High-frequency arc striking device and auxiliary electrode of an

Details High-frequency arc striking device and auxiliary electrode of an High-frequency arc striking device and auxiliary electrode of an

1983-11-09

1985-01-15

Shaw, Clifford C.

Electric heating

Metal heating

By arc

219136, B23K 906

Patent

active

044939698

ABSTRACT:
A high frequency-high voltage generator supplies current, on one hand, to a first arc striking circuit connecting a main electrode to an auxiliary electrode and, on the other hand, to a second arc striking circuit which connects one of the two electrodes to the workpiece to be treated. In this way there is achieved a striking of the arc in two stages. This ensures high reliability regardless of the nature of the material from which the workpiece is made regardless of the protecting gas used, in particular for the TIG welding of light alloys in a helium atmosphere. The device is applicable to an automatic TIG welding.

REFERENCES:
patent: 2516037 (1950-01-01), Williams
patent: 2784349 (1957-03-01), Anderson
patent: 3089019 (1963-01-01), Reis et al.
patent: 4170727 (1979-10-01), Wilkins
patent: 4280042 (1981-07-01), Berger et al.

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