Device and method for expansion-swaging tubes into the bores of

Details Device and method for expansion-swaging tubes into the bores of Device and method for expansion-swaging tubes into the bores of

1975-07-14

1976-08-31

Dipalma, Victor A.

Metal working

Method of mechanical manufacture

Shaping by direct application of fluent pressure

291574, 29202D, 72 62, 113 1C, 228155, B23P 1700

Patent

active

039770680

ABSTRACT:
A device and method for the expansion-swaging of tubes into a tube plate where an expansion core is inserted into the tube and two pressure rings on the core axially delimit a radially very narrow pressure space into which a very highly pressurized fluid is introduced, thereby expanding the tube. The pressure rings are of highly pressure resistant material and are supported by abutment shoulders of inner and outer core guide portions engaging the tube with minimal clearance.

REFERENCES:
patent: 1930745 (1933-10-01), Fisher
patent: 2460580 (1949-02-01), Huber
patent: 2479702 (1949-08-01), Road
patent: 3349465 (1967-10-01), La Pan et al.
patent: 3562887 (1971-02-01), Schroeder et al.
patent: 3608173 (1971-09-01), Watson et al.
patent: 3774291 (1973-11-01), Snyder et al.

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