Work roll hot grinding for non-oriented silicon steel hot rolling
-
摘要: 为了解决正常生产结构条件下,无取向硅钢热连轧工作辊磨削辊形受热辊形影响难以获得工艺制度期望的初始辊形问题,结合无取向硅钢热轧生产过程,采用二维有限差分法建立了工作辊轧制过程中的工作辊温度场计算数学模型,使用有限元软件ANSYS建立了工作辊下机后空冷和喷淋冷却混和工艺条件下温度场模型,开展了无取向硅钢热轧工作辊一个完整使用周期内的温度场和热辊形仿真研究,提出了无取向硅钢工作辊热磨辊数学模型和热磨辊工艺制度,并投入生产应用.相同生产工艺条件下,1700热连轧机无取向硅钢轧制应用热磨模型和热磨工艺制度后,产品的凸度和楔形双达标率由67.39%提高到74.57%的明显生产实绩.Abstract: The work roll grinding contour of non-oriented silicon steel hot rolling is dependent on the work roll thermal contour heavily which will lead to an unexpected initial work roll contour under normal roiling condition. To resolve this problem, considering the condition of non-oriented silicon steel rolling, a work roll temperature field model during rolling was constructed by using the 2-D finite difference method and a work roll temperature field model after rolling under air and spray mixed cooling condition was developed by using the finite element software ANSYS. Based on these models, the work roll temperature field and thermal contour through the whole non-oriented silicon steel rolling process were researched numerically, and a hot grinding mathematical model and its schedule were proposed and applied in industrial production. Under the same condition, after applying the new work roll hot grinding mathematical model and its schedule to non-oriented silicon steel strip rolling of 1700 mm hot strip mills, the qualification ratio of crown and wedge increased from 67.39% to 74.57%.
-
Keywords:
- hot rolling /
- temperature field /
- thermal contour /
- finite difference method /
- finite element method
-
计量
- 文章访问数: 331
- HTML全文浏览量: 48
- PDF下载量: 13
下载:
