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Opti mization and Model of Laminar Cooling Control Systemfor Hot Strip Mills 被引量:22
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作者 XIE Hai-bo LIU Xiang-hua +1 位作者 WANG Guo-dong ZHANG Zhong-ping 《Journal of Iron and Steel Research International》 SCIE EI CAS CSCD 2006年第1期18-22,共5页
The structure of laminar cooling control system for hot rolling was introduced and the control mode, cooling strategy, segment tracking and model recalculation were analyzed. The parameters of air/water cooling models... The structure of laminar cooling control system for hot rolling was introduced and the control mode, cooling strategy, segment tracking and model recalculation were analyzed. The parameters of air/water cooling models were optimized by regressing the data gathering in situ, and satisfactory effect was obtained. The coiling temperature can be controlled within ±15℃. 展开更多
关键词 hot rolled strip laminar cooling control system model parameter optimization
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Self-Learning and Its Application to Laminar Cooling Model of Hot Rolled Strip 被引量:16
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作者 GONG Dian-yao XU Jian-zhong PENG Liang-gui WANG Guo-dong LIU Xiang-hua 《Journal of Iron and Steel Research International》 SCIE EI CAS CSCD 2007年第4期11-14,共4页
The mathematical model for online controlling hot rolled steel cooling on run-out table (ROT for abbreviation) was analyzed, and water cooling is found to be the main cooling mode for hot rolled steel. The calculati... The mathematical model for online controlling hot rolled steel cooling on run-out table (ROT for abbreviation) was analyzed, and water cooling is found to be the main cooling mode for hot rolled steel. The calculation of the drop in strip temperature by both water cooling and air cooling is summed up to obtain the change of heat transfer coefficient. It is found that the learning coefficient of heat transfer coefficient is the kernel coefficient of coiler temperature control (CTC) model tuning. To decrease the deviation between the calculated steel temperature and the measured one at coiler entrance, a laminar cooling control self-learning strategy is used. Using the data acquired in the field, the results of the self-learning model used in the field were analyzed. The analyzed results show that the self-learning function is effective. 展开更多
关键词 laminar cooling hot rolled strip SELF-LEARNING process control model
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PROFILE AND FLATNESS CONTROL SYSTEM IN 1700mm HOT STRIP MILLS OF ANSTEEL 被引量:6
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作者 HE Anrui YANG Quan +1 位作者 CHEN Xianlin ZHAO Lin 《Chinese Journal of Mechanical Engineering》 SCIE EI CAS CSCD 2008年第3期103-107,共5页
Varying contact-length backup roll and linearly variable crown work roll are provided for improving the mill performance of profile and flatness control. Integrated with theses technologies, relevant profile and flatn... Varying contact-length backup roll and linearly variable crown work roll are provided for improving the mill performance of profile and flatness control. Integrated with theses technologies, relevant profile and flatness control models are developed for hot strip mills on the basis of large amount of finite element calculation. These models include shape setup control model in process control system, bending force feedforward control model, crown feedback control model and flatness feedback control model in basis automation system. Such a profile and flatness control system with full functions is applied in 1 700 mm industrial hot strip mills of Ansteel. Large amount of production data shows that the crown precision with the tolerance of±18 μm is over 90%, the strip percentage which the actual flatness is within ±25 I-unit surpasses 96%, and general roll consume is reduced by 28% by using the profile and fiatness control system. In addition, schedule-free rolling is realized. 展开更多
关键词 hot strip mills Profile and flamess control Roll contour Schedule-free rolling
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VCR and ASR technology for profile and flatness control in hot strip mills 被引量:7
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作者 曹建国 魏钢城 +2 位作者 张杰 陈先霖 周一中 《Journal of Central South University of Technology》 EI 2008年第2期264-270,共7页
