【摘要】：近年來,由于家用汽車、軍工、建筑、電器、造船、電子、航天等行業(yè)的飛速發(fā)展,板帶材的需求也隨之激增,這使得板帶生產(chǎn)工業(yè)飛速發(fā)展。與此同時,大部分板帶用戶由低端轉(zhuǎn)向高端,板帶行業(yè)的市場競爭也日趨激烈,對產(chǎn)品板形精度的要求也越來越苛刻,而平整作為板帶產(chǎn)品最接近成品的一道工序,對成品帶鋼的板形質(zhì)量起著舉足輕重的影響。首先,論文針對六輥平整機組非對稱軋制過程中存在的帶材跑偏、工作輥與中間輥及支撐輥輥型不對稱、來料斷面形狀分布不對稱等問題,將充分考慮到六輥平整機的設(shè)備與非對稱軋制的工藝特點,建立一套適合于六輥平整機非對稱軋制過程中基于機理的板形模型,并通過現(xiàn)場試驗驗證模型的精度;同時,為方便現(xiàn)場使用,將在上述理論研究成果的基礎(chǔ)上,編制出相應(yīng)的板形預(yù)報分析軟件,并利用該軟件模擬出非對稱過程中各個因素對板形的影響規(guī)律,為機組板形缺陷的治理奠定基礎(chǔ);隨后,將針對普通UCM機型的平整機組對肋浪、復(fù)合浪等高次非對稱復(fù)雜浪形控制效果不佳的問題,提出一套配置工作輥非對稱彎輥、中間輥非對稱彎輥、中間輥上下非對稱竄輥的AS-UCM新機型,建立了適合于AS-UCM新機型的平整機組的板形控制模型,并在此基礎(chǔ)上研究AS-UCM機型的平整機組單獨改變工作輥左右彎輥力差、中間輥左右彎輥力差以及中間輥竄動量差對負(fù)載輥縫的的影響,編制相應(yīng)的軟件;最后,為了更好地將科研理論服務(wù)于生產(chǎn),用實踐檢驗理論、驗證理論,將結(jié)合六輥平整機組的設(shè)備和工藝特點,把六輥平整機組非對稱軋制過程中的基于機理的板形模型應(yīng)用于國內(nèi)某1220六輥平整機組的生產(chǎn)實踐中,通過模擬計算出的板形與現(xiàn)場實測記錄的板形做對比,驗證模型的精度,并將基于機理的板形控制手段應(yīng)用到實際控制中,同時分別模擬新機型AS-UCM平整機和普通UCM平整機對非對稱高次復(fù)雜浪形的板形控制效果,通過對比得出新型AS-UCM平整機對非對稱高次復(fù)雜浪形的治理效果。
[Abstract]:In recent years, due to the rapid development of domestic automobile, military industry, construction, electrical appliances, shipbuilding, electronics, aerospace and other industries, the demand for strip materials has also increased sharply, which makes the plate and strip production industry develop rapidly. At the same time, most of the plate and strip users turn from the low end to the high end, and the market competition in the plate and strip industry is becoming increasingly fierce, and the requirements on the flatness accuracy of the products are becoming more and more stringent, and flatness is regarded as a process closest to the finished products of the plate and strip products. It plays an important role in the shape quality of finished strip. First of all, the paper aims at the problems of strip deviation, asymmetry of work roll, middle roll and support roll, asymmetric distribution of feed section shape and so on in the process of asymmetric rolling of six-high leveling mill. Taking fully into account the equipment of six-high leveling machine and the technological characteristics of asymmetric rolling, a set of shape model based on mechanism is established, and the accuracy of the model is verified by field test, at the same time, In order to facilitate the field use, the corresponding software for shape prediction and analysis will be compiled on the basis of the above theoretical research results, and the influence of various factors in the asymmetric process on the shape of the plate will be simulated by the software. It lays the foundation for the treatment of the shape defect of the unit, and then, aiming at the problem that the unsymmetrical complex wave shape control effect of the common UCM type leveling machine is not good, a set of unsymmetrical bending rollers with work roll is put forward for the problems of the unsymmetrical complex wave shape control effect such as the compound wave and the equal height of the complex wave. A new AS-UCM machine for asymmetric bending of intermediate roll and asymmetrical channeling of middle roller up and down is established. The flatness control model of leveling machine suitable for AS-UCM new type is established. On this basis, the influence of the work roll force difference, the middle roll left and right bending roll force difference and the intermediate roll channeling momentum difference on the load roll gap of the AS-UCM mill is studied, and the corresponding software is compiled. In order to better serve the scientific research theory in production, the theory will be verified by practice, which will combine the equipment and process characteristics of the six-high leveling unit. This paper applies the machine-based flatness model in the asymmetric rolling process of the six-high leveling mill to the production practice of a 1220 six-high leveling mill in China. The accuracy of the model is verified by comparing the calculated shape with the measured shape recorded on the spot. The shape control method based on mechanism is applied to the practical control, and the shape control effect of the new type AS-UCM leveling machine and the common UCM leveling machine on the asymmetric high order complex wave shape is simulated, respectively. Through comparison, the treatment effect of the new AS-UCM leveling machine on asymmetric high order complex wave is obtained.
【學(xué)位授予單位】：燕山大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TG335.5

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