电镀锡组合软熔温度控制模型研究

发布时间：2018-04-07 15:51

本文选题：电镀锡　切入点：软熔　出处：《安徽工业大学》2017年硕士论文

【摘要】：在工业经济社会迅猛发展的背景下,不同应用场合对冷轧带材的质量提出了越来越严格的要求。实践表明,为了提高镀锡产品的质量,在生产过程中如何通过对带钢温度进行合理控制以期获得优良的表面质量和精确的板形已成为现场工程技术人员亟待解决的问题之一。镀锡板是冷轧产品中备受关注、需求量很大的产品。本文以南京某钢铁冷轧厂1420mm冷轧电镀锡机组系统优化为项目背景,研究和分析了镀锡板软熔工艺,并对电阻软熔和感应软熔的设备进行了简要阐述,结合原系统的控制模型,分析了软熔段温度控制的基本原理和策略。本文结合软熔设备工作机理和传热学基本原理对带钢加热过程中热量传递方式进行了分析,根据带钢在软熔过程中的加热特点,推导了热量传递的计算方程,据此建立了软熔过程的温度数学模型。本文以原系统为基础,利用建立的数学模型,在LabVIEW环境下建立了一套带钢从软熔入口到出口的温度控制模型,对实际生产的过程控制进行模拟,求得出口温度的变化曲线。在上述模型的基础上,选取典型离线轧制数据进行仿真计算,并取该厂轧制数据离线计算温度值与温度实测值进行比较,验证温度预测模型的精度。
[Abstract]:Under the background of rapid development of industrial economy and society, more and more strict requirements are put forward for the quality of cold rolled strip in different applications.The practice shows that in order to improve the quality of tin plated products, how to control the strip temperature reasonably in order to obtain good surface quality and accurate shape has become one of the urgent problems to be solved by engineers and technicians in the field.Tinplate is a kind of cold-rolled product which needs a lot of attention.In this paper, based on the project background of optimizing the system of 1420mm cold rolling and electroplating tin plating unit in a cold rolling mill of iron and steel in Nanjing, the soft melting process of tinplate is studied and analyzed, and the equipment of resistance soft melting and induction soft melting is briefly described, and the control model of the original system is combined with the control model of the former system.The basic principle and strategy of temperature control in soft melting section are analyzed.Based on the working mechanism of soft melting equipment and the basic principle of heat transfer, the heat transfer mode in the heating process of strip steel is analyzed in this paper. According to the heating characteristics of strip steel in the process of soft melting, the calculation equation of heat transfer is derived.Based on this, a mathematical model of the temperature of the soft melting process is established.Based on the original system and using the established mathematical model, a set of temperature control model of strip steel from soft melt inlet to outlet is established under LabVIEW environment. The process control of actual production is simulated and the curve of outlet temperature is obtained.On the basis of the above model, the typical off-line rolling data are selected for simulation calculation, and the off-line calculated temperature values of the rolling data in the plant are compared with the temperature measured values to verify the accuracy of the temperature prediction model.
【学位授予单位】：安徽工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TQ153.13;TG335.12

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