The roll contour pattern and variety of work and backup rolls in service and its effect on profile and flatness control performance in 1 700 mm hot strip mill at Wuhan Iron and Steel(Group) Corporation were tested and... The roll contour pattern and variety of work and backup rolls in service and its effect on profile and flatness control performance in 1 700 mm hot strip mill at Wuhan Iron and Steel(Group) Corporation were tested and analyzed by the developed finite element models of different typical roll contours configurations.A rather smooth local work roll contour near strip edges and an increase in rolled length can be obtained by application of long stroke work roll shifting system with conventional work roll contours that is incapable of the crown control.In comparison with the conventional backup and work roll contours configuration,the crown control range by the roll bending force enhances by 12.79% and the roll gap stiffness increases by 25.26% with the developed asymmetry self-compensating work rolls(ASR) and varying contact backup rolls(VCR).A better strip profile and flatness quality,an increase in coil numbers within the rolling campaign and a significant alleviated effect of severe work roll wear contours on performance of edge drop control are achieved by the application of ASR with crown control and wear control ability in downstream stand F5 and VCR in all stands of 1 700 mm hot strip mill. 展开更多
关键词 hot rolling mill strip profile and flatness control WEAR finite element analysis
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Technological investigation on the Short Stroke Width Control Rolling in the Rougher Mills of Hot Strip Continuous Rolling Mill Train 被引量:1
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作者 SUN Ben Rong SHUAI Min +4 位作者 YANG Xin Fa FAN Mei Guang LI Yi Ying ZHOU Ren Yi SHEN Jian Guo 《Journal of Iron and Steel Research International》 SCIE EI CAS CSCD 1995年第1期22-25,共4页
According to technological requirement of hot charge rolling and hot direct rolling,in this paper,we investigated the technology of the width control rolling in the rougher mills of hot strip continuous rolling mill t... According to technological requirement of hot charge rolling and hot direct rolling,in this paper,we investigated the technology of the width control rolling in the rougher mills of hot strip continuous rolling mill train.On the basis of improving width range of continuous casting of slab,we obtained a good result of greatly increasing the yield of slab→coil is achieved. 展开更多
关键词 hot charge rolling hot direct rolling short stroke width control rolling
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Study and application of crown feedback control in hot strip rolling 被引量:1
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作者 Xiaodong Wang Anrui He +2 位作者 Quan Yang Zhi Xie Hongtao Yang 《Journal of University of Science and Technology Beijing》 CSCD 2007年第2期190-194,共5页
Crown feedback control is one part of the automatic shape control (ASC) system. On the basis of large simulation researches conducted, a linear crown feedback control model was put forward and applied in actual stri... Crown feedback control is one part of the automatic shape control (ASC) system. On the basis of large simulation researches conducted, a linear crown feedback control model was put forward and applied in actual strip rolling. According to its successful op- eration in the ASP 1700 hot strip mill of Angang Group for one year and also from the statistical results of several crown measurements, it can be definitely said that this control model is highly effective and shows stable performance. The control effectiveness of different gauges of strips with the feedback control is found to increase by 10%-30% compared with that without feedback control. 展开更多
关键词 hot rolled strip CROWN feedback control automatic shape control PROFILER
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Designing of Hot Strip Rolling Mill Control System
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作者 Yajun Wu 《World Journal of Engineering and Technology》 2016年第3期413-417,共6页
Aimed at the complex demand of hot strip rolling mill in practicing, the configuration of the coiler and the technological process is analyzed. The arithmetic of coiling tension and the control process is introduced. ... Aimed at the complex demand of hot strip rolling mill in practicing, the configuration of the coiler and the technological process is analyzed. The arithmetic of coiling tension and the control process is introduced. The frame of the tension adjusting system is given. The coiler control system hardware is designed. The system is designed scientifically with steady control and meets demand of the market. 展开更多
