Friction welded transition joint

Details Friction welded transition joint Friction welded transition joint

1980-05-05

1982-06-08

Callaghan, Thomas F.

Pipe joints or couplings

Elbow

228112, 228175, 285286, 285DIG6, F16L 1302

Patent

active

043336710

ABSTRACT:
A transition joint is disclosed for joining together tubular pieces formed respectively from a low alloy or carbon steel and a high temperature alloy composition having substantially different characteristics such as coefficient of thermal expansion, the transition joint including a plurality of tubular parts interconnected with each other by means of friction weld joints formed at an angle of 90.degree. to the axis of the transition joint, the tubular parts at opposite ends of the transition joint being selected to facilitate in situ welding to the low alloy or carbon steel and high temperature alloy respectively.

REFERENCES:
patent: 1613461 (1927-01-01), Johnson
patent: 2763923 (1956-09-01), Webb
patent: 2769227 (1956-11-01), Sykes et al.
patent: 2770030 (1956-11-01), Carpenter et al.
patent: 3052016 (1962-09-01), Zimmer
patent: 3123447 (1964-03-01), Zimmer
patent: 3175284 (1965-03-01), Cotovsky
patent: 3284174 (1966-11-01), Zimmer
patent: 3425718 (1969-02-01), Shaw, Jr.
patent: 3662941 (1972-05-01), Gage
patent: 4010965 (1977-03-01), Izuma et al.

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