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Calculation of Taper Rolling Time in Plan View Pattern Control Process

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Journal of Iron and Steel Research International 2006年第5期13卷 1-3页

作者： jiao zhi-jie hu xian-lei zhao zhong liu xiang-hua wang guo-dong State Key Laboratory of Rolling and Automation Northeastern University Shenyang 110004 Liaoning China

The forward slip model with adhesion was used to derive the formula of calculating taper rolling time. The relation between the rolling time and the taper length and the relation between the rolling time and the taper thickness can be obtained. The numerical solution for this formula was used on site. According to the simulation result, the roll gap value should be changed linearly with rolling time.

关键词： plan view pattern control forward slip model taper time calculation

Application of Crown-Flatness Vector Analysis in Plate Rolling Schedule

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Journal of Iron and Steel Research International 2004年第5期11卷 22-26页

作者： hu xian-lei wang zhao-dong jiao zhi-jie zhao zhong liu xiang-hua wang guo-dong Northeastern University

A simple plate crown model was introduced,and the crown-flatness vector analysis method was *** on the plate rolling technology,the rolling schedule design of elongation phase is divided into three *** step is to calculate the reductions of first pass of elongation making full use of the mill capability to decrease the total pass *** second step is to calculate the pass reduction for the last three or four passes to control crown and flatness by crown-flatness vector analysis *** the third step,the maximum rolling force limit and the total pass number are adjusted to make the plate gauge at exit equal to target gauge with satisfactory *** on-line application shows that this method is effective.

关键词： crown flatness,plate rolling schedule steepness

Optimization of Holding Temperature and Holding Thickness for Controlled Rolling on Plate Mill

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Journal of Iron and Steel Research International 2006年第3期13卷 21-25页

作者： hu xian-lei zhao zhong wang Jun wang zhao-dong liu xiang-hua wang guo-dong State Key Laboratory of Rolling and Automation Northeastern University Shenyang 110004 Liaoning China

Holding temperature and holding thickness are main parameters for two-phase controlled rolling on plate mill. The optimization of holding temperature and holding thickness for pass schedule calculation of two-phase controlled rolling on plate mill was presented and its feature is as follows：（1） Determination of holding thickness can be automatically obtained based on the influence of mill safety limits, tracking zone length and holding time on holding thickness; （2） Determination of holding temperature can be automatically obtained and the holding time can be reduced as much as possible; （3） Algorithm can modify the holding temperature and thickness depending on slab size and product size.

关键词： plate two-phase controlled rolling pass schedule holding temperature holding thickness

Application of Approximation Full-Load Distribution Method to Pass Scheduling on Plate Mill With Hydro-Bending System

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Journal of Iron and Steel Research International 2006年第4期13卷 22-26页

作者： hu xian-lei ZHANG Qi-sheng zhao zhong TIAN Yong liu xiang-hua wang guo-dong State Key Laboratory of Rolling and Automation Northeastern University Shenyang 110004 Liaoning China Plate Plant Hebei Wenfeng Iron and Steel Co Ltd Wu＇an 056300 Hebei China

The influence of positive bending system on plate crown control was researched. The approximation fullload distribution method for pass scheduling was put forward. This method can not only make full use of the mill ca... 详细信息

关键词： hydro-bending pass schedule plate shape crown

Analysis of Process Control Model of Plate MAS Rolling

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Journal of Iron and Steel Research International 2010年第4期17卷 31-33页

作者： Zhu Fu-wen hu xian-lei zhao zhong liu xiang-hua State Key Laboratory of Rolling Technology and Automation Northeastern University Shenyang 110004 Liaoning China

Using the identification quantity to identify the long ear disfigurement was brought up, and by calculation, it can be found that identification quantity should be set as the quantity of long ear disfigurement of the position which is about 0. 2 times of plate width to the plate border. Conception of plate head tiny cell was brought up, and the long ear disfigurement was uncoupled into the product of elongation percentage and length of tiny cell. On the basis of prediction of long ear disfigurement, process control model of MAS rolling was built up, and application indicates that it can fit the on-line production and eliminate the long ear disfigurement commendably.

关键词： plate plane shape plan view pattern MAS rolling long ear disfigurement head disfigurement

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中厚板轧机设定计算功能的在线实施

东北大学学报（自然科学版） 2005年第7期26卷 644-647页

作者：矫志杰胡贤磊赵忠刘相华东北大学轧制技术及连轧自动化国家重点实验室辽宁沈阳110004

针对中厚板轧机,研究了如何将设定计算功能嵌入过程控制系统,并应用于在线·将设定计算功能划分成轧制规程计算、轧机设定及控制参数计算以及模型自学习计算三个组成部分,分析了各部分的主要功能及其联系·设计了设定计算功能的在线数... 详细信息