关键词 hot strip Rolling COILER Tension control
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Comprehensive contour prediction model of work rolls in hot wide strip mill 被引量:8
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作者 Xiaodong Wang Quan Yang Anrui He Renzhong Wang 《Journal of University of Science and Technology Beijing》 CSCD 2007年第3期240-245,共6页
The predictive calculation of comprehensive contour of work rolls in the on-line strip shape control model during hot rolling consists of two important parts of wear contour calculation and thermal contour calculation... The predictive calculation of comprehensive contour of work rolls in the on-line strip shape control model during hot rolling consists of two important parts of wear contour calculation and thermal contour calculation, which have a direct influence on the ac- curacy of shape control. A statistical wear model and a finite difference thermal contour model of work rolls were described. The comprehensive contour is the equivalence treatment of the sum of grinding, wear, and thermal contours. This comprehensive contour calculation model has been applied successfully in the real on-line strip shape control model. Its high precision has been proved through the large amounts of actual roll profile measurements and theoretical analyses. The hit rates (percent of shape index satisfying re- quirement) of crown and head flatness of the strips rolled, by using the shape control model, which includes the comprehensive contour calculation model, have about 16% and 10% increase respectively, compared to those of strips rolled by using manual operation. 展开更多
关键词 hot rolled strip strip shape control comprehensive contour wear contour thermal contour
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Effect of Load Distribution on Strip Crown in Hot Strip Rolling 被引量:1
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作者 HongshuangDI JianzhongXU +4 位作者 DianyaoGONG XianghuaLIU GuodongWANG XiaomingHE LiyingBA 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2004年第3期330-334,共5页
In order to establish precision model, a software to calculate the strip crown of four-high hot rolling mill was developedby using affecting function method according to the strip crown calculation theory. The effect ... In order to establish precision model, a software to calculate the strip crown of four-high hot rolling mill was developedby using affecting function method according to the strip crown calculation theory. The effect of work roll diameter,unit width rolling load, roll bending force, work roll crown, initial strip crown and reduction, etc, on load distributioneffect rate was simulated by using the software. The results show that the load distribution effect rate increaseswith the increase of strip width, work roll diameter, unit width rolling load, roll bending force, work roll crown,initial strip crown and reduction. Based on the simulation results, base value of load distribution effect rate andfitting coefficients of six power polynomial of load distribution effect rate modification coefficient were determinedconsidering all of the above parameters. A simplified mathematical model for calculating load distribution effect ratewas established. 展开更多
关键词 hot strip rolling Four-high mill Affecting function Load distributionv Crown control
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国内铜板带发展现状与热轧技术的创新方向分析
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作者 韩晨 《有色金属加工》 CAS 2024年第1期1-8,共8页
文章论述了国内铜板带行业的发展现状,指出铜板带的热轧应分别从理论和技术,生产和工艺,设备设计制造,生产线配置和工程设计等方面进行基础性的研究和改进,并在工程项目的实践中不断创新。
关键词 铜板带 热轧 控轧控冷 技术 创新
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热轧宽带钢极薄板轧制失稳原因分析与控制
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作者 杨博 艾铖珅 +3 位作者 孟凡志 董洋 汪涵 王海峰 《鞍钢技术》 CAS 2024年第4期68-70,共3页
基于鞍钢股份有限公司热轧带钢厂2150ASP生产线轧制情况,对热轧宽带钢极薄板轧制失稳导致的顺折事故进行了分析。结果表明,临近年修末期,精轧机组的设备精度下降,厚度精度下降,F6机架的自动厚度控制液压缸动作幅度大且响应快,导致了顺... 基于鞍钢股份有限公司热轧带钢厂2150ASP生产线轧制情况,对热轧宽带钢极薄板轧制失稳导致的顺折事故进行了分析。结果表明,临近年修末期,精轧机组的设备精度下降,厚度精度下降,F6机架的自动厚度控制液压缸动作幅度大且响应快,导致了顺折事故的发生。通过优化精轧自动厚度控制响应速度、动作限幅以及功能选用,有效解决了轧制失稳导致的顺折问题,顺折事故发生率由0.046%降低至0.011%。 展开更多
关键词 热轧带钢 轧制失稳 顺折 自动厚度控制
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ESP连铸结晶器在线调宽功能应用与实践
