Abstract
Minimization of the metal consumption in components imposes ever-increasing structural requirements on steel. Accordingly, it is important to study the behavior of structural defects in continuous-cast billet (shrinkage pores, gas bubbles, axial porosity) during deformation. The use of laminar physical models to study the pressure treatment of metals is further developed in the present work. The influence of the strain on defect healing may be assessed by using laminar models together with defect application to the surface of layer n and the analysis of information regarding its distortion. The proposed method is applied to the deformation of continuous- cast bar billet in the first three rectangular grooves of the reduction cell in the 500/370 linear rolling mill at PAO Donetskii Metalloprokatnyi Zavod. On the basis of the experimental data, the existing healing mechanism for axial metal defects may be refined in terms of the total extension and the applied deforming forces.
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References
Parusov, V.V., Belitchenko, A.K., Bogdanov, N.A., et al., Termomekhanicheskayaobrabotkaprokataiznepreryvlitoizagotovkimalogosecheniya (Thermomechanical Rolling Process of Continuous Casting Billet of Small Section), Zaporozhye: Zaporozh. Gos. Univ., 2000.
Park, J.J., Prediction of void closure in a slab during various deformation processes, J. Mech. Technol., 2011, vol. 25, no. 11, pp. 2871–2876.
Yur’ev, A.B., Godik, L.A., Nugumanov, R.F., et al., Transformation of defects in continuous-cast billet during rail production, Steel Transl., 2009, vol. 39, no. 2, pp. 125–126.
Sychkov, A.B., Zhigarev, M.A., Perchatnik, A.V., et al., The transformation of defects in continuous-cast semifinished products into surface defects on rolled products, Metallurgist (Moscow), 2006, vol. 50, no. 1, pp. 83–90.
Koksharev, Yu.M. and Lubyanoi, O.A., Research of brewing of internal defects in the billets produced on the West-Siberian Metallurgical Plant (ZSMK), in Trudy Vseross. nauchno-prakt. konf. “Metallurgiya: tekhnologii, upravlenie, innovatsii, kachestvo” (Proc. All-Russ. Sci.-Pract. Conf. “Metallurgy: Technology, Management, Innovation, and Quality”), Novokuznetsk: Sib. Gos. Fed. Univ., 2010, pp. 73–77.
Rolling of rails from continuous casting billet, Inform. Rukovoditelyu, 2003, no. 10.
Minaev, O.A., Smyrnov, Y.N., Mit’ev, A.P., Grigor’ev, M.V., Demidova, I.A., Slugin, O.O., and Myagkov, V.M., UA Patent 77283, Byull. Izobret., 2006, no. 11.
Tirosh, J., Shrizby, A., and Rubinski, I., Evolution of anisotropy in the compliances of porous materials during plastic stretching or rolling—analysis and experiments, Mech. Mater., 1999, vol. 31, no. 7, pp. 449–460.
Tripathy, P.K., Das, S., Jha, M.K., et al., Migration of slab defects during hot rolling, Ironmaking Steelmaking, 2006, vol. 33, no. 6, pp. 447–483.
Zav’yalov, A.A., Logvinov, A.V., and Tulupov, O.N., Laboratory modeling methods of segregation during deformation of continuous cast billet, in Obrabotka sploshnykh i sloistykh materialov (Treatment of Solid and Laminate Materials), Magnitogorsk: Magnitogorsk. Gos. Tekh, Univ., 2001, pp. 66–71.
Loginov, Yu.N. and Eremeeva, K.V., Behavior of defect of pore type, adjoining to strip surface, during rolling, Proizvod. Prokata, 2008, no. 10, pp. 2–6.
Loginov, Yu.N. and Eremeeva, K.V., Changes in shape of single pore situated in a round billet during the drawing process, Kuznechno-Shtampovochnoe Proizvod., 2009, no. 4, pp. 3–8.
Loginov, Yu.N. and Eremeeva, K.V., Rolling of billet with single pore located in volume, Zagotovit. Proizvod. Mashinostr., 2009, no. 11, pp. 33–37.
Loginov, Yu.N. and Eremeeva, K.V., Deformation of pores in the central part of the rod at initial pressing stage, Izv. Vyssh. Uchebn. Zaved., Chern. Metall., 2009, no. 9, pp. 46–51.
Tarnovskii, I.Ya., Pozdeev, A.A., and Lyashkov, V.B., Deformatsiya metalla pri prokatke (Metal Deformation during Rolling), Sverdlovsk: Metallurgizdat, 1956.
Anikeev, V.V., Structural heredity of carbon steel in the “ingot-rolled” system at different manufacturing plants, in Mater. mezhd. nauchno-tekh. konf. “Genezis, teoriya i tekhnologiya litykh materialov” (Proc. Int. Sci.-Tech. Conf. “Genesis, Theory and Technology of Cast Materials”), Vladimir, 2002, pp. 221–222.
Smyrnov, Y.N., Leirikh, I.V., and Zub, V.V., Investigation of structure formation dynamics and properties of high-quality welding wire of continuously cast 07G1NMA steel, Met. Lit’e Ukr., 2006, nos. 3–4, pp. 43–47.
Shubin, I.G. and Tulupov, S.A., Sovershenstvovanie kalibrovki valkov zagotovitel’nogo stana, povyshayushchie vykatku poverkhnostnykh defektov (Improvement of the Calibration of Rolls for Manufacturing Mill for Efficient Reduction of the Size of Surface Defects), Magnitogorsk: Magnitogorsk. Gos. Tekh, Univ., 1990.
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Original Russian Text © Y.N. Smyrnov, V.A. Skliar, V.A. Belevitin, R.A. Shmyglya, O.Y. Smyrnov, 2016, published in Izvestiya Vysshikh Uchebnykh Zavedenii, Chernaya Metallurgiya, 2016, No. 5, pp. 322–327.
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Smyrnov, Y.N., Skliar, V.A., Belevitin, V.A. et al. Defect healing in the axial zone of continuous-cast billet. Steel Transl. 46, 325–328 (2016). https://doi.org/10.3103/S0967091216050132
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DOI: https://doi.org/10.3103/S0967091216050132