Search academic texts

Information × Registration Number 0225U000295, (0122U000053) , R & D reports Title Scientific substantiation and development of the system of automatic alignment of bending of the front ends of rolls and sheets by creation of the controlled speed asymmetry of process of rolling on wide-rod and thick-sheet mills popup.stage_title Наукове обґрунтування і розробка системи автоматичного вирівнювання вигину передніх кінців розкатів і листів шляхом створення контрольованої швидкісної несиметрії процесу прокатки на широкоштабових та товстолистових станах Head Prykhodko Ihor Yu., Доктор технічних наук Registration Date 08-01-2025 Organization Institute of Ferrous Metallurgy. ZI Nekrasov of the National Academy of Sciences of Ukraine popup.description1 Reducing the bending of the end sections along the length of the sheets, which is a consequence of the simultaneous action of a set of factors of the deformation process, to reduce the likelihood of accidents and re-straightening of the sheets. The goal will be achieved by creating a scientifically sound controlled speed asymmetry of the rolling process during the capture of the front end of the roll by rollers. An additional useful ultimate goal of creating a system is to reduce the thickness of the sheets and, as a consequence - to reduce the cost of metal. popup.description2 The object of the study is the technology of sheet production on hot strep and wide-column mills and a system for automatic alignment of the bending of the front ends of rolls and sheets. The purpose of the work is to determine the main patterns of the influence of rolling parameters on the bending of the front end of sheets and to create a scientifically based system for automatic bending control by controlled speed asymmetry of rolls, which will ensure an increase in the flatness of rolled sheets and a reduction in the need for additional straightening. Research methods are mathematical modeling, experimental industrial research of the conditions for the formation of transverse, longitudinal different thicknesses and bending of the end sections along the length of the sheets. The following tasks are solved in the work: a mathematical model of the process of forming the bending of the end sections of sheets (rolls) was developed using finite element modeling methods; the influence of technological factors of rolling on the bending of the end sections of the sheets was determined by mathematical modeling; It is shown that the greatest influence is exerted by the difference in the friction coefficient and the shape factor of the deformation cell. The main approaches to the design of a system for calculating the profiling of rolls of a plate mill have been developed. An innovative computer system for automatic alignment of the bending of the front ends of rolls and sheets by creating a controlled speed asymmetry of the rolling process on wide-stand and plate mills has been developed. A pilot test on the 3600 Huta Częstochowa plate mill showed that the system reduced the number of sheets with curvature that needed to be hot-leveling by 25%.  Product Description popup.authors Ivanov Oleksandr P. Bolotov Valerii A. Verenеv Valentyn V. Vorobei Serhii O. Klemeshov Yevhen S. Kliuchnikov Kyrylo Yu. Korennoi Volodymyr V. Leshchenko Oleksandr І. Markova Svitlana M. Palamar Dmytro H. Podobiedov Mykola І. Prykhodko Ihor Yu. Razdobrieiev Valerii H. Raznosilin Valentyn V. Shevchenko Lidiia V. popup.nrat_date 2025-01-08 Close