厚板轧机液压厚度自动控制系统的研制

发布时间：2018-04-30 14:34

本文选题：厚板轧机 + 厚度自动控制系统　；参考：《哈尔滨工业大学》2015年硕士论文

【摘要】：在中厚板行业产能过剩的形势下,必须依靠产品质量保生存,依靠技术创新求发展,企业才能在市场竞争日趋严重的情况下立于不败之地。本文结合鞍钢股份鲅鱼圈5500mm厚板轧机生产实际情况,以鞍钢股份鲅鱼圈5500mm厚板轧机液压厚度自动控制(HGC)系统为背景,通过建立厚板轧机单侧HGC系统数学模型和AMEsim仿真模型,研究轧机精度控制的核心技术轧机液压厚度自动控制系统,实现提高HGC系统工作过程的稳定性和可靠性,提高HGC系统对钢板厚度的控制精度的目的。具体研究内容如下:(1)探索板带厚度控制的基本原理,深入分析影响钢板厚度的主要因素。(2)结合鞍钢鲅鱼圈5500mm厚板线的实际生产情况,介绍了厚板轧机液压辊缝控制系统的主要结构组成、探索了鞍钢鲅鱼圈5500 mm厚板轧机液压自动厚度控制系统的主要功能及工作原理,建立单侧辊缝位置控制系统数学模型,在MATLAB/Simulink环境下对所建数学模型进行仿真分析,并用仿真的结果对厚板生产线实际的PID控制器参数修正的正确性进行验证。(3)运用AMEsim软件仿真分析了厚板轧机HGC系统运行过程中震荡和回油冲击大问题,提出了通过调整蓄能器充氮压力值以及在液压系统回油单向阀前管路上安装蓄能器的方法,解决厚板轧机HGC系统震荡和回油冲击大的问题;提出了通过增加气体保护系统改善HGC磁尺工作环境的方案,解决了系统运行过程经常出现位置检测单元反馈错误的问题。本文的研究成果在鞍钢股份鲅鱼圈5500mm厚板轧机得到了成功的应用,提高了HGC系统对钢板的控制精度,增强了HGC系统工作过程的稳定性和可靠性,降低了生产成本,增强了企业的竞争力。
[Abstract]:Under the situation of overcapacity in medium and heavy plate industry, we must rely on the survival of product quality and the development of technological innovation. Only when the market competition becomes more and more serious can the enterprise be in an invincible position. In this paper, based on the actual production situation of 5500mm thick plate mill of Bayuquan ring in Angang, taking the hydraulic automatic thickness control system of Bayuquan 5500mm thick plate mill in Angang as background, the mathematical model and AMEsim simulation model of HGC system on one side of thick plate mill are established. The key technology of mill precision control is the automatic hydraulic thickness control system of rolling mill, which can improve the stability and reliability of HGC system and improve the control precision of HGC system to steel plate thickness. The specific research contents are as follows: 1) exploring the basic principle of strip thickness control, deeply analyzing the main factors affecting the thickness of steel plate. (2) combining with the actual production situation of 5500mm thick plate line in Bayuquan, Anshan Iron and Steel Co. This paper introduces the main structure of hydraulic roll gap control system for thick plate mill, probes into the main function and working principle of hydraulic automatic thickness control system of Bayuquan 5500 mm thick plate mill in Angang, and establishes the mathematical model of the position control system of single side roll gap. Under the environment of MATLAB/Simulink, the mathematical model is simulated and analyzed. The correctness of PID controller parameter correction in thick plate production line is verified with the result of simulation. AMEsim software is used to simulate and analyze the problems of shock and oil return shock in the operation of HGC system of thick plate mill. The method of adjusting the pressure of nitrogen filling of accumulator and installing accumulator on the front line of hydraulic return valve is put forward to solve the problem of heavy plate mill HGC system shock and oil return shock. The scheme of improving the working environment of HGC magnetic ruler by adding gas protection system is put forward, which solves the problem that the feedback error of position detection unit often occurs during the operation of the system. The research results of this paper have been successfully applied in the 5500mm thick plate mill of Bayuquan ring of Angang, which improves the control precision of the HGC system to the steel plate, enhances the stability and reliability of the working process of the HGC system, and reduces the production cost. Enhanced the competitiveness of the enterprise.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TG334.9

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