针对中厚板轧机,研究了如何将设定计算功能嵌入过程控制系统,并应用于在线·将设定计算功能划分成轧制规程计算、轧机设定及控制参数计算以及模型自学习计算三个组成部分,分析了各部分的主要功能及其联系·设计了设定计算功能的在线数据流程和调用逻辑,根据具体轧线的检测仪表布置和生产工艺过程,多次调用设定计算功能·通过预设定计算、再设定计算、阶段前修正计算、道次修正计算、自学习计算以及待温时间修正计算,发挥设定计算及生产过程中实测数据的作用·

关键词：中厚板轧机过程控制设定计算数据流程调用逻辑在线应用

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中厚板轧线的坯料出炉时间控制

东北大学学报（自然科学版） 2006年第10期27卷 1102-1105页

作者：矫志杰胡贤磊赵忠刘相华东北大学轧制技术及连轧自动化国家重点实验室辽宁沈阳110004

针对中厚板轧线,研究了在实行控制轧制工艺时,如何对坯料的出炉时间进行合理控制,以满足多坯交叉轧制过程轧制节奏控制的需要.介绍了典型单机架中厚板轧线的设备布置情况,并根据不同交叉轧制情况下的轧制节奏控制状态确定坯料之间的轧... 详细信息

针对中厚板轧线,研究了在实行控制轧制工艺时,如何对坯料的出炉时间进行合理控制,以满足多坯交叉轧制过程轧制节奏控制的需要.介绍了典型单机架中厚板轧线的设备布置情况,并根据不同交叉轧制情况下的轧制节奏控制状态确定坯料之间的轧制间隔时间;根据具体轧线布局计算坯料的出炉运输时间,并确定坯料的出炉剩余时间.考虑其他非理想状况的影响因素,设置坯料出炉剩余时间极限值,实际控制中通过调整该值,保证坯料出炉时间控制的最佳效果.

关键词：中厚板轧线控制轧制交叉轧制轧制节奏控制运输时间出炉时间控制

Protective efficacy of an H5/H7 trivalent inactivated vaccine produced from Re-11, Re-12, and H7-Re2 strains against challenge with different H5 and H7 viruses in chickens

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Journal of Integrative Agriculture 2020年第9期19卷 2294-2300页

作者： ZENG xian-ying CHEN Xiao-han MA Shu-jie WU jiao-jiao BAO Hong-mei PAN Shu-xin liu Yan-jing DENG guo-hua SHI Jian-zhong CHEN Pu-cheng JIANG Yong-ping LI Yan-bing hu Jing-lei LU Tong MAO Sheng-gang guo Xing-fu liu Jing-li TIAN guo-bin CHEN hua-lan State Key Laboratory of Veterinary Biotechnology Harbin Veterinary Research InstituteChinese Academy of Agricultural SciencesHarbin 150069P.R.China Harbin Weike Biotechnology Development Company Harbin 150069P.R.China

We developed an H5/H7 trivalent inactivated vaccine by using Re-11, Re-12, and H7-Re2 vaccine seed viruses, which were generated by reverse genetics and derived their HA genes from A/duck/Guizhou/S4184/2017(H5N6) (DK/GZ/S4184/17) (a clade 2.***.4.4d virus), A/chicken/Liaoning/SD007/2017(H5N1) (CK/LN/SD007/17) (a clade 2.***.2.1d virus), and A/chicken/ Guangxi/SD098/2017(H7N9) (CK/GX/SD098/17), respectively. The protective efficacy of this novel vaccine and that of the recently used H5/H7 bivalent inactivated vaccine against different H5 and H7N9 viruses was evaluated in chickens. We found that the H5/H7 bivalent vaccine provided solid protection against the H7N9 virus CK/GX/SD098/17, but only 50–60% protection against different H5 viruses. In contrast, the novel H5/H7 trivalent vaccine provided complete protection against the H5 and H7 viruses tested. Our study underscores the importance of timely updating of vaccines for avian influenza control.

关键词： avian influenza H5/H7 trivalent vaccine Re-11 Re-12 and H7-Re2 strains protective efficacy

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中厚钢板侧弯的形成原因分析

钢铁 2006年第4期41卷 56-61页

作者：胡贤磊赵忠刘相华王国栋阎智平轧制技术及连轧自动化国家重点实验室(东北大学) 辽宁沈阳110004 首钢集团中厚板厂北京100043

基于4辊中厚板轧机,分析了坯料楔形、温度分布不均匀、轧机两侧刚度存在差异、推床对中不正、轧辊辊形和APC及AGC方式对中厚板侧弯的影响,得知温度分布不均匀、推床对中不正和轧辊辊形对侧弯影响较大,是今后控制侧弯的重要因素。这些分... 详细信息

基于4辊中厚板轧机,分析了坯料楔形、温度分布不均匀、轧机两侧刚度存在差异、推床对中不正、轧辊辊形和APC及AGC方式对中厚板侧弯的影响,得知温度分布不均匀、推床对中不正和轧辊辊形对侧弯影响较大,是今后控制侧弯的重要因素。这些分析对今后侧弯的控制方法提供一定的理论依据。通过首钢中厚板厂的应用实践,上述分析得到很好验证。

关键词：中厚板侧弯对中辊形