共查询到20条相似文献,搜索用时 15 毫秒
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HANBin ZHANGZhong-ping LIUXiang-hua WANGGuo-dong 《钢铁研究学报(英文版)》2005,12(3):18-21,27
Coilingtemperaturecontrolinhotstripmill playsaveryimportantroleindeterminingtheme chanicalpropertiesofthefinishedproduct[1].The earlypracticeofrunouttablecoolinginvolvedpre settingthewaterjetflowratebasedonexperience.Thisexperientialapproachwassufficientf… 相似文献
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从硬件和软件两个方面介绍了模拟轧钢的具体使用方法和实现的手段。详细地给出了轧线上各处检测器状态时序的计算方法、模拟方案数据的确定,最后还给出了模拟调节程序的模拟运行方法。 相似文献
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LIU En-yang ZHANG Dian-hua SUN Jie PENG Liang-gui GAO Bai-hong SU Li-tao 《钢铁研究学报(英文版)》2012,19(4):39-42
Abstract: Feedback control is one of the most important ways to improve coiling temperature control precision during laminar cooling process. Laminar cooling equipments of a hot strip mill and structure of the control system were introduced. Feedback control algorithm based on PI controller and that based on Smith predictor were designed and tested in a hot strip mill respectively. Practical application shows that the feedback control system based on PI controller plays a limited role in improving coiling temperature control precision. The feedback control system based on Smith predictor runs stable and reliable. When the measured coiling temperature deviates from the target value, it can be adjusted to the required range quickly and steadily by Smith predictor feedback control, which improves the coiling temperature control precision greatly, and qualities of hot rolled strips are improved significantly. 相似文献
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LIUZheng-dong IVSamarasekera 《钢铁研究学报(英文版)》2004,11(3):15-23
The controlled runout table cooling is essential in determining the final mechanical properties and flatness of steel strip. The heat of a hot steel strip is mainly extracted by cooling water during runout. In order to study the heat transfer by water jet impingement boiling during runout, a pilot facility was constructed at the University of British Columbia. On this pilotfacility, the water jet impingement tests were carried out under various cooling conditions to investigate the effect of processing parameters, such as cooling water temperature, water jet impingement velocity, initial strip temperature, water flow rate, water nozzle diameter and array of water nozzles, on the heat transfer of heated strip. The results obtained contribute to the optimization of cooling water during runout. 相似文献
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讲述了本钢1780热连轧带钢卷取温度控制改造后层流冷却控制模型的数学公式与实际使用效果,该模型达到了较高的控制精度,实现了改造的目的。 相似文献
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太钢1549mm热连轧设备是由日本日新制钢株式会社引进的二手设备,采用美国西屋公司计算机系统,实现全自动轧制,介绍热连轧厂工艺及设备。 相似文献
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Hot Strip Laminar Cooling Control Model 总被引:6,自引:1,他引:5
WANGJun WANGGuo-dong LIUXiang-hua 《钢铁研究学报(英文版)》2004,11(5):13-17
The control model of laminar cooling system for hot strip, including air-cooling model, water-cooling model, temperature distribution model along thickness direction, feedforward control model, feedback control model and self-learning model, was introduced. PID arithmetic and Smith predictor controller were applied to feedback control. The sample of model parameter classification was given. The calculation process was shown by flow chart. The model has been proved to be simple, effective and of high precision. 相似文献
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Considering the strip speed during controlled laminar cooling on Baosteel 1580 hot strip mill in China, the influence of strip speed fluctuation on coiling temperature control for the tail and “neck” of the strip was analyzed. The optimization strategies were put forward and proved effective in operation. 相似文献