【作者】 王俊；

【导师】 徐林； 刘顺东；

【作者基本信息】 东北大学 ， 控制工程（专业学位）， 2014， 硕士

【摘要】 国民经济的快速提高,使得当今社会对热轧板带的需求量也日益增多,随着汽车制造业、造船业、家电生产以及化工建筑等各个行业对不同规格热乳板带的需求,对厂家生产的带钢产品质量的要求也逐渐提高。带钢质量的好坏取决于轧制生产线上的诸多控制环节,而飞剪控制对于带钢产品质量起着重要的影响作用,飞剪常用来横向剪切运动轧件不规则的头部、尾部、事故碎断或定尺剪切,以方便后续轧机的咬入、减少轧件对轧辊的冲击和快速处理事故等,其工作性能的好坏直接影响轧线的生产效率和经济效益,因此对热轧板带的飞剪控制进行研究有着极其重要的意义。本文以首钢京唐钢铁厂2250mm热轧生产线为依托,结合生产工艺及飞剪结构,对热轧带钢飞剪控制在现代带钢生产线中的重要作用以及当前飞剪控制的研究现状进行分析,对飞剪控制系统进行设计,对生产过程中存在的问题进行分析研究与改进,主要工作如下:对首钢京唐2250mm热轧生产工艺进行介绍,深入分析飞剪系统的结构和飞剪的工作原理,根据生产工艺和控制要求给出了飞剪控制方案;结合飞剪机组传动的实际特点,考虑到现场维护等诸多因素,确定飞剪电气传动系统的传动方式,设计传动系统、整流及逆变装置、变频调速系统。给出飞剪控制系统总体方案,设计系统的三层网络构架,选用TMEIC V3000系列PLC完成系统控制,配置PLC接口,设计软件功能,给出飞剪控制策略,实现飞剪剪切速度、剪切角选择、剪切启动时刻等控制,针对飞剪剪切点漂移的问题给出动态补偿控制方案,完成飞剪控制系统HMI功能设计。针对运行调试过程中出现的飞剪切损率大、剪切精度不高等问题,分析并提出影响飞剪剪切精度的四个因素,给出相应的优化剪切方案。系统实际运行表明,京唐2250mm热乳飞剪控制系统剪切时飞剪剪刃能够准确、快速的切断带钢,监控画面参数显示稳定,控制效果良好,产生了巨大的经济效益。更多还原

【Abstract】 With the rapid increase of national economy,the social demand for hot rolling strip is also increasing.Along with the demand for different specification hot rolling in automobile industry,shipbuilding,goods manufacturing,chemical construction and other industries,the manufacturers of the strip product quality requirements also gradually improve.The control process of strip quality depends on the rolling production line,the flying shear control for strip steel product quality plays an important role,flying shear is often used for transverse shear motion to the workpiece in irregular head,tail,accident broken or cut to length,in order to facilitate the subsequent mill bite,reduce the impact the workpiece roll and rapid processing accident,its performance will have a direct impact on the rolling production efficiency and economic benefit,so hot rolling strip flying shear control research is very important.In this thesis,base on the 2250mm hot rolling production line of Shougangjingtang,combined with the production process and the flying shear structure,analyze the important role of flying shear control in the modern strip production line in hot rolling strip and the current research situation of the flying shear control,design the flying shear control system,and analyze on the study and improve the existing problems in the production process,the main work is as follows:Introduce the production process of Shougangjingtang 2250mm Hot rolling,in-depth analyze the structure of the flying shear control system and the working principle,according to the production process and control requirements of the flying shear,the control scheme is given;Combined with the actual characteristics of the flying shear machine drive,taking into account the field maintenance and other factors,determine the transmission mode of the flying shear electric drive system,design the transmission system,the rectifier and inverter and the variable frequency speed regulation system.Given the flying shear control system scheme,design the three layer network architecture system,select TMEIC V3000 series PLC control system,configure PLC interface,design the software function,given the flying shear control strategy,implementation of flying shear velocity,shear angle,shear start time control,in order to solve the problem of the dynamic compensation control scheme of flying shear point drift,complete the flying shear control system design of HMI function.In view of the operation debugging process of flying shear loss rate is large,the shearing precision is not high,analyze and put forward the four factor affect the accuracy of the flying shear,shearing optimization scheme of the corresponding.The actual operation of the system shows that,shearing blade of the fast flying Jingtang 2250mm hot flying shear control system can cut strip accurately and fast,monitoring menu parameters show stable,good control effect,produced tremendous economic benefits.更多还原