Affiliation:
1. School of Materials Science & Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea
2. Kyerim Metal Co., Ltd., Chilgok 39910, Republic of Korea
Abstract
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.
Funder
National Project, Republic of Korea
Subject
General Materials Science
Reference37 articles.
1. Fabrication of Metal Matrix Composites by Metal Injection Molding-A Review;Ye;J. Mater. Process. Technol.,2008
2. Singh, G., Missiaen, J.M., Bouvard, D., and Chaix, J.M. (2021). Additive Manufacturing of 17–4 PH Steel Using Metal Injection Molding Feedstock: Analysis of 3D Extrusion Printing, Debinding and Sintering. Addit. Manuf., 47.
3. A Review of Biocompatible Metal Injection Moulding Process Parameters for Biomedical Applications;Hamidi;Mater. Sci. Eng. C,2017
4. Porous Titanium Implants Fabricated by Metal Injection Molding;Chen;Trans. Nonferrous Met. Soc. China,2009
5. Progress in Titanium Metal Powder Injection Molding;German;Materials,2013
Cited by
2 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献