Gutko Yu.I., Voytenko V.V. Advanced Materials for Manufacturing Disposable and Reusable Core Boxes

DOI: 10.18503/1995-2732-2021-19-3-54-60

Abstract

Problem Statement. The foundry shows a constant trend in a search for new core-making technologies and development of existing ones characterized by higher safety and environmental friendliness. There are the following advanced core manufacturing technologies: Cold-Box-Amin, Epoxy-SO2, and Resol-CO2. Nevertheless, a sodium silicate core-making process, attributed to the safest and the most eco-friendly technologies, has significant reserves for its advanced development, it is possible to increase the complexity of mold cores and performance of the core-making process. Competitiveness of the sodium silicate core-making process can be enhanced by saving sodium silicate and ferrochromium slag in a core mixture to increase the breakdown property of mold cores from castings, but this reduces their operational and maximum strength. This research and technical issue can be solved by choosing the core box material, considering its physical and mechanical properties, and selecting the appropriate core mixture composition. Objective. The research is aimed at studying and choosing materials for manufacturing core boxes used in the sodium silicate core-making technology. Methods Applied. The comparative analysis of the mechanical properties of the core box materials in the sodium silicate core-making technology. Originality. The paper describes the experimental results of the use of various core box materials in the sodium silicate core-making technology and provides the recommendations on the use of these materials. Results. The authors determined force of extraction for a sodium silicate core from a core box for various core box materials. They measured an operational surface roughness class of the effective area of the core boxes made of various materials and determined its effect on the required value of the operational structural robustness of a mold core. An average wear of a core box effective area is determined for various core box materials. Practical Relevance. The paper contains the recommendations on the use of various core box materials for the sodium silicate core-making technology and a core mixture composition depending on a core box material.

Keywords

Sodium silicate mold core, core mixture, core box, wood, steel, polyurethane, polyethylene, silicone, rubber.

For citation

Gutko Yu.I., Voytenko V.V. Advanced Materials for Manufacturing Disposable and Reusable Core Boxes. Vestnik Magnitogorskogo Gosudarstvennogo Tekhnicheskogo Universiteta im. G.I. Nosova [Vestnik of Nosov Magnitogorsk State Technical University]. 2021, vol. 19, no. 3, pp. 54–60. https://doi.org/10.18503/1995-2732-2021-19-3-54-60

Yury I. Gutko – DrSc (Eng.), Professor, First Vice-Rector, Vladimir Dahl Lugansk State University, Lugansk. Email: This email address is being protected from spambots. You need JavaScript enabled to view it.

Valery V. Voytenko – postgraduate student of the Industrial and Art Castings Department, Vladimir Dahl Lugansk State University, Lugansk. Email: This email address is being protected from spambots. You need JavaScript enabled to view it.

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