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| 基于多维度物理参数影响的超高强钢热成形冷却流场仿真分析 |
| Simulation Analysis of Cooling Flow Field in Hot Forming of Ultra High Strength Steel Based on Multi Dimensional Physical Parameters |
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| DOI：10.3969/j.issn.1674-6457.2022.05.004 |
| 中文关键词: 热成形模具 冷却流场 有限元模拟分析 热属性 模型优化 板材淬火工艺 |
| 英文关键词: hot forming die cooling flow field finite element simulation analysis thermal properties model optimization plate quenching process |
| 基金项目:中央引导地方科技发展资金(基础研究项目)(206Z1803G) |
| Author Name | Affiliation | | ZHANG Quan-da | Beijing National Innovation Institute of Lightweight Ltd., Beijing 101407, China | | LI Hui-yu | Beijing National Innovation Institute of Lightweight Ltd., Beijing 101407, China | | SUN Fu-zhen | Beijing National Innovation Institute of Lightweight Ltd., Beijing 101407, China | | JI Ri-ge-le | Beijing National Innovation Institute of Lightweight Ltd., Beijing 101407, China | | LIU Zi-zhi | Beijing National Innovation Institute of Lightweight Ltd., Beijing 101407, China |
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| 中文摘要: |
| 目的 研究关键参数对超高强钢热成形模内淬火效果的影响规律，合理选择模具材料和冷却流场空间结构，达到冷却淬火后材料中条状马氏体含量最大的目的。方法 利用流体仿真软件Star–ccm+对超高强钢热成形模具冷却流场进行有限元模拟分析，采用7种不同热导率的热成形模具材料和直径为15、20、25、30、35 mm的冷却管道管径，研究模具热属性及冷却管道分布的结构属性对板材淬火效果的影响规律。结果 板材H13冷却效果最好，达到淬火标定冷却温度用时更短，热成形工艺冷却效率明显提升。冷却管道管径为35 mm的模具冷却效果最好，达到温度峰值时间更短，散热更快，为冷却流场空间结构提供优化参考。结论 结合理论分析可知，模拟结果的热传递规律合理，仿真模具对超高强钢热成形模内淬火工艺的制定有一定的指导意义。 |
| 英文摘要: |
| This work aims to master the influence law of key parameters on the quenching effect in the hot forming die of ultra-high strength steel, reasonably select the die material and the spatial structure of cooling flow field, so as to maximize the content of strip martensite in the material after cooling and quenching. The cooling flow field of ultra-high strength steel hot forming die is simulated and analyzed by using the fluid simulation software Star-ccm+. Seven hot forming die materials with different thermal conductivity and cooling pipe diameters of 15, 20, 25, 30 and 35 mm are used to study the influence of die thermal properties and structural properties of cooling pipe distribution on plate quenching effect. The cooling effect of sheet H13 is the best, the time to reach the quenching rated cooling temperature is shorter, and the cooling efficiency of hot forming process is significantly improved. The mold with 35 mm cooling pipe diameter has the best cooling effect, shorter time to reach the temperature peak and faster heat dissipation, which provides an optimization reference for the spatial structure of cooling flow field. Combined with the theoretical analysis, the heat transfer law of the simulation results is reasonable, and the simulation die has a certain guiding significance for the formulation of the quenching process in the hot forming die of ultra-high strength steel. |
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