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立式离心铸造过程中熔体横截面的变化规律
引用本文:吴士平,历长云,郭景杰,苏彦庆,毕维生,傅恒志.立式离心铸造过程中熔体横截面的变化规律[J].中国有色金属学报,2006,16(9):1517-1521.
作者姓名:吴士平  历长云  郭景杰  苏彦庆  毕维生  傅恒志
作者单位:哈尔滨工业大学,材料科学与工程学院,哈尔滨,150001
基金项目:黑龙江省自然科学基金;黑龙江省博士后科研启动基金
摘    要:对Ti合金立式离心铸件的充填和凝固过程进行研究。结果发现,在离心场下,柯氏力对熔体运动方向的改变影响非常大,熔体沿着与旋转方向相对的型壁进行正向加速充填,当达到最远端后反向充填。在正向充填过程中,对没有内浇道的铸型,熔体在横浇道内的截面面积随充填长度的增加而逐渐减小,当横浇道侧壁存在内浇道时,熔体通过内浇道进入型腔,导致熔体在内浇道入口处产生速度降,熔体横截面面积在该处有所回升,然后随充填长度的增加而减少。同时,旋转方向对有内浇道铸型的充填顺序影响非常大。

关 键 词:Ti合金  石墨型  立式离心铸造  截面面积
文章编号:1004-0609(2006)09-1517-05
收稿时间:2006-02-10
修稿时间:2006-07-18

Change rule of sectional area of melts during vertical centrifugal casting process
WU Shi-ping,LI Chang-yun,GUO Jing-jie,SU Yan-qing,BI Wei-sheng,FU Heng-zhi.Change rule of sectional area of melts during vertical centrifugal casting process[J].The Chinese Journal of Nonferrous Metals,2006,16(9):1517-1521.
Authors:WU Shi-ping  LI Chang-yun  GUO Jing-jie  SU Yan-qing  BI Wei-sheng  FU Heng-zhi
Affiliation:School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
Abstract:The filling and solidification of titanium alloy melts in the vertical centrifugal filed were investigated.The results show that the coriolis force plays an important role in the change of melts flow direction.With the action of the centrifugal force and coriolis force,the melts stick one of side of the mould to fill and tie side is opposite to the rotational direction.The whole filling process includes two filling parts: forward filling and back filling.During the forward filling process,the sectional area of the mould without the ingate decreases with the increase of filling length,but which is changeable with the increase of the filling length for the mould with ingate.The rotational(direction) plays an important role in the filling sequence of the mould with ingates.
Keywords:titanium alloy  graphite mould  vertical centrifugal casting  sectional area
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