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徐达, 许威, 徐文立, 方洪渊. 电磁力随焊控制焊接应力装置的研制及应用[J]. 焊接学报, 2008, (1): 9-12.
引用本文: 徐达, 许威, 徐文立, 方洪渊. 电磁力随焊控制焊接应力装置的研制及应用[J]. 焊接学报, 2008, (1): 9-12.
XU Da, XU Wei, XU Wenli, FANG Hongyuan. Investigation and application of pulse electromagnetic force generator for trailing control of welding stress[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2008, (1): 9-12.
Citation: XU Da, XU Wei, XU Wenli, FANG Hongyuan. Investigation and application of pulse electromagnetic force generator for trailing control of welding stress[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2008, (1): 9-12.

电磁力随焊控制焊接应力装置的研制及应用

Investigation and application of pulse electromagnetic force generator for trailing control of welding stress

  • 摘要: 高强合金薄壁结构焊接时,存在变形大,热裂敏感性高的问题。针对这一问题,研制了一套脉冲电磁力装置,以实现借助脉冲电磁力无接触随焊控制焊接应力。该装置通过控制储能电容的充电电压调节电磁力大小,电磁力频率在10~90 Hz之间连续可调。应用所研制装置,采用鱼骨状裂纹试验法,对LY12高强铝合金进行了控制热裂纹试验,发现脉冲电磁力可以起到减小焊接热裂倾向的作用;且电路结构简单,控制方便,可靠性高。仿真和试验证明该装置满足设计要求。

     

    Abstract: The thin-walled structures of high-strength alloy have serious distortion and high susceptibility to welding hot cracking.To solve these problems, a new type of pulse electromagnetic force generator was developed to control welding stress in virtue of the pulse electromagnetic force during welding, without direct contacting the weldment.The magnitude of the force can be controlled by changing voltage of energy storage capacitor, while the frequency of the force can also be set in 10-90 Hz.The generator is characterized by simple structure of main circuit, convenient adjustment and excellent reliability.Simulation and experiment results indicate that the generator satisfies the requirement of design.The fishbone cracking test with pulse electromagnetic force confirms that the pulse electromagnetic force is capable of controlling welding hot cracking.

     

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