Process for production of seamless tube and apparatus for proces

Details Process for production of seamless tube and apparatus for proces Process for production of seamless tube and apparatus for proces

1984-03-12

1986-03-25

Larson, Lowell A.

Metal deforming

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

With metal deformation of different type

72 97, 72208, 72368, B21B 1904

Patent

active

045774811

ABSTRACT:
A process and apparatus for the production of seamless tubing incorporating a push bench is provided in which ingots are pierced in the longitudinal direction by diagonal rolls over the stopper rods of a piercing mill to provide pierced ingots having one end with a wall thickening which protrudes outwardly or inwardly, then the wall thickening ends reshaped to provide a partially closed end and finally the pierced ingots are forced through the roll passes of a push bench by mandrel rods engaging the partially closed end so that the ingots are formed into a tube bloom.

REFERENCES:
patent: 2803154 (1957-08-01), McLay

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