中国机械工程

• 先进材料加工工程 • 上一篇    下一篇

不锈钢单侧磁控电阻点焊工艺研究

徐野1;祁麟2,3;韩晓辉1;叶结和1;李永兵2,3   

  1. 1.中车青岛四方机车车辆股份有限公司,青岛,266111
    2.上海交通大学机械系统与振动国家重点实验室,上海,200240
    3.上海交通大学上海市复杂薄板结构数字化制造重点实验室,上海,200240
  • 出版日期:2019-04-10 发布日期:2019-04-04
  • 基金资助:
    国家自然科学基金-汽车产业联合基金资助重点项目(U1564204)

Research on Single-side Magnetic Assisted Resistance Spot Welding Process of Stainless Steel

XU Ye1;QI Lin2,3;HAN Xiaohui1;YE Jiehe1;LI Yongbing2,3   

  1. 1.CRRC Qingdao Sifang Co.,Ltd.,Qingdao,Shandong,266111
    2.State Key Laboratory of Mechanical System and Vibration,Shanghai Jiao Tong University,Shanghai,200240
    3.Shanghai Key Laboratory of Digital Manufacture for Thin-walled Structures,Shanghai Jiao Tong University,Shanghai,200240
  • Online:2019-04-10 Published:2019-04-04

摘要: 为提高单侧焊接接头的质量,减少焊接缺陷,基于传统双侧轴向磁化装置,设计了一种适用于单侧电阻点焊设备的单侧径向充磁磁控装置。通过与传统电阻点焊进行对比性实验,研究了传统焊点与单侧磁控焊点随焊接电流的变化规律,揭示了单侧磁控电阻点焊装置对焊点熔核形貌、熔核尺寸、微观组织、力学性能等方面的作用机制及改善效果,验证了单侧磁控电阻点焊工艺的可行性。

关键词: 磁控电阻点焊, 不锈钢, 径向充磁, 单侧电阻点焊

Abstract: In order to improve the single-side welding joint quality and reduce the welding defects, a single-side radial magnetizing device for single-side resistance spot welding equipment was designed based on the traditional double-side axial magnetizing device. Compared with the traditional resistance spot welding ,the variations of traditional resistance spot welding joints and magnetic assisted resistance welding joints with welding current were studied. The mechanism and effectivenesses of single-side magnetic assisted resistance spot welding on nugget morphology, nugget size, microstructure and mechanical properties were revealed ,and the feasibility of single-side magnetic assisted resistance spot welding process was verified.

Key words: magnetic assisted resistance spot welding, stainless steel, axial magnetizing, single-sided resistance spot welding

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