Jetting in metal injection moulding of 316L stainless steel
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Date
2005
Journal Title
Journal ISSN
Volume Title
Publisher
Maney Publishing
Technická Univerzita v Liberci
Technical university of Liberec, Czech Republic
Technická Univerzita v Liberci
Technical university of Liberec, Czech Republic
Abstract
The jetting phenomenon in metal injection moulding (MIM) has been investigated. To date, the behaviour of the polymer metallic powder melting during filling stage that causes problems in choosing process parameters has not been adequately described in the literature, the manner of the melt flows inside a die cavity is not easy to predict. In order to better understand the process, an experimental mould with replaceable inserts including a window glass section was designed and manufactured in our lab. The glass window allows monitoring the manner of the melt flows in real time and permit to record it with a change couple device (CCD) camera. In this paper, the injection moulding experiments have been performed to test the filling process and occurrence of jetting. The experiments indicate that there is high probability of conventional jetting depending on process parameters. Various gate cross sections and runner length die cavity were employed as variable parameters in order to investigate their influence on jetting phenomenon. The processing regimes were kept the same during all the experiments. © 2005 Institute of Materials, Minerals and Mining. Published by Maney on behalf of the Institute.
Description
Subject(s)
metal injection moulding, jetting, transparent mould
Citation
ISSN
0032-5899