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Title:
MANUFACTURE OF GUIDE SHOE USED FOR MANUFACTURING SEAMLESS PIPE EXCELLENT IN WEAR-AND-SEIZURE-RESISTANT PROPERTIES
Document Type and Number:
Japanese Patent JPS59153506
Kind Code:
A
Abstract:

PURPOSE: To improve the seizure-and-peel-resistant properties of a guide shoe and to extend its service life by using a guide shoe, for manufacturing a seamless pipe, having the surface provided with an undercut part on which ceramics are overlayed by spraying.

CONSTITUTION: A guide shoe 1 for manufacturing a seamless pipe is made of special high carbon Ni-Cr-Mo steel, etc. and; a part, liable to wear by the contact with a high temperature seamless pipe, is undercut at undercut angles θ1, θ2, θ3, θ4 respectively, and a metal excellent in oxydation-resistant properties, such as Ni-Cr alloy or Cr, is sprayed, as a substrate material, on the undercut part 3, which is heat treated at 900W1,300°C for 30minW1hr to diffuse the metal in the undercut part 3 and to adhere it tightly to the part 3. Next, ceramic powder of ZnO2, Al2O3, TiO2, Cr2O3, SiO2, MgO, Si3N4, etc. is sprayed independently or after compounding them to overlay it on the part 3, then the part 3 is prevented from being worn by the friction between it and the seamless pipe.


Inventors:
OCHIAI KENICHIROU
HIRAI MASAO
KAMATA AKIO
Application Number:
JP2671983A
Publication Date:
September 01, 1984
Filing Date:
February 19, 1983
Export Citation:
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Assignee:
KAWASAKI STEEL CO
International Classes:
B21B23/00; B21B19/02; C23C4/06; C23C4/10; (IPC1-7): C23D5/10
Attorney, Agent or Firm:
Yoshio Kosugi



 
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