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Time and cost assessment of the manufacturing of tooling by metal casting in rapid prototyping sand moulds

Published Article / In this paper the time and cost parameters of tooling manufacturing by metal casting in rapid prototyping sand moulds are assessed and comparison is made with alternative tool making processes such as computer numerical control machining and investment casting (Paris Process). To that end two case studies obtained from local companies were carried out. The tool manufacturing was conducted according to a five steps process chain referred to as Rapid Casting for Tooling (RCT). These steps include CAD modelling, casting simulation, rapid prototyping, metal casting and finishing operations. In particular the Rapid Prototyping (RP) step for producing the sand moulds was achieved with the aid of an EOSINT S 550 Laser Sintering machine and a Spectrum 510 Three Dimensional Printer. The results indicate that RP is the rate determining step and cost driver of the proposed tooling manufacturing technique. In addition it was found that this tool making process is faster but more expensive than machining and investment casting.

Identiferoai:union.ndltd.org:netd.ac.za/oai:union.ndltd.org:cut/oai:ir.cut.ac.za:11462/335
Date January 2011
CreatorsNyembwe, K., De Beer, D., Van der Walt, K., Bhero, S.
ContributorsCentral University of Technology Free State Bloemfontein
PublisherInterim : Interdisciplinary Journal, Vol 10 , Issue 1: Central University of Technology Free State Bloemfontein
Source SetsSouth African National ETD Portal
Languageen_US
Detected LanguageEnglish
TypeArticle
Format516 151 bytes, 1 file, Application/PDF
RightsCentral University of Technology Free State Bloemfontein
RelationInterim : Interdisciplinary Journal;Vol 10 , Issue 1

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