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UCMW軋機正弦函數形單錐度工作輥邊降控制

Edge drop control using sinusoidai tapered work roll on a UCMW mill

  • 摘要: 以某冷軋寬帶鋼UCMW軋機為研究對象,采用有限元法分析了單錐度工作輥竄輥和單錐度工作輥端部輥形對邊降控制的影響.結果表明:端部輥形采用正弦函數時,隨工作輥端部錐段竄入帶鋼深度的增加,邊降呈拋物線關系減小;工作輥竄輥的邊降調控能力隨端部輥形有效段錐度的增加而增加.同一竄輥深度下,增大有效段錐度可以減小邊降;不改變有效段輥形而減小錐段長度可以減小邊降.此外,減小錐度和增大錐長可減小最大輥間壓力和輥間壓力不均勻度.

     

    Abstract: Taking the UCMW mill, a cold roiling mill, for an example, the finite element method (FEM) was employed to estimate the effects of tapered work roll shifting and the change in roll contour of the work roll end on edge drop control. The results show that the edge drop of cold rolled strips decreases with the increase in penetration length of the tapered part into strip edge when the work roll end is defined as a sinusoid curve, and the function of edge drop to work roll shifting is parabolic. The effect of work roll shifting on edge drop control increases with the increase in taper at the work roll end. Edge drop can be alleviated by increasing the taper of the work roll end at the same work roll shifting, whereas it can be also reduced when the roll contour at the work roll end does not change but the taper length decreases. In addition both the unevenness of pressure distribution and the maximum pressure between the work roll and the intermediate roll can be alleviated in terms of decreasing the taper and increasing the taper length.

     

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