CSP热轧机液压系统振动仿真研究

发布时间：2018-09-17 17:32

【摘要】：CSP（Compact Strip Production紧密式板带生产）生产线是邯郸钢铁集团从德国西马克公司购买的一套薄板生产线，是当时最先进的生产钢制板带材的轧制技术，该生产线全部生产系统由6机架组成，从投产至今，精轧机组液压系统经常发生振动故障，最为严重的振动故障发生于F3精轧机组液压AGC（AutomaticGauge Control板带厚度自动控制）系统，常常不得不通过降低轧制速度以及多次来回反复轧制来控制所轧制的板带材的厚度，对企业的正常生产带来了很大的影响。本课题以该厂F3精轧机组液压AGC系统振动故障为研究对象，本课题结合国内外对其他设备的研究方法，加之个人的创新方法来研究其产生振动故障的原因，找出相关振源，并最终提出解决措施。本论文主要研究了以下内容：（1）建立CSP热轧机F3机架组液压AGC系统重要组成元件液压缸和电液伺服阀的数学模型；（2）运用AMESim仿真软件建立CSP热轧机液压AGC系统重要元件的仿真模型，，分别针对液压缸的内外泄漏以及电液伺服阀泄漏进行仿真，并获取液压缸活塞杆的输出位移；（3）对整个液压AGC系统建立故障树模型，分析所有可能发生故障的原因，并利用最小割集以及结构重要度概念来研究CSP热轧机液压AGC系统振动故障的原因；（4）根据故障树的分析结果，针对液压缸泄漏以及电液伺服阀阀芯行程不灵敏在邯钢现场对CSP热轧机液压AGC系统现场实验，并运用AMESim仿真软件建立仿真模型，运行仿真，并对比理论分析与现场测试结果，确定了液压缸泄漏以及电液伺服阀阀芯不灵敏引起了轧机液压AGC系统的振动故障，然后提出相应的改进措施，从而来减小CSP热轧机液压AGC系统的振动故障。
[Abstract]:The CSP (Compact Strip Production compact plate and strip production line is a set of thin plate production line purchased by Handan Iron and Steel Group from Germany's West Mark Company. It is the most advanced rolling technology for steel plate and strip production at that time. The production system of the production line is composed of six stands. From production to now, the hydraulic system of finishing mill often occurs vibration failure, the most serious vibration fault occurs in F3 finishing mill hydraulic AGC (AutomaticGauge Control strip thickness automatic control system. It is often necessary to control the thickness of the rolled sheet and strip by reducing the rolling speed and rolling back and forth many times, which has a great impact on the normal production of enterprises. This subject takes the vibration fault of hydraulic AGC system of F3 finishing mill as the research object, combining the research methods of other equipments at home and abroad, and personal innovative methods to study the cause of vibration fault, find out the related vibration source. And finally put forward the solution measures. The main contents of this paper are as follows: (1) establish the mathematical model of hydraulic cylinder and electro-hydraulic servo valve, which is an important component of CSP hot mill F3 stand group hydraulic AGC system; (2) the simulation model of the important components of CSP hot rolling mill hydraulic AGC system is established by using AMESim simulation software. The internal and external leakage of hydraulic cylinder and the leakage of electro-hydraulic servo valve are simulated, and the output displacement of piston rod of hydraulic cylinder is obtained. (3) establish the fault tree model for the whole hydraulic AGC system, analyze all possible causes of the failure, and use the concept of minimum cut set and structural importance to study the causes of the vibration failure of the hydraulic AGC system of CSP hot rolling mill; (4) according to the result of fault tree analysis, the hydraulic cylinder leakage and the valve core stroke of electro-hydraulic servo valve are not sensitive to the hydraulic AGC system of CSP hot rolling mill in Handan Iron and Steel Co. Compared with the theoretical analysis and the field test results, it is determined that the hydraulic cylinder leakage and the valve core insensitivity of the electro-hydraulic servo valve caused the vibration failure of the hydraulic AGC system of the rolling mill, and the corresponding improvement measures were put forward. In order to reduce the CSP hot mill hydraulic AGC system vibration fault.
【学位授予单位】：河北工程大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TG333;TH137

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