Tube rolling method and apparatus

Details Tube rolling method and apparatus Tube rolling method and apparatus

1993-11-29

1996-07-09

Larson, Lowell A.

Metal deforming

With use of control means energized in response to activator...

Metal deforming by use of roller or roller-like tool element

72235, 722525, 72278, 72367, B21B 1714, B21B 2702

Patent

active

055333702

ABSTRACT:
According to the rolling method and the apparatus to be used for its execution of the invention, by rolling a tube to be rolled by using four rolls possessing roll grooves for forming a caliber in a shape of having a relief portion, cold reducing or cold stretch reducing is done continuously without causing wall thickness deviation, and by sizing the rolled tube material by a die disposed at the exit side, the dimensional precision and yield of rolled tubes may be enhanced by a small number of stands.

REFERENCES:
patent: 1352493 (1920-09-01), Wolffgram
patent: 1779478 (1930-10-01), Leech
patent: 2041271 (1936-05-01), Stuting
patent: 2233736 (1941-03-01), Findlater
patent: 3831417 (1974-08-01), Ritter et al.
patent: 4260096 (1981-04-01), Samarynov et al.
Camp-ISIJ, vol. 2 (1989) "Cold Stretch Reducing of Low Carbon Steel Pipes by 3 Roll-Hot Stretch Reducing Mill".

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