張力微分方程研究-展示頁(yè)
2025-07-02 03:06本頁(yè)面
【正文】 。設(shè)在dt時(shí)間內(nèi)帶鋼在i機(jī)架的出口處位移量為U，在i+1機(jī)架入口處的位移量為u。W, w strip width which is before and after FGC point。 strip length before elastic deformation which is before and after FGC point。L1 39。圖2 機(jī)架間帶鋼規(guī)格變化Fig .2 Gauge change of strip between stands圖2中 T — 帶鋼所受總張力；L1，L2 — 彈性變形后變規(guī)格點(diǎn)前后帶鋼長(zhǎng)度；L1’，L2’— 彈性變形前變規(guī)格點(diǎn)前后帶鋼長(zhǎng)度；e1，e2 — 變規(guī)格點(diǎn)前后帶鋼的絕對(duì)伸長(zhǎng)；W, w — 變規(guī)格點(diǎn)前后帶鋼寬度；T total tension of strip。s law；(2) The deformation, stress on strip cross section is uniform before and after FGC；(3) There is no broadsiding when the plane deformation is in strip rolling process； i機(jī)架 i+1機(jī)架LiL2iL1iH h 圖1 動(dòng)態(tài)變規(guī)格軋制狀態(tài)Fig. 1 Rolling situation of FGCL2L1TVHTVhHhe2e1L239。以i機(jī)架出口到 i+1機(jī)架入口的帶鋼張力軋制狀態(tài)為研究對(duì)象，見(jiàn)圖2。即存在速度差，因此帶鋼處于張力軋制狀態(tài)。設(shè)變規(guī)格前后帶鋼的厚度為H、h，寬度為W、w，機(jī)架間長(zhǎng)度為。因此動(dòng)態(tài)變規(guī)格必須按照一定的規(guī)律進(jìn)行，為了研究不同動(dòng)態(tài)變規(guī)格控制模型的控制效果，通常需對(duì)冷連軋動(dòng)態(tài)變規(guī)格過(guò)程進(jìn)行動(dòng)態(tài)仿真研究，這需要建立起包括張力微分方程在內(nèi)的動(dòng)態(tài)變規(guī)格控制模型[8~11]。FGC is the specification change in rolling process of strip steel, namely in continuous rolling line nonstop conditions, through the dynamic adjustment of the roll gap, speed, tension and other parameters, realize the specifications of mutation on the adjacent two rolls of strip steel grade, thickness and width. Tandem cold rolling mill units realize FGC full continuous rolling, eliminates wear take, swing tail process, shorten the time of acceleration, deceleration process, which can improve the productivity, improve strip steel quality, especially the thickness deviation of head and tail, at the same time thickness get good control of the strip shape quality, and then reduce the strip cutting loss, improve the yield.動(dòng)態(tài)變規(guī)格復(fù)雜之處在于，在極短的時(shí)間內(nèi)由前一卷帶鋼的軋制規(guī)程切換到下一卷帶鋼的軋制規(guī)程。 Velocity differenceChinese library classification number： Literature identification code：A動(dòng)態(tài)變規(guī)格FGC（Flying Gauge Change），是在軋制過(guò)程中進(jìn)行帶鋼的規(guī)格變化，即在連軋機(jī)組不停機(jī)的條件下，通過(guò)對(duì)輥縫、速度、張力等參數(shù)的動(dòng)態(tài)調(diào)整，實(shí)現(xiàn)相鄰兩卷帶鋼的鋼種、厚度、寬度等規(guī)格的變換[1,2]。 FGC, Tension, Differential equations。分析了動(dòng)態(tài)變規(guī)格過(guò)程相關(guān)因素對(duì)張力變化的影響，證明了穩(wěn)態(tài)軋制條件下張力微分方程是動(dòng)態(tài)變規(guī)格張力微分方程的特例。修改稿 冷連軋動(dòng)態(tài)變規(guī)格張力微分方程Tandem cold rolling FGC tension differential equation摘要：介紹了冷連軋動(dòng)態(tài)變規(guī)格概念及軋制工藝特點(diǎn)。以冷連軋機(jī)組機(jī)架間帶鋼受張力拉
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