High speed low deposition submerged arc welding apparatus and me

Details High speed low deposition submerged arc welding apparatus and me High speed low deposition submerged arc welding apparatus and me

1992-04-24

1993-05-25

Shaw, Clifford C.

Electric heating

Metal heating

By arc

219 61, 219 73, 2191301, B23K 918

Patent

active

052142655

ABSTRACT:
A method and apparatus for submerged arc welding with four electrodes positioned along a line from front to rear. The first of the electrodes is supplied with direct current, and the remaining three electrodes are supplied with alternating current. The direct current electrode generate an arc that penetrates the base metal and initiates a weld. The other electrodes are supplied with alternating current having a 90.degree..+-.15.degree. current separation between the leading and trailing AC electrodes, and the trailing and middle AC electrodes. Alternating current is supplied between electrodes the trailing and middle AC electrode, having a 180.degree..+-.30.degree. current separation. The AC electrodes combine to generate an arc that deposits a filler and shapes the weld.

REFERENCES:
patent: 4442340 (1984-04-01), Kawabata et al.

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