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热轧带钢控制冷却技术概况 总被引:2,自引:0,他引:2
介绍了日本、欧洲等国家热轧带钢控制冷却技术的发展概况及国内各大钢铁企业采用的控冷技术和应用控冷系统的形式,并针对鞍钢半连轧厂水幕冷却系统存在的实际问题提出5项建议,供有关技术人员参考。 相似文献
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主要从带钢冷却系统采用的先进技术和冷却装置采用的新技术、新型架构冷却装置的优缺点比较和应用实例等方面介绍了热轧带钢轧后冷却装置的发展和应用. 相似文献
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热轧带钢在从精轧机组出口到卷取机前的输送轧道上的冷却状况对产品机械性能起很大作用。但是用传统的冷却设备和控冷方法难以获得均匀的材质和适应深加工用高强度钢板等的机械性能多样化和高级化的要求。为此,日本神户钢铁公司加古川钢铁厂开发了新的冷却设备和控制系统. 相似文献
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为了提高热轧带钢卷取温度控制精度,针对热轧带钢轧后冷却过程非线性、强耦合性等特性,建立了具有非线性结构特征的热轧带钢轧后冷却过程控制的温度数学模型,并对热轧带钢轧后冷却过程卷取温度的设定策略进行了研究,同时在该模型基础上开发了系统软件,通过现场实际应用对模型功能进行了验证.结果表明,该冷却数学模型的卷取温度设定计算结果与实测结果吻合较好,卷取温度控制精度可达到±10℃,表明该模型取得了较好的应用效果,能够达到较高的控制精度. 相似文献
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热轧带钢卷取温度控制数学模型 总被引:5,自引:0,他引:5
随着市场对热带钢产品要求的不断提高,卷取温度控制变得越来越重要,目前世界各国都在不断改进卷取温度控制的数学模型和控制方法,以满足市场需求。介绍几种热轧带负锩陬温度控制数学模型并进行了分析研究,认为三菱公司的数学模型可以满足高精度控制的要求,是一种较先进的数学模型。 相似文献
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《钢铁冶炼》2013,40(9):685-693
AbstractThis paper presents a simulation and experiment study on an electromagnetic (EM) sensor system for monitoring the phase transformation of steel strip on the runout table (ROT) of the hot strip mill in Tata Steel IJmuiden. The sensor head contains an H shaped magnetic core and is excited simultaneously at multiple frequencies. A simulation study linking the output of the EM system, in the form of a mutual induction spectrum, to the transformation processes within the steel strip is presented. This is performed by linking the results of thermodynamic models of the transformation behaviour of the steel strip (modelled with the TITAN mill model, property of Tata Steel) with the EM response of the sensor system (modelled with Ansys Maxwell 3D). The simulations are able to show the induction spectra that would be measured for a particular mill set-up and steel strip at different positions over the length of the ROT. The paper further describes the construction and deployment of the sensor head on the IJmuiden hot strip mill and presents the first results from this type of system with data taken during normal production on the mill. 相似文献
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介绍了改造后的太钢1549mm热连轧计算机系统的硬件配置、结构及主要控制功能,尤其是SIEMENSSIROLL系统在热连轧的应用及特点。 相似文献
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太钢热连轧三电系统的技术特点 总被引:1,自引:0,他引:1
介绍太钢1 549 m m 热连轧三电系统的主要技术特点、实现方法以及实施效果。它是由计算机系统、电气传动系统、自动化仪表系统组成的大型自动化控制系统。该系统实现了多项创新技术,并在一些方面填补了国内空白。 相似文献
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The need for accurate prediction and control of cooling profiles of steel strips on runout tables has led to the development of a mathematical model that is able to predict coiler temperatures under any given condition with an accuracy of ± 14 °C as well as calculating the entire temperature profile of a steel strip with sufficient accuracy. Comparisons with online strip temperature data at various locations of the runout table, which were obtained by a new experimental procedure, show that the effect of single cooling headers on the thermal response of a steel strip can be predicted. The model takes into account all relevant thermodynamic effects by means of a statistical approach. Heat transfer to the environment, steel thermophysical properties and phase transformation are modelled using B‐splines. Model adaptation is realised by fitting calculated and measured coiler temperatures of approximately 40000 strips with a least square method in order to gain optimal base values for the B‐spline functions. During model development special attention was paid to the model's capability of being re‐adjustable to a large variety of conditions as well as its local behaviour. Therefore, concepts like temperature‐dependent heat transfer coefficients, which are applicable only to one specific plant, have been avoided in favour of a more generalised formulation of the model that helps to gain insight into the physics of the processes involved, i.e. heat transfer of subcooled jet impingement boiling and film boiling. It was found that both cooling water and steel surface temperature have a large influence on heat transfer whereas the influence of strip speed can be neglected. 相似文献
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改进后的志田茂变形抗力模型是比较经典的变形抗力模型,但该模型没有考虑残余应变对于变形抗力的影响,不能完全适应现场生产的需要。作者在分析研究济南钢铁集团有限公司热连轧厂大量实际生产数据的基础上,在原变形抗力模型中考虑了碳质量分数的影响,增加了对应的影响系数,用于修正残余应变的影响,从而使该模型更贴近于现场实际。模型实际应用结果表明,改进后的模型预报精度明显提高,效果良好。 相似文献