INFLUENCE OF HIGH-SPEED PROFILING MODE ON THE QUALITY OF ROLLED SHAPES
DOI:
https://doi.org/10.31471/1993-9981-2024-1(52)-41-52Keywords:
deformation speed measurement, high-speed mode, calibration of rolls, main diameters, working rolls, profile condition, quality of profiles, energy consumption.Abstract
The study analyzed in detail the speed regime of forming bent profiles of the open type, focusing on the change in the peripheral velocities of the points of the axial section of the rolls depending on the ratio of their diameters and distances to the main diameter of the lower roll. It was found that the difference in the diameters of the rolls, in particular cases when the upper roll has a larger diameter than the lower one, significantly affects the speed regime of the process. At the same time, the displacement of the working groove to the lower roll, which is accompanied by bending the profile elements to the axis, leads to a decrease in the average profiling speed. This opens up prospects for a more detailed study of parameters such as the caliber height and the direction of bending, in order to optimize the speed regime. The speed regime is a decisive factor that affecting a number of characteristics of the process and the final product. In particular, the quality of the surface of the profiles, the level of wear of the rolls, energy consumption and the torque distribution between the rolls depend on it. Therefore, the correct selection of diameters and ratios of rolls, as well as the optimal location of calibers in the profile-making equipment are of paramount importance for ensuring a stable and high-quality final result. The study also included an analysis of the design and technological aspects of the speed regime, in particular the influence of friction, metal thinning and uniformity of roll rotation on the overall efficiency of the process. It was found that taking into account these factors contributes to the improvement of existing profiling technologies, reduces production losses and contributes to the creation of high-quality products. Thus, the results of the study are of practical importance for the modernization of equipment, optimization of production processes and increasing the competitiveness of products in the market.
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