Electric arc welding apparatus

Details Electric arc welding apparatus Electric arc welding apparatus

1981-05-12

1984-03-13

Reynolds, B. A.

Electric heating

Metal heating

By arc

336 60, B23K 908

Patent

active

044369808

ABSTRACT:
An electrical arc welding device for two workpieces to be welded together along an annular weld seam, e.g. ends of pipe sections, and in which a magnet arrangement surrounds the welding-seam path. According to the invention, a magnetizable ring is formed by the inwardly extending poles of a plurality of magnets having flat cores and surrounded by coils for electromagnetically energizing the cores.

REFERENCES:
patent: 1307654 (1919-06-01), Bergonie
patent: 1529570 (1925-03-01), Bethke
patent: 2931889 (1960-04-01), Lingafelter
patent: 4027135 (1977-05-01), Barger
patent: 4186364 (1980-01-01), Hanaoka
patent: 4222021 (1980-09-01), Bunker, Jr.
patent: 4308446 (1981-12-01), Okane

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