Effect of basicity on crystallization, heat transfer, and structure of mould flux for high-speed thin slab continuous casting

2021 ◽  
pp. 1-23
Author(s):  
Zhipeng Yuan ◽  
Liguang Zhu
Keyword(s):  
Heat Transfer ◽  
Continuous Casting ◽  
High Speed ◽  
Thin Slab ◽  
Slab Continuous Casting ◽  
Mould Flux ◽  
Crystallization Heat

The Mould Flux Heat Conduction Performance Designing of High Carbon Steel for Thin Slab Continuous Casting

2014 ◽  
Vol 1033-1034 ◽  
pp. 1313-1316
Author(s):  
Hui Rong Li ◽  
Li Gen Sun ◽  
Li Qun Ai
Keyword(s):  
Heat Transfer ◽  
Heat Flux ◽  
Carbon Steel ◽  
Continuous Casting ◽  
Orthogonal Experiment ◽  
High Carbon Steel ◽  
Thin Slab ◽  
High Carbon ◽  
Slab Continuous Casting ◽  
Mould Flux

Heat transfer of the mould flux between the mould and the strand is very complicated, especially for the high carbon steel thin slab continuous casting. In this research the orthogonal experiment has been carried out, and the results showed that: the effect for the heat flux form strong to weak is: R>Na2O>F>MgO>BaO. and in the experiment range, with the R increasing, when the R, Na2O content and the F- content are increasing, the heat flux would be decreasing; with the MgO content increasing, the crystallization temperature would getting fluctuant; with the BaO content increasing, the heat flux would getting fluctuant, when its content is around 6%, the heat flux is reach its summit.

Effects of Na2CO3 on properties of low fluoride content mould flux for thin slab continuous casting

2011 ◽  
Vol 23 ◽  
pp. S167-S169 ◽  
Author(s):  
Yanqing Lu ◽  
Guodong Zhang ◽  
Maofa Jiang ◽  
Haixiao Liu ◽  
Ting Li
Keyword(s):  
Continuous Casting ◽  
Fluoride Content ◽  
Thin Slab ◽  
Slab Continuous Casting ◽  
Mould Flux

Effects of NaF on Mould Flux Properties for Thin Slab Continuous Casting

2012 ◽  
Vol 455-456 ◽  
pp. 134-138 ◽  
Author(s):  
Yan Qing Lu ◽  
Guo Dong Zhang ◽  
Xiao Feng Yu
Keyword(s):  
Continuous Casting ◽  
Thin Slab ◽  
Slab Continuous Casting ◽  
Mould Flux

Interfacial Heat Flux Estimation in a Funnel Shaped Mould and Analysis of Solidification Characteristics in Thin Slab Continuous Casting

2021 ◽  
Author(s):  
Pedduri Jayakrishna ◽  
Ananda Vaka ◽  
Saurav Chakraborty ◽  
Suvankar Ganguly ◽  
Prabal Talukdar
Keyword(s):  
Heat Flux ◽  
Continuous Casting ◽  
Molten Steel ◽  
High Speed ◽  
Thermal Characteristics ◽  
Submerged Entry Nozzle ◽  
Casting Process ◽  
Transfer Model ◽  
Thin Slab ◽  
Slab Continuous Casting

Abstract An inverse heat transfer model based on Salp Swarm optimization algorithm is developed for prediction of heat flux at the hot faces of a mould in thin slab continuous casting. The industrial mould considered in this work is a funnel-shaped mould having complex arrangement of cooling slots and holes. Significant variations of heat flux along the casting direction, as well as across the width are observed. Subsequently, the obtained heat flux profile estimated by the inverse method is used to analyse the fluid flow and thermal characteristics of the solidifying steel strand inside the mould. Three different recirculatory zones are present due to molten steel flow, affecting the thermal and solidification characteristics significantly. The effect of these recirculatory flows on remelting phenomenon, and consequent formation of thinner shell at the mould outlet leading to quality control issues in the casting process have been discussed. Another practical issue of depression in the wide face shell thickness at the mould outlet has been identified, and its cause has been related to the location of the Submerged Entry Nozzle and the high speed of the molten steel inflow.

