Welding current turned on gradually. Current increased gradually over short distance until full operating current reached, and welding proceeds in "keyhole" mode. Tests in laboratory and in production show gradual-turn-on technique 100 percent reliable.


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    Title :

    Starting VPPA Welds Without Pilot Holes


    Contributors:

    Published in:

    Publication date :

    1988-09-01



    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English




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