| 加压成型工艺提高熔注炸药凝固冷却速率的机理研究 |
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| 引用本文： | 朱道理,周霖,张向荣,王端颖,王纪明.加压成型工艺提高熔注炸药凝固冷却速率的机理研究[J].北京理工大学学报,2018,38(8):797-801. |
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| 作者姓名： | 朱道理 周霖 张向荣 王端颖 王纪明 |
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| 作者单位： | 北京理工大学爆炸科学与技术国家重点实验室,北京,100081;甘肃银光化学工业集团有限公司,甘肃,白银730900 |
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| 基金项目： | 国家自然科学基金资助项目（11772060） |
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| 摘 要： | 为了揭示加压成型工艺提高装药凝固冷却速率的机理，通过1维导热实验并结合数值反演方法，求解装药与模具间的界面换热系数随凝固冷却时间及成型压的变化规律.研究结果表明，成型压力增加使得装药与模具间的界面换热系数增大，这是加压成型工艺提高装药凝固冷却速率的根本原因.
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| 关 键 词： | 熔注炸药 界面换热系数 成型压力 数值反演方法 |
| 收稿时间： | 2017/5/9 0:00:00 |
Mechanism of the Increase of Solidification and Cooling Rate of Melt-Casting Explosive by Increasing the Pressure of the Casting Vessel |
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| ZHU Dao-li,ZHOU Lin,ZHANG Xiang-rong,WANG Duan-ying and WANG Ji-ming.Mechanism of the Increase of Solidification and Cooling Rate of Melt-Casting Explosive by Increasing the Pressure of the Casting Vessel[J].Journal of Beijing Institute of Technology(Natural Science Edition),2018,38(8):797-801. |
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| Authors: | ZHU Dao-li ZHOU Lin ZHANG Xiang-rong WANG Duan-ying and WANG Ji-ming |
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| Institution: | 1. State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China;2. Yin Guang Chemical Industry Group Co, Ltd, Baiyin, Gansu 730900, China |
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| Abstract: | In order to reveal the mechanism of the increase of solidification and cooling rate of melt-casting explosive by increasing the pressure of the casting vessel, the interfacial heat transfer coefficient (IHTC) between the explosive charge and the mold was determined by the one-dimensional thermal conductivity experiment and the numerical inversion method, which was a function of both the time for solidification and cooling and the pressure of the casting vessel. The results show that the IHTC is increasing with the increase of the applied pressure, which is responsible for increasing the solidification and cooling rate of the explosive charges. |
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| Keywords: | melt-cast explosive interfacial heat transfer coefficient pressure of the casting vessel numerical inversion method |
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