| 激光焊接时等离子体电流的产生及外加电磁场的作用 |
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| 引用本文： | 王成,彭云,包刚,陈武柱,田志凌. 激光焊接时等离子体电流的产生及外加电磁场的作用[J]. 激光杂志, 2002, 23(2): 64-65 |
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| 作者姓名： | 王成 彭云 包刚 陈武柱 田志凌 |
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| 作者单位： | [1]清华大学机械工程系，北京100084 [2]北京钢铁研究总院，北京100081 |
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| 基金项目： | 国家重点基础研究规划( 973)资助项目(G19980 6 150 0 )，清华大学985基金项目 (No .0 12 - 10 10 50 ) |
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| 摘 要： | 本文从等离子体吸收能量的理论入手，采用提升喷嘴的实验方法，系统研究了电磁场参数对等离子体控制的影响。研究结果表明，随磁场强度的加大，对等离子体的作用加强。而外加电压变化时，则存在一个最佳电压值，P＝1800W，V＝1m/min时，外加电压为25V时对等离子体作用最强。另外研究表明磁场正极性对等离子体有较明显的作用。
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| 关 键 词： | 激光焊接 等离子体 电流 电磁场 工艺参数 |
| 修稿时间： | 2001-05-04 |
Generation of plasma current and effect of auxiliary electromagnetic fields in CO2 laser beam welding |
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| Wang Cheng Peng Yun Bao Gang Chen Wuzhu Tian Zhiling. Generation of plasma current and effect of auxiliary electromagnetic fields in CO2 laser beam welding[J]. Laser Journal, 2002, 23(2): 64-65 |
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| Authors: | Wang Cheng Peng Yun Bao Gang Chen Wuzhu Tian Zhiling |
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| Affiliation: | Wang Cheng 1 Peng Yun 1 Bao Gang 1 Chen Wuzhu 1 Tian Zhiling 2 |
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| Abstract: | According to the theory that plasma absorbs laser energy and with the experiment method which elevates the nozzle during welding,the effect of magnetic field on plasma control is discussed.Experiment results show that effect of magnetic field on plasma is enhanced with increasing magnetic field intensity.There is an optimal voltage for the effect of magnetic field.In the case of 1800W Laser power and 1m/min welding speed,the optimal voltage is 25 volts.Experiment results also show that the effect of positive polarity magnetic field is more effective than that of negative polarity magnetic field. |
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| Keywords: | laser beam welding auxiliary electric and magnetic fields plasma control |
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