【摘要】：采用有限元軟件ABAQUS建立熱軋金屬彈塑性變形模型研究金屬橫向流動,為了降低模型計算成本,在模型中引入平穩(wěn)軋制過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程中多個因素對于金屬橫向流動的影響規(guī)律以及相應(yīng)金屬橫向流動對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)的改變對金屬橫向流動的影響可以忽略;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)力介于實際生產(chǎn)范圍內(nèi)的波動不會引起金屬橫向流動的變化以及進一步的軋件板形變化;金屬橫向流動隨壓下率變化,且使得壓下率增加時軋件對稱板形向中浪趨勢發(fā)展;金屬橫向流動隨對稱及非對稱板廓相似度變化,且金屬橫向流動的變化顯著削弱板廓相似度的改變對軋件板形的影響.為了滿足生產(chǎn)現(xiàn)場的在線控制,根據(jù)多組有限元模型計算結(jié)果建立快速金屬橫向流動非線性回歸模型,為軋件板形的準確調(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】： 北京科技大學機械工程學院;武漢鋼鐵股份有限公司;
【基金】：國家十二五科技支撐計劃資助項目(2015BAF30B01) 中央高�；究蒲袠I(yè)務(wù)費專項資金資助項目(FRF--BR-16--025A)
【分類號】：TG335.11

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