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激光增强GMAW熔滴短路过渡行为分析

贾亚洲,陈树君,肖珺,王立伟

贾亚洲,陈树君,肖珺,王立伟. 激光增强GMAW熔滴短路过渡行为分析[J]. 焊接学报, 2018, 39(7): 51-54. DOI: 10.12073/j.hjxb.2018390174
引用本文: 贾亚洲,陈树君,肖珺,王立伟. 激光增强GMAW熔滴短路过渡行为分析[J]. 焊接学报, 2018, 39(7): 51-54. DOI: 10.12073/j.hjxb.2018390174
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JIA Yazhou, CHEN Shujun, XIAO Jun, WANG Liwei. Laser enhanced short-circuiting metal transfer in GMAW[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2018, 39(7): 51-54. DOI: 10.12073/j.hjxb.2018390174
Citation: JIA Yazhou, CHEN Shujun, XIAO Jun, WANG Liwei. Laser enhanced short-circuiting metal transfer in GMAW[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2018, 39(7): 51-54. DOI: 10.12073/j.hjxb.2018390174
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激光增强GMAW熔滴短路过渡行为分析

  • 北京工业大学 汽车结构部件先进制造技术教育部工程研究中心, 北京 100124

基金项目: 国家自然科学基金青年基金项目（5150050906）；北京市自然科学基金资助项目（51575133）；国家自然科学基金面上项目（3162004）

Laser enhanced short-circuiting metal transfer in GMAW

  • College of Mechanical Engineering & Applied Electronics Technology Beijing University of Technology, Beijing 100124, China

摘要

    摘要
  • 摘要: 高能量密度的激光照射熔滴，使熔滴局部产生强烈蒸发，利用蒸发反力驱动熔滴受迫短路，促进熔滴脱离焊丝.以低碳钢为研究对象，搭建激光增强GMAW短路过渡焊接试验系统，对比研究了激光增强GMAW短路过渡焊接过程中激光入射位置、电弧高度对熔滴短路过渡行为的影响规律.结果表明，在焊接过程中施加一定功率的激光对熔滴短路过渡行为有明显的改善作用，可以通过激光改变熔滴的受力状态，控制过渡熔滴的尺寸，熔滴短路时间减小，燃弧时间增加，增加过渡频率，提高了焊接过程中的稳定性，激光增强后，焊缝表面成形均匀饱满，焊缝成形良好.
    Abstract: The high energy density of the laser beam irradiated the droplet to make it be subjected to local strong evaporation, and the laser recoil force was used to drive the droplet to be forced short circuit, which promoted the droplet to be detached from the wire. Taking the mild steel as the research object and using the high speed camera equipment, the laser enhanced GMAW short circuiting transfer welding test system was built. The influence of laser incident position and arc height on the transfer behavior of droplet short circuit in GMAW short circuiting transfer welding process were studied. The results show that the laser has a significant effect on the short circuiting transfer behavior of the droplet during the welding process. The force state of the droplet can be changed, which can control the size of the droplet. The droplet short circuiting time decreases, while the arcing time and transfer frequency increase, which improves the stability of the welding process. After the laser is applied, the metal transfer is much more frequent and robust. The bead formation looks fine and uniform.
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    • 参考文献(8)
  • [1] 常云龙, 刘晓龙, 路林, 等. 短路过渡2焊研究现状及展望[J]. 焊接技术, 2013(3):1-5. Chang Yunlong, Liu Xiaolong, Lu Lin, et al. Research status and prospect of short-circuiting CO_2 gas-shielded arc welding[J]. Welding Technology, 2013,03:1-5+5.[DOI: 10.3969/j.issn.1002-025X.2013.03.001]
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    [7] 肖珺. 基于脉冲激光与电弧力调控的GMAW熔滴过渡主动控制[D]. 哈尔滨:哈尔滨工业大学, 2014.
    [8] X. Chen, H. X. Wang. A calculation model for the evaporation recoil pressure in laser material processing[J]. Journal of Physics:Applied Physics. 2001, 34:2637-2642.
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  • 收稿日期:  2017-01-30

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