| 铝合金汽缸盖低压铸造数值模拟及工艺优化 |
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| 引用本文： | 赵建华,刘涛,曾礼,徐慧. 铝合金汽缸盖低压铸造数值模拟及工艺优化[J]. 热加工工艺, 2011, 40(1) |
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| 作者姓名： | 赵建华 刘涛 曾礼 徐慧 |
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| 作者单位： | 1. 重庆大学,材料科学与工程学院,重庆,400045;重庆大学,国家镁合金材料工程技术研究中心,重庆400045
2. 重庆大学,材料科学与工程学院,重庆,400045 |
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| 基金项目： | 重庆市科技攻关项目(CSTC2008AA4029CSTC2009AC3062) |
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| 摘 要： | 利用铸件凝固过程数值分析方法研究了铝合金汽缸盖的低压铸造凝固过程,预测了缸盖铸件内部可能产生的缺陷。模拟显示,内浇口到零件厚壁之间的通道易形成缩孔缺陷。根据模拟结果及理论,对低压铸造工艺进行了优化设计,分别采用增设冷却系统、控制模具的预热温度、对浇口进行保温处理三种工艺措施。同时采用上述三种工艺措施,对消除缸盖铸件热节点的缩孔、缩松缺陷效果最好。
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| 关 键 词： | 汽缸盖 数值模拟 工艺优化 低压铸造 |
Numerical Simulation and Process Optimization on Low Pressure Casting for Aluminum Alloy Cylinder Head |
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| ZHAO Jianhua,LIU Tao,ZENG Li,XU Hui. Numerical Simulation and Process Optimization on Low Pressure Casting for Aluminum Alloy Cylinder Head[J]. Hot Working Technology, 2011, 40(1) |
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| Authors: | ZHAO Jianhua LIU Tao ZENG Li XU Hui |
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| Affiliation: | ZHAO Jianhua1,2,LIU Tao1,ZENG Li1,XU Hui1(1.College of Materials Science and Engineering,Chongqing University,Chongqing 400045,China,2.National Engineering Research Center for Magnesium Alloys,China) |
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| Abstract: | The method of casting solidification numerical analysis was used to study the solidification stage of aluminum alloy cylinder head in low-pressure casting process,the inner defects of cylinder head casting were predicted.The results indicate that the shrinkage defects are prone to form at the passage between ingate and thick wall of part.According to the simulation results and theory,the low pressure casting process is optimized.The measures of adding cooling system,controlling the die's preheating temperat... |
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| Keywords: | cylinder head numerical simulation process optimization low-pressure casting |
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