Heat-insulating moulding sand with the glycol addition
Journal Title: Archiwum Odlewnictwa - Year 2011, Vol 11, Issue 3
Abstract
The article presents a selection of the composition and basic properties of highly insulating moulding sand. Sandmix is designed especially for thin-walled castings with high tendency to oxidation - particularly in spatial cores skeleton castings. An example of matrix of sandmix are aluminosilicate microspheres and the binder is bentonite plasticized with water and polyglycol. By using the microspheres high insulation, high mechanical strength and low specific weight core sand was obtained. Addition of polyglycol improved the mechanical properties, deformation characteristics, surface smoothness and reduced friability of sandmix.
Authors and Affiliations
M. Cholewa, T. Szuter
Keywords
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