Apparatus for hydraulically expanding a tube

Details Apparatus for hydraulically expanding a tube Apparatus for hydraulically expanding a tube

1977-06-28

1978-11-21

DiPalma, Victor A.

Metal working

Means to assemble or disassemble

Heat exchanger

291574, 29421R, 72 62, B23P 1526

Patent

active

041259378

ABSTRACT:
A mandrel that forms an annular space when inserted within a tube and has O rings adjacent each end and a leading end having a tapered portion and a spring cooperatively associated with the O ring to facilitate sliding the mandrel into the tube and forming a fluid-tight seal adjacent the leading end of the mandrel so that pressurized fluid can be introduced into the annular space to expand the tube into engagement with a tube sheet.

REFERENCES:
patent: 2460580 (1949-02-01), Huber
patent: 2479702 (1949-08-01), Rood
patent: 3977068 (1976-08-01), Krips
patent: 3979810 (1976-09-01), Krips

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