锻压技术

热冲压模具冷却系统流速均匀优化研究

英文标题：Research on flow rate uniform optimization of hot stamping die cooling system

作者：刘迪辉万雨娴张文甲

单位：湖南大学

分类号：TH16;TG76

出版年,卷(期):页码：2017,42(12):104-108

摘要：

为优化热冲压模具的冷却系统，减小各型面水管之间的流速差异，提高成形件的产品质量，针对大流速型面水管，提出了将该水管的连接水管沿两个不同方向进行偏置以降低流速的方法。以各型面水管的流速标准差为质量指标，设计正交试验，得到最佳偏置距离。由优化后的冷却系统流场及模面温度分析可知，两种偏置下各管道流速均匀性分别提高了86.2%和77.6%，模面最高温度分别下降了18.5和11.6 ℃，模面平均温度分别下降了13.0和5.3 ℃。搭建了相应的试验系统进行流速测试，试验结果和仿真吻合。研究表明，该方法能有效改善模具冷却水管流速不均，提高模面温度均匀性。

For the water pipes with large flow rate profile, it was proposed that biasing the connecting pipe of water pipe in two different directions to reduce the flow rate in order to optimize the cooling system of hot stamping die,deduce the difference of flow rate among various profiles of water pipes and improue the forming quality of forming parts. Then, taking the standard deviation of flow rate of various profiles of water pipes as quality index, the orthogonal test was designed to get the best offset distance. After the optimization, the flow field analysis and die surface temperature analysis of the cooling system were carried out, and under two kinds of bias, the velocity uniformity of each pipe increased by 86.2% and 77.6% respectively, the maximum temperature of die surface decreased by 18.5 ℃ and 11.6 ℃ respectively, and the average temperature of die surface decreases by 13.0 ℃ and 5.3 ℃ respectively. Furthermore, corresponding experimental system was set up for flow rate test, and the experimental results were found to be in good agreement with the simulated results. The research results show that the method can effectively improve the uneven flow rate of the die cooling water pipe and the temperature uniformity of die surface.

基金项目：

国家自然科学基金资助项目（51405149）；湖南省自然科学基金资助项目（201631390158）

作者简介：刘迪辉（1975-），男，博士，副教授 E-mail：dihuiliu@163.com 通讯作者：万雨娴（1993-），女，硕士研究生 E-mail：1404118250@qq.com

参考文献：

［1］贺斌，李显达，盈亮,等.热冲压模具随形冷却水道优化设计[J].吉林大学学报：工学版，2016,46（6）：1974-1980.

He B, Li X D, Ying L, et al. Optimal design of hot stamping tools with conformal cooling channels[J].Journal of Jilin University: Engineering and Technology Edition, 2016, 46(6):1974-1980.

［2］祁涛，李建东，张欢,等.超高强钢热成形模具温度场分析及冷却管道设计[J].热加工工艺，2014,43（21）：138-141.

Qi T, Li J D, Zhang H, et al. Temperature field analysis and cooling pipeline design of hot forming die for ultra high strength steel[J].Hot Working Technology，2014,43(21)：138-141.

［3］陈俊，彭成允，蔡丽娟，等.基于Abaqus的冷却系统参数对模具冷却性能的影响研究[J].热加工工艺，2016,45（15）：151-155.

Chen J，Peng C Y, Cai L J, et al. Influence of cooling system structure parameters on die cooling performance based on Abaqus[J].Hot Working Technology,2016,45(15):151-155.

［4］何育军，谢延敏，田银,等.热冲压成形数值仿真及模具冷却系统参数研究[J].锻压技术，2015, 40（11）：148-154.

He Y J, Xie Y M, Tian Y, et al. Numerical simulation of hot stamping and parameter study of die cooling system[J].Forging & Stamping Technology, 2015, 40(11):148-154.

［5］张渝，丁波，马军伟.基于正交试验的热冲压冷却过程数值模拟分析[J].锻压技术，2015，40（3）:105-109.

Zhang Y, Ding B, Ma J W. Numerical simulation of hot stamping cooling process based on orthogonal experiment[J]. Forging & Stamping Technology, 2015, 40(3):105-109.

［6］贺斌，邓泽涵，张万鑫,等.热冲压模具冷却水道FEM-CFD耦合优化研究[J].热加工工艺，2014,43（3）:1-4.

He B, Deng Z H, Zhang W X, et al .Optimization of cooling channels for hot stamping die based on FEM-CFD coupled method [J]. Hot Working Technology, 2014, 43(3):1-4.

［7］Hoffmann H, So H, Steinbeiss H. Design of hot stamping tools with cooling system[J]. CIRP Annals - Manufacturing Technology, 2007, 56(1):269-272.

［8］Geiger M, Merklein M, Hoff C. Basic investigations on the hot stamping steel 22MnB5[J]. Advanced Materials Research, 2005, (6-8):795-804.

［9］Lim W S, Choi H S, Ahn S Y, et al. Cooling channel design of hot stamping tools for uniform high-strength components in hot stamping process [J]. International Journal of Advanced Manufacturing Technology, 2014, 70(5-8):1189-1203.

［10］Liu H, Lei C, Xing Z. Cooling system of hot stamping of quenchable steel BR1500HS: optimization and manufacturing methods[J]. International Journal of Advanced Manufacturing Technology, 2013, 69(1-4):211-223.

［11］赵海明.热成形模具冷却系统数值模拟分析[D].长春：吉林大学，2013.

Zhao H M. Numerical Simulation of Cooling System of Hot Stamping Die[D].Changchun: Jilin University,2013.

服务与反馈：

【文章下载】【加入收藏】