Research of the Process of Production of Steel Square Continuous Billets for Rolling Balls of Large Diameter

Abstract:

The paper investigates the technology of production of steel billets continuously cast billets for rolling balls of large diameter. In Kazakhstan, in connection with the development of new copper deposits such as Aktogay and Bozshakol, the need for large diameter steel grinding balls for primary ore processing has increased. The main problem in the operation of large diameter grinding balls is the tendency of the grinding media to break during operation. The authors of the work investigated the process of production of steel billets continuously cast billets with a cross section of 150 × 150 mm for rolling balls of large diameter (d 125 mm) in the PB LLP "KSP Steel", which showed that the breaking of grinding balls is initiated mainly by the presence of internal discontinuities (gas axial looseness) in continuously cast billets. Studies have shown that the technological scheme for the production of grinding balls with a diameter of 125 mm from continuously cast billets with a section of 150 × 150 mm, including steel smelting in an arc furnace with steel finishing on a ladle-furnace unit, deoxidation with aluminum and degassing in a ladle vacuum apparatus, casting steel in a closed jet on a continuous casting and further production of rolled stock on a rough rolling mill ensures the absence of internal discontinuities (gas bubbles, axial looseness) in the workpieces and ensures the production of high quality balls.

• Periodical: Defect and Diffusion Forum (Volume 410)
• Pages: 330-335
• DOI: https://doi.org/10.4028/www.scientific.net/DDF.410.330
• Online since: August 2021
• Authors: Petr O. Bykov*, Maral Zh. Tussupbekova, Dinara R. Absolyamova
• Keywords: Axial Looseness, Continuously Cast Billet, Long Products, Macrostructure, Steel

References

[1] P. Shen, H. Pan, E. Seitmuratova, F. Yuan, S. Jakupova, A Cambrian intra-oceanic subduction system in the Bozshakol area, Kazakhsten, Lithos. 224-225 (2015) 61-77.

DOI: 10.1016/j.lithos.2015.02.025

[2] B.R. Rakishev, New large open pit copper mines in Kazakhstan, Mining Informational and Analytical Bulletin. 4 (2018) 5-14.

DOI: 10.25018/0236-1493-2018-4-0-5-14

[3] B.R. Rakishev, Development of the Bozshakol and Aktogay copper ore deposits in Kazakhstan, Gornyi Zhurnal. 1 (2019) 89-92.

DOI: 10.17580/gzh.2019.01.18

[4] Z. Wentao, H. Yuexin, L. Yanjun, M. Shaojian, S. Yongsheng, Research on prediction model of ore grinding particle size distribution, Journal of Dispersion Science and Technology. 41(4) (2020) 537-546.

DOI: 10.1080/01932691.2019.1592688

[5] A. Abazarpoor, R. Hejazi, M. Saghaeian, V. Sheikhzadeh, Ball mill and HPGR effect on the particle size, shape and specific surface area of pellet feed, IMPC 2018 - 29th International Mineral Processing Congress, 2019, pp.390-399.

DOI: 10.1080/03719553.2017.1284414

[6] N.A. Shaburova, Studying the peculiarities of steel grinding balls structuring, Solid State Phenomena. 284 (2018) 685-689.

DOI: 10.4028/www.scientific.net/ssp.284.685

[7] K.N. Shvedov, I.K. Galim'yanov, M.A. Kazakovtsev, Production of grinding balls of high surface and normalized volume hardness, Metallurgist. 64(5-6) (2020) 499-507.

DOI: 10.1007/s11015-020-01019-3

[8] D.V. Stalinskii, A.S. Rudyuk, V.K. Solenyi, grinding balls for the first stage of iron raw grinding in tumbling mills, Steel in Translation. 50(2) (2020) 116-127.

DOI: 10.3103/s0967091220020102

[9] S.S. Spanov, A.K. Zhunusov, L.B. Tolymbekova, Pilot plant melting of steel using Ferro-Silico-Aluminum at KSP steel, Metallurgist. 60(11-12) (2017) 1149-1154.

DOI: 10.1007/s11015-017-0420-1

[10] A.T. Kanaev, P.O. Bykov, A.V. Bogomolov, E.N. Reshotkina, Reducing the central porosity of continuous-cast billet by modification of the solidification process, Steel in Translation. 42(8) (2012) 643-645.

DOI: 10.3103/s0967091212080037

[11] E.N. Smirnov, A.N. Smirnov, V.A. Sklyar, V.A. Belevitin, S.V. Kuberskii, Technical feasibility assessment for roll pass designs in three-high shape-mill stands in modern mini-mills, Metallurgist. 63(11-12) (2020) 1294-1302.

DOI: 10.1007/s11015-020-00951-8

[12] R. Pyszko, M. Príhoda, M. Machu, Z. Franek, Data processing of measured surface temperatures of continuously cast billets and blooms to verify the numerical solidification model, 29th International Conference on Metallurgy and Materials, Brno, Czech Republic, 2020, pp.80-85.

DOI: 10.37904/metal.2020.3447

[13] V.V. Naumenko, A.V. Muntin, A.V. Danilenko, O.A. Baranova, study of the surface defect nature of hot-rolled products in the edge zone, Steel in Translation. 50(1) (2020) 46-52.

DOI: 10.3103/s0967091220010088

[14] V. Solanki, G. Mukhopadhyay, Metallurgical analysis of transverse crack of rebars, Engineering Failure Analysis. 104 (2019) 1143-1156.

DOI: 10.1016/j.engfailanal.2019.06.058

[15] K.N. Vdovin, V.V. Tochilkin, O.A. Filatova, V.V. Tochilkin, Analysis of the process of casting of the metal by an open stream and the design of the equipment of receiving chambers of the Tundish of CCM, Refractories and Industrial Ceramics. 60(1) (2019) 6-9.

DOI: 10.1007/s11148-019-00300-6

[16] M.Y. Chubukov, D.V. Rutskiy, D.P. Uskov, Analyzing the features of non-metallic inclusion distribution in Ø410 mm continuously cast billets of low carbon steel grades, Materials Science Forum. 973 (2019) 21-25.

DOI: 10.4028/www.scientific.net/msf.973.21

[17] A.A. Umanskii, L.V. Dumova, influence of electrosmelting conditions on rail quality and production costs, Steel in Translation. 48(11) (2018) 712-717.

DOI: 10.3103/s0967091218110128

[18] J. Sviželová, M. Tkadlečková, K. Michalek, M. Strouhalová, Influence of casting speed on centerline porosity formation in continuously cast round steel billets, 26th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, 2017, pp.235-240.

[19] I. Clitan, M. Abrudean, V. Muresan, D. Sas, Optimizing the casting length of single diameter steel billets based on minimum cost, 2016 20th International Conference on System Theory, Control and Computing (ICSTCC), Sinaia, Romania, 2016, pp.73-78.

DOI: 10.1109/icstcc.2016.7790643

[20] Y.N. Smyrnov, V.A. Skliar, V.A. Belevitin, R.A. Shmyglya, O.Y. Smyrnov, Defect healing in the axial zone of continuous-cast billet, Steel in Translation. 46(5) (2016) 325-328.

DOI: 10.3103/s0967091216050132