Method of pressure fitting a tube in a tube sheet

Details Method of pressure fitting a tube in a tube sheet Method of pressure fitting a tube in a tube sheet

1982-02-16

1983-12-20

Goldberg, Howard N.

Metal working

Method of mechanical manufacture

Shaping by direct application of fluent pressure

29523, 291574, B23P 1700, B21D 1900, B21D 5300

Patent

active

044208677

ABSTRACT:
A tube end received in a bore of a tube sheet is expanded by introducing a mandrel into the tube end and utilizing fluid pressure to bias a pair of sealing rings outwardly to engagement with a tube end, thereby sealing off the clearance between the mandrel and the tube end. In addition to utilizing the fluid pressure to provide the sealing action, the invention admits the fluid pressure into the clearance and thereby expands the tube end.

REFERENCES:
patent: 3977068 (1976-08-01), Krips
patent: 4125937 (1978-11-01), Brown et al.
patent: 4210991 (1980-07-01), Cooper
"Hydraulic Expansion of Tubes", VGB Kraftwerkstechnik, vol. 1, 1979, pp. 81-87, M. Podhorsky, H. Krips.
Hydraulic Tube Expansion, In Hes Maschinenbau.

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