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建立了大方坯连铸结晶器电磁搅拌条件下电磁场及钢液流场数学模型,开发了相应的Visual Cast仿真软件,并应用软件模拟分析了大方坯连铸结晶器内磁场、电磁力分布及双侧孔浸入式水口条件下结晶器内钢液流场的分布特征。结果表明,结晶器内磁场分布均匀,并沿横断面水平旋转,电磁力的旋转周期为磁场旋转周期的一半。电磁搅拌改变了结晶器内流场形态,减小回流区和冲击深度,有利于促进钢液中非金属夹杂物上浮排除,提高大方坯洁净度。
The mathematic model of electromagnetic field and molten steel flow field under the condition of electromagnetic stirring was established, and the corresponding Visual Cast simulation software was developed. The distribution of magnetic field and electromagnetic force in the continuous casting mold and double Distribution of Molten Steel Flow Field in a Mold with Silt Immersion. The results show that the magnetic field in the mold is evenly distributed and rotates horizontally along the transverse plane. The rotation period of the electromagnetic force is half of the magnetic field rotation period. Electromagnetic stirring has changed the shape of the flow field in the mold, reducing the reflow zone and the impact depth, is conducive to promoting the floating of non-metallic inclusions in molten steel to exclude and improve the cleanliness of the bloom.