Details

Title

The Influence of Sand Grains Properties on Electrical Properties of Moulding Sand with Inorganic Binder

Journal title

Archives of Foundry Engineering

Yearbook

2015

Numer

No 3

Publication authors

Keywords

Innovative foundry technologies and materials ; Microwaves ; Moulding sand ; Sand grains ; Water glass

Divisions of PAS

Nauki Techniczne

Description

Archives of Foundry Engineering continues the publishing activity started by Foundry Commission of the Polish Academy of Sciences (PAN) in Katowice in 1978. The initiator of it was the first Chairman Professor Dr Eng. Wacław Sakwa – Corresponding Member of PAN, Honorary Doctor of Czestochowa University of Technology and Silesian University of Technology. This periodical first name was „Solidification of Metals and Alloys” , and made possible to publish the results of works achieved in the field of the Basic Problems Research Cooperation. The subject of publications was related to the title of the periodical and concerned widely understand problems of metals and alloys crystallization in a casting mold. In 1978-2000 the 44 issues have been published. Since 2001 the Foundry Commission has had patronage of the annually published “Archives of Foundry” and since 2007 quarterly published “Archives of Foundry Engineering”. Thematic scope includes scientific issues of foundry industry:

  • Theoretical Aspects of Casting Processes,
  • Innovative Foundry Technologies and Materials,
  • Foundry Processes Computer Aiding,
  • Mechanization, Automation and Robotics in Foundry,
  • Transport Systems in Foundry,
  • Castings Quality Management,
  • Environmental Protection.

Abstract

The paper presents the results of basic research on the influence of the properties of sand grains on electrical properties of water glass

moulding sands. It shows electrical properties of the main component – sand grains, crucial to the kinetics of moulding sands heating, such

as permittivity εr and loss factor tgδ. Measurements were carried out with the use of the perturbation method for silica, chromite and

olivine sands of different mineral, chemical composition and particle size distribution, as well as for moulding sands with water glass

grade 145. Analysis of the results of measurements of electrical properties shows that all moulding sands are characterized by a similar

permittivity εr and loss factor tgδ. It was found that the electrical properties and the quantity and quality of other components may have

a decisive influence on the effectiveness and efficiency of the microwave heating of moulding sands with sand grains. In determining the

ability to efficiently absorb the microwave radiation for mixtures which moulding sands are, the impact of all components influencing their

individual technological parameters should be taken into account.

Publisher

The Katowice Branch of the Polish Academy of Sciences

Date

2015[2015.01.01 AD - 2015.12.31 AD]

Type

Artykuły / Articles

Identifier

ISSN 2299-2944

DOI

10.1515/afe-2015-0057

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