Process and apparatus for eliminating short circuits in electric

Details Process and apparatus for eliminating short circuits in electric Process and apparatus for eliminating short circuits in electric

1978-02-16

1980-12-30

Shaw, C. C. C.

Electric heating

Metal heating

Cutting or disintegrating

219 69C, 219 69S, 219 69P, B23P 102

Patent

active

042425557

ABSTRACT:
Process and apparatus for eliminating short circuits occurring in the machining zone between an electrode workpiece and an electrode tool in the course of an electrical discharge machining operation. Short circuits, caused by bridging of the electrodes by metallic particles, are burnt by an auxiliary high intensity electrical discharge across the gap between the electrodes applied after a predetermined time interval, or time delay, from the beginning of a normal current pulse.

REFERENCES:
patent: 3277338 (1966-10-01), Webb
patent: 3609281 (1971-09-01), Kauffman
patent: 3671705 (1972-06-01), Raznitsyn
patent: 3761673 (1973-09-01), Sennowitz
patent: 3864541 (1975-02-01), Inoue
patent: 3916138 (1975-10-01), Pfau

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