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Use of a heated sprue in the injection moulding of large ceramic sections

Zhang, T; Evans, JRG; (1993) Use of a heated sprue in the injection moulding of large ceramic sections. British Ceramic Transactions , 92 (4) pp. 146-151.

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Abstract

Large cylindrical mouldings were prepared from a 56 vol.-% alumina suspension in a polypropylene-based organic vehicle. An axial centre-gated cavity was used so that the sprue, which was capable of being heated and water cooled, entered the thickest section directly. The moulding conditions needed to prevent defects at the solidification stage are compared with the conventional moulding process. Void-free mouldings were made at very low hold pressures. Certain moulding conditions produced cracks which were consistently distinct from those found in conventional moulding.

Type: Article
Title: Use of a heated sprue in the injection moulding of large ceramic sections
UCL classification: UCL > School of BEAMS
UCL > School of BEAMS > Faculty of Maths and Physical Sciences
URI: http://discovery.ucl.ac.uk/id/eprint/730873
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