Relationship between transverse welding parameters and weld quality of flux cored wire in college skills competition

LIU Dewen; LIU Jiale; LIU Xiaoli; YANG Zongyi

doi:10.7512/j.issn.1001-2303.2020.11.26

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Relationship between transverse welding parameters and weld quality of flux cored wire in college skills competition
Vol. 50, Issue 11, Pages: 139-141(2020)
DOI： 10.7512/j.issn.1001-2303.2020.11.26

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LIU Dewen, LIU Jiale, LIU Xiaoli, et al. Relationship between transverse welding parameters and weld quality of flux cored wire in college skills competition. [J]. 50(11):139-141(2020)
DOI：

LIU Dewen, LIU Jiale, LIU Xiaoli, et al. Relationship between transverse welding parameters and weld quality of flux cored wire in college skills competition. [J]. 50(11):139-141(2020) DOI： 10.7512/j.issn.1001-2303.2020.11.26.

摘要

针对材质Q235、厚度12 mm钢板的焊接过程,从焊前准备部分参数确定、焊接工艺参数、焊缝检测结果等方面展开CO,2,气体保护药芯焊丝横焊焊接参数对焊缝质量影响的探讨。对参加各级技能竞赛的焊接专业的学生进行标准化技能培训,并对比分析其技能训练效果。结果表明:焊接电流、电源极性、焊接方向、焊接手法是影响焊缝质量的关键因素,CO,2,气体保护药芯焊丝横焊首选右焊法、直流反接,打底层采用断弧焊,填充层、盖面层采用连弧焊,能够保证焊缝质量。

Abstract

For the welding process of Q235 steel plate with thickness of 12 mm,the influence of the welding parameters of flux cored wire transverse welding on the weld quality is discussed from the determination of some parameters before welding,welding parameters and weld detection results,etc.Standardized skill training was conducted for welding students who participated in skill competitions at all levels,and the comparison of skill training effect was analyzed. The results show that the welding current,power polarity,welding direction and welding technique are the key factors affecting the weld quality.The right welding method and direct current reverse welding method are preferred for CO,2, gas shielded flux cored wire transverse welding. The continuous welding method is used for filling layer and covering layer to ensure the weld quality.

关键词

CO2气体保护焊药芯焊丝横焊焊缝检测标准化技能培训

Keywords

CO2 gas shielded weldingflux cored wiretransverse weldingweld inspectionstandardized skill training

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