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首页> 外文期刊>ISIJ international >Numerical Modeling of Carbide Redistribution during Centrifugal Casting of HSS Shell Rolls
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Numerical Modeling of Carbide Redistribution during Centrifugal Casting of HSS Shell Rolls

机译：高速钢壳辊离心铸造过程中碳化物再分布的数值模拟

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摘要

A numerical model was further developed and applied in this work to understand and optimize the carbide redistribution during centrifugal casting process used in manufacturing of high speed steel (HSS) shell rolls. This model will help to further understand the complex solidification behavior of the HSS roll. Performance of the HSS roll requires proper formation and distribution of the VC, (V, Mo)C, and MO_2C carbides as well as the eutectic carbides, which is shown by dimensional analysis to be dominated by centrifugal buoyancy effects and solidification and carbide kinetics. The model includes a rheology-viscosity sub-model to address the interference between different moving particles or classes of particles of different sizes. The carbide redistribution model was successfully validated against experimental work. A parametric study was performed to determine the key variables that influence the distribution of the VC, (V, Mo)C, and MO_2C carbides and refine the HSS microstructure including the wash (coating) material, superheat, C content of the shell material and mold temperature.
机译：进一步开发了数值模型并将其应用到这项工作中，以了解和优化用于高速钢（HSS）薄壳辊制造的离心铸造过程中碳化物的重新分布。该模型将有助于进一步了解HSS辊的复杂凝固行为。 HSS轧辊的性能需要VC，（V，Mo）C和MO_2C碳化物以及低共熔碳化物的适当形成和分布，这通过尺寸分析表明，离心浮力作用，凝固和碳化物动力学是主要因素。该模型包括流变粘度子模型，以解决不同运动颗粒或不同尺寸颗粒类别之间的干扰。碳化物再分配模型已针对实验工作成功验证。进行了参数研究，以确定影响VC，（V，Mo）C和MO_2C碳化物分布的关键变量，并细化了高速钢的微观结构，包括清洗（涂层）材料，过热，壳材料的C含量和模具温度。

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