(PDF) Contribution to Deoxidation of Austenitic Steels in ...
Deoxidation of steel with carbon under reduced pressure is often used for increasing the steel purity. Suitable units for this purpose in foundries are vacuum induction furnaces.
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Effect of Deoxidation Process on Inclusion and Fatigue ...
2018-2-5 55SiCrA spring steel was smelted in a vacuum induction levitation furnace. The liquid steel was treated by Si deoxidation, Al modification with Ca treatment and Al modification, and the steel samples were obtained with deformable Al 2 O 3-SiO 2-CaO-MgO inclusions closely contacted with steel matrix, Al 2 O 3-CaO-CaS-SiO 2-MgO inclusions surrounded by small voids or Al 2 O 3 (> 80 pct)-SiO
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Cleanliness Assessment of Steel Bars Produced From a
2013-8-2 deoxidation and calcium treatment that were carried out during the steelmaking process. Keywords: high frequency induction furnace, non-metallic inclusions, inclusions assessment, deoxidation, calcium treatment
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Deoxidation Equilibria among Mg, Al and O in Liquid Iron ...
signed high frequency induction furnace for a strong agita-tion of melt. Strong agitation of melt would result in a faster attainment of deoxidation equilibrium and a good separation of deoxidation products from iron melt. MgO and Al 2 O 3 crucibles were used to fix oxide activities in equilibrium with Mg, Al and O in iron melt. From the ex-
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Vacuum Induction Melting - ASM International
2014-12-12 deoxidation process and must be optimized through proper furnace power frequency and application procedure to prevent refractory lin-ing erosion, a potential problem particularly during the controlled but more vigorous CO boiling portion of the process. Process Sequence. Figure 4 shows a typical process profile for the VIM of nickel- and
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CN101225454A - Pre-deoxidation recarburization process
The invention relates to a pre-deoxidation and carburization craft of molten steel with slag in the electric-arc steelmaking furnace, comprising the following steps: (1) charging; (2) electrifying melting; (3) oxygen blowing to boost melting; (4) oxidation refining; (5) temperature measuring and sampling; (6) addition of deoxidizer (7) tapping.
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Steel Billet Making - Inductotherm Corp.
2021-10-13 Induction Power Window Ladle Systems combine the mobility, strength and refining flexibility of a steel ladle with the melting power, stirring action and precise temperature control of an induction furnace. Carrying out all processes, from pouring to refining, in the same container reduces production steps, increases energy savings and improves ...
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Common Misconceptions about Steel made through Arc
2020-8-27 This is because the arc furnace ionizes the nitrogen molecule to atoms that will be absorbed by the molten steel. With induction furnaces, the nitrogen content is lower although the oxygen content is higher. Finally, the alloy quick life value is lower in the induction furnace process than the arc furnace process.
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Melting and Refining Technology of High-Temperature
2012-3-5 Latrobe Steel Company, Latrobe, Pennsylvania Abstract ... the early sixties large vacuum induction furnace installations began to dominate the ... puters for charge material, furnace, and process control, and the advent of using sep- arate refining facilities revived the electric arc furnace and made it technically and ...
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Deoxidation Reaction - an overview ScienceDirect Topics
Deoxidation reactions can be described using the deoxidation equilibrium constant. A wide spectrum of deoxidation equilibria pertaining to the most common deoxidants for steel is summarized in Table 1-5-2; the table is a log-log plot of the concentration of oxygen in solution in liquid steel
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Effect of Ti and Zr Deoxidation Process on the Inclusions ...
The35kg ingot was refined with vacuum induction furnace by means of three various deoxidationprocesses in laboratory. From the steel-making point of view, effect of deoxidationprocess on inclusions and was analyzed. The fraction, size and distribution ofinclusions were studied with scanning electron microscope (SEM)and energy dispersive spectrometer (EDS) in three various deoxidation ...
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Deoxidation of steel [SubsTech]
2012-5-31 Method of deoxidation in vacuum utilizes carbon dissolved in steel as the deoxidizer according to the equation: [C] + [O] = {CO} where: [C] and [O] - carbon and oxygen dissolved in liquid steel; {CO} - gaseous carbon monoxide. The equilibrium constant of this chemical reaction is expressed as follows: K CO = p CO /(a C x a O) where: p CO - partial pressure of carbon monoxide in the
MoreEffect of Ti and Zr Deoxidation Process on the Inclusions ...
