Origin of Nonmetallic Inclusions and Ways of Alleviating Their Contamination of Steel

Golubtsov, V. A.; Voronin, A. A.; Tetyueva, T. V.; Рощин, В. Е.; Usmanov, R. G.

doi:10.1007/s11015-005-0068-0

Cited by 8 publications

(4 citation statements)

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“…The technical-economic advantages from use of powder wire in comparison with blowing of powder in stream of argon and introducing of pieces are repeatedly discussed in many samples. By the expert data, only replacement power blowing by introduction of powder wire economy of current expense reaches 3$/t [1]. Due to small-dispersed fraction of reagents and their introduction to the lowest layers of melts the further increasing of elements assimilation degree and exactness of chemical composition are achieved.…”

Section: Technical-economic Efficiency Of Cast Iron and Steel Process...mentioning

confidence: 99%

Untitled

2019

EME

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Modern secondary steelmaking represents the wide set of technological processes and aggregates, devices and systems. Many of them are characterized by considerable cost and needs in expensive service. Various variants of technical-economic advantages are shown, which are achieved by different ways as by production, as by exploitation of metallic products by customers. The concrete technical-economic advantages are shown at the sample of melt treatment by injection of metallurgical wire with different fillers.

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Section: Technical-economic Efficiency Of Cast Iron and Steel Process...mentioning

confidence: 99%

Untitled

2019

EME

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“…Rare-earth metals possess high affinity to oxygen, sulfur and phosphorus as well as to some non-ferrous metals; they have the ability to comminute the structure of a cast metal and reduce parameters of anisotropy. There is information that application of complex alloys containing calcium, barium and REM for metal working allows enhancing resistance to corrosion of tube steel [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Phase Equilibria in a Liquid Metal of Fe-La-Ce-O System at 1600 °С

Михайлов

Makrovets

Samoilova

2020

SSP

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Thermodynamic modeling of phase equilibria in a liquid metal of Fe–La–Ce–O system at 1600 °С, using the technique of constructing the solubility surfaces for the components of a metal, was carried out. The calculation technique allowed assessing the depth of liquid iron de-oxidation at a complex use of lanthanum and cerium as deoxidizing agents. Also, diagrams of de-oxidants’ consumption for one ton of liquid oxygen-containing iron were calculated in the course of the work. Carrying out a calculation of the solubility surfaces for the components of a metal required simulation of phase diagrams of the following oxide systems: FeO–La2O3–Ce2O3, FeO–CeO2–La2O3, CeO2–La2O3–Ce2O3. The obtained results might be of interest for optimization of the use of rare-earth metals in steelmaking technology.

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“…The data were obtained during the casting of steel 10G2FB for slabs of 0.25x1.65 and 0.30x1.85m. There is also a method for modifying steel on casting (the Modinar method), which was developed in the 1970s and 1980s [7][8][9]. At the organization of work on this method inexpensive and compact mechanical devices-batchers were used, which are simple in manufacturing and operation.…”

Section: Introductionmentioning

confidence: 99%

Methods for Improving the Efficiency of Steel Modifying

Bakin

Михайлов

Golubtsov

et al. 2019

MSF

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In connection with the need to improve the quality characteristics of metal products, metallurgists are faced with the task of finding new effective methods for secondary steel processing. It is known that the use of simple, two-component materials does not significantly improve the quality of the metal. Complex modifiers with alkaline-earth elements are increasingly used for the modifying processing of steel. These modifiers allow to influence both the metal structure and the shape, phase composition and physical properties of nonmetallic inclusions. At the same time, it is known that barium and strontium practically do not dissolve in steel and are removed from the alloy in the extremely short time. The ability of barium and strontium alloys to deoxidize and desulphurize is low because of the large atomic mass of these elements. The modifying effect of alkaline-earth elements on the properties of steel is undeniable. This effect can be explained by the ability of barium and strontium to affect the magnitude of inter-phase tension in the event of contact with the phase boundary. The purpose of this work was to generalize the industrial experience of using multicomponent alloys with alkaline-earth elements for modifying of steel. Data on the effects of alloys with alkaline-earth elements on the properties of metals are given, as well as technological features of the use of complex alloys with alkaline-earth metals in steelmaking. Thus, it is noted that in conditions of large-scale steelmaking, a very important factor is the limited time in time of the modifying effect of alloys with alkaline-earth metals, which dictates the necessity of transferring the process of modification directly to casting.

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Origin of Nonmetallic Inclusions and Ways of Alleviating Their Contamination of Steel

Cited by 8 publications

References 1 publication

Untitled

Untitled

Phase Equilibria in a Liquid Metal of Fe-La-Ce-O System at 1600 °С

Methods for Improving the Efficiency of Steel Modifying

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