Abstract
Studying of casting roll's crystallization processes and description of roll steel consistent pattern microstructure formation, which is made on steel 150ХНМ basis, are purpose of the work. The work logically consists of two parts – casting processes computer simulation during rolls manufacturing, and computer simulation of casting formation from various modifications of the specified steel grade.
In the first part of the article questions of the rolls crystallization in a combined casting mold are considered, it were studied by computer simulation in the PolygonSoft software. The temperature-time curves of a roll barrel' crystallization process at different distances from the interface of casting-mold are presented.
The cooling rates, at which the steel rolls structure formation are carried out, are determined.
The solid phase emissions process in the casting has modeled using the Thermo Calc software package. Received data explain the process of microstructure formation in a roll barrel, also give a broad picture of the chemical composition influence on the roll steel graphitization processes. Presented data can be useful for industrial enterprises, which produced rolls, as well as for researchers studied rolls.
Keywords
Roll, computer simulation, cooling rate, austenite, chemical elements, mold.