Experimental studies on the accuracy of wax patterns used in investment casting

Hock, T. S., Trevor, S., Christodoulou, P. and Yarlagadda, P. K. D. V. (2003) Experimental studies on the accuracy of wax patterns used in investment casting. Proceedings of The Institution of Mechanical Engineers Part B-journal of Engineering Manufacture, 217 2: 285-289. doi:10.1243/095440503321148902


Author Hock, T. S.
Trevor, S.
Christodoulou, P.
Yarlagadda, P. K. D. V.
Title Experimental studies on the accuracy of wax patterns used in investment casting
Journal name Proceedings of The Institution of Mechanical Engineers Part B-journal of Engineering Manufacture   Check publisher's open access policy
ISSN 0954-4054
Publication date 2003
Sub-type Article (original research)
DOI 10.1243/095440503321148902
Volume 217
Issue 2
Start page 285
End page 289
Total pages 5
Place of publication England
Publisher Professional Engineering Publishing Ltd
Collection year 2003
Language eng
Subject C1
291400 Materials Engineering
671004 Castings
Abstract Investment casting is often used to produce fully functional prototype components from sacrificial patterns. These patterns (prototypes) may be made using specialized rapid prototyping techniques such as stereolithography or three-dimensional printing. When multiple functional prototypes are required, interim tools for making wax patterns are employed. The objective of this research work was to determine the precision and accuracy of wax patterns produced using several prototype tools. Linear contraction was used to determine the accuracy as a function of the wax injection parameters used in low-pressure injection moulding. Wax patterns were produced using polyurethane and silicone rubber tools. It has been shown that the accuracy of patterns from both tools is similar. However, silicone tools produce patterns with much higher contraction than those produced by polyurethane tools. Unconstrained patterns dimensions contracted as much as 3.44 +/- 0.40 per cent and 1.70 +/- 0.60 per cent for silicone and polyurethane tools respectively. The constrained dimensions contracted by 2.20 +/- 0.20 per cent in the case of silicone tools and 1.40 +/- 0.20 per cent in the case of polyurethane tools.
Keyword Engineering, Manufacturing
Engineering, Mechanical
Investment Casting
Wax Pattern
Dimensional Accuracy
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
2004 Higher Education Research Data Collection
 
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Citation counts: TR Web of Science Citation Count  Cited 9 times in Thomson Reuters Web of Science Article | Citations
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Created: Wed, 15 Aug 2007, 02:09:06 EST