Title:
【発明の名称】継目無管を製造するための穿孔圧延機
Document Type and Number:
Japanese Patent JPH07505092
Kind Code:
A
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.
Inventors:
Mozay, George N
Application Number:
JP51671693A
Publication Date:
June 08, 1995
Filing Date:
March 23, 1993
Export Citation:
Assignee:
Mozay, George N
International Classes:
B21B19/04; B21B25/04; B21B25/06; B21B27/08; B21B45/00; (IPC1-7): B21B19/04
Attorney, Agent or Firm:
Kyozo Yuasa (6 people outside)