| 摘要 |
PURPOSE:To regenerate and reutilize used mold members which are heretofore discarded by welding backing plates to the four corners of the mold members of which the copper (alloy) clad material on ferrous base plates is worn, disposing fresh copper (alloy) thereon and subjecting the same to diffusion welding. CONSTITUTION:The copper (alloy) 2 existing on the surface of the respective ferrous base plate materials 1 of the mold members A, B and C is removed entirely or except part thereof. The backing plates 4 of the box shape made of the same material as the materials 1 are partially attached and welded 5 to the four corners of such members A, B and C. The members A and B as well as C and C as a couple are diffusion-welded. The fresh copper (alloy) 6 and 7 are then disposed on the tip and bottom via an intermediate insertion plate 8 coated with a release agent 9 and further any of the members A, B, C is disposed thereon. The assembly is pressurized by a pressurizing body 10 in a vacuum or inert gas to join securely the copper (alloy) 2 and the fresh copper (alloy) 6, 7 and thereafter the copper (alloy) 6, 7 are hardened by a heat treatment. The plates 4 are removed and the copper (alloy) 6, 7 are finished by which the regeneration of the mold is completed. |
