Formulations, development and characterization techniques of investment casting patterns

Show simple item record Tewo, Robert K. Rutto, Hilary L. Focke, Walter Wilhelm Seodigeng, Tumisang Koech, Lawrence K. 2019-08-02T14:28:12Z 2019-04
dc.description.abstract Conventionally, unfilled wax has been used as a universal pattern material for the investment casting process. With increase in demand for accurate dimensions and complex shapes, various materials have been blended with wax to develop more suitable patterns for investment casting in order to overcome performance limitations exhibited by unfilled wax. The present article initially reviews various investigations on the development of investment casting patterns by exploring pattern materials, type of waxes and their limitations, the effect of filler materials and various additives on unfilled wax, wax blends for pattern materials, plastics and polymers for pattern materials and 3D-printed patterns. The superiority of filled and polymer patterns in terms of dimensional accuracy, pattern strength, surface and flow properties over unfilled wax is also discussed. The present use of 3D patterns following their versatility in the manufacturing sector to revolutionize the investment casting process is also emphasized. Various studies on wax characterization such as physical (surface and dimensions), thermal (thermogravimetric analysis and differential scanning calorimetry), mechanical (thermomechanical analysis, tensile stress testing, dynamic mechanical analysis) and rheological (viscosity and shearing properties) are also discussed. en_ZA
dc.description.department Chemical Engineering en_ZA
dc.description.embargo 2020-04-01
dc.description.librarian am2019 en_ZA
dc.description.sponsorship The Technology Innovation Authority, South Africa. en_ZA
dc.description.uri en_ZA
dc.identifier.citation Tewo, R.K., Rutto, H.L., Focke, W. et al. 2018, 'Formulations, development and characterization techniques of investment casting patterns', Reviews in Chemical Engineering, vol. 35, no. 3, pp. 335-349. en_ZA
dc.identifier.issn 0167-8299 (print)
dc.identifier.issn 2191-0235 (online)
dc.identifier.other 10.1515/revce-2017-0068
dc.language.iso en en_ZA
dc.publisher De Gruyter en_ZA
dc.rights © 2019 Walter de Gruyter en_ZA
dc.subject Filled pattern en_ZA
dc.subject Investment casting pattern en_ZA
dc.subject Semi-filled pattern en_ZA
dc.subject Unfilled wax pattern en_ZA
dc.subject Plastics casting en_ZA
dc.subject Wax pattern en_ZA
dc.subject Thermo-mechanical analysis en_ZA
dc.subject Performance limitations en_ZA
dc.subject Dimensional accuracy en_ZA
dc.subject Characterization techniques en_ZA
dc.subject Thermogravimetric analysis en_ZA
dc.subject Tensile testing en_ZA
dc.subject Filled polymers en_ZA
dc.subject Dynamic mechanical analysis en_ZA
dc.subject Differential scanning calorimetry en_ZA
dc.title Formulations, development and characterization techniques of investment casting patterns en_ZA
dc.type Article en_ZA

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