| Summary: | 碩士 === 國立臺灣科技大學 === 機械工程研究所 === 83 === Presently MIM is a hotest topic in P/M industry, because the
process can produce high density of complicate shaped
parts. However, MIM has a major disadvantage, namely the
debinding time is too long, and also has a limitation that
fine powder must be used. In this study, plaster mould will be
applied in the com- bined work of loose sintering and CIP
process. If fine powders (3.8μm) are used in this process,
the aim is to eliminate the mixing, granulating and debinding
steps and time reguired in the MIM process. If 150μm powder
are used, it is intended to break the limitation of fine
powder in the MIM process. In conclusion: (1).plaster mould can
be used in loose sintering. (2).CIP can not show it's
contribution on densification of loose sintering parts
clearly. (3).150μm powders does not be loose sintering
easily, but it can be easy in air at 500℃ and be
reduced densification sintering completed in hydrogen.
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