机构:
Sch. of Indust./Mfg. Science, Cranfield University, Cranfield, United KingdomSch. of Indust./Mfg. Science, Cranfield University, Cranfield, United Kingdom
Stephenson, D.J.
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机构:
[1] Sch. of Indust./Mfg. Science, Cranfield University, Cranfield, United Kingdom
Powder co-injection moulding (PCIM), is a novel technique for the surface engineering of PIM components. The process uses two moulding feedstocks which are injected into a mould sequentially, so that one feedstock forms the surface layer of the component and the other forms the core. Work to date has shown that the injection moulding time and the viscosity ratio of the two feedstock materials are critical in determining the surface layer profile. This has been confirmed through finite element modelling predictions of the skin layer thickness distribution which correlate well with experimental observations.