Electrometallurgy Today, 2021, №03



2021 №03 (02)

DOI of Article 10.37434/sem2021.03.03

2021 №03 (04)

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Electrometallurgy Today (Sovremennaya Elektrometallurgiya), 2021, #3, 13-18 pages

Production of titanium ingots with regulated oxygen content by electron beam melting

S.V. Akhonin¹, O.M. Pikulin¹, V.O. Berezos¹, A.Yu. Severin¹, O.G. Erokhin²

¹E.O. Paton Electric Welding Institute of the NAS of Ukraine. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: office@paton.kiev.ua
²SC «SPC «Titan» of the E.O. Paton Electric Welding Institute of the NAS of Ukraine». 26 Raketna Str., 03028, Kyiv, Ukraine. Е-mail: titan.paton@gmail.comни». 03028, м. Київ, вул. ракетна, 26. Е-mail: titan.paton@gmail.com

Abstract
Comprehensive research work was performed to produce ingots of Grade 2 titanium alloy of 600 mm diameter and ingots of Grade 3 titanium alloy of 1100 mm diameter and up to 3 m length with regulated oxygen content of 0.12…0.16 % by the method of cold-hearth electron beam melting in the production facilities of SC «SPC «Titan» of the E.O. Paton Electric Welding Institute of the NAS of Ukraine» in multifunctional electron beam unit UE5810. A method of forming the charge billet and a formula for calculation of the amount of TiO2 powder for alloying are proposed. Defectfree ingots of titanium alloys of Grade 2 and Grade 3 with a regulated oxygen content were produced and the range of deviation of its distribution in the ingot metal of ± 0.02 % was ensured. It is shown that the proposed modes of electron beam heating of the consumable billet, metal melting in the cold-hearth and in the mould, as well as the melting rate ensure complete dissolution of titanium dioxide particles in the cold hearth, and absence of defects in the produced ingots, enriched in oxygen. Ref. 14, Tabl. 1, Fig. 5.
Keywords: cold-hearth electron beam melting; electron beam unit; titanium ingot; oxygen; regulated oxygen content; titanium dioxide; melting rate; macrostructure

Received 22.06.2021

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