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Accu-Roll軋管機熱軋奧氏體無縫鋼管的數值模擬與工藝參數優化

Finite element simulation and processing parameter optimization on hot-rolled austenitic seamless steel tubes by Accu-Roll pipe mill

  • 摘要: 根據鋼管斜軋過程的變形特點,利用ANSYS/LS-DYNA有限元軟件對Accu-Roll軋管機熱軋奧氏體無縫鋼管的軋制過程進行有限元數值模擬.通過模擬仿真計算,分析無縫鋼管截面的變形特點及軋制力和應力應變分布的變化規律,通過將模擬結果與實測數據進行比較,驗證了模型的可靠性.模擬結果表明,在軋制過程中孔型形狀不當易造成雙鼓形,整個軋制過程中最大軋制應力為403.4 MPa,最大等效應力值為231.8 MPa.

     

    Abstract: Based on the deformation characteristics of steel tubes in the process of skew rolling, finite element software ANSYS/LS-DYNA was applied to simulate the rolling process of hot-rolled austenitic seamless steel tubes by Accu-Roll pipe mill. The deformation characteristics of tube section and the variation law of rolling force and strain-stress were obtained by finite element analysis. The simulation results were compared with the measured data, and the model was proved to be reliable. The results of simulation show that the unfitted shape of pass can bring out the overlap; during the rolling process, the maximum rolling stress is 403. 4 MPa, and the maximum equivalent stress is 231. 8 MPa.

     

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