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Information × Registration Number 0216U001984, 0115U004952 , R & D reports Title Liquidus temperature of the steel and its influence on the properties of the solidified metal. popup.stage_title Head Skrebtsov Aleksandr Mihailovich, Registration Date 04-08-2016 Organization State Higher Educational Institution "Pryazovskyi State Technical University" popup.description2 The object of research - Phenomenon influence the liquidus temperature of steel, metal smelting process feature in an electric arc furnace. The purpose of work - Determination of the optimal metal overheating above the liquidus temperature of steel with the task of reaching the minimum amount of finished steel products marriage. Research Methods and apparatus - Processing and analysis of published data on the structure of liquid metals and on the influence of melt overheating above the liquidus point of the quality of finished steel products. Implementation and analysis of data from the experimental melts in the 25-ton electric arc furnaces, - selection of metal samples and changing the temperature of molten steel conducted according to the following regime: melt - 3 samples and temperature, oxidation and the recovery period as well for 3 samples and temperature. The results - The literature data and own research and for the first time shown that the temperature of the TPM and the minimum Tmin marriage solidified metal coincide with each other. Consequently, to achieve the highest quality of the solidified molten metal to heat it sufficiently to temperature equilibrium microinhomogeneity. Overheating of the melt for homogenization at temperature-time processing as compared to the temperature equilibrium microinhomogeneity is only recommended for high-alloy steels. Using production data after tests found the average optimal coefficients for the following periods of overheating melting; melting the end of tm/tl, °С - 1,0230 (± 0,0030), the oxidation of the end of t to/tl, °С - 1,0930 (± 0,0032), from the oven before the release of metal, tr/tl, °С - 1,0825 (± 0,0032) and overheating of metal in the ladle tl/tl, °С - 1,0240 (± 0,0030), which achieve the smallest of defects to 6% in the hardened metal. Based on a comprehensive analysis revealed that the recommendations of melting temperature incorrectly considered the liquidus temperature of the steel, it leads to fluctuation marriage solidified metal through cracks by 0.2%, and energy waste. Product Description popup.authors Алексєєва Вікторія Анатолівна Дан Леонід Олександрович Качіков Олексій Сергійович Скребцов Олександр Михайлович Трофімова Лариса Олексіївна Троцан Анатолій Іванович popup.nrat_date 2020-04-02 Close