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作者 来庆斌 金柱元 +3 位作者 李亮 陈洪民 李晓冬 赵斌 《南方金属》 CAS 2024年第4期40-42,共3页
基于ESP无头轧制产线的特点和ESP连铸结晶器调宽功能,通过制定在线调宽策略,实现ESP高拉速、高通钢量条件下,在线调宽生产非标宽度产品的工业化稳定生产。
关键词 ESP 无头轧制 结晶器 在线调宽
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蚁群优化算法协同深度极限学习机的热连轧宽度预测模型
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作者 李嘉林 高杰 丁敬国 《材料与冶金学报》 CAS 北大核心 2024年第5期497-504,共8页
热连轧粗轧生产过程中,为解决换规格后宽度设定精度低的难题,提出了一种蚁群优化算法协同深度极限学习机(ant colony optimization deep extreme learning machine,ACO-DELM)的热连轧粗轧宽度预测方法.该方法将蚁群优化算法应用于DELM... 热连轧粗轧生产过程中,为解决换规格后宽度设定精度低的难题,提出了一种蚁群优化算法协同深度极限学习机(ant colony optimization deep extreme learning machine,ACO-DELM)的热连轧粗轧宽度预测方法.该方法将蚁群优化算法应用于DELM网络中,以提高其预测精度和泛化能力.先利用数据预处理方法对原始数据进行异常值的剔除和数据归一化.然后,使用蚁群优化算法对DELM的隐藏层节点数、迭代次数进行优化,在隐藏层节点数达到95个、迭代次数为480次时,DELM模型的预测性能最佳,其在预测不同规格带钢平均宽度时,决定系数R^(2)达到0.9989,97.98%的样本点预测误差分布在-7~7 mm.应用结果表明,与传统的深度极限学习机(DELM)、卷积神经网络(CNN)等模型相比,ACO-DELM模型在预测精度和泛化能力上有明显的提升,可有效应用于热轧带钢的平均宽度预测. 展开更多
关键词 热连轧 蚁群优化算法 深度极限学习机 宽度预测
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Ti微合金化400 MPa级光伏支架用钢的开发 被引量:1
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作者 果超 成生伟 +5 位作者 刘西峰 林瑞民 贾思贤 张丹 王彦文 杜晓建 《山西冶金》 CAS 2024年第2期21-22,共2页
详细介绍了山西建龙1500生产线试制400 MPa级光伏支架用热轧钢带的成分设计、工艺路线以及产品质量情况。生产实践表明,按照设计的成分和工艺生产的光伏支架用热轧带钢的组织为铁素体+少量珠光体,拉伸性能和冷弯性能优异,能够满足用户... 详细介绍了山西建龙1500生产线试制400 MPa级光伏支架用热轧钢带的成分设计、工艺路线以及产品质量情况。生产实践表明,按照设计的成分和工艺生产的光伏支架用热轧带钢的组织为铁素体+少量珠光体,拉伸性能和冷弯性能优异,能够满足用户的使用要求。 展开更多
关键词 TI微合金化 光伏支架 热轧钢带 控轧控冷技术
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基于改进斑点鬣狗算法的热轧带钢负荷分配智能优化
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作者 王奎越 高磊 +2 位作者 宋君 曹忠华 赫竟彤 《鞍钢技术》 CAS 2024年第1期26-32,共7页
针对热连轧过程中由于负荷分配不均匀导致板形控制效果不佳的问题,以传统的轧制机理为基础建立负荷分配均匀、板形良好的目标函数,分别采用斑点鬣狗算法和改进斑点鬣狗算法进行单目标和双目标的负荷分配的优化求解。结果表明,改进斑点... 针对热连轧过程中由于负荷分配不均匀导致板形控制效果不佳的问题,以传统的轧制机理为基础建立负荷分配均匀、板形良好的目标函数,分别采用斑点鬣狗算法和改进斑点鬣狗算法进行单目标和双目标的负荷分配的优化求解。结果表明,改进斑点鬣狗算法将末机架的相对凸度差从0.000 834 5降低到0.000 014 83和-0.000 026 34,且在允许的范围内,上游机架负荷分配合理,充分发挥了轧机的轧制能力。 展开更多
关键词 热轧带钢 负荷分配 板形控制 改进斑点鬣狗算法
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热轧带钢镰刀弯产生原因与控制
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作者 赵明明 庞博 郭建璐 《新疆钢铁》 2024年第3期126-128,共3页
热轧带钢是重要的钢铁产品,热连轧是热轧带钢生产的主要方式之一,其中带钢镰刀弯是热轧产线的一个重要指标。实际热轧带钢生产中,成品带钢头部和尾部都会产生镰刀弯,对后续的卷取工艺造成不利因素,对成品质量也起到了重大的影响,同时易... 热轧带钢是重要的钢铁产品,热连轧是热轧带钢生产的主要方式之一,其中带钢镰刀弯是热轧产线的一个重要指标。实际热轧带钢生产中,成品带钢头部和尾部都会产生镰刀弯,对后续的卷取工艺造成不利因素,对成品质量也起到了重大的影响,同时易导致轧制跑偏产生的废钢事故。本文主要对热轧生产中出现的镰刀弯的原因和相应控制手段进行阐述,为进一步提高轧制的稳定性和产品质量,积累一定经验。 展开更多
关键词 镰刀弯 调整方法 水平值 热轧带钢
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铸机热调宽配套定宽压力机工艺应用的节能效果研究
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作者 杨飞 何杨开 +3 位作者 李建科 黄文昌 罗文序 陈俊屹 《冶金信息导刊》 2024年第6期29-31,24,共4页
针对广西钢铁集团230 mm×1650 mm双流板坯在线热调宽功能和1780 mm热连轧机组定宽压力机减宽功能互相耦合下节能效果进行研究。研究发现,铸机热调宽配合压力定宽机工艺应用在2023年8个月的时间里有效节能约17561.5 MWh,约减少5699 ... 针对广西钢铁集团230 mm×1650 mm双流板坯在线热调宽功能和1780 mm热连轧机组定宽压力机减宽功能互相耦合下节能效果进行研究。研究发现,铸机热调宽配合压力定宽机工艺应用在2023年8个月的时间里有效节能约17561.5 MWh,约减少5699 t二氧化碳的排放。 展开更多
关键词 板坯铸机 在线热调宽 热连轧机组 定宽压力机 节能
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Development of New Generation Cooling Control System After Rolling in Hot Rolled Strip Based on UFC 被引量:9
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作者 LI Hai-jun LI Zhen-lei +2 位作者 YUAN Guo WANG Zhao-dong WANG Guo-dong 《Journal of Iron and Steel Research International》 SCIE EI CAS CSCD 2013年第7期29-34,共6页
Ultra-fast cooling (UFC) is an advanced technology in hot rolling field. Through this technology, great changes on the run-out table are produced in the strip cooling process. In order to adapt to these changes, a n... Ultra-fast cooling (UFC) is an advanced technology in hot rolling field. Through this technology, great changes on the run-out table are produced in the strip cooling process. In order to adapt to these changes, a new gen-eration of hot strip cooling control system after rolling was developed based on the UFC basic principle. The system can not only accomplish temperature of UFC delivery side, coiling temperature, cooling rate, etc, and multi-objective accuracy control, but also offer more flexibility and new attractive possibilities in terms of cooling pattern on the run-out table, which could be of prime importance for the production of some difficult steels. In addition, through the time-velocity-distance (TVD) profile prediction combined with speed feed-forward control and coiling temperature feedback control, the coiling temperature control precision can be effectively improved during accelerative rolling in the system. At present, the system has been successfully used in the conventional strip production line and CSP short process production line, and its application effect is perfect. 展开更多
