基于有限单元法,运用ANSYS商业软件包建立了7850铝合金直接水冷法半连续铸造过程的数值模型.根据现场铸造试验采集的温度数据,利用反算法确定了铸造过程的边界冷却条件.比较了数值模拟与试验结果的铸造温度场演化过程,以及稳定铸造阶段液穴深度的结果,证实数学模型与实验结果吻合较好.基于已证实合理的数值模型,研究了铸造过程刮水板的位置对铸锭温度场的影响.研究表明,该数值模型可以较好地模拟铝合金半连续铸造过程;刮水板会降低铸锭的冷却速度,导致铸锭表面温度出现回升的现象;刮水板的位置对铸锭冷却过程的温度场有显著影响.
参考文献
| [1] | NOROUZI Saeid;SHAMS AH;FARHANGI Hassan et al.The temperature range in the simulation of residual stress and hot tearing during investment casting[J].World Academy of Science Engineering and Technology,2009,58:283-289. |
| [2] | 刘兵,彭超群,王日初,王小锋,李婷婷.大飞机用铝合金的研究现状及展望[J].中国有色金属学报,2010(09):1705-1715. |
| [3] | W. Schneider .DC casting of aluminium alloys - State of the art and new challenges[J].Aluminium,2006(7/8):682-687. |
| [4] | J. Sengupta;S. L. Cockcroft;D. Maijer .The effect of water ejection and water incursion on the evolution of thermal field during the start-up phase of the direct chill casting process[J].Journal of Light Metals,2002(3):137-148. |
| [5] | J.-M. DREZET;M. RAPPAZ;B. CARRUPT .Experimental Investigation of Thermomechanical Effects during Direct Chill and Electromagnetic Casting of Aluminum Alloys[J].Metallurgical and Materials Transactions, B. Process metallurgy and materials processing science,1995(4):821-829. |
| [6] | Y. Xu;J. C. Wang;S. J. Guo;X. T. Li;G. X. Xue .Effects of water-restricted panel on the casting process of high strength aluminum alloy ingots[J].Journal of Materials Processing Technology,2011(1):78-83. |
| [7] | P.Barral;P.Quintela .A numerical algorithm for prediction of thermomechanical deformation during the casting of aluminium alloy ingots[J].Finite elements in analysis & design,2000(2):125-143. |
| [8] | 陶国林,潘复生,梁小平.大规格7050铝合金扁锭凝固过程中温度场和应力场的数值模拟[J].材料导报,2007(z2):405-407. |
| [9] | ADRIAN Kazunori Kuwana;SRINATH Viswanathan.Heat transfer boundary conditions for the numerical simulation of the DC casting process[M].Light Metals,TMS,2004:667-672. |
| [10] | 郭鹏,张兴国,郝海,金俊泽.AZ31镁合金圆锭连铸过程温度场的数值模拟[J].中国有色金属学报,2006(09):1570-1576. |
| [11] | 秦克,崔建忠,李建超.铸造铝合金圆锭温度场实验研究和数值模拟[J].塑性工程学报,2007(02):16-19. |
| [12] | DREZENT J M;BURGHARDT A;FJAER H G.Thermomechanical effects in DC casting of aluminium alloy:a numerical benchmark study[A].,2000:329-330:493-500. |
| [13] | Chunsheng Li;Brian G. Thomas .Thermomechanical Finite-Element Model of Shell Behavior in Continuous Casting of Steel[J].Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science,2004(6):1151-1172. |
| [14] | Drezet J.M.;Gremaud M. .Determination of Thermophysical Properties and Boundary Conditions of Direct Chill-Cast Aluminum Alloys Using Inverse Methods[J].Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science,2000(6):1627-1634. |
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%