Narrow gap arc welding process and apparatus therefor

Details Narrow gap arc welding process and apparatus therefor Narrow gap arc welding process and apparatus therefor

1986-12-11

1990-01-02

Broome, H.

Electric heating

Metal heating

By arc

21912512, 2191278, B23K 900

Patent

active

048914932

ABSTRACT:
A narrow gap arc welding process comprises steps of defining a narrow gap between a pair of members to be welded arranged so as to face each other at a predetermined distance, feeding a consumable electrode into a guide cylinder which is movable along the narrow gap, and generating electric arc between the tip of the consumable electrode and the members to be welded to unite them with each other, wherein the consumable electrode, while being deformed plastically to have a wave-like pattern with a pitch of about 10 to 30 mm and a molding width of about 2 to 5 mm depending on welding conditions, is fed into the narrow gap with the direction of the molding width being in line with the direction of the width of the narrow gap and the direction of the tip of the consumable electrode being changed so as to point out one after the other facing edge of the members to be welded alternately at a high frequency. Also, an apparatus for practicing the process is described.

REFERENCES:
patent: 1678941 (1928-07-01), Helman
patent: 1907051 (1933-05-01), Emery
patent: 2824213 (1958-02-01), Shearer
patent: 3576966 (1971-05-01), Sullivan
patent: 3786225 (1974-01-01), Gibbs
patent: 4074105 (1978-02-01), Minehisa
patent: 4254322 (1981-03-01), Asano

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