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中文摘要：
为进一步提高等离子体弧柔性成形的表面质量，利用磁场控制弧柱的摆动状态进而控制单位面积上等离子体弧的热流密度，使之达到预期目的。通过磁控等离子体弧柔性弯曲成形实验，研究了等离子体弧在交变磁场中的特性，分析了加入交变磁场对板材弯曲成形表面质量、弯曲成形速度的影响规律。研究结果表明，加入适当的交变磁场可明显改善成形件的质量。
英文摘要：
To improve the surface quality of flexible formation using plasma arc, its heat-flow density on unit area is controlled by controlling the swinging of the plasma arc with the alternate magnetic field. Through the experiment on flexible bending formation using plasma arc controlled by the alternate magnetic field, the paper studied the characteristics of the plasma arc in alternate magnetic fields, whose effects on the surface quality of sheet metal＇s bending formation and its bending formation speed were also analyzed. The study results indicate that the introduction of the proper alternate magnetic field can remarkably improve sheet metals＇ formation quality.
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