| 含氮树脂砂铸钢件气孔生成机理的探讨 |
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| 引用本文： | 李远才.含氮树脂砂铸钢件气孔生成机理的探讨[J].华中科技大学学报(自然科学版),1991(6). |
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| 作者姓名： | 李远才 |
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| 作者单位： | 华中理工大学机械工程二系 |
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| 摘 要： | 本文结合作者的实验研究数据,对氮等气泡借助于固-液界面现存的气膜进行生核所需的析出压力进行了计算和分析,研究了氮等气泡的长大和迁移特点,指明了凝固速度对铸钢件气孔(氮气孔)形成时的重要影响,从而较完整地阐述了含氮树脂砂铸钢件气孔生成的机理.
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| 关 键 词： | 气孔 含氮树脂砂 析出压力 氮气泡 铸钢件 |
On the Mechanism of Gas Cavity Formation in Steel Castings due to Nitrogenous Resin Sand |
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| Li Yuancai.On the Mechanism of Gas Cavity Formation in Steel Castings due to Nitrogenous Resin Sand[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,1991(6). |
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| Authors: | Li Yuancai |
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| Abstract: | Based on experimental data, calculation and analysis have been made on the precipitating pressure required for the formation of nitrogen nuclei on the available gas film at the liquid-solid interface. The features of the growth and mobility of the nitrogen bubbles and the effect of the solidification process on the gas(N2)cavity formation are discussed. |
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| Keywords: | Gas cavity Nitrogenous resin sand Precipitating pressure Nitrogen bubbles Steel castings |
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