Arc time indicating apparatus for stud welding utilizing a capac

Details Arc time indicating apparatus for stud welding utilizing a capac Arc time indicating apparatus for stud welding utilizing a capac

1976-09-27

1979-01-02

Goldberg, Elliot A.

Electric heating

Metal heating

For bonding with pressure

21913001, B23K 910, B23K 920

Patent

active

041328795

ABSTRACT:
Apparatus is provided for measuring and indicating the length of time a welding arc exists in a stud welding cycle utilizing a capacitive power source. Heretofore, the arc time of stud welding apparatus employing capacitors for the power source has only been measured in the laboratory with an oscilloscope. The new indicating and measuring apparatus for the arc time is usable with conventional stud welding, contact stud welding, and gap stud welding employing capacitive power sources. The apparatus produces a number on a visual indicator in the form of a meter or a digital read-out device and the operator can note the number when the ultimate weld is produced. The operator can then subsequently adjust the equipment to repeat that number on the indicator to always be assured of optimum weld quality without the necessity of repeating a number of test welds.

REFERENCES:
patent: 3543156 (1970-11-01), Hall et al.
patent: 3764911 (1973-10-01), East
patent: 3854472 (1974-12-01), Giroi et al.
patent: 3932724 (1976-01-01), Raycher

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