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首页> 外文期刊>Journal of Laser Applications >Evaluation criterion and closed-loop control of penetration status during laser-MIG hybrid welding
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Evaluation criterion and closed-loop control of penetration status during laser-MIG hybrid welding

机译：激光-MIG混合焊接过程中熔深状态的评估准则和闭环控制

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摘要

Laser-MIG hybrid welding is an advanced joining process and is widely applied in various industries. It is important to make sure the plate is fully penetrated with an appropriate weld formation in practical applications. In this paper, 3 kW CO_2 laser and pulse MIG machine were used to compose the laser-MIG hybrid welding equipment to make butt weld of stainless steel plates. The penetration status was divided into three types: partial penetration, moderate full penetration, and excessive penetration. The effect of welding parameter and gap width on penetration status was investigated experimentally. The weld root width was detected by real-time vision sensor system and proposed as the criterion for evaluating penetration status in CO_2 laser-MIG hybrid welding. The closed-loop control system was established with vision sensor and digital signal processor. Consequently, the weld with consistent "moderate full penetration" was acquired in laser-MIG hybrid butt welding with great variation of gap width by autoadjusting the welding speed or welding current.
机译：激光-MIG混合焊接是一种先进的焊接工艺，已广泛应用于各个行业。在实际应用中，重要的是要确保板以适当的焊接形式完全渗透。本文采用3 kW CO_2激光脉冲MIG焊接机组成了激光-MIG混合焊接设备，对不锈钢板进行对接焊接。渗透状态分为三种类型：部分渗透，中等完全渗透和过度渗透。实验研究了焊接参数和缝隙宽度对熔深状态的影响。通过实时视觉传感器系统检测焊缝根部宽度，并将其作为评估CO_2激光-MIG混合焊接熔深状态的标准。建立了具有视觉传感器和数字信号处理器的闭环控制系统。因此，通过自动调节焊接速度或焊接电流，在激光-MIG混合对接焊中，间隙宽度有很大变化，从而获得了一致的“中等全熔深”焊缝。

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  • 来源
    《Journal of Laser Applications》 |2010年第3期|p.92-98|共7页
  • 作者

    Yongqiang Zhang; Peng Wen; Jiguo Shan; Yuanqing Shuang; Wuzhu Chen;

  • 作者单位

    Shougang Research Institute of Technology, Beijing 100043, Peoples Republic of China;

    rnDepartment of Mechanical Engineering, Tsinghua University Beijing 100084, Peoples Republic of China;

    rnDepartment of Mechanical Engineering, Tsinghua University Beijing 100084, Peoples Republic of China;

    rnDepartment of Mechanical Engineering, Tsinghua University Beijing 100084, Peoples Republic of China;

    rnDepartment of Mechanical Engineering, Tsinghua University Beijing 100084, Peoples Republic of China;

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