Study on MAG welding technology of J-shaped groove weld

LIANG Shubo; DONG Ming

doi:10.7512/j.issn.1001-2303.2020.03.24

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Study on MAG welding technology of J-shaped groove weld
Vol. 50, Issue 3, Pages: 131-132(2020)
Published：2020
DOI： 10.7512/j.issn.1001-2303.2020.03.24
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DOI：

LIANG Shubo, DONG Ming. Study on MAG welding technology of J-shaped groove weld[J]. Eletric Welding Machine2020, 50(3): 131-132. DOI： 10.7512/j.issn.1001-2303.2020.03.24.

摘要

J型坡口是轨道客车转向架焊缝常用坡口形式之一

Q345钢为转向架用主要材料。针对Q345钢的J型坡口焊缝分别进行手工、自动、复合三种方法的MAG焊工艺性研究。通过对接头的宏观金相、硬度检测的试验结果进行对比发现

复合MAG焊生产效率高于手工MAG焊

焊缝质量优于自动MAG焊

是能较好满足企业批量安全生产基本要求的工艺方法。

Abstract

J-shaped groove is one of the commonly used groove forms in the weld of railway vehicle bogies. Q345 steel is one of the materials used in the railway vehicle bogies. For the J-shaped groove weld of Q345 steel

the technological research on the three methods of manual

automatic and hybrid MAG welding is studied. By comparing the test results of the macroscopic metallurgy and hardness of the welded joints

it shows that the hybrid MAG welding is more efficient than the manual MAG welding

and the weld quality of hybrid MAG welding is better than that of automatic MAG welding. So hybrid MAG welding is the most suitable procedure for meeting the basic requirements of batch safety production.