Piercing mill for seamless tube manufacture

Details Piercing mill for seamless tube manufacture Piercing mill for seamless tube manufacture

1993-08-06

1995-04-18

Larson, Lowell A.

Metal deforming

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

During rotation of work

B21B 1904

Patent

active

054068207

ABSTRACT:
A tube making mill setup includes an induction heater for a billet, with means to transfer the heated billet directly to a piercing machine. The piercing machine includes main driving and gripping rolls on skewed axes and which drive the billet onto a piercing point. Upper and lower control rolls have axes parallel to the direction of billet drive through the machine. Internal cooling of the control rolls and the piercing point is provided by circulating cooling water through them. The piercing point is at the distal end of a mandrel which is swingable through an arc to place the formed tube on a take-away carriage.

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