针对热轧带钢16Mn轧后层流冷却过程,建立了温度与相变耦合计算的有限元模型,分析了冷却过程中带钢内应力的变化规律.结果表明.对于厚度为3.0mm的带钢经过层流冷却后沿带钢厚度方向温度趋于一致,沿宽度方向温差进一步增大.在不考虑初始应力的状态下,层流冷却结束后,带钢中部为18MPa的轧向拉应力,边部为-187MPa的轧向压应力.带钢边部存在的温度梯度和相变行为的差异是带钢在冷却过程中产生残余应力的主要原因,这种残余应力状态最终会导致带钢产生边浪.
参考文献
| [1] | 王国栋.均匀化冷却技术与板带材板形控制[J].上海金属,2007(06):1-5. |
| [2] | Hiroshi Yoshida .Analysis of residual stress in hot rolled H-beams[J].Transactions of the Iron and Steel Institute of Japan,1984,24:401-407. |
| [3] | Hiroshi Yoshida .Reduction of residual stress in hot rolled H-beams[J].Transactions of the Iron and Steel Institute of Japan,1984,24:471-477. |
| [4] | I.I. Boyadjiev;P.F. Thomson;Y.C. Lam .Prediction of the deflection and residual stress in controlled cooling of hot-rolled steel beams including load and arbitrary support Part II. Experimental validation and application[J].Journal of Materials Processing Technology,2004(2):268-275. |
| [5] | Heung Nam Han;Jae Kon Lee;Hong Joon Kim;Young-Sool Jin .A model for deformation, temperature and phase transformation behavior of steels on run-out table in hot strip mill[J].Journal of Materials Processing Technology,2002(1/3):216-225. |
| [6] | 蔡正,王国栋,刘相华,赵昆,袁建光.热轧带钢在冷却过程中的内应力解析[J].钢铁,2000(06):33-36,40. |
| [7] | 王晓东,何安瑞,杨荃,王仁忠,赵林,郭晓波.热轧带钢层流冷却过程中温度与相变耦合预测模型[J].北京科技大学学报,2006(10):964-968. |
| [8] | Harutoshi OGAI;Masahiro ITO;Ryu HIRAYAMA .Consistent Shape Prediction Simulator after Hot Rolling Mill[J].新日鉄技報,2003(379):43-48. |
| [9] | 孙克文,何安瑞,杨荃,张清东,赵林,郭晓波.热带钢轧机平坦度控制补偿策略[J].北京科技大学学报,2004(05):545-547,559. |
| [10] | 金兹伯格.高精度板带轧制理论和实践[M].北京:冶金工业出版社,2002:11-12. |
| [11] | Zhongqing Zhou;Peter F. Thomson;YeeCheong Lam .Numerical analysis of residual stress in hot-rolled steel strip on the run-out table[J].Journal of Materials Processing Technology,2003(1/3):184-197. |
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%