The35kg ingot was refined with vacuum induction furnace by means of three various deoxidationprocesses in laboratory. From the steel-making point of view, effect of deoxidationprocess on inclusions and was analyzed. The fraction, size and distribution ofinclusions were studied with scanning electron microscope (SEM)and energy dispersive spectrometer (EDS) in three various deoxidation ...
MoreDeoxidation Equilibria among Mg, Al and O in Liquid Iron ...
signed high frequency induction furnace for a strong agita-tion of melt. Strong agitation of melt would result in a faster attainment of deoxidation equilibrium and a good separation of deoxidation products from iron melt. MgO and Al 2 O 3 crucibles were used to fix oxide activities in equilibrium with Mg, Al and O in iron melt. From the ex-
More
Deoxidation furnaces - Type FD Deoxidation Furnaces
2021-9-8 DEOXIDATION FURNACES - TYPE FD. FD furnaces are used to prevent surface oxidation on items during annealing operations and to deoxidise finished products. They ensure uniform thermal treatments. Thanks to the use of a protective gas, the items come out deoxidised and bright. A stainless steel water tank for rapid cooling operations is also ...
More
Steelmaking based on inductive melting - Home ABP
2020-4-30 processes used to produce steel in diagrammatic form, the two main processes used to produce well over 90 % of all steel can be seen on the far left and far right. These are namely the lines "blast furnace/oxygen-converter" which primarily uses ore as the raw material, and the "electric arc furnace" with scrap as the main input basis [4].
MoreDeoxidation of steel [SubsTech]
2012-5-31 Method of deoxidation in vacuum utilizes carbon dissolved in steel as the deoxidizer according to the equation: [C] + [O] = {CO} where: [C] and [O] - carbon and oxygen dissolved in liquid steel; {CO} - gaseous carbon monoxide. The equilibrium constant of this chemical reaction is expressed as follows: K CO = p CO /(a C x a O) where: p CO - partial pressure of carbon monoxide in the
More
Production of Steel in Induction Furnace – IspatGuru
2019-5-26 Fig 1 Major thermal losses in induction furnace. The factors which affects the consumption of electrical energy in the furnace (Fig 2) include (i) dirt going in the furnace with scrap, (ii) rusty charge material, (iii) low bulk density of the scrap, (iv) recarburizing of steel when the steel is almost ready, (v) not using full power for melting, (vi) excessive formation of slag, (vii ...
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Simultaneous Desulfurization and Deoxidation of Molten ...
Steel, Ltd., 2, Nadahama-Higashimachi, Nada-ku, Kobe, Hyogo 657-0863 Japan. (Received on October 20, 2006; accepted on December 21, 2006) A new simultaneous desulfurization and deoxidation process of molten steel with magnesium vapor pro-duced in situby aluminothermic reduction of magnesium oxide is proposed. The pellets composed of MgO
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Understanding Zinc Penetration on Induction Furnace ...
2017-5-15 The sidewall buildup is a worse-case in cast iron melting, but it occurs to some extent in all iron melting. DeOX Metal Treatment molten-iron deoxidation eliminates all sidewall furnace build-ups, which greatly enhances the melting process. Inductor heated furnaces suffer loop plugging, which hinders furnace service life.
MoreMelting and Refining Technology of High-Temperature
2012-3-5 Latrobe Steel Company, Latrobe, Pennsylvania Abstract ... the early sixties large vacuum induction furnace installations began to dominate the ... puters for charge material, furnace, and process control, and the advent of using sep- arate refining facilities revived the electric arc furnace and made it technically and ...
More
Project Report on m.s. billet casting with induction ...
Detailed Project Report (DPR) on m.s. billet casting with induction furnace from steel scrap and sponge iron Present Market Position and Expected Future Demand, Technology, Manufacturing Process, Investment Opportunity, Plant Economics and Project Financials. comprehensive analysis from industry covering detailed reporting and evaluates the position of the industry by providing insights to the ...
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Electric Arc Furnace Steelmaking Process
2020-8-11 Electric Arc Furnace Steelmaking Process. 1. Feeding. The operation of adding molten iron or scrap steel to the electric furnace is the first step of the electric furnace steelmaking operation. 2. Slagging. The operation of adjusting the slag composition, alkalinity, viscosity and reaction ability in steel and iron production.
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Vacuum induction melting and deoxidation of nickel base ...
Vacuum induction melting and deoxidation of nickel base superalloy. Oxygen exists as a trace impurity element in the superalloy in the form of solid solution and oxide inclusion. Figure 1 shows the Al2O3 inclusion in the nickel-based superalloy.The presence of
MoreEffect of Ti and Zr Deoxidation Process on the Inclusions ...
