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Title:
GUIDE SHOE FOR ROLLING MILL FOR MANUFACTURE OF SEAMLESS TUBE
Document Type and Number:
Japanese Patent JPS6487004
Kind Code:
A
Abstract:

PURPOSE: To manufacture an economic guide shoe having good workability and crack-resistance by making a member sliding on a rolled stock and an other member of different materials as to the guide shoe being used in a diagonal rolling mill for seamless tubes manufacturing.

CONSTITUTION: A guide shoe used in a diagonal rolling mill at a manufacturing stages of piercing, drawing, and cold finishing of seamless tubes is constructed so that a member (shoe part) (a) sliding on a rolled stock and an other member (guide part) (b) are made of different materials. That is, a material of the shoe part (a) is selected from among high Cr-Ni cast steel, high Cr-Ni base alloys, Ni base alloys, hastelloy alloy, ceramics to meet a material of the rolled stock. A material of the guide part (b) is made by heat treating heat resistant low alloy steel. The guide shoe is integrally formed by fitting the shoe part (a) into the part (b).


Inventors:
TOMIMATSU KATSUFUMI
Application Number:
JP24408687A
Publication Date:
March 31, 1989
Filing Date:
September 30, 1987
Export Citation:
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Assignee:
NIPPON STEEL CORP
International Classes:
B21B23/00; B21B19/04; (IPC1-7): B21B23/00
Domestic Patent References:
JPS5772709A1982-05-07
JPS59153506A1984-09-01
JPS58147601U1983-10-04
Attorney, Agent or Firm:
Tomoyuki Yathata (1 outside)