| 摘要 |
PURPOSE: To shorten molding time and sintering time and to enhance the thermal efficiency and the quality of products by at the time of sintering connecting and interlocking a press molding machine and a heating and annealing furnace and sintering compacts to be sintered right after molding at the time of producing a hard alloy by powder metallurgy. CONSTITUTION: The raw material powder compounded to a prescribed compsn. is added and mixed with a lubricant and an org. binder and is ground and the powder mixture formed in such a manner is packed into the metal molds and is press molded by the press molding machine 1 at the time of producing the hard allay consisting of a sintered hard alloy, cermet or ceramics. Next, the compacts 3 to be sintered after the molding are immediately sent by a feeding mechanism 2 and by utilizing light energy to the sintering furnace 4 which is divided to an org. lubricant removing section 5 and a sintering section 6. The compacts 3 to be sintered are subjected to removal of the lubricant and the org. binder at a prescribed temp. by a heater 9 in the removing section 5 and are sent to the sintering section 6, where the compacts are sintered by a light source section 10 having good thermal efficiency. As a result, the productivity is improved and since the sintering conditions are variable by every work, the quality is improved. |
