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外加磁场对非等厚铝合金电阻点焊熔核偏移的影响

颜福裕, 李洋, 罗震, 谈辉, 罗彤

颜福裕, 李洋, 罗震, 谈辉, 罗彤. 外加磁场对非等厚铝合金电阻点焊熔核偏移的影响[J]. 焊接学报, 2016, 37(2): 67-70.
引用本文: 颜福裕, 李洋, 罗震, 谈辉, 罗彤. 外加磁场对非等厚铝合金电阻点焊熔核偏移的影响[J]. 焊接学报, 2016, 37(2): 67-70.
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YAN Fuyu, LI Yang, LUO Zhen, TAN Hui, LUO Tong. Effect of external magnetic field on nugget shift of aluminum alloy resistance spot weld with unequal thickness[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2016, 37(2): 67-70.
Citation: YAN Fuyu, LI Yang, LUO Zhen, TAN Hui, LUO Tong. Effect of external magnetic field on nugget shift of aluminum alloy resistance spot weld with unequal thickness[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2016, 37(2): 67-70.
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外加磁场对非等厚铝合金电阻点焊熔核偏移的影响

  • 1.

    天津大学 材料科学与工程学院, 天津 300072;高新船舶与深海开发装备协同创新中心, 上海 200240

  • 2.

    大庆油田责任有限公司 天然气分公司检测中心, 大庆 163000

基金项目: 国家自然科学基金资助项目(50975197,51275342)

Effect of external magnetic field on nugget shift of aluminum alloy resistance spot weld with unequal thickness

  • 1.

    School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China;Tianjin Key Laboratory of Advanced Joining Technology, Tianjin University, Tianjin 300072, China

  • 2.

    Testing Center of Natural Gas Branch Company of Daqing Oilfield, Daqing 163000, China

摘要

    摘要
  • 摘要: 针对两层板及三层板组合下的5052铝合金进行了外加磁场与常规情况下的电阻点焊,研究了外加磁场对铝合金点焊熔核偏移影响. 结果表明,外加磁场改善了两层板及三层板非等厚度铝合金的熔核偏移情况,尤其是针对熔核偏移较严重的板材厚度组合下,外加磁场改善熔核偏移的作用更加明显. 之后针对外加磁场和常规点焊情况的不同两层及三层板铝合金板厚组合式样进行了剪切拉伸测试. 结果表明,外加磁场在改善点焊熔核偏移的同时,提高了点焊接头的强度. 因此,外加磁场是一种改善非等厚度铝合金点焊熔核偏移及提高接头剪切拉伸性能的有效方法.
    Abstract: Resistance spot welding (RSW) of two-layer and three-layer aluminum alloy sheets was conducted under external magnetic field (EMF), and the effect of external magnetic field (EMF) on the nugget shift was investigated. The results show that the EMF improved the nugget shift of aluminum alloy resistance spot weld with unequal thickness. The effect of EMF became more obvious in the case of thickness combination in which the nugget shift was more serious. Tensile shear test was performed to investigate the joint strength with and without EMF. The results show that the EMF could improve the joint strength and meanwhile alleviate the nugget shift. Accordingly, the external magnetic field is an effective method to improve the joint strength and reduce the nugget shift of aluminum alloy resistance spot weld with unequal thickness.
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    • 参考文献(8)
  • [1] 黄焕林. 三层板点焊工艺参数优化的研究与应用[D]. 上海:上海交通大学, 2009.
    [2] 沈洁, 林浩磊, 张延松, 等. 差强差厚三层板电阻点焊熔核尺寸的控制方法[J]. 焊接学报, 2012, 33(1):33-36. Shen Jie, Lin Haolei, Zhang Yansong, et al. Control method for nugget size of different strength and different thickness resistance spot welding[J]. Transactions of the China Welding Institution, 2012, 33(1):33-36.
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    [4] 江淑园, 郑晓芳, 陈焕明, 等. 外加磁场对CO2焊飞溅的控制机理[J]. 焊接学报, 2004, 25(2):65-67. Jiang Shuyuan, Zheng Xiaofang, Chen Huanming, et al. Outside magnetic field control to spatter of CO2 arc welding[J]. Transactions of the China Welding Institution, 2004, 25(3):65-67.
    [5] Watanabe Y, Takeda T, Sato H. Effect of magnetic field on weld zone by spot-welding in stainless steel[J]. ISIJ International, 2006, 46(9):1292-1296.
    [6] 沈琦, 李永兵, 陈关龙, 等. 永磁体磁场对双相高强钢电阻点焊质量的影响[J]. 焊接学报, 2011, 32(4):21-24. Shen Qi, Li Yongbing, Chen Guanlong, et al. Impact of external magnetic field generated by permanent magnet on quality of dual phase high strength steel by resistance spot welding[J]. Transactions of the China Welding Institution, 2011, 32(4):21-24.
    [7] Li Y B, Shen Q, Lin Z Q, et al. Quality improvement in resistance spot weld of advanced high strength steel using external magnetic field[J]. Science and Technology of Welding and Joining, 2011, 16(5):465-469.
    [8] Yang Li, Zhen Luo, Fuyu Yan, et al. Effect of external magnetic field on resistance spot welds of aluminum alloy[J]. Materials and Design, 2014, 56:1025-1033.
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  • 收稿日期:  2014-05-27

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