Autofrettage device for tubes

Details Autofrettage device for tubes Autofrettage device for tubes

1992-02-19

1993-01-12

Jones, David

Metal deforming

By application of fluent medium, or energy field

72 61, 29 111, B21D 2602

Patent

active

051779900

ABSTRACT:
An autofrettage device for a tube includes thrust bearings for receiving opposite ends of the tube. A mandrel is introducible into the tube and includes a sealing arrangement for sealing an annular gap between the mandrel and an inner wall of the tube against escape of a pressure medium supplied to the annular gap. A mandrel holder including a ball joint socket supports the end of said mandrel so that the mandrel is pivotally movable relative to the mandrel holder.

REFERENCES:
patent: 1540654 (1925-06-01), Schneider
patent: 1578751 (1926-03-01), Methlin
patent: 1602282 (1926-10-01), Methlin
patent: 3751954 (1973-08-01), Ezra et al.
patent: 4571969 (1986-02-01), Tomita

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