Method of installing a sleeve in one end of a tube

Details Method of installing a sleeve in one end of a tube Method of installing a sleeve in one end of a tube

1976-03-29

1977-06-14

DiPalma, Victor A.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

29401R, 29421E, 228 25, 228107, B21D 3906, B23P 1526

Patent

active

040287890

ABSTRACT:
Method for explosively expanding sleeves into heat exchanger tubes disposed in a tube sheet utilizing shaped charges in conjunction welding and brazing techniques to affectuate tube modifications and repairs including the steps of shaping the sleeve, placing specially shaped inserts into the sleeves, varying the explosive charges within the inserts and varying the confinement of the explosive charge within the insert to explosively weld the sleeve to the tube, expand the sleeve to the tube, and/or expand the tube to engage the tube sheet and welding or brazing one end of the sleeve to the tube to form a seal.

REFERENCES:
patent: 2620830 (1952-12-01), Schultz
patent: 3411198 (1968-11-01), Berman et al.
patent: 3562887 (1971-02-01), Schroeder et al.
patent: 3590877 (1971-07-01), Leopold et al.
patent: 3698067 (1972-10-01), Feiss

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