热轧地下卷取机助卷系统力学分析及踏步控制

发布时间：2018-05-28 15:06

本文选题：地下卷取机 + 助卷系统　；参考：《西安电子科技大学》2014年硕士论文

【摘要】：地下卷取机在现代热连轧带钢生产中处于十分重要的地位。目前国内各大钢铁公司使用的较先进的卷取机都是依赖国外技术，，国内尚欠缺自行系统地进行地下卷取机的整体设计能力。究其主要原因有，研究深度不够，基础性研究没有跟上实际应用，同时没有很好的掌握卷取机的工艺过程、结构参数，没有很好的建立数学模型以及控制数学模型等问题。提高现代热连轧设备的总体设计能力，推进热连轧成套技术国产化势在必行。本文以全面自主开发集成的唐钢热连轧1700生产线中的卷取设备为研究对象，经过充分消化国外先进技术，分别在卷取工艺及关键设备研制、助卷系统数理模型研究、理论研究踏步控制模型新探三个层面上，进行了全面总结和深入分析。其中理论研究所作出具体工作如下：根据唐钢1700卷取机的具体结构和工艺特点，进行了助卷辊系统的运动学、静力学分析，揭示了卷取机助卷系统辊缝、压力补偿系数、重力补偿系数和驱动油缸压力的变化规律。并对夹送辊单元的辊缝、压力变化规律进行了分析计算，结合夹送辊单元的自重、弹簧弹性力、主伺服液压缸的作用力、辊压力等，分析了诸力之间的相互影响关系。进行了力学分析和踏步函数控制的一些尝试性研究。本文为解决国产化过程中遇到的重大技术难题，起到了所应有的作用。同时本文的研究方法，为我国在地下卷取机自动踏步控制上，尽快推出拥有自主知识产权的专利，提供了新思路。
[Abstract]:The underground coiler is very important in the production of hot strip. At present, the advanced coiler used by major domestic iron and steel companies depends on foreign technology, and the whole design ability of underground coiler is still lacking in our country. The main reasons are that the research depth is not enough, the basic research does not keep up with the practical application, and at the same time, the process of the coiler, the structural parameters, the establishment of mathematical models and the control of mathematical models are not well grasped. It is imperative to improve the overall design capability of the modern hot strip rolling equipment and to promote the localization of the complete set of hot strip rolling technology. In this paper, taking the coiling equipment in the integrated hot strip 1700 production line of Tangshan Iron and Steel Company as the research object, after fully digesting the foreign advanced technology, the coiling process and the key equipment are developed, and the mathematical model of the coiling system is studied. Three levels of theoretical research on stepping control model, a comprehensive summary and in-depth analysis are carried out. Among them, the Institute of theoretical Studies has done the following: According to the concrete structure and technological characteristics of 1700 coiler of Tangshan Iron and Steel Co., the kinematics and statics analysis of coiling system are carried out, and the variation law of roll gap, pressure compensation coefficient, gravity compensation coefficient and driving cylinder pressure of coiling system are revealed. The variation law of roll gap and pressure of the clamping roller unit is analyzed and calculated. The mutual influence relationship between the various forces is analyzed according to the weight of the roller unit, the spring elastic force, the acting force of the main servo hydraulic cylinder, the roll pressure, and so on. The mechanical analysis and some tentative studies of step function control are carried out. This paper plays an important role in solving the major technical problems encountered in the process of localization. At the same time, the research method of this paper provides a new way for our country to launch the patent with independent intellectual property right as soon as possible in the automatic step control of underground coiler.
【学位授予单位】：西安电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TG333.24

【参考文献】