Sand, die and investment cast parts via the SLS selective laser sintering process

Simon van de Crommert; Sandra Seitz; Klaus K. Esser; Kevin McAlea

doi:10.1117/12.281306

25 September 1997 Sand, die and investment cast parts via the SLS selective laser sintering process

Simon van de Crommert, Sandra Seitz, Klaus K. Esser, Kevin McAlea

Proceedings Volume 3102, Rapid Prototyping and Flexible Manufacturing; (1997) https://doi.org/10.1117/12.281306
Event: Lasers and Optics in Manufacturing III, 1997, Munich, Germany

Abstract

Complex three-dimensional parts can be manufactured directly from CAD data using rapid prototyping processes. SLS selective laser sintering is a rapid prototyping process developed at the University of Texas at Austin and commercialized by DTM Corporation. SLS parts are constructed layer by layer from powdered materials using laser energy to melt CAD specified cross sections. Polymer, metal, and ceramic powders are all potential candidate materials for this process. In this paper the fabrication of complex metal parts rapidly using the investment, die and sand casting technologies in conjunction with the selective laser sintering process are being explained and discussed. TrueForm and polycarbonate were used for investment casting, while RapidSteel metal mould inserts were used for the die casting trials. Two different SandForm materials, zircon and silica sand, are currently available for the direct production of sand moulds and cores. The flexible and versatile selective laser sintering process all these materials on one single sinterstation. Material can be changed fast and easily between two different builds.

Citation Download Citation

Simon van de Crommert, Sandra Seitz, Klaus K. Esser, and Kevin McAlea "Sand, die and investment cast parts via the SLS selective laser sintering process", Proc. SPIE 3102, Rapid Prototyping and Flexible Manufacturing, (25 September 1997); https://doi.org/10.1117/12.281306

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