| 摘要 |
PURPOSE:To perform diffusion joining with an inexpensive installation and to reduce cost by evacuating a vessle which contains therein materials to be joined, sandwich plates for pressurizing the same, etc. and has the flange construction adapting itself to expansion or contraction to a vscuum and heating and pressurizing the materials to be joined. CONSTITUTION:A lower snadwich plate 4 is attached in the bottom part of an outside wall 6 having a flange construction adapting itself to the decreased thickness condition of materials 1-3 to be joined, and the material 1-3 are attached thereon. An upper sandwich plate 5 is placed on the materials 1-3, and a pressing bar 11 is lowered thereon. The flange part 7 of the wall 6 is seal-welded C. The wall 6 is welded to the plates 4, 5, thereby forming a hermetic vessel. Such vessel is evacuated to a vacuum through the small hole 12 of the sandwich plate. The materials to be joined are heated to a high temp. by a high frequency induction heating coil 9 and are pressed by the bar 11. |
