Abstract
Powder loading is one of the most critical factors which has important influence on metal injection molding processes. Using the gas atomized spherical 17-4 PH stainless steel powder and the binder of 65% PW + 30% EVA + 5% SA, four kinds of feedstocks were prepared at the powder loading of 60, 64, 68 and 72%, respectively. The effects of the powder loading on the feedstock rheological properties, the compact distortion and tolerance control as well as mechanical properties and microstructures were investigated. It is proved that 68% powder loading is the optimal one. The feedstock with 68% powder loading can be injection molded with a comparatively low viscosity on a relatively wide temperature range, and it is best to get quick powder re-packing and binder molecule orientation during injection molding. From the standpoint of compact shape retention and dimension tolerance control, the optimal powder loading of 68% is also the best. Furthermore, the compact of 68% powder loading is easy to get sinter densification and has superior mechanical properties and microstructures.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
