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外加磁场对薄壁零件堆焊层形貌的影响

刘海华,卓义民,李亮玉,岳建锋

刘海华,卓义民,李亮玉,岳建锋. 外加磁场对薄壁零件堆焊层形貌的影响[J]. 焊接学报, 2018, 39(5): 47-50. DOI: 10.12073/j.hjxb.2018390120
引用本文: 刘海华,卓义民,李亮玉,岳建锋. 外加磁场对薄壁零件堆焊层形貌的影响[J]. 焊接学报, 2018, 39(5): 47-50. DOI: 10.12073/j.hjxb.2018390120
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LIU Haihua, ZHUO Yimin, LI Liangyu, YUE Jianfeng. Effect of magnetic field on the welding cladding morphology of thin walled parts[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2018, 39(5): 47-50. DOI: 10.12073/j.hjxb.2018390120
Citation: LIU Haihua, ZHUO Yimin, LI Liangyu, YUE Jianfeng. Effect of magnetic field on the welding cladding morphology of thin walled parts[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2018, 39(5): 47-50. DOI: 10.12073/j.hjxb.2018390120
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外加磁场对薄壁零件堆焊层形貌的影响

Effect of magnetic field on the welding cladding morphology of thin walled parts

摘要

    摘要
  • 摘要: 针对薄壁零件在微束等离子堆焊过程中两侧的液态金属下淌导致成形不好的问题，开展薄壁零件在堆焊过程中熔池力学行为分析和熔池成形的控制策略研究. 提出了外加磁场的方法，向熔池施加指向内侧的电磁力，对向下流淌的液态金属进行干预，从而抑制液态金属的流淌. 采用有限元软件COMSOL对工件上产生的电磁场、涡流场及附加电磁力进行仿真分析. 在304不锈钢上开展单道多层堆焊试验，获得了不同磁感应强度下的堆焊层形貌. 结果表明，外加磁场能明显改变微束等离子焊的力学行为和成形规律，并能有效抑制边沿液态金属流淌.
    Abstract: For the problem of poor forming in the process of microbeam plasma welding caused by the downward flow of molten metal on both sides of thin-wall parts, the analysis of molten pool mechanical behavior and the research of pool forming control strategy are studied. The method of the external magnetic field is proposed for adding the inside of the electromagnetic pressure to the molten pool, intervening the downward flowing molten metal. The finite element software COMSOL is used to simulate the magnetic flux density, the induced current density and the electromagnetic force on the workpiece. Experiments of single-channel multi-layer welding are performed on 304 stainless steel, and the welding cladding morphology under different magnetic flux density was obtained. The results show that the magnetic field can significantly change the mechanical behavior and forming rules on the microbeam plasma welding, and can effectively restrain the flow of molten metal on the edge.
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  • [1] 朱刚贤, 张安峰, 李涤尘, 等. 激光金属制造薄壁零件z轴单层行程模型[J]. 焊接学报, 2010, 31(8): 57-60.Zhu Gangxian, Zhang Anfeng, Li Dichen,et al. Model of layer thickness of thin-walled parts in laser metal direct manufacturing[J]. Transactions of the China Welding Institution, 2010, 31(8): 57-60.[2] Bachmann M, Avilov V, Gumenyuk A,et al. Experimental and numerical investigation of an electromagnetic weld pool support system for high power laser beam welding of austenitic stainless steel[J]. Journal of Materials Processing Technology, 2014, 214(3): 578-591.[3] 王 林, 武传松, 杨丰兆, 等. 外加磁场对高速GMAW电弧和熔池行为的主动调控效应[J]. 机械工程学报, 2016(2): 1-6.Wang Lin, Wu Chuansong, Yang Fengzhao,et al. Proactive control effect of arc and weld pool behaviors by an external magnetic field in high speed GMAW[J]. Chinese Journal of Mechanical Engineering, 2016(2): 1-6.[4] 常云龙, 路 林, 李英民, 等. 磁控TIG高速焊焊缝成形机理[J]. 焊接学报, 2013, 34(6): 1-4.Chang Yunlong, Lu Lin, Li Yingmin,et al. Mechanism of weld formation during high speed TIG welding with external magnetic fields[J]. Transactions of the China Welding Institution, 2013, 34(6): 1-4.[5] 华爱兵, 殷树言, 陈树君, 等. 纵向磁场对MAG焊电弧及熔滴过渡的控制作用[J]. 机械工程学报, 2010(14): 95-100.Hua Aibing, Yin Shuyan, Chen Shujun,et al. Behavior of arc and drop transfer of MAG welding controlled by longitudinal magnetic field[J]. Chinese Journal of Mechanical Engineering, 2010(14): 95-100.[6] 刘政军, 王晓慧, 苏允海. 外加磁场对镁合金焊接熔池形态的影响[J]. 焊接学报, 2016, 37(1): 103-106.Liu Zhengjun, Wang Xiaohui, Su Yunhai,et al. Effect of magnetic field on shape of magnesium alloy weld pool [J]. Transactions of the China Welding Institution, 2016, 37(1): 103-106.[7] 武传松. 焊接热过程与熔池形态[M]. 北京： 机械工业出版社, 2007.
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  • 收稿日期:  2016-11-21

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