ARC start ancillary apparatus

Details ARC start ancillary apparatus ARC start ancillary apparatus

1998-08-04

2000-05-23

Shaw, Clifford C.

Electric heating

Metal heating

By arc

21913021, 2191305, B23K 9067

Patent

active

060668318

ABSTRACT:
In an arc start ancillary apparatus, which is connected in parallel to a welding power source for supplying electric power necessary for arc discharge between an electrode and a base metal, for supplying a pulsed electric current in transferring from spark discharge to arc discharge, an object of the present invention is to solve a problem in that arc is not started, and to keep the effective value of current low. A capacitor with a relatively high capacitance is connected to secure a current for transferring from spark discharge to arc discharge, and a D.C. high voltage of a high voltage generator is applied according to a pulse in a period to which the period of pulse signals of a fixed period type high voltage controller is set so that the effective value of the current between an electrode and a base metal is kept low.

REFERENCES:
patent: 4618760 (1986-10-01), Murch et al.
patent: 4672175 (1987-06-01), Niven
patent: 5264679 (1993-11-01), Martin
patent: 5773792 (1998-06-01), Hagiwara et al.
patent: 5852278 (1998-12-01), Tanaka et al.
Patent Abstracts of Japan, vol. 096,No. 012, Dec. 26, 1996.

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