TY - GEN
T1 - Defect detection of metal injection modeling by micro computed tomography
AU - Huang, Wei Yun
AU - Chen, Chang Da
AU - Chen, Yen Nien
AU - Shih, Wei Jen
AU - Chang, Chih Han
N1 - Copyright:
Copyright 2013 Elsevier B.V., All rights reserved.
PY - 2012
Y1 - 2012
N2 - 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.
AB - 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.
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U2 - 10.4028/www.scientific.net/AMM.229-231.1445
DO - 10.4028/www.scientific.net/AMM.229-231.1445
M3 - Conference contribution
AN - SCOPUS:84871384597
SN - 9783037855102
T3 - Applied Mechanics and Materials
SP - 1445
EP - 1448
BT - Mechanical and Electrical Technology IV
T2 - 4th International Conference on Mechanical and Electrical Technology, ICMET 2012
Y2 - 24 July 2012 through 26 July 2012
ER -