Mathematical Modeling of the Temperature Field in Continuous Casting Mold Region by Considering the Properties of Powders

Nakato, Hakaru; Muchi, Iwao

doi:10.2355/tetsutohagane1955.66.1_33

Cited by 13 publications

(3 citation statements)

References 4 publications

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“…The heat flux calculated with the model and given in Fig. 11 shows excellent agreement with that observed by Nakato et al 26) Observed local heat flux 11,27) just below the meniscus is also plotted against casting speed in Fig. 12 with that calculated by the present model.…”

Section: Validity Of the Modelsupporting

confidence: 77%

A Mathematical Model for Prediction of Thickness of Mould Flux Film in Continuous Casting Mould.

2002

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Model of Flux InfiltrationAs shown in Fig. 1, the level of meniscus on the mould wall is set as the origin of the coordination. The x-axis of the system is in the direction along the length of the strand. The y-axis is drawn in parallel to the level of the liquid steel. The lubrication with the mould flux film in the area between the mould and the strand is represented in the form of a hydrodynamic lubrication with a viscous fluid between two non-parallel surfaces. The temperature distribution in ISIJ International, Vol. 42 (2002)

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Section: Validity Of the Modelsupporting

confidence: 77%

A Mathematical Model for Prediction of Thickness of Mould Flux Film in Continuous Casting Mould.

2002

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“…Wolf [2] pointed out that Q s is an extremely valuable process control variable. * Q t = 0.6η −0.15 Nakato [28] * * * Q s = ρ slag (0.143 − 0.003η(f/60)) Kitagawa [29] * * * Q s = 0.0085t P f/V c Noguchi [9] * * *…”

mentioning

confidence: 99%

The factors affecting powder consumption of mould fluxes

Saraswat¹,

Fox²,

Mills³

et al. 2004

Scand Jof Metallurgy

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Powder consumption, Q s , is an important process variable in the continuous casting of steel but there is no agreement on the factors affecting Q s . This study seeks to identify those factors which have an effect on Q s . A large database containing powder consumption values and casting conditions, mould flux and steel composition data from a large number of steelworks has been analysed using statistical techniques to identify those factors which have significant effect on powder consumption. The following parameters, in decreasing order, were found to be significant (at the 95% confidence level): casting speed, viscosity, stroke length, oscillation frequency and break temperature.

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“…Many researchers have illustrated the schematic drawings of the part of meniscus in the mold [1][2][3][4][5][6][7][8][9] and one example of these drawings is shown in Fig. 1.…”

Section: Introductionmentioning

confidence: 99%

Relation between the Traces of Nucleation on the Surface and Grain in the Condition of Continuous Casting of Steel

et al. 2008

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They also found discs in Al-Cu alloys. They also made metallurgical characterization on discs. They concluded that the disc was a nucleation site and alloy melt did not un- Vol. 48 (2008), No. 3, pp. 270-276 Relation Control of nucleation on the surface of solidified shell is of importance to establish the whole structure of continuously-cast products. In the conventional continuous casting of steel, the nucleation of steel takes place on the molten state of mold flux. Lab-scale dipping tests have been carried out, where the solidification satisfied the above-mentioned condition. Changing the material of chill block and mold flux, the cooling rates of initial solidification have been varied systematically. The detailed observations of the surfaces and cross section of solidified shells have been made.The grain size was affected by cooling rate and decreased monotonously with increasing cooling rate. Many small protrusions have been found on the surface of the solidified shell. They resembled discs as Biloni et al. named. The density of discs was affected by cooling rate and increased with increasing cooling rate. The effective nucleation ratio was defined as the ratio between the number of grains and that of discs. The effective nucleation ratio obtained was a few percent and indicated small dependence on cooling rate in the range of this study.KEY WORDS: initial solidification; nucleation; dendrite; grain; disc.

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Mathematical Modeling of the Temperature Field in Continuous Casting Mold Region by Considering the Properties of Powders

Cited by 13 publications

References 4 publications

A Mathematical Model for Prediction of Thickness of Mould Flux Film in Continuous Casting Mould.

A Mathematical Model for Prediction of Thickness of Mould Flux Film in Continuous Casting Mould.

The factors affecting powder consumption of mould fluxes

Relation between the Traces of Nucleation on the Surface and Grain in the Condition of Continuous Casting of Steel

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