| 摘要 |
PURPOSE:To perform the joining of a blank at low temperature and to use it at high temperature by forming a joining layer composed of gold by a heat adhesion between a blank and shank in a tool consisting of the blank and shank. CONSTITUTION:An adhesion reinforcing layer 3 consisting of the metal easy to make a blank and compound is provided on a blank 1, a diffusion preventing layer 4 for preventing the metal elements of the adhesion reinforcing layer 3 from being alloyed with the diffusion to the layer of the gold of a joining member is then provided and a diffusion preventing layer 5 is provided on a shank 2 as well. Gold layers 6, 7 are respectively coated on the surface of the diffusion preventing layer 4 of the blank 1 and the surface of the diffusion preventing layer 5 of the shank 2 and a gold thin piece 8 is inserted between the both. The blank 1 and shank 2 are heated in this state, the gold layers 6, 7, 8 are plastically deformed, the gold is joined on an atomic level and the blank 1 and thank 2 are joined. |
