STUDING OF ROLL STEEL STRUCTURE FORMATION PROCESS

Roll steel crystallization process, and formation process of it's microstructure during cooling are considered in this article. Presented results are received by conducting of laboratory experiments, metallographic researches of roll steel. Short review of science literature is carried out, data about alloys applied in roll production is showed in first part of the article. Moreover, problems in roll manufacture, with which industry have faced, as well arising due this science obligatoriness for making researches, are considered. Based on performed analysis, the researches' target is formulated. Methodology and equipment used during researches are short considered in second part of the article. Besides, influence of cooling speed on roll steel parameters: actual grain size, carbide phase quantity, and temperature intervals of its formation are reviewed. Quantity characteristics of roll steel microstructure have determined. Data received due researches in laboratory conditions are presented graphical. Conclusions based on obtained results, as well as recommendations for further researches are given in final part of the article.