中厚板轧制过程中力能参数的预报模型

Prediction Model for Rolling Force Parameters during Rolling of Medium and Heavy Plate

根据给定的热力耦合热边界条件的计算结果 ,建立了轧制中厚板的二维和三维有限元模型并模拟计算了 (2 30 0～ 2 6 30 )mm× (9～ 72 )mm板坯压下量 7～ 19mm ,轧制速度 3 16～ 4 37m/s ,轧制温度 92 9～10 33℃的轧制力 (2 6 6 0 0～ 5 0 0 0 0kN)和轧制力矩 (780～ 32 0 0kN·m)。结果表明 ,轧制力计算值和测量值的相对偏差为 1 30 %～ 9 37% ,轧制力矩的相对偏差为 3 6 9%～ 9 75 %。二维模拟和三维模拟的结果基本一致。

On the basis of calculation results on thermo-mechanical coupled thermal boundary conditions, the two and three dimensional finite element model for medium and heavy plate rolling has been established, and the rolling force ( 26 600～50 000 kN) and rolling moment (780～3 200 kN·m) of ( 2 300～ 2 630) mm×(9～72) mm plate at rolling temperature 929～ 1 033 ℃, reduction of slab in pass 7～19 mm and rolling speed 3.16～4.37 m/s were simulated and calculated. The results show that the relative deviation of rolling force calculated value from measured value is 1.30%～9.37%, and the relative deviation of rolling moment calculated value from measured value is 3.69%～9.75%. The simulated results of two and three dimensional finite element model are same basically.