采用有限元计算模型和实测轧件温度以及精轧各道次的轧制压力值,对不同边界条件下的传热系数和塑性功转热率进行了优化计算,得到了轧件断面温度场.在此基础上考虑了再结晶等因素,建立了计算精轧过程中应力-应变曲线的流变应力模型,并利用该模型对X46级管线钢精轧各道次的流变应力进行了预测.结果表明:该模型的计算结果与用Sims法计算的结果吻合较好,能真实反映工业生产的实际情况.
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