关键词 ultra-fast cooling hot rolled strip laminar cooling new generation cooling control system run-out rollertable strip cooling
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Research and application of approximate rectangular section control technology in hot strip mills 被引量:2
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作者 Hai-nan He Jian Shao +4 位作者 Xiao-chen Wang Quan Yang Yang Liu Dong Xu You-zhao Sun 《Journal of Iron and Steel Research International》 SCIE EI CAS CSCD 2021年第3期279-290,共12页
Profile requirements of silicon steel strip are extremely high and the thickness difference of cold-rolled products is usually less than 7μm,and the profile quality of hot-rolled strip is the key to ensure the thickn... Profile requirements of silicon steel strip are extremely high and the thickness difference of cold-rolled products is usually less than 7μm,and the profile quality of hot-rolled strip is the key to ensure the thickness difference of cold-rolled products.In order to produce the silicon steel strip with high-precision shape,the concept of quasi-rectangular rolling during hot continuous rolling was put forward;the equipment configuration and technical method of approximate rectangular section control were studied.Through the roughing multi-target load distribution technology and the roll configuration technology for uniform wear of a 4-high rolling mill,the strip crown of transfer bar was reduced and the profile control stability was guaranteed.Configuring variable contact back-up roll technology on all stands in the finishing rolling process,equipped with symmetry variable taper work roll and long-stroke intelligent shifting strategy in the downstream stands,and using side rolling lubrication technology can make the roll wear more uniform,reduce the edge drop of silicon steel strip,improve the profile quality,and make the strip section of finishing exit"quasi-rectangular".In addition,induction furnace and side heater were also equipped to guarantee the temperature uniformity of the strip,so as to improve the stability of profile control.The whole control technology is based on the 1580-mm hot continuous rolling production line,designed,and developed according to the characteristics of equipment and products,and has been successfully applied,which can obtain the approximate rectangular strip section satisfying the flatness quality,and improve the strip section precision of silicon steel and other products. 展开更多
关键词 Approximate rectangular section hot strip mill Transfer bar Roll contour Shifting strategy Profile control
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Concave Cooling Control Method for Hot-rolled Strip
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作者 Qiu Chunlin, Gao Xiuhua, Qi Kemin, Wen Jinglin Northeastern University, Shenyang 110004, China 《稀有金属材料与工程》 SCIE EI CAS CSCD 北大核心 2011年第S3期266-268,共3页
Hot rolled strips usually have higher strength and lower plasticity at the ends, and the mechanical properties are distributed unevenly along the length direction. Such phenomena are caused by the different cooling ra... Hot rolled strips usually have higher strength and lower plasticity at the ends, and the mechanical properties are distributed unevenly along the length direction. Such phenomena are caused by the different cooling rates between the end and the center. The ends of the coiled strip cool down faster than the center, inducing finer grains in the sections. Furthermore, the center of the coil is kept at high temperature for longer time, which affects the precipitation of the carbides and creates the different mechanical properties from the ends. In this paper, the temperature field of the strip during cooling was simulated to discover the characteristics of the temperature change and the effect on mechanical properties. Based on the analysis, a concept of concave cooling control was introduced and implemented in the production. Results indicated that applying the concave cooling control method could significantly improve the uniformity of the properties and promote the quality of the products. 展开更多
关键词 CONCAVE COOLING control hot ROLLING strip finite DIFFERENCE method
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