| 引用本文: | 徐志新,余新泉,顾洋,张友法.核级蝶阀阀体铸造工艺数值模拟[J].材料科学与工艺,2013,21(1):118-122.DOI:10.11951/j.issn.1005-0299.20130121. |
| XU Zhi-xin,YU Xin-quan,GU Yang,ZHANG You-fa.Numerical simulation of casting process for nuclear power butterfly valve body[J].Materials Science and Technology,2013,21(1):118-122.DOI:10.11951/j.issn.1005-0299.20130121. |
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| 摘要: |
| 蝶阀阀体是蝶阀上的核心零部件,服役时承受高温高压,因而要求其组织致密,不允许有缩孔、缩松和气孔等缺陷.本文先用SolidWorks软件对蝶阀体进行实体造型,然后利用JSCAST软件对铸件进行充型和凝固过程模拟,预测铸件充型过程中可能产生的充填不良、裹气现象及凝固过程中可能发生缩孔、缩松缺陷的位置,然后对模拟结果进行工艺优化.模拟结果表明,改进后的铸造工艺能够实现平稳的充型,充型结束后铸件各部位温差较小；铸件能够顺序凝固,有害热节全部消失,缩孔或缩松缺陷也相应的消除.实际生产对模拟结果进行了有效的验证. |
| 关键词: 阀体 充型 凝固 热节 缩孔 |
| DOI：10.11951/j.issn.1005-0299.20130121 |
| 分类号: |
| 基金项目:江苏省重大科技成果转化资金资助项目(BA2010099). |
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| Numerical simulation of casting process for nuclear power butterfly valve body |
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XU Zhi-xin1,YU Xin-quan1,GU Yang2,ZHANG You-fa1
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(1.Jiangsu Key Laboratory of Advanced Metallic Materials,Southeast University ,Nanjing 211189,China;;2.Jiangsu Shentong Valve Co.,Ltd,Qidong 226232,China)
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| Abstract: |
| The SolidWorks and JSCAST software are used to simulate the mold filling and solidification process of nuclear power butterfly valve body,and the prediction of phenomena of bad filling wrapped gas during mold filling process and the location of shrinkage,shrinkage porosity in solidification process are given,at last,the filling and solidification process are optimized.The simulation results show that the smooth filling process and order solidification can be achieved and the temperature difference between the parts of casting is small after filling.The hot spot defects almost disappear,and the shrinkage and porosity decreases.The actual production has verified the simulation results. |
| Key words: valve body,filling,solidification,hot spots,shrinkage cavity |
