Defect detection of metal injection modeling by micro computed tomography

Wei Yun Huang, Chang Da Chen, Yen Nien Chen, Wei Jen Shih, Chih Han Chang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

Metal injection molding (MIM) is a combination of metal powder and injection molding technology. The main advantage of this technology for material parts with small and complex shape is to manufacture cost-effective and high-volume products. The main processing steps include mixing, injection molding, debinding, sintering, and hot isostatic pressing (HIP) in order to reduce internal porosity of metals, then to improve mechanical properties. This study is based on non-destructive testing method to determine the possible defect inside the internal structure of the MIM parts. Three types of parts with and without HIP were evaluated investigated in this study. The micro computed tomography (Micro-CT) is used to scan these parts. Based the reconstructed section images from CT, the defects can be identified. It showed that with HIP the much of detects could be reduced. To conclude, Micro CT could be used to detect, in a non-destructive way, the internal detect within MIM parts can be found out in the micro-CT images, so that the manufacturing process could be modified to improve the quality of MIM parts.

Original languageEnglish
Title of host publicationMechanical and Electrical Technology IV
Pages1445-1448
Number of pages4
DOIs
Publication statusPublished - 2012
Event4th International Conference on Mechanical and Electrical Technology, ICMET 2012 - Kuala Lumpur, Malaysia
Duration: 2012 Jul 242012 Jul 26

Publication series

NameApplied Mechanics and Materials
Volume229-231
ISSN (Print)1660-9336
ISSN (Electronic)1662-7482

Other

Other4th International Conference on Mechanical and Electrical Technology, ICMET 2012
CountryMalaysia
CityKuala Lumpur
Period12-07-2412-07-26

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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