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首页> 外文会议>Iron Steel Technology Conference >Shape and Crown Control Optimization With Integrated Automation for Reversing Hot Mills Lacking Sufficient Crown Control Devices
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Shape and Crown Control Optimization With Integrated Automation for Reversing Hot Mills Lacking Sufficient Crown Control Devices

机译：具有综合自动化的形状和冠控制优化，用于倒车热轧机缺乏足够的皇冠控制装置

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Reversing hot rolling mills present a unique challenge in strip shape and crown control due to the inability to vary work roll ground crown between finishing passes unless properly equipped with sufficient crown control devices such as work roll bending and work roll shifting with adjustable crown. As installed, the hot Steckel mill at SSAB Iowa lacked adjustable roll crown and sufficient work roll bending to cover a wide in-pass rolling force range. Eventually, adjustable roll crown was installed in 2008. Before the installation of adjustable roll crown, extensive in-house work was conducted to develop and optimize shape and crown control to achieve the best results possible (primary focus on shape control) with the equipment on hand. A mathematical algorithm and the control logic, that was developed and integrated into the mill setup control at the SSAB Iowa Steckel mill, will be presented. With these improvements, the SSAB Iowa mill successfully produced optimum shape and crown control, within equipment limits, for several years prior to the installation of adjustable roll crown. During algorithm development it was determined that influence coefficients alone were insufficient to generate an optimal setup when work roll ground crown changes were not possible between passes. Consequently, a target crown slope function was introduced to optimize the setup model calculation for this particular situation. A similar approach may be beneficial for operators of reversing mills which lack adequate crown control devices.
机译：逆转热轧机由于在整理过程中无能为用的工作辊研磨冠而呈现具有条带形状和冠控制的独特挑战，除非配备足够的冠控制装置，例如工作辊弯曲和与可调节冠的工作滚动转移。如安装所示，SSAB IOWA的热Steckel磨机缺少可调节的卷冠和足够的工作辊弯曲，以覆盖宽的滚动力范围。最终，可调节的卷冠安装在2008年。在安装可调节卷冠之前，进行了广泛的内部工作，以开发和优化形状和皇冠控制，以实现最佳结果（主要关注形状控制）的设备手。将介绍在SSAB IOWA Steckel Mill中开发和集成在SSAB IOWA Steckel Mill中的Mill设置控制中的数学算法和控制逻辑。通过这些改进，SSAB IOWA Mill在安装可调节卷冠之前成功地在设备限制内成功产生了最佳的形状和冠控制，在设备限制内。在算法的开发期间，确定单独的影响系数不足以在通过工作滚动地冠变化时不足以产生最佳设置。因此，引入了目标冠斜率函数以优化这种特定情况的设置模型计算。一种类似的方法可能对缺乏足够的冠部控制装置的倒车工厂的操作者有益。

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