Method and apparatus for forming and welding thin-wall tubing

Details Method and apparatus for forming and welding thin-wall tubing Method and apparatus for forming and welding thin-wall tubing

1988-12-01

1990-03-06

Godici, Nicholas P.

Metal fusion bonding

Process

With shaping

228146, 228 175, 2281737, 228147, 219 611, 219 6111, 219 64, 219 617, B23K 902, B23K 3106

Patent

active

049058851

ABSTRACT:
A method and apparatus for forming thin-wall tubing in a funnel die or with a series of sets of forming rollers. The tubing is then welded by a method and apparatus which includes simultaneous guiding of the both the inner and outer peripheries of the tubing during the welding operation by a mandrel and a sleeve, respectively, so that lack of rigidity of the tubing is not a limitation. The edges of the tubing are not clamped, but are allowed to "float" during welding. The resulting tubing is highly uniform. A wide range of tubing materials can be welded and thin-wall tubing of nearly any desired length or wall thickness can be produced.

REFERENCES:
patent: 2007996 (1935-07-01), Baker
patent: 2613303 (1952-10-01), Babbitt
patent: 2796508 (1957-06-01), Holman et al.
patent: 3421676 (1969-01-01), Jenkins
patent: 3610863 (1971-10-01), Doublet
patent: 3934324 (1976-01-01), Hess et al.
patent: 4207453 (1980-06-01), Astill
patent: 4296300 (1981-10-01), Bottiglia
patent: 4724993 (1988-02-01), Gotoh
Catalog pages by Turek & Heller Machine, Inc. for Models WU25-10 and WU35-12, printed in U.S.A., Apr. 1979.
Catalog pages by Jetline Engineering, Inc. for Longitudinal Seam Welders, printed in U.S.A., Apr. 1981.

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