The35kg ingot was refined with vacuum induction furnace by means of three various deoxidationprocesses in laboratory. From the steel-making point of view, effect of deoxidationprocess on inclusions and was analyzed. The fraction, size and distribution ofinclusions were studied with scanning electron microscope (SEM)and energy dispersive spectrometer (EDS) in three various deoxidation ...
MoreDeoxidation Equilibria among Mg, Al and O in Liquid Iron ...
signed high frequency induction furnace for a strong agita-tion of melt. Strong agitation of melt would result in a faster attainment of deoxidation equilibrium and a good separation of deoxidation products from iron melt. MgO and Al 2 O 3 crucibles were used to fix oxide activities in equilibrium with Mg, Al and O in iron melt. From the ex-
More
Effect of Deoxidation Process on Inclusion and Fatigue ...
2018-4-15 OSTI.GOV Journal Article: Effect of Deoxidation Process on Inclusion and Fatigue Performance of Spring Steel for Automobile Suspension
MoreDeoxidation furnaces - Type FD Deoxidation Furnaces
2021-9-8 DEOXIDATION FURNACES - TYPE FD. FD furnaces are used to prevent surface oxidation on items during annealing operations and to deoxidise finished products. They ensure uniform thermal treatments. Thanks to the use of a protective gas, the items come out deoxidised and bright. A stainless steel water tank for rapid cooling operations is also ...
MoreVacuum induction melting and deoxidation of nickel base ...
Vacuum induction melting and deoxidation of nickel base superalloy. Oxygen exists as a trace impurity element in the superalloy in the form of solid solution and oxide inclusion. Figure 1 shows the Al2O3 inclusion in the nickel-based superalloy.The presence of
MoreDeoxidation of steel [SubsTech]
2012-5-31 Method of deoxidation in vacuum utilizes carbon dissolved in steel as the deoxidizer according to the equation: [C] + [O] = {CO} where: [C] and [O] - carbon and oxygen dissolved in liquid steel; {CO} - gaseous carbon monoxide. The equilibrium constant of this chemical reaction is expressed as follows: K CO = p CO /(a C x a O) where: p CO - partial pressure of carbon monoxide in the
MoreSteelmaking based on inductive melting - Home ABP
2020-4-30 processes used to produce steel in diagrammatic form, the two main processes used to produce well over 90 % of all steel can be seen on the far left and far right. These are namely the lines "blast furnace/oxygen-converter" which primarily uses ore as the raw material, and the "electric arc furnace" with scrap as the main input basis [4].
MoreUnderstanding Zinc Penetration on Induction Furnace ...
2017-5-15 The sidewall buildup is a worse-case in cast iron melting, but it occurs to some extent in all iron melting. DeOX Metal Treatment molten-iron deoxidation eliminates all sidewall furnace build-ups, which greatly enhances the melting process. Inductor heated furnaces suffer loop plugging, which hinders furnace service life.
MoreSimultaneous Desulfurization and Deoxidation of Molten ...
Steel, Ltd., 2, Nadahama-Higashimachi, Nada-ku, Kobe, Hyogo 657-0863 Japan. (Received on October 20, 2006; accepted on December 21, 2006) A new simultaneous desulfurization and deoxidation process of molten steel with magnesium vapor pro-duced in situby aluminothermic reduction of magnesium oxide is proposed. The pellets composed of MgO
MoreProject Report on m.s. billet casting with induction ...
Detailed Project Report (DPR) on m.s. billet casting with induction furnace from steel scrap and sponge iron Present Market Position and Expected Future Demand, Technology, Manufacturing Process, Investment Opportunity, Plant Economics and Project Financials. comprehensive analysis from industry covering detailed reporting and evaluates the position of the industry by providing insights to the ...
More
PSMA .:. Pakistan Steel Melters Association
2019-7-17 Electric arc process. The heat required in this process is generated by electric arcs struck between carbon electrodes and the metal bath (Fig. 1). Usually, a charge of graded steel scrap is melted under an oxidising basic slag to remove the phosphorus. The impure slag is removed by tilting the furnace. A second limey slag is used to remove ...
MoreFactors Affecting the Service Life of Induction Furnace Lining
2021-7-23 Medium frequency induction furnace will be a variety of problems in the course inevitable, the life lining material is one of the greatest concerns. For the melting department, it is extremely important to analyze the factors affecting the life of the intermediate 1.
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