
- 3. 鞍钢集团,辽宁 鞍山 114011
- 折叠
摘要
Abstract
In this paper,welding procerure test of 6082 aluminum alloy medium plate butt joint were done using high-frequency pulse MIG welding and conventional pulse MIG welding processes with a 1 mm gap,plate thickness 8 mm,and a groove angle of 50° and 60° respectively;The macroscopic morphology of welded joints(welding appearance)and the re-sidual stress at welding toe after welding were studied.The experimental results showed that welding appearance were better for two welding processes,compared with conventional pulse MIG welding process,high-frequency pulse MIG welding pro-cess possessed deeper penetration,wider fusion width,lower porosity sensitivity and welding residual stress.Compared with conventional pulse MIG welding process,when groove angle was 50°,at the same welding heat imput(10.7 kJ/cm),root fusion width increased about 20%by high-frequency pulse MIG welding process,about 16%when 60° groove angle.Transverse re-sidual stress(σy)at welding toe decreased about 18.5%when groove angle was 60° by high-frequency pulse MIG welding process,about 8.5%for longitudinal residual stress(σx).When groove angle was 50°,transverse residual stress(σy)at welding toe decreased about 18%,7%for longitudinal residual stress(σx)by high-frequency pulse MIG welding process.Decreased from 60° to 50° for groove angle,residual stress at welding toe decreased about 6%by high-frequency pulse MIG welding.关键词
6082-T6铝合金中厚板/高频脉冲MIG深熔焊/对接焊工艺,焊接残余应力/焊接气孔Key words
6082-T6 aluminum alloy medium plate/high frequency pulse MIG deep penetration welding/butt welding pro-cedure/welding residual stress/welding porosity分类
矿业与冶金引用本文复制引用
张亚,戴忠晨,李东风,曲宗庆,刘宇阳,王文超,丁成钢,冯寒..6082铝合金中厚板高频脉冲MIG对接焊工艺及接头的残余应力[J].电焊机,2023,53(12):76-80,5.
