Renovation of Technologies and Equipment for Hot Rolling Processes at Small Section Mills
摘要
The article addresses the need to optimize and update existing technological approaches with different structural composition of the main rolling equipment. On the basis of theoretical studies, technical solutions are proposed to improve the technological modes of operation, composition, and design parameters of small-grade hot rolling mills. The main technological solutions in rolling production include the need to switch to a non-continuous round workpiece of increased cross section; improving the quality of finished products through the introduction of a caliber-free rolling process; use of an intensive crimping machine, which will eliminate the rough group of cells. In general, as the results of theoretical studies and experience of industrial implementation have shown, the technology of the process of non-caliber rolling allows to increase the productivity of equipment, expand the range, and reduce the cost of finished metal rolling while reducing the consumption of working rolls. Radial-shear mills are complex rolling equipment that determine the productivity and quality of finished products; this is due to the fact that the blanks in the process of deformation receive both rotational and translational movement. It is indicated that the only way to ensure the competitiveness of commodity rolled products by its designation indicators is mandatory technical re-equipment.