Measurement model of molten steel flow velocity in the continuous casting mould based on the Seebeck principle

2021 ◽  
pp. 1-5
Author(s):  
Chen Tian ◽  
Lei Yuan ◽  
Xinglong Yao ◽  
Zhenli Liu ◽  
Yang Song ◽  
...  
Keyword(s):  
Continuous Casting ◽  
Flow Velocity ◽  
Molten Steel ◽  
Measurement Model ◽  
Continuous Casting Mould ◽  
Steel Flow

Influence of SEN depth and port angle on vertical electromagnetic brake effects in continuous casting mould

2017 ◽  
Vol 36 (2) ◽  
pp. 445-457 ◽  
Author(s):  
Zhuang Li ◽  
Engang Wang ◽  
Yu Xu ◽  
Lin Xu
Keyword(s):  
Continuous Casting ◽  
Molten Steel ◽  
Steel Slag ◽  
Processing Parameters ◽  
Electromagnetic Brake ◽  
Content Type ◽  
Narrow Side ◽  
Continuous Casting Mould ◽  
Steel Flow ◽  
Port Angle

Purpose To effectively control the molten steel flow and the stability of free surface in continuous casting mould, this paper aims to propose a new type electromagnetic brake technique, namely, vertical electromagnetic brake (V-EMBr). Its brake effect under special processing parameters such as submerged entry nozzle (SEN) depth and port angle is evaluated by the numerical simulation methods. Design/methodology/approach A couple three-dimensional mathematical model of fluid flow and static magnetic field was developed to investigate the behaviour of molten steel flow and steel/slag interface in the continuous casting mould, and a volume of fluid model is used to track the interfacial behaviour of molten steel and liquid slag by solving the continuity equation of the phase volume fraction. Findings The simulation results showed that the application of V-EMBr can significantly reduce the flow intensity in upper recirculation zone and decrease the meniscus height and the flow velocity of molten steel in the vicinity of narrow side of mould, which is beneficial to reduce the possibility of mould flux entrapment. Especially, the brake effect of V-EMBr has a little affected by the SEN depth and port angle, which is helpful for V-EMBr to better adapt the actual continuous casting process. Originality/value Compared to the conventional-level EMBr, the new proposed V-EMBr has the advantage to effectively control the molten steel flow and steel/slag interfacial fluctuation in the vicinity of narrow side of mould with a pair of magnetic fields, and its brake effect is less affected by the changes in continuous casting processing parameters.

Effects of U-Shape Inner Cooler on Flow and Solidification of Molten Steel in Slab Continuous Casting Mold

2011 ◽  
Vol 291-294 ◽  
pp. 423-427
Author(s):  
Yan Juan Jin ◽  
Xiao Chao Cui ◽  
Zhu Zhang
Keyword(s):  
Fluid Dynamics ◽  
Temperature Field ◽  
Flow Field ◽  
Continuous Casting ◽  
Molten Steel ◽  
Continuous Casting Mold ◽  
Slab Continuous Casting ◽  
Cooling Technology ◽  
Steel Flow

An inner-outer coupled cooling technology of molten steel for 1240×200mm slab continuous casting, that is to set an inner cooler—U shape pipes in the mold, is put forward in order to enhance the efficiency of transmitting heat and improve inner structure of billet. The flow status and solidification status of molten steel under coupling flow field and temperature field in inner-outer coupled cooling mold are simulated by using fluid dynamics software, and compare with those in traditional mold. It is found that setting inner cooler in the mold can make molten steel flow status even, which is favorable to floating up of the inclusion, quickening the solidification of steel liquid and improving the quality of billet.

