Modeling and simulation of metal injection molding (MIM)

Kang, Tae Gon; Ahn, Seokyoung; Chung, Soo Hyun; Chung, S. T.; Kwon, Young−Soo; Park, S.J.; German, Randall M.

doi:10.1533/9780857096234.2.197

Cited by 6 publications

(1 citation statement)

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“…A number of studies on MIM have been carried out where simulation was utilized to assess the process performance. However, for widespread implementation, a number of objectives must be met, such as a significant amount of data that must be collected in order to generalize the modelling result with all those parameters and their variation [ 15 , 16 ]. Current research on titanium with a relatively new version of Moldflow modelling software showed a good agreement between experimentation and simulation [ 17 ].…”

Section: Introductionmentioning

confidence: 99%

Characterization of Green Part of Steel from Metal Injection Molding: An Analysis Using Moldflow

et al. 2023

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Metal injection molding (MIM) is a quick manufacturing method that produces elaborate and complex items accurately and repeatably. The success of MIM is highly impacted by green part characteristics. This work characterized the green part of steel produced using MIM from feedstock with a powder/binder ratio of 93:7. Several parameters were used, such as dual gates position, injection temperature of ~150 °C, and injection pressure of ~180 MPa. Analysis using Moldflow revealed that the aformentioned parameters were expected to produce a green part with decent value of confidence to fill. However, particular regions exhibited high pressure drop and low-quality prediction, which may lead to the formation of defects. Scanning electron microscopy, as well as three-dimensional examination using X-ray computed tomography, revealed that only small amounts of pores were formed, and critical defects such as crack, surface wrinkle, and binder separation were absent. Hardness analysis revealed that the green part exhibited decent homogeneity. Therefore, the observed results could be useful to establish guidelines for MIM of steel in order to obtain a high quality green part.

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Section: Introductionmentioning

confidence: 99%