Apparatus for maintaining alignment of a shrinking weld joint in

Details Apparatus for maintaining alignment of a shrinking weld joint in Apparatus for maintaining alignment of a shrinking weld joint in

1980-01-03

1981-09-22

Rubinson, Gene Z.

Electric heating

Metal heating

By arc

219121EC, 219159, 318632, B23K 1500, G05D 312, B23K 3704

Patent

active

042912199

ABSTRACT:
The present invention is directed to an apparatus for automatically maintaining a shrinking weld joint in alignment with an electron beam during an electron-beam multipass-welding operation. The apparatus utilizes a biasing device for continually urging a workpiece-supporting face plate away from a carriage mounted base that rotatably supports the face plate. The extent of displacement of the face plate away from the base is indicative of the shrinkage occuring in the weld joint area. This displacement is measured and is used to move the base on the carriage a distance equal to one-half the displacement for aligning the weld joint with the electron beam during each welding pass.

REFERENCES:
patent: 3255336 (1966-06-01), Purcell
patent: 3626140 (1971-12-01), Peyrot
patent: 3648007 (1972-03-01), Oppermann et al.
patent: 3648140 (1972-03-01), Majek et al.
patent: 3672246 (1972-06-01), Prewett, Jr. et al.
patent: 3754178 (1973-08-01), Dormehl et al.
patent: 3958739 (1976-05-01), Wicker et al.
patent: 4209121 (1980-06-01), Newcomb

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