Hydraulic expansion swaging of tubes in tubesheet

Details Hydraulic expansion swaging of tubes in tubesheet Hydraulic expansion swaging of tubes in tubesheet

1978-09-05

1980-07-08

Combs, Ervin M.

Metal working

Method of mechanical manufacture

Shaping by direct application of fluent pressure

72 56, 72 58, B23P 1100, B21D 2602, B21D 3908

Patent

active

042109914

ABSTRACT:
The method of this invention involves abruptly applying a very high pressure pulse to the already pressurized annular space between a hydraulic expansion-swaging mandrel core and the tube being swaged to obtain a practically zero gap, after removal of the pressure, between the tube and the bore in which it is being swaged.

REFERENCES:
patent: 3535901 (1970-10-01), Tominaga
patent: 3977068 (1976-08-01), Krips
patent: 3979810 (1976-09-01), Krips et al.
patent: 4061139 (1977-12-01), Kauffman
patent: 4069573 (1978-01-01), Rogers et al.
patent: 4125937 (1978-11-01), Brown et al.

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