RESEARCH OF STRENGTH AND DESTRUCTIBILITY OF FOUNDRY LIQUID-GLASS CORES CONTAINING STEEL POWDER
In the foundry industry, foundry sand cores made by various core-making technologies are frequently used. An increase in the requirements for the environmental friendliness of the foundry industry raises interest in the liquid-glass core-making technology, which uses eco-friendly chemical compounds as components of a core mixture, a binder, and a catalyst/hardener. In addition, the liquid-glass core-making technology can use a circulating core mixture and waste of the metallurgical, machine, mining, and wood industry. The use of finely-dispersed steel powder, which is waste of the machine industry, in the liquid-glass core-making technology is investigated by the authors of this article. The results of the comparative experimental research of the operational and ultimate structural robustness during stretching, compressing, and bending of the foundry liquid-glass core samples made by the reference core-mixture composition and the core-mixture composition containing finely-dispersed steel powder in the amount of 1…10%, as well as the comparative test results for the destructibility of such foundry cores are presented. The compositions of the investigated core mixtures and the sample-making technology for the foundry liquid-glass cores containing steel powder are described. The experimental results and the field of application for the foundry liquid-glass cores, containing finely-dispersed steel powder, are discussed.