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    • 8. 发明授权
    • Method of high frequency pulse arc welding and apparatus therefor
    • 高频脉冲电弧焊接方法及其设备
    • US06225598B1
    • 2001-05-01
    • US09112210
    • 1998-07-09
    • Masayasu NiheiJin OnukiTakao FunamotoIzumi SakuraiAkira Onuma
    • Masayasu NiheiJin OnukiTakao FunamotoIzumi SakuraiAkira Onuma
    • B23K909
    • B23K9/092
    • In a method for high frequency pulse welding and an apparatus therefor, a highly directive arc can be obtained by eliminating the effect of the inductance of the welding cable, which tends to make the high frequency electromagnetic pinch force large. In a method and an apparatus for high frequency pulse arc welding which is performed by generating an arc between an inconsumable electrode or a consumable electrode arranged near a portion of a base metal to be welded and the base metal with main pulse current, when the main pulse current is shifted from ON to OFF, a reverse pulse current having a polarity opposite to the polarity of the main pulse is supplied between the electrode and the base metal to improve the stiffness (directivity) of the arc by making the rising and falling edges of the pulses steeper. A rail-car and a nuclear power plant obtained by the method are also provided.
    • 在高频脉冲焊接的方法及其装置中,通过消除焊接电缆的电感的影响,可以获得高度指示的电弧,这倾向于使高频电磁夹紧力变大。 在高频脉冲电弧焊接方法和装置中,通过在被焊接的贱金属部分附近设置的不可蚀电极或可消耗电极与主脉冲电流的母材之间产生电弧来进行, 脉冲电流从ON变为OFF,在电极和母材之间提供具有与主脉冲极性相反极性的反向脉冲电流,通过使上升沿和下降沿提高电弧的刚度(方向性) 的脉冲更陡。 还提供了通过该方法获得的轨道车和核电站。