International Scientific Journals
of Scientific Technical Union of Mechanical Engineering "Industry 4.0"

The main consumers of grinding balls are mining, metallurgical, cement and energy industries. In these industries one of the main and very common operations is the grinding of various materials. Rolled steel balls are mainly produced by plastic deformation on crossscrew rolling mills. Technological limitations of increasing the hardness groups and the wear resistance of the balls currently available at the Metal Rolling plant of JSC “Sokolov-Sarbay mining and processing production association” (MRP JSC “SSGPO”), and they do not allow currently to quickly improve their quality. But at the same time, if the quality of finished products is improved, the MRP JSC “SSGPO” may have the opportunity to sell balls not only between its enterprises, but also to the domestic market, as well as the opportunity to develop export sales of balls to the countries of near and far abroad. Therefore, this paper presents the results of the study of the main causes of defects at the ball rolling mill 30-60 of metal rolling plant JSC “SSGPO” and the search for their exclusion

In this paper, a computer simulation of a new technology of thick-sheet rolling, including rolling in rolls with a relief surface followed by rolling on rolls with a smooth barrel to the desired size. The analysis of effective plastic deformation, hydrostatic pressure and temperature field was carried out according to the results of modeling. According to the results of the analysis of effective strain, maximum of processing in the first pass receives the ridge area, but after the second pass observed alignment distribution of this parameter over the cross section. The study of the temperature field showed that the greatest temperature difference in the cross section occurs when rolling in relief rolls, in the future when rolling in smooth rolls due to the increase in the contact surface area, this difference decreases. Analysis of hydrostatic pressure showed the presence of both compressive and tensile stresses in the deformation zone. Such distribution is caused by the presence of a relief surface after 1 pass in the further alignment of the strip profile, which occurs both in the longitudinal and transverse directions.