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首页> 外文期刊>ISIJ international >Thermo-mechanical Behavior of Peritectic Steel Solidifying in Slab Continuous Casting Mold and A New Mold Taper Design
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Thermo-mechanical Behavior of Peritectic Steel Solidifying in Slab Continuous Casting Mold and A New Mold Taper Design

机译：板坯连铸结晶器中包晶钢凝固的热力学行为及新的锥度设计

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摘要

Based on the descriptions of the thermal and mechanical behaviors of one peritectic steel solidifying in slab continuous casting mold, including shell shrinkage and deformation, air gap formation and mold flux film distribution in shell/mold gap, and shell temperature profile under the conventional mold taper by a two dimensional transient thermo-mechanical coupled finite element model, a new slab mold taper with non-linear slope narrow face and wedge-shape structures both for the wide and narrow faces corners was presented. The thermo-mechanical behaviors of solidifying shell and the applied effectiveness of improving shell subsurface cracks and reducing the wear of mold copper plate with the new mold taper were discussed. The results show that the mold walls of both wide and narrow faces match the shell shrinkage well under the new mold taper, and both the thicknesses and the distributions of air gap and mold flux film in the gap around shell corner and off-corners are greatly reduced. The shell grows uniformly in the mold. Moreover, the subsurface cracks both in the off-corners of slab wide and narrow faces, as well as the wear of the mold copper plate are also reduced significantly. The working life of the mold is greatly prolonged.
机译：基于对一种包晶钢在板坯连铸结晶器中凝固的热力学行为的描述，包括壳收缩和变形，气隙形成和壳/模隙中的结晶器通量膜分布以及常规结晶器锥度下的壳温度曲线通过二维瞬态热力耦合有限元模型，提出了一种新型的平板铸型锥度，该锥度具有非线性斜面窄面和楔形结构，适用于宽面和窄面拐角。讨论了凝固壳的热力学行为，以及利用新型结晶器锥度改善结晶器壳下表面裂纹和减少结晶器铜板磨损的应用效果。结果表明，在新的模具锥度下，宽面和窄面的模具壁均与壳体的收缩率相匹配，壳体角和异角处的间隙中气隙和熔剂膜的厚度和分布都很大。减少。壳在模具中均匀生长。而且，板宽和窄面的角部的地下裂纹以及铸模铜板的磨损也大大减少了。模具的使用寿命大大延长。

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