Method for preparing miniature mold by powder micro injection forming method

• Main Authors: YI SHANJIE, XU HUI, LIU YE, TONG JINYAN, YIN HAIQING, QU XUANHUI
• Format: Patent
• Language: Chinese; English
• Published: 10.10.2012
• Subjects: CASTING; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; PERFORMING OPERATIONS; POWDER METALLURGY; TRANSPORTING; WORKING METALLIC POWDER

The invention relates to a method for preparing a miniature mold by a powder micro injection forming method. According to the method, high-hardness material powder and ceryl multi-ingredient bonding agents are adopted and mixed to be prepared into uniform feed, the feed is injected on an injection forming machine to obtain an injection blank of the miniature mold with the shape of a miniature part, the injection blank is subjected to hot degreasing and pre-sintering in a degreasing furnace after the solvent degreasing, finally, a test specimen subjected to the pre-sintering is subjected to high-temperature sintering, and the miniature mold with the good shape maintenance effect is obtained. The method provided by the invention can be used for making the miniature mold with complicated shapes in the micrometer dimension, the mold has the characteristics of high hardness, high wear resistance, low thermal conductivity coefficient and the like, an the mass production requirement of the miniature parts can be per