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Mathematical Models for Top Quench Value of Steel 20CrMnTiH
Author(s): 
Pages: 42-45
Year: Issue:  4
Journal: BAOSTEEL TECHNOLOGY

Keyword:  20CrMnTiH淬透性人工神经网络;
Abstract: 开发了4种20CrMnTiH钢的端淬预报数学模型,并对2007年连续生产的50炉实绩数据进行预测对比.基于线性回归方程模型及基于加斯特方程模型结构简单,易控制但准确率较差;基于DI值模型以金属理论基础建模,但淬透性理论的不完善导致该模型也存在一定的误差;基于BP神经网络的端淬控制模型具有最高的准确性,适用于工业生产.分析了各模型误差产生原因,指出凝固偏析与测量误差是影响模型准确率的主要原因.
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