發(fā)布時間：2018-04-07 15:51

  本文選題：電鍍錫　切入點：軟熔　出處：《安徽工業(yè)大學》2017年碩士論文

【摘要】：在工業(yè)經(jīng)濟社會迅猛發(fā)展的背景下,不同應用場合對冷軋帶材的質(zhì)量提出了越來越嚴格的要求。實踐表明,為了提高鍍錫產(chǎn)品的質(zhì)量,在生產(chǎn)過程中如何通過對帶鋼溫度進行合理控制以期獲得優(yōu)良的表面質(zhì)量和精確的板形已成為現(xiàn)場工程技術(shù)人員亟待解決的問題之一。鍍錫板是冷軋產(chǎn)品中備受關(guān)注、需求量很大的產(chǎn)品。本文以南京某鋼鐵冷軋廠1420mm冷軋電鍍錫機組系統(tǒng)優(yōu)化為項目背景,研究和分析了鍍錫板軟熔工藝,并對電阻軟熔和感應軟熔的設(shè)備進行了簡要闡述,結(jié)合原系統(tǒng)的控制模型,分析了軟熔段溫度控制的基本原理和策略。本文結(jié)合軟熔設(shè)備工作機理和傳熱學基本原理對帶鋼加熱過程中熱量傳遞方式進行了分析,根據(jù)帶鋼在軟熔過程中的加熱特點,推導了熱量傳遞的計算方程,據(jù)此建立了軟熔過程的溫度數(shù)學模型。本文以原系統(tǒng)為基礎(chǔ),利用建立的數(shù)學模型,在LabVIEW環(huán)境下建立了一套帶鋼從軟熔入口到出口的溫度控制模型,對實際生產(chǎn)的過程控制進行模擬,求得出口溫度的變化曲線。在上述模型的基礎(chǔ)上,選取典型離線軋制數(shù)據(jù)進行仿真計算,并取該廠軋制數(shù)據(jù)離線計算溫度值與溫度實測值進行比較,驗證溫度預測模型的精度。
[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.
【學位授予單位】：安徽工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TQ153.13;TG335.12

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本文編號：1719850