Effects of Spiral Magnetic Field on the Composition Segregation in the Metal during Solidification Process

Zhao Qian1; Fang Canfeng1; Hou Xiaoguang2; Han Yanbo1; Zhang Nan1; Zhang Xingguo1

Views : 0 下载量: 388 CSCD: 9

Export
Share
Collection
Album

Effects of Spiral Magnetic Field on the Composition Segregation in the Metal during Solidification Process
Vol. 31, Issue 6, Pages: 495-500(2011)
Published： 2011 ，
DOI：

扫描看全文

[1]赵倩,房灿峰,侯晓光,韩彦博,张楠,张兴国.螺旋磁场对金属凝固过程中成分偏析的影响[J].特种铸造及有色合金,2011,31(06):495-500.

Zhao Qian1, Fang Canfeng1, Hou Xiaoguang2, et al. Effects of Spiral Magnetic Field on the Composition Segregation in the Metal during Solidification Process. [J]. Special Casting & Nonferrous Alloys 31(6):495-500(2011)
[1]赵倩,房灿峰,侯晓光,韩彦博,张楠,张兴国.螺旋磁场对金属凝固过程中成分偏析的影响[J].特种铸造及有色合金,2011,31(06):495-500. DOI：

Zhao Qian1, Fang Canfeng1, Hou Xiaoguang2, et al. Effects of Spiral Magnetic Field on the Composition Segregation in the Metal during Solidification Process. [J]. Special Casting & Nonferrous Alloys 31(6):495-500(2011) DOI：

摘要

通过模拟钢连铸金属凝固的条件

以低熔点合金为研究对象

分析了螺旋磁场对凝固组织的影响。发现螺旋磁场能够消除成分偏析、碎断枝晶和细化凝固组织。同时

对比研究了不同磁场方式对凝固组织的影响。在相同电磁搅拌参数下

螺旋磁场比旋转磁场更能减小铸锭上下部成分之间的差异并细化晶粒

对促进铸锭成分均匀化有更好的效果;螺旋磁场电磁力分布更有利于形成较大区域的均匀搅拌

对形成等轴晶有明显的促进作用

且晶粒排列的方向性比旋转磁场处理下的更小

即各向同性效果更好。

Abstract

Effects of spiral magnetic field on solidification structure of the continuous casting low point alloy were investigated. It is found that the spiral magnetic field can effectively relieve the macro-segregation and cause the broke of dendrite and refinement of solidification structure. Meanwhile

effects of different magnetic fields on solidification structure were analyzed comparatively. The results reveal that

at the same electromagnetic stirring parameters

compared with rotating magnetic field

spiral magnetic field exhibits the better effect in decreasing composition segregation between the bottom and the top of ingot

refining grain size and promoting the homogenization of ingot composition. Distribution of electromagnetic force in the spiral magnetic field is more beneficial for the uniform stirring of the larger zone to effectively promote the formation of equiaxed grain. Meanwhile

orientation of grain arrangement in the spiral magnetic field is lower than that in rotating magnetic field

exhibiting the more acceptable isotropy.