Y and T-finned tubes and methods and apparatus for their making

Details Y and T-finned tubes and methods and apparatus for their making Y and T-finned tubes and methods and apparatus for their making

1978-07-07

1979-09-25

Larson, Lowell A.

Metal deforming

By use of tool acting during relative rotation between tool...

With cutting of work or product

72 79, 72 98, 291573AH, 165184, B21D 5306, B21H 300

Patent

active

041686187

ABSTRACT:
This invention concerns finned tubes for use in heat exchanging whereby the fins have a generally T or Y shape. There is disclosed process and apparatus for making these Y and T-finned tubes whereby a smooth tube is subjected to a rolling process with notching rollers being arranged between rolling discs. Bending rollers can be used to form Y fins and, if desired these can be subsequently flattened into T-fins.

REFERENCES:
patent: 3326283 (1967-06-01), Ware
patent: 3383892 (1968-05-01), Brothen
patent: 3753364 (1973-08-01), Runyan et al.
patent: 3768290 (1973-10-01), Zatell
patent: 3887004 (1975-06-01), Beck
patent: 4004441 (1977-01-01), Leszak

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