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Title:
METHOD FOR PREVENTING SEIZURE OF GUIDE SHOE IN ROLLING OF SEAMLESS STEEL PIPE
Document Type and Number:
Japanese Patent JPH02295603
Kind Code:
A
Abstract:

PURPOSE: To effectively prevent the formation of the shoe mark flaws generated by seizure by rolling a material to be rolled while supplying a seizure preventive agent on the outside surface of the material to be rolled over the entire contact length region of guide shoes and the material to te rolled.

CONSTITUTION: The seizure preventive agent is continuously supplied over the total contact length region of the guide shoes 4, 4' and the material 0 to be rolled in the axial direction of a seamless steel pipe 1 at the time of rolling of the above-mentioned pipe. The seizure preventive agent is, therefore, spread between the fresh surface incessantly generated on the surface of the material 0 by the rolling thereof and the guide shoes 4, 4 ', by which the seizure is exactly prevented. As a result, the formation of the shoe mark flaws arising from the seizure is effectively prevented.


Inventors:
KANARI SHOHEI
Application Number:
JP11609989A
Publication Date:
December 06, 1990
Filing Date:
May 11, 1989
Export Citation:
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Assignee:
KAWASAKI STEEL CO
International Classes:
B21B19/02; B21B19/04; B21B23/00; B21B45/02; (IPC1-7): B21B19/02; B21B23/00
Domestic Patent References:
JPS5868409A1983-04-23
JPS62220204A1987-09-28
Attorney, Agent or Firm:
Akihide Sugimura (5 outside)