MULTI-WOUND STAINLESS STEEL PIPE,申请号JP19980191053-传众专利搜索

MULTI-WOUND STAINLESS STEEL PIPE

申请公布号：JP2000005813(A)

申请号：JP19980191053

申请日期：1998.06.22

申请公布日期：2000.01.11

申请人：

USUI INTERNATL IND CO LTD

发明人：TAKIGAWA KAZUYOSHI;TAKAHASHI TERUHISA

分类号：B21C37/06;B21C37/08;B23K1/19;B23K1/20;(IPC1-7):B21C37/06

主分类号：B21C37/06

摘要：PROBLEM TO BE SOLVED: To make it possible to maintain a brazed layer having ductility by preventing alloying of Cu and Ni. SOLUTION: 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.