Method of and apparatus for rolling long work pieces

Metal deforming – By use of tool acting during relative rotation between tool... – During rotation of work

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72102, B21H 118

Patent

active

041214439

ABSTRACT:
Method of and apparatus for elongating a work piece axially while reducing it in diameter by subjecting it to rolling in a rolling mill having opposed similar rolls of the multiple wedge type rotating in the same direction through at least two revolutions. In a first revolution of the rolls the axially central part of the work piece is reduced in diameter by first sets of oppositely directed rolling members on the opposed rolls, and in the second revolution of the rolls the axially central part of the preliminarily rolled work piece is further reduced in diameter and axially elongated by second sets of oppositely directed rolling members on the opposed rolls.

REFERENCES:
patent: 3208257 (1965-09-01), Holub
patent: 3827269 (1974-08-01), Hoagland et al.

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