Development of Slab Continuous Casting Technology in N. K. K.

A mathematical model coupled with electromagnetic field has been developed to simulate the transient turbulence flow and initial solidification in a slab continuous casting mold under different electromagnetic stirring (EMS) currents and casting speeds. Through comparing the magnetic flux density, flow field with measured results, the reliability of the mathematical model is proved. The uniform index of solidified shell thickness has been introduced to judge the uniformity of the solidified shell. The results show that a horizonal recirculation flow has been generated when EMS is applied, and either accelerated or decelerated regions of flow field are formed in the liquid pool. Large EMS current and low casting speed may cause the plug flow near the mold narrow face and a suitable EMS current can benefit to the uniform growth of solidified shell. Meanwhile, an industrial test exhibits that EMS can weaken the level fluctuation and number density of inclusion. Overall, a rational EMS current range is gained, when the casting speed is 1.2 m/min, the rational EMS current is 500–600 A.

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Longitudinal Crack Detection Approach Based on Principal Component Analysis and Support Vector Machine for Slab Continuous Casting

steel research international ◽

10.1002/srin.202100168 ◽

2021 ◽

Author(s):

Haiyang Duan ◽

Jingjing Wei ◽

Lin Qi ◽

Xudong Wang ◽

Yu Liu ◽

...

Keyword(s):

Principal Component Analysis ◽

Support Vector Machine ◽

Continuous Casting ◽

Crack Detection ◽

Longitudinal Crack ◽

Principal Component ◽

Component Analysis ◽

Support Vector ◽

Slab Continuous Casting ◽

Detection Approach

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Integrated Approach to Density-Based Spatial Clustering of Applications with Noise and Dynamic Time Warping for Breakout Prediction in Slab Continuous Casting

Metallurgical and Materials Transactions B ◽

10.1007/s11663-019-01633-w ◽

2019 ◽

Vol 50 (5) ◽

pp. 2343-2353 ◽

Cited By ~ 1

Author(s):

Haiyang Duan ◽

Xudong Wang ◽

Yu Bai ◽

Man Yao ◽

Qingtao Guo

Keyword(s):

Continuous Casting ◽

Dynamic Time Warping ◽

Spatial Clustering ◽

Integrated Approach ◽

Time Warping ◽

Slab Continuous Casting ◽

Dynamic Time

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Heat Transfer and Solidification Model of Slab Continuous Casting Based on Nail-Shooting Experiments

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1088.153 ◽

2015 ◽

Vol 1088 ◽

pp. 153-158 ◽

Cited By ~ 1

Author(s):

An Gui Hou ◽

Yi Min ◽

Cheng Jun Liu ◽

Mao Fa Jiang

Keyword(s):

Heat Transfer ◽

Continuous Casting ◽

Liquid Core ◽

Casting Process ◽

Soft Reduction ◽

Slab Continuous Casting ◽

Solidification Model ◽

Core Length ◽

Measurement Results ◽

Heat Transfer And Solidification

A heat transfer and solidification model of slab continuous casting process was developed, and the nail-shooting experiments were carried out to verify and improve the prediction accuracy. The comparison between the simulation and the measurements results showed that, there exists difference between the model predicted liquid core length and the calculated liquid core length according to the measurement results of the solidification shell thickness. In the present study, the value of constant a in the heat transfer coefficient calculation formula was corrected through back-calculation, results showed that, the suitable value of a is 31.650, 33.468 and 35.126 when the casting speed is 0.8m·min-1, 0.9m·min-1 and 1.0m·min-1 respectively, which can meet the liquid core length of the measurement results. The developed model built a foundation for the application of dynamic secondary cooling, and dynamic soft reduction.

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

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.291-294.423 ◽

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.

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