金属光造形金型による薄肉低圧射出成形

抄録

Using milling combined laser metal sintering, porous surface has been fabricated on the thin walled cavity closed by the surrounded thick cavity in the injection mold. Resin flows into the cavity of 2mm thick at first around the thin part and then flows into the thin cavity of 0.2mm thick with 11mm square by packing pressure. The packing pressure for filling the thin part was compared among laser metal sintered mold with or without porous surface, steel mold with or without porous block. The result shows that packing pressure for filling the thin part in the sintered mold is low even without porous surface because of the low thermal conductivity of the sintered material. The packing pressure to fill the thin part in the sintered mold with porous surface is lower than that in the steel mold with porous block. Pressure applied on the mold surface in the sintered mold is higher than that in the steel mold under the same packing pressure.