Method and apparatus for a differential rolling-in of tubes

Details Method and apparatus for a differential rolling-in of tubes Method and apparatus for a differential rolling-in of tubes

1975-02-20

1977-02-15

DiPalma, Victor A.

291574, 29727, 72 10, 72 29, 72377, 113 1C, B21D 5302

Patent

active

040076997

ABSTRACT:
Method and apparatus for differentially rolling-in tubes into plates and walls, especially of heat exchangers, according to which the magnitude of the expansion of the tube section to be rolled-in into the respective wall or plate is predetermined, is ascertained and maintained during the rolling-in action. The magnitude of the tube expansion for connection of the tube to the respective plate or wall is adjustable in conformity with a program and has different values over the rolling-in length of the tube.

REFERENCES:
patent: 1516704 (1924-11-01), Braun
patent: 2690205 (1954-09-01), Stary
patent: 3349465 (1967-10-01), LaPan et al.
patent: 3449812 (1969-06-01), Hauschke et al.
patent: 3585701 (1971-06-01), Stary
patent: 3628227 (1971-12-01), Blackburn et al.
patent: 3718017 (1973-02-01), Blackburn

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