RF State Research Centre JSC SPA “CNIITMASH” (Moscow, Russia):

V. S. Dub, Dr. Eng., Scientific Chief, Institute of Metallurgy and Machine-building
D. S. Tolstykh, Leading Scientific Researcher, dstolstykh@cniitmash.com
I. A. Ivanov, Cand. Phys.-Math., Leading Scientific Researcher
A. N. Malginov, Leading Scientific Researcher

The paper describes qualitative variation of thermal-physical parameters of solidifying large ingot and the following consequences of this variation. The chemical elements presented in the ingots, their classification and effect on operating parameters of finished products are described as well. The tendency to rise of ingot metal purity and positive influence of this tendency on the value of brittletough transition in steel is presented.

The study was financially supported by the grant issued by the Russian Scientific Fund (project No. 17-19-01773).

1. Wang J., Fautrelle Y., Nguyen-Thi H., Reinhart G., Liao H., Li X., Zhong Y., Ren Z. Thermoelectric Magnetohydrodynamic Flows and Their Induced Change of Solid–Liquid Interface Shape in Static Magnetic Field-Assisted Directional Solidification. Metallurgical And Materials Transactions A. 2016. March. Vol. 47A. pp. 1169–1179.
2. Efimov V. A., Eldarkhanov A. S. Modern technologies of casting and crystallization of alloys. Мoscow : Mashinostroenie. 1998. 360 p.
3. Stupak V. D. Development of the technology and examinati on of the effect of metal blowing by inert gas in a mould during casting and effect of solidification on quality of a large forged ingot. Dissertation … of Candidate of Engineering Sciences. Sverdlovsk. 1977. 187 p.
4. Kurz U., Fischer D. Fundamental grounds of solidification. Moscow-Izhevsk : Institut kompyuternykh issledovaniy. 2013. 300 p.
5. Dub V. S. Investigation of out-of-centre segregation and development of the methods for oppression of its development in large ingots. Dissertation … of Doctor of Engineering Sciences. Мoscow : CNIITMASH. 1980. Vol. 1, 2.
6. Khlyamkov N. A. Investigation of influence of impurities on crystallization of large ingots from low-alloyed steel. Dissertation … of Candidate of Engineering Sciences. Мoscow : CNIITMASH. 1982. 194 p.
7. Dub A. V., Makarycheva E. V. Role of micro-processes in forming of macro-properties of the structural chromiumnickel-molybdenum steel. Moscow : Metally. 2007. No. 3. pp. 53–63.
8. Makarycheva E. V. Influence of deoxidizers and impurities on cast structure and properties of chromium-nickel-molybdenum steels and choice of the methods for quality management of large ingots for forgings. Dissertation … of Candidate of Engineering Sciences. Мoscow : CNIITMASH. 2003. 186 p.
9. Gamanyuk S. B., Zyuban N. A., Rutskii D. V., Palatkina L. V. Features of the distribution non-metallic inclusions in the structural zones of a 24.2 ton ingot of 38ХН3МФА steel. CIS Iron and Steel Review. 2016. Vol. 11. pp. 35–40.
10. Kopeliovich D. D. Prediction of parameters of the out-of-centre segregation area in steel ingots. Dissertation … of Candidate of Engineering Sciences. Мoscow : CNIITMASH. 1990. 137 p.
11. Inventor’s certificate No. 2013618230. «Simulation of steel melt solidification». Dub A. V., Ivanov I. A., Romashkin A. N., Dub V. S., Makarycheva E. V., Malginov A. N., Shamrov E. V. Registered 04.09.2013.
12. Inventor’s certificate No. 2016614040 «Program of computer simulation of forming of physical heterogeneity during metals solidification from the melt «Porosity 3D». Romashkin A. N., Ivanov I. A., Malginov A. N., Dub V. S., Tolstykh D. S. Registered 12.04.2016.
13. Inventor’s certificate No. 2016610257 «Program of computer simulation of dynamics of solid phase growth during metals solidification from the melt «Solid 2D». Romashkin A. N., Ivanov I. A., Malginov A. N., Dub V. S., Tolstykh D. S. Registered 11.01.2016.
14. Inventor’s certificate No. 2016610506 «Program of computer simulation of forming of structural heterogeneity during metals solidification from the melt «Structure 3D». Romashkin A. N., Ivanov I. A., Malginov A. N., Dub V. S., Tolstykh D. S. Registered 13.01.2016.
15. Dub A. V. Physical-chemical grounds and management on the processes of primary structure forming and on the complex of operating properties for low-alloyed steels. Dissertation … of Doctor of Engineering Sciences. Мoscow : Moscow Institute of Steel and Alloys. 2000. 405 p.
16. Markov S. I. Metal science grounds of billet production for high reliable components of power engineering equipment and pipeline systems. Dissertation … of Candidate of Engineering Sciences. Мoscow : CNIITMASH. 2012. 83 p.
17. Markov S. I., Balikoev A. G., Dub V. S., Lebedev A. G., Gurovich B. A., Krikun E. V., Kuleshova E. A. Shell steels for perspective nuclear power units. Tyazheloe mashinostroenie. 2016. No. 7-8. pp. 2–8.