| 镁合金轮毂低压铸造过程模拟 |
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| 引用本文： | 王迎春,李大永,彭颖红,曾小勤.镁合金轮毂低压铸造过程模拟[J].上海交通大学学报,2005,39(1):32-35,45. |
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| 作者姓名： | 王迎春 李大永 彭颖红 曾小勤 |
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| 作者单位： | 上海交通大学,机械与动力工程学院,上海,200030;上海交通大学,材料科学与工程学院,上海,200030 |
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| 基金项目： | 国家高技术研究发展计划(863)资助项目(2002AA331120) |
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| 摘 要： | 运用软件PAM—CAS^TM对镁合金轮毂的低压铸造过程进行了数值模拟，研究了填充和凝固过程中温度场、流场以及液体分数等主要参数的分布，预测在此过程中可能出现的各种缺陷．结合镁合金独特的物理性能，分析了这些缺陷的形成机理，给出抑制这些缺陷的方法和措施．发现通过降低浇注速度，可有效地消除在浇铸过程中所产生的气孔和部分缩孔缺陷，以获得高质量的镁合金铸件．
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| 关 键 词： | 镁合金 轮毂 低压铸造 缺陷 |
| 文章编号： | 1006-2467(2005)01-0032-04 |
Numerical Simulation of Low Pressure Die Casting of Magnesium Wheel and Technology Improvement |
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| WANG Ying-chun,LI Da-yong,PENG Ying-hong,ZENG Xiao-qin.Numerical Simulation of Low Pressure Die Casting of Magnesium Wheel and Technology Improvement[J].Journal of Shanghai Jiaotong University,2005,39(1):32-35,45. |
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| Authors: | WANG Ying-chun LI Da-yong PENG Ying-hong ZENG Xiao-qin |
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| Institution: | WANG Ying-chun~1,LI Da-yong~1,PENG Ying-hong~1,ZENG Xiao-qin~2 |
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| Abstract: | The software for die casting, PAM-CAST~(TM), was utilized to simulate the low pressure die casting process of magnesium wheel. Through calculation of temperature field and velocity field during the filling and solidification stages, the evolution of temperature distribution and liquid fraction was analyzed. Then, the potential defects were forecasted. The formation mechanium was analyzed considering the (unique) character of magnesium alloy. The reasons leading to them were given and the solutions were put forward. Through reducing the pouring velocity, the air gas entrapments and partial shrinkages can be (elimiated) effectively. |
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| Keywords: | magnesium wheel low pressure die casting defects |
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