Method of manufacturing thick-walled small diameter pipe

Details Method of manufacturing thick-walled small diameter pipe Method of manufacturing thick-walled small diameter pipe

1992-11-30

1994-08-23

Terrell, William E.

Metal working

Method of mechanical manufacture

With separating, localizing, or eliminating of as-cast...

295276, 51 34H, 51 48R, 51290, 82 111, 408 53, 409244, B23P 1500, B24B 100, B24B 540

Patent

active

053395131

ABSTRACT:
A method of manufacturing a thick-walled small diameter pipe by repeating a process comprising a pipe extension process and a heating process on a pipe to be processed plural times, wherein a machining process on the inner circumferential surface of said pipe to be processed is performed prior to the pipe extension process in the final cycle of said process or a process near the final cycle to remove a black skin layer, cracks and puckers, providing smooth inner surface and excellent proof pressure.

REFERENCES:
patent: 1532107 (1925-03-01), Ferris
patent: 2183861 (1939-12-01), Cotter, Sr.
patent: 2315476 (1943-03-01), Groene
patent: 3046846 (1962-07-01), Bonnafe
patent: 3517536 (1970-06-01), Fitzmaurice
patent: 3824738 (1974-07-01), Hall et al.
patent: 4531868 (1985-07-01), Gabriele
patent: 4573841 (1986-03-01), Petkov et al.
patent: 5062187 (1991-11-01), Bromley

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