| Study on Numerical Simulation of Mold Filling and Solidification Processes under Pressure Conditions |
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| 作者姓名： | ShoumeiXIONG BaichengLIU |
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| 作者单位： | DepartmentofMechanicalEngineering,TsinghuaUniversity,Beijing100084,China |
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| 基金项目： | The work was financially supported by the Significant Fundamental Research Development & Planning of China (G2000067208-3)，the Significant Project of the National Natural Science Foundation of China (59990470-3)，and the internal research fund of Tsing |
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| 摘 要： | The mold filling and solidification simulation for the high pressure die casting (HPDC) and low pressure die casting (LPDC) processes were studied.A mathematical model considering the turbulent flow and heat transfer phenomenon during the HPDC process has been established and paralled computation technique was used for the mold filling simulation of the process.The laminar flow characteristics of the LPDC process were studied and a simplified model for the mold filling process of wheel castings has been developed.For the solidification simulation under pressure conditions,the cyclic characteristics and the complicated boundary conditions were considered and techniques to improve the computational efficiency are discussed.A new criterion for predicting shrinkage porosity of Al alloy under low pressure condition has been developed in the solidification simulation process.
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| 关 键 词： | 高压熔模铸造 低压熔模铸造 凝固 数值模拟 模型装料 |
| 收稿时间： | 2001-08-30 |
Study on Numerical Simulation of Mold Filling and Solidification Processes under Pressure Conditions |
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| Shoumei XIONG,Baicheng LIU,Liangrong JIA,Xinghuo WEN.Study on Numerical Simulation of Mold Filling and Solidification Processes under Pressure Conditions[J].Journal of Materials Science & Technology,2002,18(5):413-416. |
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| Authors: | Shoumei XIONG Baicheng LIU Liangrong JIA Xinghuo WEN |
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| Affiliation: | Department of Mechanical Engineering, Tsinghua University,Beijing 100084, China |
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| Abstract: | The mold filling and solidification simulation for the high pressure die casting (HPDC) and low pressure die casting (LPDC) processes were studied. A mathematical model considering the turbulent flow and heat transfer phenomenon during the HPDC process has been established and parallel computation technique was used for the mold filling simulation of the process. The laminar flow characteristics of the LPDC process were studied and a simplified model for the mold filling process of wheel castings has been developed. For the solidification simulation under pressure conditions, the cyclic characteristics and the complicated boundary conditions were considered and techniques to improve the computational efficiency are discussed. A new criterion for predicting shrinkage porosity of Al alloy under low pressure condition has been developed in the solidification simulation process. |
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| Keywords: | Mold filling Solidification Numerical simulation High pressure die casting Low pressure die casting |
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