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CO2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,CO2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。
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 CO2 gas shielded flux cored wire transverse welding.The continuous welding method is used for filling layer and covering layer to ensure the weld quality.
作者
刘德文
刘家乐
刘晓莉
杨宗义
LIU Dewen;LIU Jiale;LIU Xiaoli;YANG Zongyi(Chongqing Shi Jiang Nan Vocational School,Chongqing 402223,China;Guangxi Beihai University of Art and Design,Beihai 536000,China)
出处
《电焊机》
2020年第11期139-141,I0009,共4页
Electric Welding Machine
基金
重庆市教育科学“十三五”规划2019年重点课题(2019-00-214)。
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
CO2 gas shielded welding
flux cored wire
transverse welding
weld inspection
standardized skill training
