Development and Research of Technology for Obtaining a Steel Casting Using a Cold-hardening Mixture

Abstract

Fundamental in acquiring the required operational properties of cast products depends on many factors, the main of which are the quality of the mold itself, the mold materials for its manufacture, as well as the choice of the optimal parameters of the technological process modes and the properties of the mold materials themselves. In the foundry industry, the choice of mold material and casting method is a complex task. There are several types of molding, but more than 70% of all metal castings are usually developed using sand molding (SMF). Sand casting consists of two processes such as wet sand casting and chemical bond sand casting process. The article focuses on chemical bonded sand casting, i.e. non-sintering systems (cold self-hardening system) cured with epoxy resin. The mechanism for producing castings using cold hardening mixtures is shown, and in a comparative form in SMF. Next, the microstructures of the obtained samples are investigated, and the results of testing for mechanical properties are described.