【作者】 姚俊； 唐广波； 刘正东； 马宝国；

【Author】 YAO Jun~1,TANG Guang-bo~1,LIU Zheng-dong~1,MA Bao-guo~2 (1.Institute for Structural Materials,Central Iron and Steel Research Institute,Beijing 100081,China; 2.Special Steel Branch,Baoshan Iron & Steel Co.,Ltd.,Shanghai 200940,China)

【机构】 钢铁研究总院结构材料研究所； 宝山钢铁股份有限公司特殊钢分公司；

【摘要】 结合棒线材生产线实际生产工艺,以物理冶金模型为基础,建立了GCr15轴承钢棒材热连轧过程中轧件在孔型中变形、温度演变、品粒尺寸演变以及力能参数等的数值模拟计算模型。利用FORTRAN和VB语言开发了GCr15棒材热连轧过程数值模拟系统,并结合宝钢股份特殊钢分公司棒材生产线上的实际参数进行了计算,结果表明计算值与现场测量值吻合较好,温度值的相对误差不超过±3%,轧制力矩的误差在5%以内,说明系统具有一定的准确性,可以为考察生产工艺对轧件组织的影响提供参考。更多还原

【Abstract】 According to the industrial condition of a hot bar rolling mill and on the basis of the physical metallurgical models,a set of numerical modeling system for simulating deformation in grooves,temperature changes,austenite grain size evolution,and roll force and roll torque during multipass hot rolling of GCr15 bearing steel bar has been developed.FORTRAN and Visual Basic are used to code the program and interface of the modeling system.Simulation has been conducted with the practical data from the rolling mill of Baosteel Special Steel.The results show that the predicted values have good agreement with the measured ones.The relative errors between the calculated temperature and the measured one are less than±3%,and the relative errors between the calculated roll torques and the actual values are less than±5%,which indicates the modeling system have high accuracy and can be used as a meaningful reference for process control of hot bar rolling production of GCr15 bearing steel.更多还原