Linings based chromite for application in foundry

Abstract

In this work, a possibility to develop new chromite-based refractory linings for casting applications has been examined. Lining composition optimization with the controlled reologic properties was achieved by applying different lining components and by alteration of lining production procedure. As filler, chromite was used. The chromite sample was tested by the following methods: X-ray diffraction analysis, diffraction thermal analysis and SEM. The shape and grain size were analyzed by the program package OZARIA 2.5. It was shown that application of this type of water-alcohol-based lining had a positive influence on surface quality, structural and mechanical properties of the castings of Fe-C alloys obtained by casting into sand molds, according to the method of expandable patterns (Lost foam casting process).