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Direct production of investment casting shells using SLS

: Klocke, F.; Freyer, C.

Fraunhofer-Allianz Rapid Prototyping:
uRapid 1999 - User's Conference on Rapid Prototyping & Manufacturing : London, 2nd - 4th June 1999
London, 1999
User's Conference on Rapid Prototyping and Manufacturing (uRapid) <1999, London>
Conference Paper
Fraunhofer IPT ()
Rapid Prototyping; ceramic; selective laser sintering; metal prototype; investment casting; SLS

Selective Laser Sintering (SLS) of zirconium silicate as a ceramic material used for investment casting shells and cores is an attractive alternative to the conventional, time-consuming way of producing these shells from a wax master. As opposed to about 10 days with the conventional method, the preparation of the data, the laser sintering of the shell and the casting is done in about two days using the new approach. This paper will present current process results concerning laser sintering of shells made from zirconium silicate and explain the related potentials and benefits.