Electrometallurgy Today, 2024, №04



2024 №04 (08)

DOI of Article 10.37434/sem2024.04.01

2024 №04 (02)

---

Electrometallurgy Today (Suchasna Elektrometallurgiya), 2024, #4, 3-10 pages

Mastering the technology of producing ingots from heat-resistant alloys KhN38VT and KhN60VT by the electron beam melting method

S.V. Akhonin¹, V.O. Berezos¹, M.I. Medvedev², O.S. Bobukh², D.S. Ivanov³, O.G. Yerokhin¹

¹E.O. Paton Electric Welding Institute of the NAS of Ukraine 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: titan.paton@gmail.com
²Ukrainian State University of Science and Technologies. 2 Lazaryan Str., 49010, Dnipro. E-mail: office@ust.edu.ua
³Zaporizhzhia Casting-Mechanical Plant. 72 Pivdenne Prosp., 69008, Zaporizhzhia, Ukraine. E-mail: venomzp@live.com

Abstract
In order to optimize the technology of production of nickel- and iron-based heat-resistant alloys, the E.O. Paton Electric Welding Institute performed melting of a batch of ingots of Kh38VT and Kh60VT grades. The ingots were produced using the technology of cold-hearth electron beam melting and portioned feed of liquid metal to a water-cooled crucible. The conducted work showed that the electron beam melting method allows producing high-quality defect-free ingots of nickel-based heat-resistant alloys that meet the requirements of the standards, and it can be used instead of secondary vacuum-arc remelting. When using ingots of primary induction remelting as the initial charge billet, it is not necessary to add alloying elements with high vapor pressure to ensure a chemical composition that meets GOST 5632‒72. In addition, the level of mechanical properties of KhN60VT alloy bars almost completely satisfies the requirements of TU 14-3-571‒2004 on «Seamless cold-deformed pipes from the KhN60VT (EI868) alloy and KhN60VT-VD alloy for the aviation industry». 10 Ref., 4 Tabl., 10 Fig.
Keywords: heat-resistant alloy, charge billet, ingot, electron beam melting, cold-hearth, refining, impurities, metal quality

Received: 06.08.2024
Received in revised form:11.09.2024
Accepted: 17.12.2024

References

1. Bratkovsky, E.V., Zavodany, A.V. (2008) Electrometallurgy of steel and special electrometallurgy. Novotroitsk, NF MISiS [in Russian].
2. Zhouhua, J., Yanwu, D., Kuangdi, X. (2023) Vacuum Metallurgy. In: The ECPH Encyclopedia of mining and metallurgy Ed. by Xu, K. Springer, Singapore. https://doi.org/10.1007/978-981-19-0740-1_1388-1
3. Voskoboynikov, V.G., Kudrin, V.A., Yakushev, A.M. (2002) General metallurgy: Textbook for universities. 6th Ed. Moscow, ICC Akademkniga [in Russian].
4. Kudrin, V.A. (2003) Theory and technology of steel production. Moscow, Mir [in Russian].
5. Paton, B.E., Trigub, N.P., Kozlitin, D.A. et al. (1997) Electron beam melting. Kyiv, Naukova Dumka [in Russian].
6. Ladokhin, S.V., Levitskyi, M.I., Chernyavskyi, V.B. et al. (2007) Electron beam melting in foundry production. Kyiv, Stal [in Russian].
7. Paton, B.E., Trigub, N.P., Akhonin, S.V. (2008) Electron beam melting of refractory and highly reactive metals. Kyiv, Naukova Dumka [in Russian].
8. Trigub, N.P., Akhonin, S.V. (1996) Optimization of smelting of steel and alloy ingots in an electron beam installation with an cold hearth. Problemy Spets. Elektrometallurgii, 2, 12-17 [in Russian].
9. Movchan, B.A., Trigub, N.P., Gromov, V.I. et al. (1975) Purity and properties of SH15, 18H2N4VА and H18N10Т steels, premelted in an electron beam furnace with an cold hearth. Problemy Spets. Elektrometallurgii, 1, 48-50 [in Russian].
10. Trigub, N.P., Zhuk, G.V., Kornejchuk, V.D. et al. (2007) Industrial electron beam installation UE-5812. Sovrem. Elektrometall., 1, 11-14 [in Russian].

---

Advertising in this issue:

---