Study and Application of Annulus Electromagnetic Stirring Process for Semi-Solid Slurry Preparation

Xu Jun; Tang Meng’ou; Zhang Zhifeng

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Study and Application of Annulus Electromagnetic Stirring Process for Semi-Solid Slurry Preparation
Vol. 31, Issue 10, Pages: 883-887(2011)
Published： 2011 ，
DOI：

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[1]徐骏,汤孟欧,张志峰.环缝式电磁搅拌制浆技术研究及其应用[J].特种铸造及有色合金,2011,31(10):883-887.

Xu Jun, Tang Meng’ou, Zhang Zhifeng. Study and Application of Annulus Electromagnetic Stirring Process for Semi-Solid Slurry Preparation. [J]. Special Casting & Nonferrous Alloys 31(10):883-887(2011)
[1]徐骏,汤孟欧,张志峰.环缝式电磁搅拌制浆技术研究及其应用[J].特种铸造及有色合金,2011,31(10):883-887. DOI：

Xu Jun, Tang Meng’ou, Zhang Zhifeng. Study and Application of Annulus Electromagnetic Stirring Process for Semi-Solid Slurry Preparation. [J]. Special Casting & Nonferrous Alloys 31(10):883-887(2011) DOI：

摘要

电磁搅拌技术是最早应用于制备半固态坯料的方法之一

然而集肤效应限制了该技术的进一步发展。提出环缝式电磁搅拌技术旨在破解这一难题。与普通电磁搅拌相比

环缝能避开磁场较低的部分

在环缝内形成的均匀旋转磁场

可以获得均匀的温度场和均匀凝固的细小组织。环缝式电磁搅拌连铸坯组织呈蔷薇状

在铸坯中分布均匀。与普通电磁搅拌相比

环缝式电磁搅拌技术能明显降低宏观偏析和显微偏析。

Abstract

The electromagnetic stirring process is a well-established production route for semi-solid slurry preparation

however

the skin effects restrained its application scope. In order to overcome the problem

annulus electromagnetic stirring process（AEMS） was presented. The annulus gap could avoid the part of low magnetic induction intensity

so uniform rotating magnetic filed could be generated in the annulus gap compared to conventional electromagnetic stirring

and then uniform temperature field and uniform fine grain in the structure could be obtained. Microstructure of annulus electromagnetic stirring continuous casting billets exhibits rosette structure

which is uniformly distributed into the billets. Compared with conventional electromagnetic stirring

annulus electromagnetic stirring can greatly decrease macro-segregation and micro-segregation.