铸钢件凝固组织与性能快速预测系统的开发与应用

发布时间：2018-09-03 06:54

【摘要】：基于JMatPro软件计算得到铸钢凝固组织与力学性能数据,建立了常用铸钢的凝固组织与力学性能数据库。利用华铸CAE铸造工艺分析系统计算得到的温度场数据,开发了铸钢凝固组织与性能快速预测系统。本研究采用结构变化很大的框架铸钢件作为试验件,采用开发的凝固组织与性能快速预测系统对铸钢框架试验件进行了模拟分析,预测了试验件凝固奥氏体、马氏体、铁素体、贝氏体等的含量和硬度、拉伸强度、屈服强度等力学性能,并通过理论分析以及实际浇注断裂位置两方面分析论证了所开发系统的可靠性。研究表明,开发的铸钢凝固组织与性能快速预测系统,能够较合理地预测出铸钢件凝固过程中相组织(奥氏体、马氏体、贝氏体、铁素体)与力学性能(屈服强度、拉伸强度、硬度)的变化,有助于铸造工艺人员分析并优化铸钢件的凝固补缩系统,对实际铸造生产具有十分重要的指导意义。
[Abstract]:Based on the data of solidification structure and mechanical properties of cast steel calculated by JMatPro software, the database of solidification structure and mechanical properties of common cast steel was established. A rapid prediction system for solidification structure and properties of cast steel was developed by using the temperature field data calculated by CAE casting process analysis system. In this study, the frame cast steel with great structural change was used as the test piece, and the rapid prediction system of solidification structure and properties was used to simulate and analyze the cast steel frame test piece, and the solidification austenite, martensite and ferrite of the test piece were predicted. The content, hardness, tensile strength, yield strength of bainite and other mechanical properties are analyzed. The reliability of the developed system is proved by theoretical analysis and actual pouring fracture location analysis. The results show that the rapid prediction system for solidification microstructure and properties of cast steel can reasonably predict the microstructure (austenite, martensite, bainite, ferrite) and mechanical properties (yield strength, tensile strength) of cast steel during solidification. The change of hardness) is helpful to the analysis and optimization of solidification and shrinkage system of steel castings, which is of great significance to the actual casting production.
【作者单位】：华中科技大学材料成形及模具国家重点实验室;
【分类号】：TG142.1;TG260

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