The effects of metal particle size and distributions on dimensional accuracy for micro parts in micro metal injection molding |
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Authors: | Kenji Okubo Shigeo Tanaka Hiroshi Ito |
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Affiliation: | (1) Taisei Kogyo Co., Ltd, 26-1, Ikeda-Kitamachi Neyagawa, Osaka 572-0073, Japan;(2) Yamagata University, 4-3-16, Jonan Yonezawa, Yamagata 992-8510, Japan |
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Abstract: | This study aims to develop processing techniques to improve dimensional accuracy of micro-size parts produced by micro metal injection molding (μ-MIM). Micro dumbbell specimens were molded by a micro injection molding machine, which can monitor the cavity pressure in injection molding process. The effects of particle size and distribution of metal powder on dimensional accuracy of micro dumbbell specimens at both grip parts were investigated. As the results, it is confirmed that the powder properties and sintering conditions to improve the dimensional accuracy of micro-MIM parts. |
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