Method and apparatus for reducing magnetic field strengths in we

Details Method and apparatus for reducing magnetic field strengths in we Method and apparatus for reducing magnetic field strengths in we

1987-03-09

1988-08-02

Shaw, Clifford C.

Electric heating

Metal heating

By arc

219136, B23K 908

Patent

active

047615362

ABSTRACT:
Apparatus for reducing the strength of magnetic fields in a vicinity of weld zone in a workpiece to be welded includes a Hall effect sensor for sensing the strength of the resultant magnetic field in the weld zone vicinity, and a magnetic field generator responsive to the output signals from the Hall effect sensor to generate a counterbalancing magnetic field in the weld zone vicinity so as to reduce the resultant magnetic field in the weld zone vicinity.

REFERENCES:
patent: 3150624 (1964-09-01), Brems
patent: 3626145 (1971-12-01), Jackson
patent: 3941974 (1976-03-01), Kano et al.

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