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| Effect of electromagnetic stirring on the solidification structure of Q345D |
| YANG Hai-Feng1，WANG Yuan-yuan2，LI Ting-Gang1，LI Bin2，SUN Xiao-hui2，LIANG Xiao-Kai3，LEI Zuo-sheng2 |
（1. Minmetals YingKou Medium Plate Co.， Ltd.， Yingkou 115000， Liaoning， China
2. School of Material Scince and Engineering，Shanghai University， Shanghai 200444， Liaoning， China
3. Central Iron and Steel Research Institute Institute of Engineering Steel， Beijing 100081， China） |
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Abstract Taking the Q345D steel produced in Minmetals YingKou Medium Plate Co.， Ltd.， as the research object， the effect of strand electromagnetic stirring （SEMS） on solidification structure of Q345D billets was simulated by the numerical simulation software ProCAST using the cellular automation-finite element （CAFE） model. Simulation results were evaluated by comparison between continuous casting billet with and with out strand electromagnetic stirring （SEMS）. It was proved that the simulation results were consistent with experiment results. The results indicate that increasing the electromagnetic stirring intensity can significantly increase the isometric crystal rate， and decrease the average grain size. When the electromagnetic stirring intensity increases from 0 A to 400 A at 6 Hz， the ratio of equiaxed grains increases significantly from 19.99% to 41.39%， the average grain radius decreases from 1.73×10－3 m to 1.68×10－3 m and the average grain size decreases from 8.21×10－6m2 to 6.99×10－6m2. The quality of continuous casting billet has been improved significantly under the effect of electromagnetic stirring.
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Received: 12 July 2018
Published: 06 November 2018
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2018, Vol. 37 
