超重力场对Al-17Si-4.5Cu熔体中固相夹杂分离的影响

宋高阳; 董立花; 王哲; 宋波; 黄伟军

doi:10.15980/j.tzzz.2019.04.001

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超重力场对Al-17Si-4.5Cu熔体中固相夹杂分离的影响
Effects of Super-gravity Field on Separation of Solid Inclusions in Al-17Si-4.5Cu Melt
2019年39卷第4期页码：349-353
纸质出版日期： 2019 ，
DOI： 10.15980/j.tzzz.2019.04.001

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[1]宋高阳,董立花,王哲,宋波,黄伟军.超重力场对Al-17Si-4.5Cu熔体中固相夹杂分离的影响[J].特种铸造及有色合金,2019,39(04):349-353.

Song Gaoyang, Dong Lihua, Wang Zhe, et al. Effects of Super-gravity Field on Separation of Solid Inclusions in Al-17Si-4.5Cu Melt[J]. Special Casting & Nonferrous Alloys, 2019,39(4):349-353.
[1]宋高阳,董立花,王哲,宋波,黄伟军.超重力场对Al-17Si-4.5Cu熔体中固相夹杂分离的影响[J].特种铸造及有色合金,2019,39(04):349-353. DOI： 10.15980/j.tzzz.2019.04.001.

Song Gaoyang, Dong Lihua, Wang Zhe, et al. Effects of Super-gravity Field on Separation of Solid Inclusions in Al-17Si-4.5Cu Melt[J]. Special Casting & Nonferrous Alloys, 2019,39(4):349-353. DOI： 10.15980/j.tzzz.2019.04.001.

摘要

将Al-17Si-4.5Cu熔体中初生Si颗粒模拟为固相夹杂物

利用超重力场恒温分离与受力分析、理论计算的方法研究熔体内部夹杂颗粒在不同重力场中的定向分离行为。结果表明

超重力场可以有效强化铝熔体中夹杂物的定向分离效果

且重力系数越大

Si颗粒分离效果越好。在普通重力场（G=1）条件下

直径为30μm的Si颗粒平衡运动速度为6.08×10-5 m/s

Si颗粒的分离效率仅为11.01%;而当超重力场G=500时

Si颗粒的运动速度为3.04×10-2 m/s

Si颗粒的分离效率达到了71.91%。

Abstract

The primary silicon particles in Al-17 Si-4.5 Cu melt were simulated as solid inclusions in the molten metal.Isothermal separation of inclusion particles from the melt was performed with super-gravity field

and force analysis and theoretical calculation of the particles were also investigated to understand the directional separation behaviors of solid particles in the melt under different gravity fields.The results reveal that

the supergravity field can enhance greatly the effect of directional separation of inclusion particles in the melt.Besides

the separating effect of the primary silicon becomes more desirable with the increase of the gravity coefficient.When the gravity coefficient G=1

the balanced moving velocity of the silicon particle with diameter of 30μm is 6.08×10-5 m/s

and the separation efficiency of the particle is merely 11.01%.However

under the condition of G=500

the moving velocity of the particle reaches 3.04×10-2 m/s

and the separation efficiency can reach up to71.91%.