在圆-椭圆-圆孔型中轧制合金钢棒材时,提出了接触边界临界点的概念,并且推导出了临界点的解和新的等效接触断面面积公式,给出了计算平均轧辊半径的新模型.为了验证新模型,进行了棒材轧制试验并且利用三维刚塑性有限元法对轧制过程进行了模拟.把不同模型得到的理论结果与实验值和模拟值作了比较后证明新模型具有很高的精度,因此可以作为轧制理论和实践的重要参考.
参考文献
[1] | Z Wusatowski;R Wusatowski .Pass Design of Profiled Bars[J].Prace Imet,1952,4:273. |
[2] | Z Wusatowski.Fundamentals of Rolling[M].London:Pergamon Press,1969:107. |
[3] | Y Saito;Y Takahashi;M Moriga;K.Kato .A New Methods of Calculating Mean Roll Radius[J].Journal of the Japan Society for Technology of Plasticity,1983,24:1070. |
[4] | Youngseog Lee .A New Analytical Model for Calculating Mean Roll Radius[J].ISIJ International,2001,41:1414-1416. |
[5] | Lee Y.;Choi S. .New approach for the prediction of stress free surface profile of a workpiece in rod rolling[J].ISIJ International,2000(6):624-626. |
[6] | Y Lee;H J Kim;S M Hwang.Analytical model for the predictionof mean effective strain in rod rolling process[J].Journal of Materials Processing Technology,2001:114. |
[7] | T Shinokura;K A Takai.A new method for calculating spread in rod rolling[A].ASM.Cineinati,1983:175-188. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%