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Effects of Welding Procedures on Resistance Projection Welding of Nuts to Sheets

机译:焊接工艺对螺母到薄板的阻力凸焊的影响

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摘要

In this study, experiments were conducted to investigate the effects of welding current, welding time, electrode force and types of nuts on resistance projection welding of nuts to sheets. The microstructures and welded joint size of welded joints in different welding procedures have been analyzed. The failure mode of welded joints was also discussed. It is found the microhardness distribution of the fusion zone gradually becomes homogeneous with the increase of the welding current or the welding time. Lower electrode force causes the occurrence of splash and large fluctuations of the microhardness in fusion zone. Different types of nuts lead to different heat distribution in the projection welding process. The welded joint in nut is deeper than that in base metal for welding nut with higher electrical resistivity. Button pull fracture, partial thickness fracture and interfacial fracture are the three failure modes of nut projection welded joints. The interfacial fracture is brittle rupture and the partial thickness fracture is ductile rupture.
机译:在这项研究中,进行了实验以研究焊接电流,焊接时间,电极力和螺母类型对螺母到板的电阻凸焊的影响。分析了不同焊接工艺中焊接接头的显微组织和焊接接头尺寸。还讨论了焊接接头的失效模式。发现随着焊接电流或焊接时间的增加,熔合区的显微硬度分布逐渐趋于均匀。较低的电极力会导致飞溅的发生和熔合区显微硬度的较大波动。在凸焊过程中,不同类型的螺母会导致不同的热量分布。螺母中的焊接接头比母材中的焊接接头更深,用于焊接具有更高电阻率的螺母。纽扣拉拔断裂,局部厚度断裂和界面断裂是螺母凸出焊接接头的三种破坏模式。界面断裂为脆性断裂,部分厚度断裂为延性断裂。

著录项

  • 来源
    《ISIJ international》 |2017年第12期|2194-2200|共7页
  • 作者

    Xiaopei WANG; Yongqiang ZHANG;

  • 作者单位

    Shougang Research Institute of Technology, Beijing, 100043 China,Beijing Key Laboratory of Green Recyclable Process for Iron & Steel Production Technology, Beijing, 100043 China;

    Shougang Research Institute of Technology, Beijing, 100043 China,Beijing Key Laboratory of Green Recyclable Process for Iron & Steel Production Technology, Beijing, 100043 China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    projection welding; nuts; weld quality; welding procedures; fracture mode;

    机译:凸焊;坚果焊接质量焊接程序;断裂模式;
  • 入库时间 2022-08-17 23:58:01

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