Original scientific paper

Influence of molding and core sands matrix on the effectiveness of the microwaves absorption

M. Stachowicz ; Wroclaw University of Technology,Department of Foundry Engineering and Automation, Wrocław, Poland
J. Mażulis ; Wroclaw University of Technology,Department of Foundry Engineering and Automation, Wrocław, Poland
K. Granat ; Wroclaw University of Technology,Department of Foundry Engineering and Automation, Wrocław, Poland
A. Janus ; Wroclaw University of Technology,Department of Foundry Engineering and Automation, Wrocław, Poland

Abstract

The paper presents the results of applying microwaves to support the drying, redrying and hardening process of molding and core sands made of different types of matrix. In the tests of the microwave heating process a slot line measuring stand was used. Being based on the dielectric parameter measurement it enabled the evaluation of power losses of microwaves penetrating: chromite, magnesite, corundum, zircon and silica molding matrix samples. The survey revealed an impact of humidity and chemical compound of sands on microwave absorption. The study enabled the systematization of knowledge about the influence of selected types of matrix on the effectiveness of the microwave heating process.

Keywords

foundry; molding sand matrixesM; microwave absorption

Hrčak ID:

119540

URI

https://hrcak.srce.hr/119540

Publication date:

1.7.2014.

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