Refining and Decarburizing Steel-Degassing Process in the Melting Practice of Alloy Steels

Bauer, H.‐D.; Fleischer, Hans Joachim; Otto, Johanna

doi:10.1116/1.1315900

Cited by 3 publications

(2 citation statements)

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“…In secondary steelmaking, high-temperature refining principles under low vacuum have long been used for degassing and decarburization. Thermodynamic parameters published by Bauer et al [19] lead to vacuum refining procedures that remove undesired carbon with little loss of chromium and other alloying components. Emphasizing the vacuum degassing, Capurro et al [20] found a 60% decrease in inclusion density in liquid steel.…”

Section: Refining Aluminum At Low Pressurementioning

confidence: 99%

Modeling of Impurities Evaporation Reaction Order in Aluminum Alloys by the Parametric Fitting of the Logistic Function

Mitrašinović,

Nešković,

Polavder

et al. 2024

Materials

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Advancements in computer capabilities enable predicting process outcomes that earlier could only be assessed after post-process analyses. In aerospace and automotive industries it is important to predict parts properties before their formation from liquid alloys. In this work, the logistic function was used to predict the evaporation rates of the most detrimental impurities, if the temperature of the liquid aluminum alloy was known. Then, parameters of the logistic function were used to determine the transition points where the reaction order was changing. Samples were heated to 610 °C, 660 °C, 710 °C, and 760 °C for one hour, after which the chemical analyses were performed and evaporation rates were calculated for Cd, Hg, Pb and Zn elements. The pressure inside the encapsulated area was maintained at 0.97 kPa. Whereas parameters that define the evaporation rate increase with the temperature increase, the maximum evaporation rates were deduced from the experimental data and fitted into the logistic function. The elemental evaporation in liquid-aluminum alloys is the best defined by the logistic function, since transitions from the first to zero-order-governed evaporation reactions have nonsymmetrical evaporation rate slopes between the lowest and the highest evaporation rate point.

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Section: Refining Aluminum At Low Pressurementioning

confidence: 99%

Modeling of Impurities Evaporation Reaction Order in Aluminum Alloys by the Parametric Fitting of the Logistic Function

Mitrašinović,

Nešković,

Polavder

et al. 2024

Materials

View full text Add to dashboard Cite

show abstract

“…For a long time, high temperature refining principles at low vacuum conditions are employed for degassing and decarburization in secondary steelmaking. Bauer et al [4] presented thermodynamic parameters that lead to the vacuum refining processes where unwanted carbon is removed with minimal losses of chromium and other alloying elements.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic and kinetics investigation of elemental evaporation from molten Al7Si4Cu alloy

Mitrašinović

Odanović

2021

Thermochimica Acta

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Impurity removal and overall rate constant during low pressure treatment of liquid silicon

Mitrašinović

D'Souza

Utigard

2012

Journal of Materials Processing Technology

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Refining and Decarburizing Steel-Degassing Process in the Melting Practice of Alloy Steels

Abstract: 100)textured 3% silicon steel sheets by manganese removal and decarburization

Cited by 3 publications

References 0 publications

Modeling of Impurities Evaporation Reaction Order in Aluminum Alloys by the Parametric Fitting of the Logistic Function

Modeling of Impurities Evaporation Reaction Order in Aluminum Alloys by the Parametric Fitting of the Logistic Function

Thermodynamic and kinetics investigation of elemental evaporation from molten Al7Si4Cu alloy

Impurity removal and overall rate constant during low pressure treatment of liquid silicon

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