针对目前MPM限动芯棒机组连轧过程由于轧制负荷和轧辊速度不匹配容易引起的轧机效率低、钢管金属堆积、拉裂、拉凹等问题,采用相对等负荷的设计方法建立数值模拟方案,研究关键的可调参数（辊缝值和轧制速度）对连轧力及金属堆拉的影响。研究结果表明：适当增大受轧制力过大的轧辊辊缝值,可以减少其轧制力,反之,可以增大轧制力,调整产生堆拉现象的对应轧辊的轧制速度,解决金属堆拉的问题。通过现场试验数据验证了有限元模型的正确性。根据优化后获得的参数,建立模型并对轧制力进行了模拟分析比较。
Aiming at the common problems of MPM unit,such as low efficiency of rolling mill,the steel pipi metal accumulation and ripping caused by mismatch between the rolling load and roll speed,a numerical simulation project was developed by using the relative equality load technology.The effect of main adjustable parameters on the rolling force and metal accumulation was investigated.The results show that: the rolling force can be reduced by increasing the value of the roll gap appropriately as the rolling force too large,and vice versa.Pile of pull problem can also be solved through adjusting the rolling speed.The validity of the finite element model is verified by using field experimental data.According to the parameters obtained by optimization,a model was built to simulate the distribution of the rolling force.
参考文献
| [1] | 杜民献.二连轧常见工艺问题成因分析及解决办法[J].装备制造技术,2009(07):158-160,173. |
| [2] | 胡建平;黄波.MSC.MARC在PC轧机轴向力计算中的应用[J].钢铁技术,2003(02):27. |
| [3] | 洪慧平,赵志毅,康永林,余勇,周晓岚,潘峰.T91钢热连轧管过程力学参数的有限元分析[J].特殊钢,2006(05):3-5. |
| [4] | 尹元德,李胜祗.无缝钢管连轧技术研究进展[J].安徽工业大学学报（自然科学版）,2005(03):229-233. |
| [5] | LI Sheng-zhi;XU Jie;YIN Yuan-de et al.Mechanism of In ternal Surface Crack Formation of Seamless Modified 9Cr-1Mo Steel Tube Rolled by Mandrel Mill and Its Application[J].Journal of Iron and Steel Research International,2007,14(05):273. |
| [6] | 章传国,刘靖,韩静涛.无缝钢管连轧过程有限元数值模拟研究[J].塑性工程学报,2005(z1):155-158. |
| [7] | K. Baines .Lead as a model material to simulate mandrel rolling of hot steel tube[J].Journal of Materials Processing Technology,2001(1/3):422-428. |
| [8] | Yamamoto S;Yamada K;Hamauzu S et al.Effect of Roll-Groove Profile on Tube Deformation in Single Stand Mandrel Rolling[J].Journal of the Japan Society for Technology of Plasticity,1999,466(40):1076. |
| [9] | Cavaliere M A;Goldschmit M B;Dvorkin E N .Finite Element Analysis of Steel Rolling Processes[J].Computers & Structures,2001,79(22/25):2075. |
| [10] | MSC Software Corporation.MSC.MARC 2005,User Manual[M].[s.l.]:MSC Software Corporation,2005 |
| [11] | HONG H P;KANG Y L;FENG C T .Three-Dimensional Thermo-Mechanical Coupled FEM Simulation for Hot Contin-uous Rolling of Large Diameter Mandrel Bar[J].Materials Science and Technology,2003,19(suppl):228. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%