| 大直径纯铝空心锭裂纹的成因与防止 |
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| 引用本文： | 扆攀峰,冯春贵. 大直径纯铝空心锭裂纹的成因与防止[J]. 特种铸造及有色合金, 2006, 26(3): 191-192 |
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| 作者姓名： | 扆攀峰 冯春贵 |
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| 作者单位： | 北京有色金属研究总院 |
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| 摘 要： | 针对离心铸造大直径纯铝空心锭存在的裂纹缺陷．分析了金属中杂质含量和工艺参数对裂纹的影响．并提出了防止措施：控制原材料中的0.008％≤[ω（Fe）-ω（Si）]≤0．020％、铸模的转速为380r／min、预热温度为280℃、浇牲温度为690℃，同时涂ZnO和滑石粉控制冷却速度。
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| 关 键 词： | 铝锭 铸模转速 裂纹 浇注温度 冷却速度 |
| 文章编号： | 1001-2249（2006）03-0191-02 |
| 收稿时间： | 2005-09-03 |
| 修稿时间： | 2005-09-03 |
Origination and Elimination of Crack in Hollow Pure Al Ingot with Large Diameter |
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| Yi Panfeng,Feng Chungui. Origination and Elimination of Crack in Hollow Pure Al Ingot with Large Diameter[J]. Special Casting & Nonferrous Alloys, 2006, 26(3): 191-192 |
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| Authors: | Yi Panfeng Feng Chungui |
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| Abstract: | Origination of crack in hollow pure Al ingot with large diameter in centrifugal casting was analyzed from the aspects of Fe/Si ratio in raw materials, rotating velocity of cast mould, preheating temperature, pouring temperature of liquid Al and cooling rate based on practical experience in the combination of theoretical analysis, and the countermeasures were proposed. The formation mechanism and influenctial factors of the crack were investigated, and the effective countermeasures were given. |
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| Keywords: | Aluminum Ingot Rotating Velocity Crack Pouring Temperature Cooling Rate |
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