publication . Article . 2012

Assessment of surface finish and dimensional accuracy of tools manufactured by metal casting in rapid prototyping sand moulds

Deon De Beer;
Open Access English
  • Published: 01 Nov 2012 Journal: South African Journal of Industrial Engineering (issn: 1012-277X, eissn: 2224-7890, Copyright policy)
  • Publisher: Stellenbosch University
In this paper, an initial assessment of the quality parameters of the surface finish and dimensional accuracy of tools made by metal casting in rapid prototyping (RP) sand moulds is undertaken. A case study from a local tool room, dealing with the manufacturing of an aluminium die for the lost wax process, is employed. Modern techniques, including surface roughness analysis and three dimensional scanning, are used to determine and understand how each manufacturing step influences the final quality of the cast tool. The best surface finish obtained for the cast die had arithmetic average roughness (Ra) and mean average roughness (Rz) respectively equal to 3.23µm ...
free text keywords: Tools, Metal casting, Rapid prototyping, Sand moulds, Industrial engineering. Management engineering, T55.4-60.8
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