| 摘要 |
PURPOSE:To prevent deformation and crack of a sintered compact by charging a core for reinforcing green body into a compacting die, integrally taking out the core and the green body after executing injection-compacting and integrally executing debinder treatment and sintering treatment. CONSTITUTION:Organic binder (e.g. acrylic resin) is added to raw material powder (e.g. iron-nickel alloy) to make material for injection-compacting. The core 16 having a part of outer shape of the compacted product, is fitted and the dies are clamped to prepare the die 1 for injection-compacting, forming cavity 22 for compacted product. The above material for compacting is injected into this die 1 to integrally compact the above core 10 and the green body 25. Successively, by separating a movable die 3, the dies are opened, and by projecting the above core 16, the integrally compacted product is taken out. Further, after executing the debinder and the sintering treatments to the compacted product cut at gate position 23, the core 16 is separated. |
