一种铸造成形过程影响因素模拟与优化分析方法

发布时间：2019-02-11 21:16

【摘要】：针对目前钢锭铸造成形时常用的"瞬时充型、温度均匀"假设条件,提出一种基于正交试验设计、数值模拟及响应面法的铸造成形过程影响因素模拟与优化分析方法。以材料Cr5钢的6t钢锭铸造过程为研究对象,采用试验设计和数值模拟方法获取试验样本数据,运用极差分析得到各因素对响应指标的主次顺序。基于双三次插值算法的响应面建模方法,建立换热系数及预热温度与响应指标的回归响应面模型。基于响应面函数建立了一种对参数进行局部敏感性分析的方法,以修正试验结果。结果表明:为保证铸造成形过程影响因素模拟的精度和可靠性,提高钢锭的铸造质量,应考虑充型过程温度场变化对凝固过程的影响。
[Abstract]:In view of the assumption of "instantaneous filling and uniform temperature" commonly used in ingot casting at present, a simulation and optimization analysis method for influencing factors of casting process based on orthogonal test design, numerical simulation and response surface method is proposed. Taking the casting process of 6t ingot of Cr5 steel as the research object, the test sample data were obtained by means of experimental design and numerical simulation, and the order of each factor to the response index was obtained by means of range analysis. The regression response surface model of heat transfer coefficient, preheating temperature and response index is established based on the response surface modeling method of the bicubic interpolation algorithm. Based on the response surface function, a method for local sensitivity analysis of parameters is established to correct the experimental results. The results show that in order to ensure the accuracy and reliability of the simulation of the influencing factors of the casting forming process and to improve the casting quality of the ingot, the effect of the temperature field during the filling process on the solidification process should be considered.
【作者单位】：四川大学制造科学与工程学院;
【基金】：国家自然科学基金资助项目(51435011) 四川省科技支撑计划资助项目(2014GZ0124) 教育部新世纪优秀人才支持计划资助项目(NCET-12-0385)~~
【分类号】：TG24

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