Effect of processing variables on warping behaviours of injection-moulded ceramics

Wenjea J. Tseng*, Dean-Mo LIu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

The warpage behaviours of injection-moulded ceramics were investigated through a designed, factorial experiment. The warpage was found proportional to the mould temperature, and was reduced as a prolonged cooling time was concurrently applied. The residual stresses arising from the nonuniform temperature distribution during the cooling stage of the moulding process were suspected as the main cause, and a model experiment by artificially introducing a differential cooling rate across the moulding thickness confirmed the hypothesis. The differences in warping behaviours between the injection-moulded ceramics and plastics, as well as the implication of the moulded microstructure to the warpage, are discussed.

Original languageEnglish
Pages (from-to)125-133
Number of pages9
JournalCeramics International
Volume24
Issue number2
DOIs
StatePublished - 1 Jan 1998

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