| 低压铸造下凝固过程缩孔缩松的预测方法研究 |
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| 引用本文： | 王忠,牛晓峰,侯华,黄志伟,穆彦青.低压铸造下凝固过程缩孔缩松的预测方法研究[J].铸造,2011,60(10). |
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| 作者姓名： | 王忠 牛晓峰 侯华 黄志伟 穆彦青 |
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| 作者单位： | 1. 山推工程机械股份有限公司推土机事业部技术部,山东济宁,272000
2. 中北大学材料科学与工程学院,山西太原,030051 |
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| 基金项目： | 国家自然科学基金(50975363/E050801); 山西留学基金(2008061) |
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| 摘 要： | 基于铸件铸型的传热学基础,详细研究了低压铸造下铸件缩孔缩松缺陷的形态,考虑到低压铸造补缩具有重力补缩和压力补缩双重性质的规律,以及压力对临界固相率的影响,提出了一种新的预测低压铸造下缩孔缩松预测的方法,并建立了数学模型.该预测技术基于中北大学特种液态成形技术研究中心所开发的EasyCast软件进行研究,并集成到该软件中.最后将模拟结果与实验结果进行对比,显示该模型能够较好地表现低压铸件的缩孔缩松.
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| 关 键 词： | 低压铸造 缩孔 缩松 数值模拟 |
Prediction Method of Shrinkage and Dispersed shrinkage During Solidification Process Under Low-Pressure Casting |
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| WANG Zhong,NIU Xiao-feng,HOU Hua,HUANG Zhi-we,MU Yan-qing.Prediction Method of Shrinkage and Dispersed shrinkage During Solidification Process Under Low-Pressure Casting[J].Foundry,2011,60(10). |
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| Authors: | WANG Zhong NIU Xiao-feng HOU Hua HUANG Zhi-we MU Yan-qing |
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| Affiliation: | WANG Zhong1,NIU Xiao-feng2,HOU Hua2,HUANG Zhi-wei2,MU Yan-qing2(1.Bulldozer Division of Shantui Construction Machinery Co.,Ltd.,Jining 272000,Shandong,China,2.Material Science and Engineering College,North University of China,Taiyuan 030051,Shanxi,China) |
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| Abstract: | According to the theory of heat transfer,a new prediction method of shrinkage and dispersed shrinkage was presented through detailedly analyzing the shape of shrinkage and dispersed shrinkage under low-pressure casting.The rules of the low-pressure casting feeding which is dual-property of both gravity feeding and low pressure feeding were considered,as well as the effect of the pressure on critical solid fraction,and the mathematic model was built.The prediction technology was based on the self-developed E... |
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| Keywords: | low-pressure casting shrinkage dispersed shrinkage numerical simulation |
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