本文關(guān)鍵詞： 轉(zhuǎn)轂式矯直 電鎳導電棒 矯直參數(shù) 矯直質(zhì)量 有限元模擬　出處：《昆明理工大學》2017年碩士論文　論文類型：學位論文

【摘要】：在國民經(jīng)濟快速發(fā)展的今天,鎳這種多功能型的金屬材料被越來越多的行業(yè)所應(yīng)用。目前世界上生產(chǎn)鎳以電解精煉方法為主,電流經(jīng)電解槽流向?qū)щ姲?經(jīng)吊耳流向種板。但是導電棒在使用過程中常因為受載、敲打等原因發(fā)生彎曲變形。使用彎曲變形的導電棒會影響電鎳的電解效率和制作始極片的自動化程度,嚴重的會發(fā)生安全事故,所以導電棒再次使用前必須進行矯直。國內(nèi)現(xiàn)在存在管棒材專用的矯直機,但是因為矯直精度低、矯直質(zhì)量不穩(wěn)定、存在矯直盲區(qū)等原因沒被大部分企業(yè)認可接受。轉(zhuǎn)轂式斜輥矯直機是一種新型的矯直裝置,可以用于矯直導電棒,但是因為結(jié)構(gòu)參數(shù)設(shè)置、工藝參數(shù)調(diào)節(jié)等原因使轉(zhuǎn)轂式斜輥矯直機不能很好滿足生產(chǎn)實際需要。本課題以轉(zhuǎn)轂式斜輥矯直機為研究對象,利用單旋轉(zhuǎn)轂式矯直機隨機對50根電鎳導電棒進行實驗并測量其矯直前后的平直度,從而發(fā)現(xiàn)該種矯直機的弊端并在此基礎(chǔ)上進行設(shè)計和改進。根據(jù)金屬彈塑性彎曲理論,分析了強化金屬材料管材在彎曲時的塑性區(qū)變形分布規(guī)律,并建立了管材彎曲時的曲率比方程和彎矩比大小;推導出管材彎曲時的能量比和精度范圍。在單旋轉(zhuǎn)轂式矯直機的工作原理基礎(chǔ)上,得到雙旋轉(zhuǎn)轂矯直機的簡化力學模型和壓彎撓度,分析了其矯直優(yōu)點,設(shè)計了輥子排布方式,計算了輥距、輥形等機構(gòu)參數(shù)和矯直速度、輥子斜角等工藝參數(shù)。應(yīng)用有限元分析軟件Deform 3D進行模擬仿真,對導電棒從咬入到穩(wěn)定矯直再到順利拋出的矯直過程進行動態(tài)觀察,對矯直過程中導電棒的等效應(yīng)力分布和矯后導電棒平直度進行了著重分析研究。采用單一變量法分別研究了轉(zhuǎn)轂的旋向、拉料速度差以及螺旋導程對矯直效果的影響。本文將實驗分析和有限元模擬結(jié)合起來對導電棒的矯直過程進行研究,結(jié)合單旋轉(zhuǎn)轂式矯直機的不足,設(shè)計出雙旋轉(zhuǎn)轂式矯直機,并研究特定的矯直參數(shù)對矯直效果的影響,為雙旋轉(zhuǎn)轂式矯直機的設(shè)計和實際矯直提供了理論依據(jù),具有一定的實用價值和指導意義。
[Abstract]:With the rapid development of the national economy, nickel, a multifunctional metal material, has been used in more and more industries. At present, nickel is produced mainly by electrolytic refining, and the current flows to the conducting rod through the electrolytic cell. However, during the use of conductive rods, bending deformation often occurs due to load, beating and other reasons. The use of bending deformed conductive rods will affect the electrolysis efficiency of nickel electrolysis and the automation degree of the initial electrode. Serious safety accidents will occur, so the conductive rod must be straightened before re-use. There is a special straightener for tube bar in China now, but because of the low straightening accuracy, the straightening quality is unstable. The reason of straightening blind area is not accepted by most enterprises. The hub inclined roll straightener is a new type of straightening device, which can be used to straighten the conductive rod, but because of the structure parameter setting. The adjustment of process parameters makes the hub tilting roller straightening machine can not meet the actual production needs well. This topic takes the hub type inclined roll straightening machine as the research object. A single rotating hub straightener was used to test 50 electric nickel conducting rods at random and the straightness before and after straightening was measured. Based on the theory of metal elastic-plastic bending, the deformation distribution law of plastic zone of reinforced metal pipe in bending is analyzed. The curvature ratio equation and bending moment ratio are established. Based on the working principle of single rotating hub straightener, the simplified mechanical model and bending deflection of double rotating hub straightener are obtained, and the advantages of straightening are analyzed. The arrangement of roller is designed, and the parameters of roller spacing, roll shape, straightening speed and roll angle are calculated. The finite element analysis software Deform 3D is used to simulate and simulate. The dynamic observation was carried out on the straightening process of conducting rod from biting in to stabilizing straightening and then to throwing out smoothly. The equivalent stress distribution of conducting rod and the straightness of conducting rod after straightening are studied emphatically. The rotation direction of the hub is studied by single variable method. In this paper, the experimental analysis and finite element simulation are combined to study the straightening process of the conductive rod, combined with the shortcomings of the single rotating hub straightener. The double rotating hub straightener is designed, and the influence of certain straightening parameters on the straightening effect is studied, which provides a theoretical basis for the design and practice of the double rotating hub straightener. It has certain practical value and guiding significance.
【學位授予單位】：昆明理工大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TG333.23

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