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Information × Registration Number 0222U000850, 0117U002604 , R & D reports Title Development of scientific and technological foundations for improving the quality of large steel forging ingots through physical-chemical and high-temperature influences on liquid metal during crystallization popup.stage_title Head Narivskyi Anatolii V., Доктор технічних наук Registration Date 20-01-2022 Organization Physico-technological institute of metals and alloys National academy of Sciences of Ukraine popup.description2 Scientifically it were grounded technical solutions for improving the quality of the steel ingots with a mass from 7,6 t to 142 t in the controlled processes of crystallization and structure formation; the regularities processes of crystallization and the formation of structural and segregation zones in the ingots under various conditions of heat removal and intensity of convective and capillary mass transfer in the interdendritic channels of the alloy it have been established; the dependence of intensity of the liquat flow on crystallization rate of the ingot has been processed, rational modes of the processes of treatment liquid metal during hardening with using pressure, vibration, vacuum and pulsation mixing have been determined; the use of plasma treatment of the melt during the crystallization of the steel ingots, which reduces processes of the formation of a chemical non uniformity and levels of the crystallization front of the alloy along the height of the ingot has been proposed; the content of gases, the morphology of non-metallic inclusions and their quantitative distribution in sections at different horizons of the ingot with a mass of 142 tons, obtained in vacuum, have been determined. Product Description popup.authors Baranova Valentyna M. Verzilov Oleksii P. Kondratiuk Stanislav Ye. Kurpas Volodymyr I. Narivskyi Anatolii V. Narivskyiy Oleg A. Nuradinov Abdi S. Perehoda Oleksandr V. Smirnov Oleksii M. Tarasevych Ivan M. Tarasevych Mykola I. Tverdokhvalov Viacheslav O. Scheglov Volodymyr M. Iasynska Olena O. popup.nrat_date 2022-03-09 Close