| 摘要 |
PURPOSE:To make it possible to form welded zones which have less cracks and high mechanical strength, by performing an electron beam or laser beam welding after putting copper or a copper alloy between joining surfaces of titanium plate and stainless steel. CONSTITUTION:Copper or copper alloy plate 2 is put on the weld zone of support- ing ring 1 composed of stainless steel and then titanium plate 3 is put on plate 2 (copper or copper alloy plate 2 can also be put on titanium plate 3). Then electron beam or laser beam 4 is irradiated from above. By this, welding metal part 5 is formed. This weld zone is homogeneous in quality and no occurrence of brittle parts and cracks which are found often in joined parts of different materials welded by conventional methods is recognized. |
