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Title:
METHOD FOR REUSING GUIDE SHOES FOR ROLLING SEAMLESS STEEL PIPE
Document Type and Number:
Japanese Patent JPH0623407
Kind Code:
A
Abstract:

PURPOSE: To prolong a service life of rolling guide shoes by fitting the rolling guide shoes by reversing the inlet side and the outlet side after using the rolling guide shoes for a necessary rolling period of time.

CONSTITUTION: A worn-out state 6 of the guide shoes 5 after being used for a specified period of time is shown and although a center line part in the longitudinal direction of the guide shoe 5 is worn out at the inlet side part, wear concentrates on an upper half part of the guide shoe toward the outlet side. Accordingly, after the rolling guide shoes 5 set up on the rolling mill inlet side are used for a necessary rolling period of time, these are fitted by reversing the inlet side and the outlet side. The shape of the guide shoes 5 is preferable to be made to point symmetry. In wear of the guide shoes 5, wear 6A before reversal is not superimposed on wear 6B after reversal. Consequently, a tool consumption unit can be halved without spending expenses.


Inventors:
TAKATO SEIICHI
KUSUHARA SHIGEO
AMANO ITSUO
SEGUCHI TAKAYUKI
Application Number:
JP18242092A
Publication Date:
February 01, 1994
Filing Date:
July 09, 1992
Export Citation:
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Assignee:
NIPPON STEEL CORP
International Classes:
B21B23/00; (IPC1-7): B21B23/00
Attorney, Agent or Firm:
Tomoyuki Yathata (1 outside)