Suitability of layer manufacturing technologies for rapid tooling development in investment casting of light metals
Published Article === Rapid tooling (RT) in the context of this research presents the possibility of improving the traditional investment casting process by shortening lead times while still maintaining affordable costs and required quality. Various rapid prototyping processes are available that can...
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Journal for New Generation Sciences, Vol 8, Issue 2: Central University of Technology, Free State, Bloemfontein
2015
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Online Access: | http://hdl.handle.net/11462/558 |
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ndltd-netd.ac.za-oai-union.ndltd.org-cut-oai-ir.cut.ac.za-11462-5582016-03-16T03:59:04Z Suitability of layer manufacturing technologies for rapid tooling development in investment casting of light metals Dimitrov, D. Hugo, P.A. Deez, B. Central University of Technology, Free State, Bloemfontein Investment casting Rapid prototyping Rapid tooling Layer manufacturing Published Article Rapid tooling (RT) in the context of this research presents the possibility of improving the traditional investment casting process by shortening lead times while still maintaining affordable costs and required quality. Various rapid prototyping processes are available that can be used to create direct metal, polymer or wooden dies for this casting technology. This paper presents results gained in an AMTS project, focusing on RT development for investment casting of light metals. One of the most widely used layer manufacturing processes available in South Africa is selective laser sintering. A machine produced by the German manufacturer EOS (process known as laser sintering) utilising this technology was selected for the study. Two of the materials that are suitable for rapid die making are used, which in tum reflects different mechanical properties and process economics. A standard benchmark part was used as a study base. Two dies were built, one in alumide and one in polyamide. A comprehensive measurement programme was conducted, followed by an appropriate statistical analysis and evaluation regarding accuracy and surface finish. A number of wax patterns were produced. The best wax patterns from each die were selected and evaluated. The subsequently produced castings in AI, Mg and TI were further examined and evaluated. Various issues concerning the reinforcement, wax injection, pattern removal, accuracy and surface finish of the dies are discussed in the paper. The research concludes that rapid tooling techniques can be successfully used for creating accurate dies in order to shorten lead times in the investment casting process chain. 2015-09-29T13:22:21Z 2015-09-29T13:22:21Z 2010 2010 Article 16844998 http://hdl.handle.net/11462/558 en_US Journal for New Generation Sciences;Vol 8, Issue 2 Central University of Technology, Free State, Bloemfontein 3 398 966 bytes, 1 file Application/PDF Journal for New Generation Sciences, Vol 8, Issue 2: Central University of Technology, Free State, Bloemfontein |
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Investment casting Rapid prototyping Rapid tooling Layer manufacturing |
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Investment casting Rapid prototyping Rapid tooling Layer manufacturing Dimitrov, D. Hugo, P.A. Deez, B. Suitability of layer manufacturing technologies for rapid tooling development in investment casting of light metals |
description |
Published Article === Rapid tooling (RT) in the context of this research presents the possibility of improving the traditional investment casting process by shortening lead times while still maintaining affordable costs and required quality. Various rapid prototyping processes are available that can be used to create direct metal, polymer or wooden dies for this casting technology. This paper presents results gained in an AMTS project, focusing on RT development for investment casting of light metals. One of the most widely used layer manufacturing processes available in South Africa is selective laser sintering. A machine produced by the German manufacturer EOS (process known as laser sintering) utilising this technology was selected for the study. Two of the materials that are suitable for rapid die making are used, which in tum reflects different mechanical properties and process economics. A standard benchmark part was used as a study base. Two dies were built, one in alumide and one in polyamide. A comprehensive measurement programme was conducted, followed by an appropriate statistical analysis and evaluation regarding accuracy and surface finish. A number of wax patterns were produced. The best wax patterns from each die were selected and evaluated. The subsequently produced castings in AI, Mg and TI were further examined and evaluated.
Various issues concerning the reinforcement, wax injection, pattern removal, accuracy and surface finish of the dies are discussed in the paper. The research concludes that rapid tooling techniques can be successfully used for creating accurate dies in order to shorten lead times in the investment casting process chain. |
author2 |
Central University of Technology, Free State, Bloemfontein |
author_facet |
Central University of Technology, Free State, Bloemfontein Dimitrov, D. Hugo, P.A. Deez, B. |
author |
Dimitrov, D. Hugo, P.A. Deez, B. |
author_sort |
Dimitrov, D. |
title |
Suitability of layer manufacturing technologies for rapid tooling development in investment casting of light metals |
title_short |
Suitability of layer manufacturing technologies for rapid tooling development in investment casting of light metals |
title_full |
Suitability of layer manufacturing technologies for rapid tooling development in investment casting of light metals |
title_fullStr |
Suitability of layer manufacturing technologies for rapid tooling development in investment casting of light metals |
title_full_unstemmed |
Suitability of layer manufacturing technologies for rapid tooling development in investment casting of light metals |
title_sort |
suitability of layer manufacturing technologies for rapid tooling development in investment casting of light metals |
publisher |
Journal for New Generation Sciences, Vol 8, Issue 2: Central University of Technology, Free State, Bloemfontein |
publishDate |
2015 |
url |
http://hdl.handle.net/11462/558 |
work_keys_str_mv |
AT dimitrovd suitabilityoflayermanufacturingtechnologiesforrapidtoolingdevelopmentininvestmentcastingoflightmetals AT hugopa suitabilityoflayermanufacturingtechnologiesforrapidtoolingdevelopmentininvestmentcastingoflightmetals AT deezb suitabilityoflayermanufacturingtechnologiesforrapidtoolingdevelopmentininvestmentcastingoflightmetals |
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