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提出了一种应用于板坯连铸过程的新型电磁制动技术即立式电磁制动技术,利用Ansys和Fluent软件建立了描述立式电磁制动板坯连铸过程三维磁场和流场计算模型,研究了立式电磁制动磁感应强度分布规律和结晶器内流速变化。结果表明,立式电磁制动技术产生的恒稳磁场可以有效覆盖接近窄面的、自由表面到主射流冲击点高度范围内的钢水,磁感应强度主要集中在磁极覆盖区域,磁极覆盖区域外形成一个磁感应强度逐渐衰减的磁场分布;应用立式电磁制动技术后水口出流的冲击速度、自由表面钢水流速和下回流区冲击深度明显减小,有助于减少卷渣、防止漏钢和促进夹杂物的上浮,提高铸坯的质量,说明立式电磁制动冶金效果良好。
A new type of electromagnetic brake technology that is applied to the continuous casting process of slab, that is, vertical electromagnetic brake technology, is proposed. The three-dimensional magnetic field and flow field calculation model describing the vertical electromagnetic brake slab continuous casting process is established by Ansys and Fluent software , Studied the vertical electromagnetic brake magnetic flux density distribution and mold flow velocity changes. The results show that the steady magnetic field generated by the vertical electromagnetic braking technology can effectively cover the molten steel near the narrow surface and the free surface to the height of the impact point of the main jet. The magnetic flux density mainly concentrates in the magnetic pole coverage area and the magnetic pole coverage area forms a The magnetic field intensity gradually decaying magnetic field distribution; vertical electromagnetic brake technology outlet out of the impact velocity, free surface flow velocity and the lower backflow zone impact depth significantly reduced, help to reduce the volume of slag, to prevent leakage and to promote inclusions Floating things to improve the quality of slab, indicating a good vertical electromagnetic brake metallurgical effect.