| 引用本文: | 历长云,崔红保,许磊,王狂飞,吴士平,傅恒志.立式离心场下钛合金熔体充填过程数值模拟[J].材料科学与工艺,2010,18(4):567-570.DOI:10.11951/j.issn.1005-0299.20100427. |
| LI Chang-yun,CUI Hong-bao,XU Lei,WANG Kuang-fei,WU Shi-ping,FU Heng-zhi.Numerical simulation on filling process of titanium alloy melts in vertical centrifugal filed[J].Materials Science and Technology,2010,18(4):567-570.DOI:10.11951/j.issn.1005-0299.20100427. |
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| 摘要: |
| 本文通过数值模拟方式研究了不同铸造工艺参数对立式离心场下钛合金熔体充填过程的影响,数值模拟结果显示铸型旋转方向直接影响合金熔体的充填顺序,进而影响其凝固顺序及缺陷形成.在给定的转速范围内,钛合金熔体的充填时间随铸型转速的增加而减小,因此,转速的增加有利于加快合金熔体充填速度,使合金熔体在较短的时间内迅速充填型腔.同时熔体的过热度及铸型温度的增加有利于合金熔体的快速充填. |
| 关键词: 钛合金 立式离心场 数值模拟,旋转方向 |
| DOI：10.11951/j.issn.1005-0299.20100427 |
| 分类号:TG319 |
| 基金项目:河南理工大学博士启动基金(B2008-27) |
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| Numerical simulation on filling process of titanium alloy melts in vertical centrifugal filed |
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LI Chang-yun1, CUI Hong-bao1, XU Lei2, WANG Kuang-fei1, WU Shi-ping3, FU Heng-zhi1,3
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1.Institute of Physical Metallurgy School of Materials Science and Engineering,Henan Polytechnic University,Jiaozuo 454003,China;2.Dept.of Materials Science and Engineering,Tsinghua University,Beijing 100084,China;3.School of Materials Science and Engineering,Harbin Institute of Technology,Harbin 150001,China
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| Abstract: |
| This paper investigated the influence of different casting parameters on the filling process of titanium alloy melts in the vertical centrifugal filed.Numerical simulation results show that rotational direction affects the filling sequence directly,and then affects the solidification sequence and the position of defects.Within a given rotational velocity range,the filling time decreases with increasing rotational velocities.In addition,the increasing superheat of melts and mould temperature can accelerate the filling process of melts. |
| Key words: titanium alloy vertical centrifugal field numerical simulation rotational direction |
