| 高温合金雾化熔滴的热传输与凝固行为 |
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| 引用本文： | 孙剑飞,沈军,李振宇,贾均,李庆春. 高温合金雾化熔滴的热传输与凝固行为[J]. 粉末冶金技术, 2000, 18(2): 92-97 |
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| 作者姓名： | 孙剑飞 沈军 李振宇 贾均 李庆春 |
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| 作者单位： | 哈尔滨工业大学金属精密热加工国家级重点实验室, 哈尔滨 150001 |
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| 摘 要： | 采用雾化过程热传输数学模型计算了高温合金雾化熔滴飞行速度、对流换热系数、温度分布、固相分数和冷却速度随熔滴尺寸和飞行距离的变化,给出了其变化趋势及引起变化的原因,并讨论了雾化压力和合金过热度对上述参数的影响
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| 关 键 词： | 喷射成形 高温合金 热传输 数学模型 |
| 收稿时间： | 1999-08-09 |
HEAT TRANSFER AND SOLIDIFICATION BEHAVIOR OF SUPERALLOY DROPLETS DURING SPRAY FORMING |
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| Sun Jianfei,Shen Jun,Li Zhenyu,Jia Jun,Li Qingchun. HEAT TRANSFER AND SOLIDIFICATION BEHAVIOR OF SUPERALLOY DROPLETS DURING SPRAY FORMING[J]. Powder Metallurgy Technology, 2000, 18(2): 92-97 |
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| Authors: | Sun Jianfei Shen Jun Li Zhenyu Jia Jun Li Qingchun |
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| Affiliation: | National Key Laboratory of Metal Precision Hot Processing, Harbin Institute of Technology, Harbin 150001 |
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| Abstract: | A mathematical model was modified to calculate the velocity, heat transfer coefficient, temperature, solid fraction and cooling rate of atomizin droplets with various droplet size and flight distance for a superalloy, The changing trend as well as the mechanism were described and analyzed. The effects of atomizing pressure and superheating on the above parameters were discussed. |
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| Keywords: | spray forming superalloy heat transfer mathematical model |
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