Disintegrating electrodes

Details Disintegrating electrodes Disintegrating electrodes

1987-07-30

1988-05-10

Pellinen, A. D.

Electric heating

Metal heating

Cutting or disintegrating

204280, 219 69E, B23K 924, B23H 104

Patent

active

047437316

ABSTRACT:
A metal disintegrating electrode for forming a hole in a metal workpiece such as a pipe by a thermo-fracture process without creating large chips or particles that otherwise would contaminate the inside of the pipe. The electrode comprises an elongated tubular sheath filled with a cluster of tubes or a cluster of tubes and rods which cause the metal of the pipe to disintegrate into small particles. The tubes also conduct a flow of coolant against the pipe and along the outside of the tubular sheath in order to promote the thermo-fracture process and to keep the electrode from sticking to the pipe.

REFERENCES:
patent: 2385665 (1945-09-01), Warwick
patent: 3058895 (1962-10-01), Williams
patent: 4182947 (1980-01-01), Brower
patent: 4441004 (1984-04-01), Inoue
patent: 4470896 (1984-09-01), Petitimbert
patent: 4541616 (1985-09-01), Dean
patent: 4596916 (1986-06-01), Inoue
patent: 4660807 (1987-04-01), Campana

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