METHOD FOR SEALING WORKING PART OF HEAT-RESISTANT MEMBER

PROBLEM TO BE SOLVED: To solve problems that sealing of a working part of a heat-resistant member by a melt-welding method is difficult because weldability of the heat-resistant material is not good, the disposition or a pressing method of an insert is sometimes difficult according to the position of a hole or a groove in the member in a diffusion-joining method of a non-melt-welding method, and joining in a semi-molten state is very difficult because the heat-resistant member has the high strength at high temperature in a case of a friction welding method. SOLUTION: The thin layer of an insert is formed on either the working part of a heat-resistant member which is shaped by the pre-treatment, or the sealing member of substantially the same material. Then, the heat-resistant member and the sealing member are disposed on the working part via the insert. The working part of the heat-resistant member and the sealing member are joined with each other by a joining means as a primary treatment, and further joined firmly by performing the heating as a secondary treatment. COPYRIGHT: (C)2005,JPO&NCIPI