The Overview on Sticking Breakout Behavior for Thin Slab Continuous Casting

2014 ◽  
Vol 1022 ◽  
pp. 201-204 ◽  
Author(s):  
Hui Rong Li ◽  
Li Gen Sun ◽  
Li Qun Ai
Keyword(s):  
Continuous Casting ◽  
Casting Speed ◽  
Hot Spot ◽  
Casting Process ◽  
Alloy Element ◽  
Thin Slab ◽  
Slab Continuous Casting ◽  
High Casting Speed ◽  
Mould Flux ◽  
Wear And Tear

Breakout is the most detrimental event associated with the continuous casting process, with the overview of the sticking breakout behavior, a lot of valuable things had been acquired. For the mechanism of the sticking breakout forming, the key for the breakout prevention is decreasing the probability of the hot spot; the content of the carbon or alloy element, the wear and tear of the mould corner, the mould flux, the fluctuation of the casting speed and the fluctuation of the meniscus are easy to cause the sticking; and with high casting speed and the funnel mould, the thin slab continuous casting is more easier to lead to sticking breakout than the normal strand.

Effects of B2O3 on Properties of Low Fluoride Content Mould Flux for Thin Slab Continuous Casting

2011 ◽  
Vol 233-235 ◽  
pp. 805-808 ◽  
Author(s):  
Yan Qing Lu ◽  
Guo Dong Zhang ◽  
Mao Fa Jiang
Keyword(s):  
Activation Energy ◽  
Surface Tension ◽  
Continuous Casting ◽  
Melting Temperature ◽  
Fluoride Content ◽  
Thin Slab ◽  
Slab Continuous Casting ◽  
Mould Flux ◽  
Effective Role

In order to reduce fluorine pollution, partial fluoride could be replaced by B2O3 in mould flux. The effects of B2O3 on properties of low fluoride content mould flux for thin slab continuous casting were studied. The properties included melting temperature, viscous characteristics, fluidity, surface tension and Al2O3 inclusion adsorption. The results showed that with the increase of B2O3 content, melting temperature, viscosity, viscous activation energy and surface tension of mould flux decreased obviously, fluidity increased, and Al2O3 inclusion adsorption of mould flux changed little. The B2O3 could play effective role when its content was less than 6%. The results would play a guiding role in designing of low fluoride content mould flux for thin slab continuous casting.

scholarly journals Development of High-quality and High-speed Thin Slab Continuous Casting Technology.

Materia Japan ◽  
1997 ◽  
Vol 36 (6) ◽  
pp. 625-627
Author(s):  
Sei Hiraki ◽  
Takashi Kanazawa ◽  
Masayuki Kawamoto ◽  
Kazuharu Hanazaki ◽  
Toshihiko Murakami
Keyword(s):  
Continuous Casting ◽  
High Speed ◽  
Thin Slab ◽  
High Quality ◽  
Slab Continuous Casting ◽  
Casting Technology

The Mould Flux Viscosity Designing of High Carbon Steel for Thin Slab Continuous Casting

2014 ◽  
Vol 1022 ◽  
pp. 48-51
Author(s):  
Hui Rong Li ◽  
Li Gen Sun ◽  
Li Qun Ai
Keyword(s):  
Carbon Steel ◽  
Continuous Casting ◽  
Melting Temperature ◽  
Orthogonal Experiment ◽  
High Carbon Steel ◽  
Thin Slab ◽  
High Carbon ◽  
Slab Continuous Casting ◽  
Mould Flux

Viscosity is very important for the high carbon steel for thin slab continuous casting, in this research the orthogonal experiment has been carried out, and the results showed that: the effect for the flux viscosity form strong to weak is: R>F>BaO>Na2O>MgO. and in the experiment range, with the R increasing, when the R is between 0.80 and 0.90, the flux viscosity is diminished slowly; but when the R is bigger than 0.90, the flux viscosity is diminished sharply; Na2O,MgO and F- could decrease the flux viscosity; BaO could lower the melting temperature of the flux to decrease the flux viscosity.

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