Influence of sulphur on mechanical properties of foundry steels and ways to minimise it
Keywords:
foundry steel, ITP, sulphur, non-metallic inclusions, mechanical properties
Abstract
The influence of sulphur on mechanical properties of foundry steels used for the production of highly responsible parts of railway transport has been investigated. It is shown that the sulphur content in steels above 0.025% leads to a sharp decrease in their strength, impact toughness and ductility, which significantly reduces the operational durability of castings. Studies have been carried out to determine the critical limit of sulphur content, at which the properties of steel remain at an acceptable level. On the basis of the obtained data effective technologies of steel desulphurisation have been proposed, which can be introduced in foundry production, in particular, in conditions of Tashkent LMP.
References
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[2] Shulte Yu.A. Electrometallurgy of steel casting. M.: Me-tallurgy, 1970. 328 с.
[3] GOST 977-88. Steel castings. General technical conditions. M.: Izd-wo standards, 1989. 56 с.
[4] Electrometallurgy of steel and ferroalloys / Povolotsky D.Ya., Roshchin V.E., Ryss M.A., Stroganov A.I., Yartsev M.A. Textbook for universities. Izd. 2-th, reworked. And supplement. М.: Metallurgy. 1984. - 568 с.
[5] Yedneral F.P. Electrometallurgy of Steel and Ferroalloys. Izd. 4-th, reworked. and supplement. M.: ‘Metallurgy’, 1977. - 488 с.
[6] Grigorovich K.V., Shibaeva T.V., Arsenkin A.M. Influence of technology of deoxidation of pipe steels on composition and quantity of non-metallic inclusions. Metals. 2011. № 5. С. 164-170.
[7] Goldstein M.I. Special steels. - M.: Metallurgy, 1985.
[8] Kudrin V.A. Theory and technology of steel production: Textbook for universities. - M.: Mir, ACT Publishing House, 2003. - 528 с.
[9] Ten E.B. Quality improvement of castings from cast iron, steel and nickel alloys by out-of-furnace treatment of melts: dissertation ... Doctor of Technical Sciences: 05.16.04. - Moscow, 1992. - 541 с.: ill. Foundry production
[10] Tursunov, N.K., Semin, A.E., Sanokulov, E.A. Study of desulfurization process of structural steel using solid slag mixtures and rare earth metals, (2016) Chernye Metally, (4), pp. 32-37.
[11] Tursunov N. K., Semin A. E., Kotelnikov G. I. Kinetic features of desulphurization process during steel melting in induction crucible furnace. Chernye Metally. 2017. No. 5. pp. 23–29.
[12] Tursunov N. K., Semin A. E., Sanokulov E. A. Study of dephosphoration and desulphurization processes in the smelting of 20GL steel in the induction crucible furnace with consequent ladle treatment using rare earth metals. Chernye Metally. 2017. No. 1. pp. 33–40.
[13] Talgat Urazbayev, Nodirjon Tursunov and Tokhir Tursunov, “Steel modification modes for improving the cast parts quality of the rolling stock couplers”, AIP Conf. Proc. 3045, 060015 (2024). https://doi.org/10.1063/5.0197361.
Published
2025-03-31
How to Cite
Seydametov, S., Tursunov , N., & Toirov, O. (2025). Influence of sulphur on mechanical properties of foundry steels and ways to minimise it. The International Scientific Journal "Engineer", 3(1), 23-30. https://doi.org/10.56143/3030-3893-2025-1-26-30
Section
Mechanics of Materials
