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The solidification of large sections in ceramic injection molding: Part ii. modulated pressure molding

Zhang, T; Evans, JRG; (1993) The solidification of large sections in ceramic injection molding: Part ii. modulated pressure molding. Journal of Materials Research , 8 (2) pp. 345-351. 10.1557/JMR.1993.0345.

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Abstract

Cylindrical moldings of 20 and 40 mm diameter were injection molded with the application of modulated hold pressure using a well-characterized alumina-polypropylene suspension. The effect of frequency on sprue solidification was explored. For the smaller moldings, very little extension to sprue solidification time was obtained with pressures up to 140 MPa, and this is attributed to the low reciprocating volume flow. For the larger moldings, pressures of 98 MPa were sufficient to produce moldings with neither voids nor cracks, and the sprue solidification time corresponded to the time needed for solidification of the molding. The use of higher pressures resulted in internal residual stresses which were qualitatively detected by the defomation on annealing of polished diametral sections. © 1993, Materials Research Society. All rights reserved.

Type: Article
Title: The solidification of large sections in ceramic injection molding: Part ii. modulated pressure molding
DOI: 10.1557/JMR.1993.0345
UCL classification: UCL > School of BEAMS
UCL > School of BEAMS > Faculty of Maths and Physical Sciences
URI: http://discovery.ucl.ac.uk/id/eprint/730874
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