Effect Of Slag Consumption In Esr On Metal Composition And Process Technological Parameters

Lisova, L.A.; Stovpchenko, Ganna; Medovar, L.B.; Petrenko, V.L.

doi:10.15407/sem2017.02.01

Sovrem. elektrometall.

2017

DOI: 10.15407/sem2017.02.01

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Effect Of Slag Consumption In Esr On Metal Composition And Process Technological Parameters

L.A. Lisova¹,

Ganna Stovpchenko²,

L.B. Medovar³

et al.

Abstract: описані можливі витрати шлаку при электрошлаковому переплаві. оцінено кількість витрат на утворення гарнісажу різної товщини (1, 3, 5, 10 мм) при переплаві великовагового злитка з використанням шлаків аНФ-39 і аНФ-28. Розглянуті зміни компонентного складу системи газ-шлак-метал, що зумовлені зменшенням маси шлаку на утворення гарнісажу та у випадку компенсації цих витрат. Досліджено вплив зміни кількості шлаку на технологічні параметри плавки ЕШП. бібліогр. 17, табл. 5, іл. 5. К л ю ч о в і с л о в а : електро… Show more

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Cited by 3 publications

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Mass Transfer in Electroslag Processes with Consumable Electrode and Liquid Metal

Stovpchenko¹,

Sybir²,

Polishko³

et al. 2020

Usp. Fiz. Met.

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Experimental and numerical comparisons of mass transfer processes during the electroslag remelting with consumable electrode (ESR) and electroslag refining with liquid metal (ESR LM) showed their identical refining capacity, despite the smaller both the slag–metal contact surface (twice) and metal overheat (by 70–95 K) in the latter case. As revealed, due to effect of metal movement inside the liquid metal drop, it moves in liquid slag faster than a solid particle of the same diameter. Under comparable conditions, it is experimentally confirmed that desulphurization at the ESR takes place mainly on the contact surface between the slag and metal baths, but not in the liquid metal film at the tip of a consumable electrode.

show abstract

Mass Transfer in Electroslag Processes with Consumable Electrode and Liquid Metal

Stovpchenko¹,

Sybir²,

Polishko³

et al. 2020

Usp. Fiz. Met.

View full text Add to dashboard Cite

show abstract

Modern electroslag technologies of electrode remelting and processing of liquid metal (review)

Medovar¹,

Polishko²,

Petrenko³

et al. 2020

Theory and Practice of Metallurgy

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Objective. The results of the analysis of advanced technologies of electroslag remelting are presented. Results It is shown that ESR today is the main and most challenging in obtaining of high quality metal. Protection of the melting chamber and the electrode from the atmosphere by inert gas (IESR) or melting under pressure (PESR) prevents oxidation, which is especially important during remelting of the steels and alloys with high content of easily oxidizable elements. Refusal to use a consumable electrode in the classical ESR in favor of liquid metal, provided by the use of current-suppling mold, is an effective solution to the problem of its manufacture (manufacturing price reaches 40-60% of the cost of ingot production, and in some cases impossible) and reduce energy costs. Scientific novelty. During ESR LM, there is a decrease in temperature of slag and overheating of metal in comparison with classical ESR , the volume of liquid metal bath decreases that followed by improving conditions of ingot formation, at the expense of decrease in development of segregation processes and gives the chance to receive metal of homogeneous composition and structure. Practical significance. The advantages of the new ESR processes are a wide variation of the metal feed rate, less metal overheating and a flat bath, which provides molding with a homogeneous and defect-free internal structure and a smooth surface.

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Thermodynamics of interactions and physical properties of slags of 30CaF2/30CaO/30Al2O3 (SiO2, MgO) system at electroslag remelting

Lisova¹,

Stovpchenko²,

Goncharov³

et al. 2020

Sovrem. elektrometall.

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Effect Of Slag Consumption In Esr On Metal Composition And Process Technological Parameters

Cited by 3 publications

References 3 publications

Mass Transfer in Electroslag Processes with Consumable Electrode and Liquid Metal

Mass Transfer in Electroslag Processes with Consumable Electrode and Liquid Metal

Modern electroslag technologies of electrode remelting and processing of liquid metal (review)

Thermodynamics of interactions and physical properties of slags of 30CaF2/30CaO/30Al2O3 (SiO2, MgO) system at electroslag remelting

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