Estimation of Lubrication and Heat Transfer by Measurement of Friction Force in Mold

Odagaki, Tomoya; Aramaki, Norichika; Miki, Yuji

doi:10.2355/isijinternational.isijint-2017-562

Cited by 5 publications

(4 citation statements)

References 15 publications

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“…Some factors can damage the hot face of the casting wheel and produce permanent distortion and cracks, for example, alternately affected by rapid cooling and rapid heating loads during one rotation of the casting wheel, the friction force generated by dragging the ingot will also damage the hot face [29][30] . At the same time, the impact of molten metal on the hot face will aggravate distortion and crack propagation.…”

Section: Effect Of Grinding Thickness On Thermal and Mechanical Behav...mentioning

confidence: 99%

Thermal and mechanical behavior of casting copper alloy wheel during wheel and belt continuous casting process

Gao,

Peng

2024

China Foundry

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The wheel and belt continuous casting process, represented by the continuous Properzi technology [1] and the Southwire Continuous Rod (SCR) technology [2] , is an important method for producing copper cast ingot and aluminum cast ingot. The flexible spray water system makes the molten metal in the casting wheel solidify faster, so this process is more energy-saving and efficient. The casting wheel made of copper alloy is the key component of the wheel and belt continuous casting machine, which is important for the production continuity. However, considering the poor working conditions and mechanical damage, the casting wheel, as the mold of the wheel and belt continuous caster, needs to be repaired frequently.A large number of studies have analyzed the thermal and mechanical behavior of the molds during the continuous casting process by various mathematical models. The complex physical phenomena in the

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Section: Effect Of Grinding Thickness On Thermal and Mechanical Behav...mentioning

confidence: 99%

Thermal and mechanical behavior of casting copper alloy wheel during wheel and belt continuous casting process

Gao,

Peng

2024

China Foundry

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“…Mold flux and its flux film can effectively realize heat transfer and lubrication between mold and steel shell. The physicochemical properties of mold flux are crucial for the efficiency of the continuous casting process, and the reasonable structures of flux film are significant to ensure the coordination between heat transfer and lubrication.Thus, they are paid more and more attention to maintaining the stability of the continuous casting process and producing the high-quality steel [5][6][7][8] .…”

Section: Introductionmentioning

confidence: 99%

Effects of Mineral Raw Materials on Melting and Crystalline Properties of Mold Flux and Mineralogical Structures of Flux Film for Casting Peritectic Steel Slab

et al. 2023

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During peritectic steel continuous casting, mold flux properties and flux film structures play significant roles in controlling slab quality. In this study, mold fluxes and flux films for casting peritectic steel slab were obtained using mineral raw materials such as quartz, wollastonite, fluorite, soda ash and others. The effects of mineral raw materials on mold flux properties and flux film structures were investigated through the measurement of melting point, viscosity, crystallization temperature, critical cooling rate, crystallization ratio and crystalline phase content. The results indicated that with increasing the quartz addition (16 to 24 mass%) and the wollastonite addition (11 to 19 mass%) in mineral raw materials, the melting point, viscosity and wollastonite content of flux film increased, while the crystallization temperature, critical cooling rate, crystallization ratio and cuspidine content of flux film decreased. The melting point, viscosity and wollastonite content of flux film reduced with increasing the fluorite addition (8 to 16 mass%) and soda ash addition (10 to 18 mass%) in mineral raw materials. Furthermore, compared with soda ash, the fluorite predominantly enhanced the crystallization temperature, critical cooling rate, crystallization ratio, cuspidine content of flux film. In addition, it was showed that the heat transfer performance and the slab quality might be primarily attribute to the crystallization ratio and cuspidine content of flux film. These results provided a theoretical foundation for optimizing the mold flux of the peritectic steel and were vital to improving the slab quality.

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“…11) It was also reported that the rare earth oxides have a great effect on the melting temperature, viscosity, [12][13][14] structure [15][16][17][18][19] and crystallization 18,20) of mold fluxes. Specifically, the melting temperature and the viscosity property have direct influence on the lubrication between the solidified shell and the casting mold, [21][22][23] even the quality of the casting block. A appropriate value of viscosity is preferred to absorb inclusions and benefits the lubrication.…”

Section: Introductionmentioning

confidence: 99%

Effects of CeO2 on Melting Temperature, Viscosity, and Structure of CaF2-bearing and B2O3-containing Mold Fluxes for Casting Rare Earth Alloy Heavy Rail Steels

et al. 2019

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Rare earth have been widely used in the heavy rail steels to improve the impact toughness, yield strength, and high-temperature plasticity by deforming inclusions and refining grains. However, amounts of rare earth oxides with high melting temperatures can be generated and enter the mold fluxes, which has a significant influence on the lubrication and the heat transfer capability of mold fluxes and even the smooth of the continuous casting process. Thus in this work, effects of different CeO 2 contents on melting temperature, viscosity, and structure of the CaF 2-bearing mold fluxes and the B 2 O 3-containing mold fluxes for casting the rare earth alloy heavy rail steels were investigated systemically. Besides, the mechanisms of the viscosity and structure were discussed. Results show that CeO 2 increases the melting temperature and decreases the viscosity at high temperature of both two mold fluxes. The break temperature of the CaF 2-bearing mold fluxes increases heavily with the addition of CeO 2. Analyses of Raman spectra and the 11 B magic angle spinning nuclear magnetic resonance spectra (11 B MAS NMR) show that CeO 2 enhances the de-polymerization of the network structure of two mold fluxes, leading to the decrease of viscosity at each temperature.

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Estimation of Lubrication and Heat Transfer by Measurement of Friction Force in Mold

Cited by 5 publications

References 15 publications

Thermal and mechanical behavior of casting copper alloy wheel during wheel and belt continuous casting process

Thermal and mechanical behavior of casting copper alloy wheel during wheel and belt continuous casting process

Effects of Mineral Raw Materials on Melting and Crystalline Properties of Mold Flux and Mineralogical Structures of Flux Film for Casting Peritectic Steel Slab

Effects of CeO<sub>2</sub> on Melting Temperature, Viscosity, and Structure of CaF<sub>2</sub>-bearing and B<sub>2</sub>O<sub>3</sub>-containing Mold Fluxes for Casting Rare Earth Alloy Heavy Rail Steels

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