Methods and apparatus for reducing seizing in transverse rolling

Details Methods and apparatus for reducing seizing in transverse rolling Methods and apparatus for reducing seizing in transverse rolling

1988-03-30

1989-05-09

Larson, Lowell A.

Metal deforming

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

During rotation of work

B21B 1906

Patent

active

048277495

ABSTRACT:
A method and apparatus for transverse, preferably skew, rolling seamless tube blanks, is provided wherein said seamless tube blanks are rolled down by a mandrel rod lying in their longitudinal bore or are rolled onto a mandrel rod at the delivery end. During transverse rolling each tube blank is subjected to a predetermined, controllable torque exerted by the mandrel rod in order to eliminate substantially the formation of pockets in the region of the sizing pass during transverse rolling.

REFERENCES:
patent: 2006336 (1935-05-01), Diescher
patent: 2480381 (1949-08-01), Offutt
patent: 2780119 (1957-02-01), Holmquist
patent: 3566653 (1971-03-01), Unrath

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