Pipe end conditioner and method

Details Pipe end conditioner and method Pipe end conditioner and method

1987-12-07

1988-06-21

Jones, David

Metal deforming

By application of fluent medium, or energy field

Using fixed die

72 61, 72 56, 72370, 29421R, B21D 2602

Patent

active

047518367

ABSTRACT:
An apparatus and method including a swaging die (10) with an internal cone-shaped bore section which will swage a pipe (14) forced into such die and form the cone section (30) on the pipe. Within the swaging die (10) is an insert/ejector plate (32) of a diameter to fit within the bore of the pipe (14) and wherein high pressure fluid directed through the insert/ejector plate (32) to the inside wall of the pipe (14) expands the pipe thus forming a longer, more acceptable, cone section (30) capable of providing more thread length for later threading operation. After the expansion pressure is relieved, the insert/ejector plate (32) is used to force the pipe (14) out of the swaging die (14).

REFERENCES:
patent: 3486703 (1969-12-01), Sorlie
patent: 3487668 (1970-01-01), Fuchs, Jr.
patent: 4622732 (1986-11-01), Broderick

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