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Patent Searching and Data


Title:
MULTI-WOUND STAINLESS STEEL PIPE
Document Type and Number:
Japanese Patent JP2000005813
Kind Code:
A
Abstract:

To make it possible to maintain a brazed layer having ductility by preventing alloying of Cu and Ni.

This stainless steel pipe is made by plastic-deforming the hoop material composed of a stainless steel sheet with brazing filler metal applied on its surface into a pipe, and melting the brazing fiber metal between the walls of the multi-wound pipe, and then cooling the molten brazing filler metal. In this case, the surface is Ni-plated, and a Fe layer is formed on the Ni-plating, and the stainless steel sheet, wherein Cu-plating is applied on the Fe layer, is used as the hoop material, and the Ni layer, Fe layer, and Cu layer existing between the walls of the multi-wound pipe are diffused and spliced.


Inventors:
TAKIGAWA KAZUYOSHI
TAKAHASHI TERUHISA
Application Number:
JP19105398A
Publication Date:
January 11, 2000
Filing Date:
June 22, 1998
Export Citation:
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Assignee:
USUI INTERNATIONAL INDUSTRY
International Classes:
B21C37/06; B21C37/08; B23K1/19; B23K1/20; (IPC1-7): B21C37/06; B21C37/08; B23K1/19; B23K1/20
Attorney, Agent or Firm:
Yoshihisa Oshida