ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Research on determined alloys produced by metal injection molding has been done for costreduction purposes through the use of powders with bigger particle size. However, regarding feedstockhomogeneity, certain limitations are presented when coarse particles are used. For instance, homogeneitystrongly influences rheological behavior of the feedstock and dimensional control of the sintered part.Therefore, the purpose of this work was to evaluate effectiveness of a modified binder system with theaddition of a surfactant polymer which makes the feedstock more homogeneous. This study was carriedout on a FeNiP alloy currently processed by MIM, where 50%wt of the iron powder was replaced withcourse powder having a particle size distribution of D90 less than 47 ,m. Effectiveness of bindersystems using a Melt Flow Index (MFI) and the behavior of dimensional accuracy at sintered part wereanalyzed. Results showed more feedstock homogeneity and less dimensional deviation when a surfactantagent was used
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/19/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.591-593.169.pdf
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