公开(公告)号：US5760372A

公开(公告)日：1998-06-02

申请号：US669993

申请日：1996-06-21

申请人： Kunio Karino ,  Haruo Moriguchi ,  Shigeru Okamoto ,  Kenzo Danjo ,  Atushi Kinoshita ,  Toshikazu Fujiyoshi

发明人： Kunio Karino ,  Haruo Moriguchi ,  Shigeru Okamoto ,  Kenzo Danjo ,  Atushi Kinoshita ,  Toshikazu Fujiyoshi

IPC分类号： B23K9/067 ,  B23K9/073 ,  B23K9/095 ,  B23K9/06

CPC分类号： B23K9/0956

摘要： An arc welder includes an inverter for converting a DC voltage to a RF voltage which, then, is rectified by a rectifier. The output of the rectifier is smoothed by a DC reactor. A RF generator provides RF current to flow between a workpiece and a main electrode of the welder forming a welder load, which initiates arcing between the workpiece and the main electrode. Initiation of arcing causes output current from the DC reactor to be supplied to the welder load, so that steady-state arcing is established. The DC reactor has a relatively small inductance which permit the output current from the DC reactor to reach a value required for establishing the steady-state arcing within a time period during which the RF generator provides RF current. The RF voltage from the inverter has a relatively high frequency so that the output current from the DC reactor can sustain the steady-state arcing.

摘要翻译： 电弧焊机包括用于将DC电压转换成RF电压的逆变器，然后由整流器整流。 整流器的输出由直流电抗器平滑。 RF发生器提供RF电流以在焊接工件的工件和主电极之间流动，形成焊接负载，其启动工件和主电极之间的电弧。 引起电弧会使直流电抗器的输出电流提供给焊机负载，从而建立稳态电弧。 DC电抗器具有相对小的电感，其允许来自DC电抗器的输出电流达到在RF发生器提供RF电流的时间段内建立稳态电弧所需的值。 来自逆变器的RF电压具有相对高的频率，使得来自DC电抗器的输出电流可以维持稳态电弧。