Multi-position plate welding using modified double-J joint

Details Multi-position plate welding using modified double-J joint Multi-position plate welding using modified double-J joint

1982-09-27

1984-11-06

Albritton, C. L.

Electric heating

Metal heating

By arc

219 74, 219126, B23K 3300

Patent

active

044814020

ABSTRACT:
A multi-position method is provided for gas metal arc welding thick aluminum alloy plates in a single welding pass on each surface of the plates. A first plate edge is provided with a tongue portion having (1) a land surface abutting a portion of a second plate edge, and (2) two arcuate J-shaped side surfaces, each adjoining the land surface at opposite ends thereof and each adjoining its respective side surface of the first plate at an angle approximating 90.degree.. The J-shaped side surfaces and second plate edge surface cooperate to define a modified double-J welding groove. The plates are welded together in a single pass on each side thereof by first depositing a weld bead in the modified J groove on one side of the plates and then, after this bead has sufficiently solidified, a second weld bead is deposited in a single pass in the modified double-J groove on the other side of the plates. Welding is carried out in the presence of a shield gas, preferably argon, with a direct current ranging from 290 to 420 amperes.

REFERENCES:
patent: 2916600 (1959-12-01), Tichler
patent: 3328556 (1967-06-01), Nelson et al.
patent: 4038514 (1977-07-01), Ashton
patent: 4292496 (1981-09-01), Hoy et al.
Welding Handbook, 6th Edition, American Welding Society, pp. 8.3 through 8.8.

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