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Titolo:
Analysis of process of metal injection molding of stainless steel powder using a permeable die
Autore:
Maeda, Y; Yamada, Y; Hanai, T; Nomura, H;
Indirizzi:
Nagoya Univ, Grad Sch Engn, Dept Mat Proc Engn, Nagoya, Aichi 4648603, Japan Nagoya Univ Nagoya Aichi Japan 4648603 Engn, Nagoya, Aichi 4648603, Japan
Titolo Testata:
JOURNAL OF THE JAPAN INSTITUTE OF METALS
fascicolo: 4, volume: 65, anno: 2001,
pagine: 266 - 272
SICI:
0021-4876(200104)65:4<266:AOPOMI>2.0.ZU;2-L
Fonte:
ISI
Lingua:
JPN
Keywords:
metal injection molding; stainless steel powder; backpressure; permeable die; Flow Analysis Network method; slurry pressure;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
16
Recensione:
Indirizzi per estratti:
Citazione:
Y. Maeda et al., "Analysis of process of metal injection molding of stainless steel powder using a permeable die", J JPN METAL, 65(4), 2001, pp. 266-272

Abstract

In order to obtain sound green compacts, which are necessary for producingquality sintered products by metal injection molding (MIM), it is important to control the filling behavior of the slurry in the mold cavity. Pressurized air, which exists near the final filled-up area, exerts a large effecton both the now dynamics of the slurry and the properties of the green compact. A permeable die has a lot of microscopic pore channels in the mold cavity. Use of a permeable die is a useful technique to enhance the slurry flowability. In this study, the now behavior and the properties of green and sintered compacts of stainless steel were investigated in several injectionexperiments using both ordinary and permeable dies. A numerical simulationwas also conducted. The results showed that the molding speed and the quality of the green and sintered compacts are better when the permeable die isemployed rather than the ordinary die. Furthermore, the backpressure of the air and the volume of the exhausted air were calculated by the FAN methodcombined with backpressure analysis. The results of these analyses will serve as useful information for designing compacts of uniform quality with nodefects.

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Documento generato il 02/04/20 alle ore 09:53:21