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    • 10. 发明授权
    • Method of electrode current control in welding apparatus having a
plurality of electrodes
    • 具有多个电极的焊接设备中的电极电流控制方法
    • US4396823A
    • 1983-08-02
    • US313832
    • 1981-10-22
    • Masayasu NiheiSatoshi KokuraEiji AshidaYuzo KozonoAkira Onuma
    • Masayasu NiheiSatoshi KokuraEiji AshidaYuzo KozonoAkira Onuma
    • B23K9/167B23K9/00B23K9/073B23K9/10B23K9/16B23K9/09
    • B23K9/1068
    • In a welding apparatus having a plurality of electrodes and adapted for carrying out welding operation on a workpiece by alternately supplying currents to the individual electrodes through switching elements, an apparatus and method of controlling the currents supplied to the electrodes, comprising selecting the values of the currents supplied to the individual electrodes depending on the material of the workpiece, and carrying out the welding operation on the workpiece by alternately supplying the currents of the selected values to the individual electrodes respectively through the switching elements. The method is featured by the fact that the ratio between the individual currents is selected under the condition that the sum of the values of all the currents is maintained at a predetermined value. It is also featured by the fact that, depending on the welding condition, the values of the individual currents can be freely selected without the limitation of maintaining the sum of all the currents at the predetermined value. Therefore, the apparatus and method are applicable to welding of a variety of materials by selecting the values of the individual currents depending on whether the workpiece has a high or low melting point and also whether the workpiece has a high or low heat conductivity.
    • 在具有多个电极的焊接装置中,适于通过交替地通过开关元件向各个电极提供电流来对工件进行焊接操作的装置和方法,包括:选择所述电极的电流值 根据工件的材料供应到各个电极的电流,并且通过交替地通过开关元件将选定值的电流交替地提供给各个电极,从而对工件进行焊接操作。 该方法的特征在于,在所有电流的值的总和保持在预定值的条件下选择各个电流之间的比率。 这也是因为根据焊接条件,可以自由地选择各个电流的值,而不必将所有电流的总和保持在预定值。 因此,该装置和方法适用于通过根据工件是高熔点还是低熔点选择各个电流值以及工件是否具有高导热性或低导热性来对各种材料进行焊接。