【摘要】：采用有限元軟件ABAQUS建立熱軋金屬?gòu)椝苄宰冃文Ｐ脱芯拷饘贆M向流動(dòng),為了降低模型計(jì)算成本,在模型中引入平穩(wěn)軋制過(guò)程中軋件幾何模型端面縱向位移沿橫向均布的假設(shè).利用此模型仿真研究軋制過(guò)程中多個(gè)因素對(duì)于金屬橫向流動(dòng)的影響規(guī)律以及相應(yīng)金屬橫向流動(dòng)對(duì)軋件板形造成的影響.研究結(jié)果表明,接觸界面摩擦狀態(tài)的改變對(duì)金屬橫向流動(dòng)的影響可以忽略;寬帶鋼熱連軋生產(chǎn)中,在比例凸度不變的情況下,寬度的變化和平均前、后張應(yīng)力介于實(shí)際生產(chǎn)范圍內(nèi)的波動(dòng)不會(huì)引起金屬橫向流動(dòng)的變化以及進(jìn)一步的軋件板形變化;金屬橫向流動(dòng)隨壓下率變化,且使得壓下率增加時(shí)軋件對(duì)稱板形向中浪趨勢(shì)發(fā)展;金屬橫向流動(dòng)隨對(duì)稱及非對(duì)稱板廓相似度變化,且金屬橫向流動(dòng)的變化顯著削弱板廓相似度的改變對(duì)軋件板形的影響.為了滿足生產(chǎn)現(xiàn)場(chǎng)的在線控制,根據(jù)多組有限元模型計(jì)算結(jié)果建立快速金屬橫向流動(dòng)非線性回歸模型,為軋件板形的準(zhǔn)確調(diào)控奠定基礎(chǔ).
[Abstract]:The elastic-plastic deformation model of hot rolled metal is established by finite element software ABAQUS to study the transverse flow of metal. In order to reduce the calculation cost of the model, the assumption that the longitudinal displacement of the end face of the geometric model of the rolled piece is uniformly distributed along the transverse direction is introduced into the model. This model is used to simulate the influence of many factors on the transverse flow of metal and the influence of the transverse flow of metal on the shape of the rolled piece. The results show that the influence of the change of contact interface friction state on the transverse flow of metal can be ignored, and the fluctuation of post-tensile stress within the actual production range will not cause the change of transverse flow of metal and the further change of strip shape in the production of broadband steel when the proportional convexity is constant, before the change of width and average, the fluctuation of post-tensile stress in the actual production range will not cause the change of transverse flow of metal and the further change of shape of rolled piece. The transverse flow of metal changes with the reduction rate, and makes the symmetrical strip shape of the rolled piece develop to the middle wave when the reduction rate increases, and the transverse flow of metal changes with the similarity of symmetrical and asymmetric plate profile, and the change of metal transverse flow significantly weakens the influence of the change of plate profile similarity on the shape of rolled piece. In order to meet the on-line control of production site, a nonlinear regression model of rapid metal transverse flow is established according to the calculation results of multi-group finite element model, which lays a foundation for the accurate regulation and control of strip shape.
【作者單位】： 北京科技大學(xué)機(jī)械工程學(xué)院;武漢鋼鐵股份有限公司;
【基金】：國(guó)家十二五科技支撐計(jì)劃資助項(xiàng)目(2015BAF30B01) 中央高校基本科研業(yè)務(wù)費(fèi)專項(xiàng)資金資助項(xiàng)目(FRF--BR-16--025A)
【分類號(hào)】：TG335.11

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