Deformation Control of Large Sized MIM Parts by Changing the Powder Size Distribution

Osada, Toshiko; Sakurai, Ryosuke; Hashikawa, Ryuichi; Tsumori, Fujio; Miura, Hideshi; Toda, Kinji

doi:10.2497/jjspm.62.108

Cited by 2 publications

(1 citation statement)

References 8 publications

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“…In order to determine the rheological behavior of feedstocks, spiral flow test was performed. In this test, F50 which showed the highest relative density in a previous study 7) and M50 and L100 which were comparison with F50 were used. Ryuichi HASHIKAWA, Toshiko OSADA, Kentaro KUDO, Fujio TSUMORI and Hideshi MIURA for 316L stainless steel) which is relatively larger size compare to typical MIM parts.…”

Section: Feedstocks Characteristicsmentioning

confidence: 99%

Control the Distortion of the Large and Complex Shaped Parts by the Metal Injection Molding Process

Hashikawa

Osada

Kudo

et al. 2016

J. Jpn. Soc. Powder Powder Metallurgy

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Metal Injection Molding (MIM) is an effective way to manufacture small components with low cost and high precision. However, in the case of large components, it becomes difficult to control the distortion and cracking because of the big shrinkage during debinding and sintering process. Therefore it is important to optimize the condition of each process to reduce the distortion of MIM compacts. Moreover, powder size is also one of the most important parameters. The small particle powder shows high shrinkage and high density as compared to large particle powder during sintering process. In this study, blending of both powders was conducted and the influence of powder size distribution on the distortion of complex shaped parts was evaluated. A coordinate measuring machine, which is a 3D device for measuring the physical geometrical characteristics of an object, was used to measure the distortion. Finally, through controlling the distribution of particle size, distortion of the comparatively large and complex shaped MIM compacts was successfully restrained.

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Section: Feedstocks Characteristicsmentioning

confidence: 99%

Control the Distortion of the Large and Complex Shaped Parts by the Metal Injection Molding Process

Hashikawa

Osada

Kudo

et al. 2016

J. Jpn. Soc. Powder Powder Metallurgy

Self Cite

View full text Add to dashboard Cite

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Mechanical Properties and Deformation Behavior of Metal Injection Molded Products with Cellulose Nanofiber

Osada

KOBAYASHI

2023

J. Jpn. Soc. Powder Powder Metallurgy

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Metal Injection Molding (MIM) process is suitable for fabricating small and complex shaped metal parts with high production volume. In this study, in order to improve the MIM process, cellulose nanofibers (CNF) were focused. There are problems such as deformation during debinding and sintering due to the addition of a large amount of binder. On the other hand, the strength of the green compact decreased with decreasing binder contents. In this study, cellulose nanofibers were added with a binder during mixing in order to improve the handling of green compacts, and decrease the deformation during debinding and sintering. The effects of CNF contents on the mechanical properties were investigated. It was clarified that CNF is effective in improving the handleability of the debound compacts and suppressing deformation during sintering.

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Deformation Control of Large Sized MIM Parts by Changing the Powder Size Distribution

Cited by 2 publications

References 8 publications

Control the Distortion of the Large and Complex Shaped Parts by the Metal Injection Molding Process

Control the Distortion of the Large and Complex Shaped Parts by the Metal Injection Molding Process

Mechanical Properties and Deformation Behavior of Metal Injection Molded Products with Cellulose Nanofiber

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