Study of thermal resistance of cold mixtures with clay addition

A.A Alina; V.Y. Kulikov; P.V. Kovalev; A.M. Dostayeva

doi:10.31643/2021/6445.11

Authors

A.A Alina NAO Kartu
V.Y. Kulikov NAO Kartu (Karaganda Technical University)
P.V. Kovalev Peter the Great St. Petersburg Polytechnic University
A.M. Dostayeva NAO Kartu

DOI:

https://doi.org/10.31643/2021/6445.11

Keywords:

mixture, shape, properties, heating, metal, heat resistance.

Abstract

The article analyzes the results of heat resistance of cold-harmful mixtures with the addition of clay. The article presents the results of an experimental laboratory study of the properties of samples from CTS, obtained by various methods. The scientific novelty of the technology lies in the fact that the technology of casting in cold-rolled steel ensures high quality of the casting surface, the absence of gas defects and blockages in the casting. The selection of the composition and technological parameters for the manufacture of the mold, contributing to the production of high-quality defect-free castings, will significantly reduce their cost, which will have a positive effect on the economy of our country. The study of the change in density over time depending on the applied load was studied in a series of experiments. The density of the mixture was determined every thirty seconds during the entire time of the formation of the dispersed medium. These experiments showed that at the beginning of the formation of the shell, its density increases significantly. In works on the thermal stability of polymers, the general laws of thermal decomposition and carbonization of cyclic, spatially crosslinked hot curing polymers were investigated and it was shown that the kinetics of destruction, the composition of gaseous products, the amount of coke formed and its properties depend on the properties of the initial polymers - the degree of crosslinking of molecular chains, chemical structure, the presence of impurities of catalysts and other curing conditions, as well as the heating conditions - speed and temperature. The article summarizes some of the results of the study, which is most appropriate for thin-walled steel castings to use the following mixture composition: filler - quartz sand; binder - clay of the Kazakhstani deposit, epoxy resin, hardener.

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Author Biographies

A.A Alina, NAO Kartu

Doctoral student of the Department of Nanotechnology and Metallurgy. Kazakhstan, Karaganda, NAO Kartu.

V.Y. Kulikov, NAO Kartu (Karaganda Technical University)

Candidate of Technical Sciences, Professor, Head of the Department of Nanotechnology and Metallurgy. Kazakhstan, Karaganda, NAO Kartu.

P.V. Kovalev, Peter the Great St. Petersburg Polytechnic University

Associate professor of the Department of Metallurgical and Foundry Technologies, Peter the Great St. Petersburg Polytechnic University, St. Petersburg, Russia.

A.M. Dostayeva, NAO Kartu

PhD, Senior Lecturer of the Department of Nanotechnology and Metallurgy. Kazakhstan, Karaganda, NAO Kartu.

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