Electroslag Remelting Technology for Contemporary Engineering. Retrospection and New Possibilities

Дуб, В. С.; Levkov, L. Ya.; Шурыгин, Д. А.; Tolstykh, D. S.; Klochai, V. V.; Korzun, E. L.; Garchenko, A. A.

doi:10.1007/s11015-018-0688-9

Cited by 4 publications

(2 citation statements)

References 3 publications

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“…One of the known technological methods that allow to improve plastic characteristics of metal without decreasing of tensile strength and improve its chemical, physical and structural isotropy is electroslag remelting (ESR) [7,8]. During this process, as well as other sequential melting processes, at any given moment in time there is a relatively small mass of metal (3-10% of the total mass of the ingot) in the liquid state.…”

Section: New Generation Of Duplex Steelsmentioning

confidence: 99%

New generation of super duplex steels for equipment gas and oil production

et al. 2019

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Oil&gas producing industry today is increased production volumes from old deposits on land, offshore and deep-water. The materials used to create modern equipment that meets these trends should be distinguished by increased productivity in conditions of corrosion and high pressure, to ensure trouble-free operation. In such conditions, taking into account the necessary provision of acceptable cost indicators, there is no alternative to duplex steels. Their crystal structure simultaneously allows using the advantages of ferritic and austenitic phases. The report presents the results of using a compositional and technological methods for structure management, the rationale alloying with copper (3.0-3.3%). Application of ESR in the manufacture of steel billets of super duplex steel has demonstrated the ability to simultaneously achieve physical, chemical and structural homogeneity, ensuring high corrosion&mechanical characteristics. The thermodynamic and kinetic conditions for the formation of optimal phase steel composition are determined. Grounded heat treatment regimes, prevent the formation of sigma and psi-phase and contribute to the formation of stable intermetallides (30-300 nm). Based on the test results of “Gazprom-VNIIGAZ” LLC the new steel is recommended for the manufacture of valve bodies and in-vessel internals used in the fields, that containing H2S and CO2 up to 25% in the fluid.

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Section: New Generation Of Duplex Steelsmentioning

confidence: 99%

New generation of super duplex steels for equipment gas and oil production

et al. 2019

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“…The melting metal droplets at the tip of electrode go through the slag cover and come together in the molten metal pool. And finally they are solidified in the cooling water mold to form the high quality, low defects and segregation ingots [2]. Generally, the performance of ingot is characterized by its surface and internal performance, which depends intensively on the temperature and profile of melting pool [3].…”

Section: Introductionmentioning

confidence: 99%

Investigation on the effect of electrode tip on formation of metal droplets and temperature profile in a vibrating electrode electroslag remelting process

Wang

Baleta

Wang³

et al. 2019

Open Physics

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In the present work, a transient full-coupled modelling approach has been put forward to study the effect of electrode tip on formation of metal droplets and temperature profile in the electromagnetically-controlled electroslag-remelting furnace with vibrating electrode. The electromagnetic field, momentum and energy conservation equations are solved simultaneously based on the finite volume method. The interface of slag and metal is traced using the volume of fluid approach. The results show that in the case of cone tip electrode the average dimension of metal droplets is smaller compared to the flat tip electrode. In addition, the bigger and stretched metal droplets are not observed with the cone tip electrode. The temperature fields with the cone tip electrode are distributed in a prominent periodic pattern compared to the case with flat tip electrode. The maximum temperature zone with the cone tip electrode is located along the z axial in the upper part of slag, not in the lower part. When the frequency changes from 0.17 Hz to 1 Hz, the maximum temperature reduces from 2050 K to 1985 K and the peak value of velocity decreases from 0.20 m/s to 0.125 m/s. When the vibration amplitude varies from 3mm to 6mm, the maximum temperature in the slag cover drops by 3.9% and the peak value of velocity rises by 16.7%.

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