热轧带钢组织性能预报模型及应用

发布时间：2017-12-27 13:04

本文关键词：热轧带钢组织性能预报模型及应用　出处：《钢铁》2016年11期 　论文类型：期刊论文

【摘要】：基于物理冶金理论,研究了热轧带钢过程中的奥氏体晶粒长大模型、奥氏体再结晶模型、奥氏体相变模型以及力学性能模型。奥氏体再结晶模型中,通过研究位错密度的变化来描述由于再结晶不完全造成的变形抗力的变化。奥氏体相变模型中,通过碳扩散理论描述了奥氏体-铁素体相界面随冷却过程的变化规律。基于热轧带钢过程中的冶金物理模型,开发热轧带钢组织性能预报系统。系统包括4个模块,分别用于计算板坯在加热炉、粗轧精轧、层流冷却和卷取完成各阶段的组织和力学性能参数,生产工艺是该系统的重要输入参数。利用该系统对某钢厂实际生产过程的组织性能进行预报,预报的力学性能和现场实测值有较好的一致性。
[Abstract]:Based on physical metallurgy theory, austenite grain growth model, austenite recrystallization model, austenite transformation model and mechanical property model of hot rolled strip steel were studied. In the austenite recrystallization model, the change of the dislocation density is studied to describe the change of the deformation resistance caused by the incomplete recrystallization. In the austenite phase transition model, the change law of the austenite - ferrite interface with the cooling process is described by the theory of carbon diffusion. Based on the metallurgical physical model in the process of hot rolling strip, the prediction system of microstructure and properties of hot rolled strip is developed. The system consists of 4 modules, which are used to calculate the structural and mechanical parameters of the slab in the stages of reheating, roughing, finishing, laminar cooling and coiling. The production process is an important input parameter of the system. The system is used to predict the actual production process of a steel plant, and the mechanical properties of the forecast are in good agreement with the measured values in the field.
【作者单位】：北京科技大学工程技术研究院;
【基金】：中央高校基本科研业务费专项资金资助项目(FRC-IC-14-005)
【分类号】：TG335.56
【正文快照】： 对于现代钢铁企业来说,能否在实现高效批量化生产的同时保证产品性能指标稳定可控,对降低研发和生产成本,提高市场竞争力具有决定性影响。钢材产品的性能参数与其内部组织结构密切相关,而内部组织结构又依赖于生产工艺。如果能够对各种生产工艺下的钢材组织性能进行预测,不仅

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