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针对铝板带热连轧过程中出现的来料厚差、来料初始偏心和初始设定辊缝差等横向非对称诱因的特点,分别建立了平衡调控模型。利用MSC.Marc软件进行了JP1235铝合金热轧有限元分析,将实验所得JP1235铝合金材料本构关系及某铝板带五连轧生产设备生产数据应用于调控模型中,对横向非对称诱因扰动下轧件的跑偏情况和施加平衡调控后的轧件跑偏情况进行了数值模拟。模拟结果显示,平衡调控数学模型能够有效地减小横向非对称扰动造成的轧件横向跑偏:初始偏心的调控模型在系统响应1.2 s左右跑偏量基本为0,初始厚度横向楔形和初始辊缝差的平衡调控对轧件的跑偏缓解程度都在60%以上。模拟结果证明平衡调控模型有效,达到了理想纠偏效果。
Aiming at the characteristics of horizontal asymmetric inducement, such as the difference of incoming thickness, the initial eccentricity of incoming raw material and the initial setting of the roll gap during the continuous hot strip rolling process, the equilibrium control model was established respectively. The finite element analysis of JP1235 aluminum alloy hot rolled was carried out by using MSC.Marc software. The constitutive relations of JP1235 aluminum alloy material and the production data of an aluminum strip with five continuous rolling production equipment were applied to the control model. Under the disturbance of lateral asymmetric inducement The deviation of the rolling stock and the deviation of the rolling stock after the balanced control are simulated. The simulation results show that the balance control mathematical model can effectively reduce the lateral deviation of the rolling stock due to the lateral asymmetric disturbance. The initial eccentricity control model has a basic deviation of about 0.2 s in the system response, the initial thickness of the transverse wedge and the initial roll Poor balance control of the rolling deviation of the degree of relief are more than 60%. Simulation results show that the balance control model is effective and achieves the ideal correction effect.