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| Study of Moisture Absorption of Combustible Cartridge Case |
| Received:February 26, 2011 Revised:August 15, 2011 |
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| DOI： |
| KeyWord:combustible cartridge case moisture drying hydroscopic |
| Author | Institution |
| JIA Hao-nan |
Ordnance Engineering College， Shijiazhuang ， China |
| LU Gui-e |
Ordnance Technology Research Institute， Shijiazhuang ， China |
| JIANG Jin-yong |
Ordnance Technology Research Institute， Shijiazhuang ， China |
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| Abstract: |
| The desiccation features and hygroscopic properties of rolled combustible cartridge case were studied by weighing method. The relationship between drying rate and drying time, moisture absorption rate and humidification of time, the equilibrium moisture content and environmental humidity was analyzed. The results showed that the time to reach constant weight of the sample in dry and wet conditions at room temperature prolonged with thickness increased; the higher the relative humidity, the greater the equilibrium moisture content of the cylinder wall. When the relative humidity was about 90%, its absorption rate was closed to 4%. Compared with its inner propellants, has much stronger dehydration properties and moisture absorption properties. Thickness is the important factor influencing moisture absorption velocity of the combustible cartridge case. |
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