Postmolding Shrinkage Evaluation of 316L Feedstock Micromolded Parts

The purpose of this paper was to evaluate the shrinkage behavior of a 316L molding feedstock. The methodology adopted a statistical approach (design of experiment) and a standard microshrinkage measurement approach. The statistical approach identified the mold temperatureparallel to the flow direct...

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Bibliographic Details
Published in:Industrial & engineering chemistry research 2014-10, Vol.53 (42), p.16559-16567
Main Authors: Annicchiarico, D, Attia, U. M, Alcock, J. R
Format: Article
Language:English
Subjects:
Austenitic stainless steels
Design of experiments
Feedstock
Heat resistant steels
Industrial engineering
Injection molding
Melt temperature
Molds
Shrinkage
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Summary:The purpose of this paper was to evaluate the shrinkage behavior of a 316L molding feedstock. The methodology adopted a statistical approach (design of experiment) and a standard microshrinkage measurement approach. The statistical approach identified the mold temperatureparallel to the flow directionand the combined effect of the holding and injection pressurenormal to the flow directionas critical factors. In comparison with the polymer on which the feedstock was based, lower shrinkage values and fewer critical factors were observed. In conclusion, the lower shrinkage values were a consequence of the powder loading. The critical factors identified in the present work have found confirmation in the literature, except the absence of melt temperature between feedstock critical factors.
ISSN:0888-5885
1520-5045
DOI:10.1021/ie4040048