Effect of Flow Field on Surface Slag Entrainment and Inclusion Adsorption in a Continuous Casting Mold

2019 ◽  
Vol 91 (2) ◽  
pp. 1900437 ◽  
Author(s):  
Kai-Tian Zhang ◽  
Jian-Hua Liu ◽  
Heng Cui
Keyword(s):  
Flow Field ◽  
Continuous Casting ◽  
Continuous Casting Mold ◽  
Casting Mold ◽  
Slag Entrainment

Effect of Exit Shape of Submerged Entry Nozzle on Flow Field and Slag Entrainment in Continuous Casting Mold

2020 ◽  
Vol 51 (6) ◽  
pp. 2862-2870
Author(s):  
Meijuan Gan ◽  
Weijie Pan ◽  
Qiangqiang Wang ◽  
Xubin Zhang ◽  
Shengping He
Keyword(s):  
Flow Field ◽  
Continuous Casting ◽  
Submerged Entry Nozzle ◽  
Continuous Casting Mold ◽  
Casting Mold ◽  
Slag Entrainment

Numerical Simulation of Flow Field in Bloom Continuous Casting Mold with Electromagnetic Stirring

2010 ◽  
Vol 146-147 ◽  
pp. 272-276 ◽  
Author(s):  
Jing Zhang ◽  
En Gang Wang ◽  
An Yuan Deng ◽  
Xiu Jie Xu ◽  
Ji Cheng He
Keyword(s):  
Magnetic Field ◽  
Numerical Simulation ◽  
Flow Field ◽  
Continuous Casting ◽  
Tangential Velocity ◽  
Electromagnetic Stirring ◽  
Continuous Casting Mold ◽  
Frequency Increase ◽  
Velocity Increase ◽  
Casting Mold

A coupled numerical simulation of magnetic field and flow field was conducted basing on Φ250mm bloom during continuous casting with electromagnetic stirring.The distribution of the flow field was analyzed in different current and frequency.At the same current,the velocity first decrease and then increase as the frequency increase along the casting direction.At the same frequency, tangential velocity is dominant in the radial of EMS center,velocity increase with the current. Considered the results of numerical simulation,the optimized EMS parameters of Φ250mm bloom are the stirring current of 480A and the stirring frequency of 3Hz.

Simulation and Optimization of Flow Field in the Mold of Slab Continuous Casting

2014 ◽  
Vol 900 ◽  
pp. 72-77
Author(s):  
Yue Xin Wang ◽  
Zhi Fang Zhang ◽  
Yu Ting Guo
Keyword(s):  
Flow Field ◽  
Continuous Casting ◽  
Field Distribution ◽  
Continuous Casting Mold ◽  
Casting Mold ◽  
Simulation And Optimization ◽  
Slab Continuous Casting

For a period of time, because of a steel factorys frequent breakout , through monitoring the breakout slab cover, One of the important reasons for breakout is unreasonable flow field distribution in the mold. Through simulation this thesis analyzes how the parameters such as draw speedsubmerged nozzle affect the condition of flow field in the continuous casting mold , optimizing submerged nozzles structure and size which are fit for slab continue caster craftwork.

scholarly journals Comparison of the Flow Field in a Slab Continuous Casting Mold between the Thicknesses of 180 mm and 250 mm by High Temperature Quantitative Measurement and Numerical Simulation

Metals ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1886
Author(s):  
Yibo Liu ◽  
Jian Yang ◽  
Fuxiang Huang ◽  
Keran Zhu ◽  
Fenggang Liu ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
High Temperature ◽  
Flow Field ◽  
Continuous Casting ◽  
Quantitative Measurement ◽  
Powder Layer ◽  
Mold Surface ◽  
Continuous Casting Mold ◽  
Casting Mold ◽  
Slab Continuous Casting

In the present work, the flow field in a slab continuous casting mold with thicknesses of 180 and 250 mm are compared using high temperature quantitative measurement and numerical simulation. The results of the numerical simulation are in agreement with those of the high temperature quantitative measurement, which verifies the accuracy and reliability of the numerical simulation. Under the same working conditions, the velocities near the mold surface with the thickness of 180 mm were slightly higher than those of the mold with the thickness of 250 mm. The flow pattern in the 180 mm thick mold maintains DRF more easily than that in 250 mm thick mold. The kinetic energy of the jet dissipates faster in the 250 mm thick mold than in the 180 mm mold. For double-roll flow (DRF), as the argon gas bubbles can be flushed into the deeper region under the influence of strong jets on both sides, the argon bubbles distribute widely in the mold. For single-roll flow (SRF), as the argon bubbles float up quickly after leaving the side holes, the bubble distribution is more concentrated in the width direction, which may cause violent interface fluctuation and slag entrainment. The fluctuation at the steel-slag interface in the mold with 180 mm thickness is greater than that in the mold with 250 mm thickness but less than 5 mm. The increase of mold thickness may lead to a decrease of the symmetry of the flow field in the thickness direction and uniformity of mold powder layer thickness. In summary, the steel throughput should be increased in the 250 mm thick mold compared with that in the 180 mm thick mold.

Simulation of Shell Thickness Distribution and Flow Field in Slab Continuous Casting Mold

2010 ◽  
Vol 146-147 ◽  
pp. 599-606
Author(s):  
Hong Zhong ◽  
Liang Ying Wen ◽  
Zheng Peng ◽  
Xiao Lin Zhang
Keyword(s):  
Flow Field ◽  
Continuous Casting ◽  
Molten Steel ◽  
Shell Thickness ◽  
Vortex Center ◽  
Continuous Casting Mold ◽  
Casting Mold ◽  
Slab Continuous Casting ◽  
The Impact ◽  
Port Angle

The shell distribution in the slab continuous casting mold has been simulated coupling a 3-D flow, temperature and volume fraction equations of the molten steel in FLUENT. The simulated results show that the flow velocity around the upper vortex center is decrease and the location of lower vortex center move down as the nozzle port angle increases. The simulated shell thickness in the center on the narrow face become thicker at meniscus and the shell thickness in the center on wide face decreases but the basic distributions of the shell tend to consistency as the nozzle port angle increases. The simulated results also show that the effects of solidified shell on flow field in mold is slight but the velocity of molten steel near the solidified shell. There are remelting near the impact regoins implicit our attentions in order to avoid breaking out.

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