Construction method of material deformation resistance unified model for rolling mill design

The invention provides a construction method of a material deformation resistance unified model with extrapolation stability in the rolling mill design process. According to the method, a large number of heat processing simulation experiment data is used as basis, and through nonlinear fitting analysis, the material deformation resistance is expressed into heat processing parameters such as deformation temperature T, deformation strain velocity and deformation quantity nonlinear function. The model is suitable for the rolling process design and a rolling production line design system of rod wires, plates and pipes in steel grades such as structure steel, pipeline steel, mold steel, and heat resistant steel, the model can precisely represent the nonlinear function relationship between deformation strain and deformation parameters of each kind of steel, meanwhile, high data extrapolation capability is also realized, and the model can be applied to the roller intensity design in a rolling production line and the computer aided design of a heat processing process.