Melting Point and Viscosity Measurement of Continuous Casting Mold Flux with Volatiles

According to the rule of non-sinusoidal oscillation of continuous casting mold, a mathematical model was established to study the effects of oscillation parameters on the consumption rate of mold flux. The results indicated that the mold flux consumption rate is remarkably affected by the non-sinusoidal factor. This proves that the non-sinusoidal oscillation of mold contributes to increase the flux consumption. Moreover, the amplitude and frequency of mold oscillation have effects on mold flux consumption rate. The non-sinusoidal oscillation parameters must be optimized.

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Effect of CaF2 on the Viscosity and Microstructure of CaO–SiO2–Al2O3 Based Continuous Casting Mold Flux

Metals ◽

10.3390/met9080871 ◽

2019 ◽

Vol 9 (8) ◽

pp. 871

Author(s):

Xingjuan Wang ◽

Hebin Jin ◽

Liguang Zhu ◽

Ying Xu ◽

Ran Liu ◽

...

Keyword(s):

Continuous Casting ◽

Mold Flux ◽

Network Formation ◽

Degree Of Polymerization ◽

Slag Viscosity ◽

Continuous Casting Mold ◽

Flow Activation Energy ◽

Casting Mold ◽

Fluorine Ions ◽

Caf2 Content

In this study, a CaO–SiO2–Al2O3-based continuous casting mold flux was designed using the FactSage thermodynamics software to determine the composition range of CaF2. The viscosity characteristics of the mold flux were determined using a rotating viscometer. The results show that the constant temperature viscosity at 1300 °C decreases gradually as CaF2 content is increased from 3% to 11% in the CaO–SiO2–Al2O3-based slag. Viscosity is reduced from 0.854 to 0.241 Pa·s, viscous the flow activation energy is reduced from 157.74 to 114.34 kJ·mol−1, and the break temperature is reduced from 1280 to 1180 °C. Furthermore, when the CaF2 content is increased from 3% to 11%, the number of nonbridging fluorine bonds (Al–F structure and Si–F structure) in the melt increases to 287, the number of bridging fluorine bonds (Al–F–Al structure, Si–F–Si structure, and Si–F–Si structure) is only 17, and the network rupture of fluorine ions in the system is larger than the network formation. Consequently, both the degree of polymerization and viscosity are reduced.

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Thermophysical Properties of Continuous Casting Mold Flux for Advanced Steel Developments

Transactions of the Indian Institute of Metals ◽

10.1007/s12666-013-0288-0 ◽

2013 ◽

Vol 66 (5-6) ◽

pp. 577-585 ◽

Cited By ~ 13

Author(s):

Sung Suk Jung ◽

Gi Hyun Kim ◽

Il Sohn

Keyword(s):

Continuous Casting ◽

Thermophysical Properties ◽

Mold Flux ◽

Continuous Casting Mold ◽

Casting Mold

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Effect of Basicity on Continuous Casting Mold Flux Properties

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.567.62 ◽

2012 ◽

Vol 567 ◽

pp. 62-65 ◽

Cited By ~ 4

Author(s):

Xin Hua Zhu ◽

Li Guang Zhu ◽

Yu Liu ◽

Peng Fei Wang

Keyword(s):

Continuous Casting ◽

Mold Flux ◽

Chemical Properties ◽

Physical And Chemical Properties ◽

Continuous Casting Mold ◽

Casting Mold ◽

Flux Function ◽

Physical And Chemical ◽

The Relationship ◽

And Chemical Properties

Basicity is an important parameter which can determine the performance of continuous casting fluxes, and it have different effects on flux of various physical and chemical properties. This paper discusses the relationship and impact between basicity and the physical and chemical properties of flux, Which proved how changes of basicity affect physical and chemical properties of flux, and then how it affects the flux function .

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