Numerical Simulation of Inner-Outer Couple Cooling Slab Continuous Casting in the Filling Process

2012 ◽  
Vol 557-559 ◽  
pp. 2257-2260
Author(s):  
Yan Juan Jin ◽  
Xiao Chao Cui ◽  
Yan Xia Chen
Keyword(s):  
Temperature Field ◽  
Flow Field ◽  
Continuous Casting ◽  
Molten Steel ◽  
Solidification Rate ◽  
Surface Shape ◽  
Filling Process ◽  
Slab Continuous Casting ◽  
Free Surface Shape ◽  
Steel Flow

In the paper, flow status and solidification status of molten steel in inner-outer couple cooling mold in the filling process are simulated by using fluid dynamics software Flow-3d, and obtain distributing diagrams of flow field and temperature field and free-surface shape diagrams in the filling process. Influences of flow field and temperature field of filling process on solidification are analyzed in the slab continuous casting. It is indicated that inner cooler can improve molten steel flow status, which is favorable to inclusion in molten steel floating up, quicken the solidification rate of molten steel in the mold.

Influence of Inner Cooler on Flow of Molten Steel in Slab Continuous Casting Mold

2012 ◽  
Vol 217-219 ◽  
pp. 1942-1945
Author(s):  
Zhu Zhang ◽  
Yan Juan Jin ◽  
Jun Ting Zhang
Keyword(s):  
Fluid Dynamics ◽  
Continuous Casting ◽  
Molten Steel ◽  
Continuous Casting Mold ◽  
Casting Mold ◽  
Slab Continuous Casting ◽  
Cooling Technology ◽  
Steel Flow

In the paper a inner-outer couple cooling technology of molten steel for 1240×200mm slab continuous casting, that is to set an inner cooler-U shape pipes in the mold, is put forward in order to enhance the efficiency of transmitting heat and improve the flow status of molten steel. The flow status of molten steel in inner-outer couple cooling mold is simulated by using fluid dynamics software. It is found that setting inner cooler in the mold can make molten steel flow status even, which partly act as electromagnetic trig and is favorable to inclusion in molten steel floating up.

scholarly journals Melting and Flowing Behavior of Mold Flux in a Continuous Casting Billet Mold for Ultra-High Speed

Metals ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1165
Author(s):  
Jie Yang ◽  
Dengfu Chen ◽  
Fengting Qin ◽  
Mujun Long ◽  
Huamei Duan
Keyword(s):  
Continuous Casting ◽  
Molten Steel ◽  
High Speed ◽  
Mold Flux ◽  
Casting Process ◽  
Development Trend ◽  
Design And Optimization ◽  
Billet Continuous Casting ◽  
Ultra High Speed ◽  
Steel Flow

High casting speed coincides with the development trend of billet continuous casting, which significantly changes the casting characteristics. A mathematical model of the billet mold, which includes multiphase fluid flow, transient heat transfer, and solidification during ultra-high speed of the casting process was developed. The model is first applied to investigate the flow field of molten steel in the mold, studying the influence of steel flow upon the melting and flowing behavior of mold flux. The temperature and velocity distributions of the flux pool that formed above the molten steel surface are described. A parametric study on the melting temperature and viscosity of mold flux on liquid flux thickness and flow velocity is then carried out. Finally, the model is used to derive the relationship between interfacial tension and level fluctuations. The predictions provide an improved understanding of the melting and flowing behavior of mold flux in the billet mold and give the guidance for the design and optimization of mold flux for ultra-high speed of billet casting.

Optimization of argon injection into shroud of tundish during continuous casting: a numerical study

2021 ◽  
Vol 118 (6) ◽  
pp. 613
Author(s):  
Fengjun Chang ◽  
Liangjun Li ◽  
Ran Xu ◽  
Yufen Wang ◽  
Xudong Cui
Keyword(s):  
Mathematical Model ◽  
Continuous Casting ◽  
Flow Pattern ◽  
Molten Steel ◽  
Numerical Study ◽  
Dead Zone ◽  
Argon Injection ◽  
Motion Characteristics ◽  
Steel Flow ◽  
Current Word

In order to prevent molten steel reoxidation in the tundish during continuous casting, argon injection into the shroud is applied. The injected argon bubbles in molten steel may change the molten steel flow pattern in the tundish. Consequently, the ratios of dead zone, plunger zone and well-mixed zone would change. Also, the motion of inclusions in the molten steel of tundish would change resulting from argon injection. The current word developed a coupling multiphase flow mathematical model. Basing on the developed model, the present work has researched the influences of argon injection on the molten steel flow pattern, inclusion motion characteristics in the tundish.

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