轧机AGC液压缸的结构性能及可靠性研究

发布时间：2018-04-24 02:25

本文选题：轧机AGC液压缸 + 结构　；参考：《武汉科技大学》2012年硕士论文

【摘要】：随着社会工业的快速发展，在现代冶金行业里，伴随高精度液压AGC控制系统在轧钢生产线上越来越广泛地使用，，液压AGC控制技术的应用也就越来越引起大家的关注。液压厚度控制系统(AGC)是现代大型板带轧机的核心系统，而轧机伺服液压缸是AGC系统中的直接执行元件，工作在AGC系统的闭环回路中，是回路中的一个关键环节，其性能指标直接影响系统的精度和动、静态品质，因此从轧机AGC液压缸本身的研究出发，对于优化伺服液压缸的设计，提高液压缸本身和系统的可靠性有着很大的帮助。本文结合国内外轧机伺服液压缸的生产和发展状况，对轧机AGC液压缸自身的结构、性能和可靠性三部分内容进行研究。首先，介绍了轧机AGC液压缸的结构和原理，细述了其主要的零部件如活塞和缸体的加工工艺；并对轧机AGC液压缸进行了静态和动态特性的测试。其次，从国内液压缸的实际生产情况出发，对轧机AGC液压缸的维修记录进行统计并对其可靠性进行了调查，获得了真实可靠的数据；在此基础上，运用有限元分析方法，借助ANSYS软件对轧机AGC液压缸上使用最为广泛的格莱圈密封在其无油压和正常工作压力下进行了变形和力学情况的分析，有助于了解密封圈在液压缸上的磨损和失效情况。最后，结合实际情况，从轧机AGC液压缸主要零部件的机加工生产、产品的装配工艺、AGC液压缸的特殊处理和防锈除锈及去污处理等几方面提出了合理的建议，以促进在实际生产过程中延长轧机AGC液压缸的有效使用寿命，提高其可靠性。
[Abstract]:With the rapid development of social industry, with the high precision hydraulic AGC control system more and more widely used in steel rolling production line, the application of hydraulic AGC control technology has attracted more and more attention in modern metallurgical industry. The hydraulic thickness control system (AGC) is the core system of the modern large plate strip mill, and the servo hydraulic cylinder of the mill is the direct executive element in the AGC system, which works in the closed loop of the AGC system and is a key link in the loop. The performance index directly affects the precision and the dynamic and static quality of the system. Therefore, the research on the AGC hydraulic cylinder of the rolling mill is of great help to optimize the design of the servo cylinder and improve the reliability of the hydraulic cylinder itself and the system. According to the production and development of servo hydraulic cylinder of rolling mill at home and abroad, the structure, performance and reliability of AGC hydraulic cylinder of rolling mill are studied in this paper. Firstly, the structure and principle of AGC hydraulic cylinder of rolling mill are introduced, the processing technology of its main parts such as piston and cylinder block is described in detail, and the static and dynamic characteristics of AGC hydraulic cylinder of rolling mill are tested. Secondly, according to the actual production situation of domestic hydraulic cylinder, the maintenance record of AGC cylinder of rolling mill is statistically analyzed and its reliability is investigated, and the real and reliable data are obtained, on the basis of which, the finite element analysis method is used. With the help of ANSYS software, the deformation and mechanics of the most widely used Greer ring seal on the AGC hydraulic cylinder of rolling mill under no oil pressure and normal working pressure are analyzed, which is helpful to understand the wear and failure of the sealing ring on the hydraulic cylinder. Finally, according to the actual situation, some reasonable suggestions are put forward from the following aspects: machining and production of main parts of AGC hydraulic cylinder of rolling mill, special treatment of product assembly technology and anti-rust and rust removal and decontamination, etc. In order to prolong the effective service life and improve the reliability of AGC hydraulic cylinder in the actual production process.
【学位授予单位】：武汉科技大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH137.51

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