Method and device for underwater electrical welding

Details Method and device for underwater electrical welding Method and device for underwater electrical welding

1988-06-30

1990-01-16

Shaw, Clifford C.

Electric heating

Metal heating

By arc

219 72, B23K 906

Patent

active

048945129

ABSTRACT:
Method of underwater arc welding comprising the steps of placing a welding electrode nearby a parent material to be welded, immerged in water; generating a high frequency voltage between the electrode and the parent material for starting a striking arc and supplying a high frequency current to said electrode, after said striking arc has been initiated; generating a welding voltage for producing a weld at the parent material and; simultaneously sustaining the high frequency current, superimposed to the welding current, for stabilizing said welding arc during the time duration of the underwater arc welding.

REFERENCES:
patent: 2770710 (1956-11-01), Burkart
patent: 2784349 (1957-03-01), Anderson
patent: 3632950 (1972-01-01), Berghof
patent: 4182947 (1980-01-01), Brower
patent: 4292497 (1981-09-01), Paton et al.
"Deep Hyperbaric Welding. Mechanization/Automation," by H. O. Knagenhjelm, International Conference on Underwater Welding, Jun. 27-28, 1983, pp. 341-348.

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