本文關(guān)鍵詞： 拉彎矯直 帶鋼 工藝模型 速度模型 顯微組織 力學(xué)性能　出處：《太原科技大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：拉彎矯直是帶鋼生產(chǎn)線上矯正板型、破鱗、提高質(zhì)量的經(jīng)典金屬成型技術(shù),其工作原理是將帶張力的板帶材同時(shí)進(jìn)行彎曲而產(chǎn)生塑性延伸,消除板帶材的形狀缺陷、應(yīng)力缺陷以及質(zhì)量缺陷,獲得各項(xiàng)性能優(yōu)異的產(chǎn)品,因此拉彎矯直機(jī)在帶鋼生產(chǎn)線上得到了廣泛的應(yīng)用。隨著制造業(yè)的迅速發(fā)展,國(guó)內(nèi)本身起步較晚的拉矯技術(shù)研究與國(guó)際領(lǐng)先技術(shù)有了較大的差距,粗放的技術(shù)偏多,精尖技術(shù)偏少;舶來(lái)技術(shù)偏多,自主技術(shù)偏少,所以在拉彎矯直領(lǐng)域的研究中尚需嚴(yán)謹(jǐn)系統(tǒng)的理論模型以及更多的實(shí)驗(yàn)研究,以便提出更深層次的改善要求,使得這個(gè)優(yōu)秀的技術(shù)能夠獲得更加高水平的應(yīng)用。本文以太原科技大學(xué)450mm拉彎矯直試驗(yàn)臺(tái)為基礎(chǔ),在深入探討拉伸彎曲矯直原理的基礎(chǔ)上,結(jié)合控制系統(tǒng)工藝模型,建立了完善的拉彎矯直工藝模型,設(shè)計(jì)了不同的拉矯工藝路線,進(jìn)行了帶鋼的拉彎矯直實(shí)驗(yàn),研究了不同拉彎矯直工藝對(duì)矯后帶鋼性能的影響規(guī)律。本文的主要內(nèi)容和研究成果如下:1.精確確定了中性層偏移量、張力、壓彎量和延伸率的計(jì)算方法,明確了工藝參數(shù)之間的相關(guān)關(guān)系,建立了完善可靠的拉彎矯直工藝模型,為工藝參數(shù)的設(shè)定與控制提供了基本的支持。2.建立了帶鋼拉彎矯直速度控制模型,完善了拉彎矯直模型,對(duì)拉彎矯直機(jī)組設(shè)備控制系統(tǒng)進(jìn)行了調(diào)試,確保了機(jī)組的穩(wěn)定運(yùn)轉(zhuǎn)和拉矯延伸率的準(zhǔn)確控制,完善了機(jī)組控制系統(tǒng)。3.進(jìn)行了拉彎矯直材料性能實(shí)驗(yàn)研究,研究了不同拉矯工藝參數(shù)對(duì)帶鋼組織和性能的影響,得到了帶鋼性能隨工藝參數(shù)變化的規(guī)律,確定了最優(yōu)參數(shù)的范圍,為改善材料性能的拉矯工藝設(shè)置提供了參考。由上可知,本論文的研究結(jié)果對(duì)豐富拉伸彎曲矯直理論、促進(jìn)拉伸彎曲矯直技術(shù)改善帶鋼組織性能等方面起到了積極有益的作用,也表明拉伸彎曲矯直理論尚有很多亟待完善的地方,有必要繼續(xù)探討。
[Abstract]:Tensile bending and straightening is a classical metal forming technology for correcting plate shape, scale breaking and improving quality in strip production line. Its working principle is to bend the strip with tension at the same time and produce plastic extension. Eliminating the shape defect, stress defect and quality defect of the strip, and obtaining the products with excellent properties, the tension straightener has been widely used in the strip production line. With the rapid development of the manufacturing industry. There is a big gap between the domestic and the international leading technology, the extensive technology is more, the fine point technology is less; More imported technology and less independent technology, so in the field of tension and bending straightening research, there is still a need for rigorous and systematic theoretical model and more experimental research, in order to put forward a deeper level of improvement requirements. So that this excellent technology can be applied to a higher level. This paper is based on the 450 mm tensile straightening test bench of Taiyuan University of Science and Technology, on the basis of deeply discussing the principle of tensile bending straightening. Combined with the process model of the control system, a perfect drawing and bending straightening process model was established, different drawing and straightening process routes were designed, and the straining and straightening experiments of strip steel were carried out. The effects of different tension and straightening processes on the properties of post-straightening strip are studied. The main contents and results of this paper are as follows: 1. The calculation methods of neutral layer offset, tension, bending and elongation are determined accurately. The correlation between process parameters is clarified, and a perfect and reliable straightening process model is established, which provides the basic support for the setting and control of process parameters. 2. The speed control model of strip bending straightening is established. The model of tension and bending straightening is improved and the control system of tension and bending straightener is debugged to ensure the stable operation of the unit and the accurate control of the elongation of tension and straightening. The experimental study of tensile and bending straightening material properties was carried out, and the influence of different drawing and straightening process parameters on the structure and properties of strip steel was studied, and the variation of strip steel properties with process parameters was obtained. The range of the optimal parameters is determined, which provides a reference for improving the setting of tensile straightening technology. From the above, we can know that the research results of this paper are rich in the theory of tensile bending straightening. It has played a positive and beneficial role in improving the microstructure and properties of strip steel by means of tensile bending straightening technology. It also shows that the theory of tensile bending straightening is still in need of improvement, and it is necessary to continue to study it.
【學(xué)位授予單位】：太原科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TG335.5

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