环缝式电磁搅拌对7N01合金连铸锭组织的影响

高明伟; 张志峰; 徐骏; 冯京; 盖洪涛

doi:10.15980/j.tzzz.2015.02.034

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环缝式电磁搅拌对7N01合金连铸锭组织的影响
Effect of Annular Electromagnetic Stirring on Solidification Structure of 7N01 Alloy Continuous Cast Billet
2015年35卷第2期页码：219-222
纸质出版日期： 2015 ，
DOI： 10.15980/j.tzzz.2015.02.034

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[1]高明伟,张志峰,徐骏,冯京,盖洪涛.环缝式电磁搅拌对7N01合金连铸锭组织的影响[J].特种铸造及有色合金,2015,35(02):219-222.

Gao Mingwei, Zhang Zhifeng, Xu Jun, et al. Effect of Annular Electromagnetic Stirring on Solidification Structure of 7N01 Alloy Continuous Cast Billet[J]. Special Casting & Nonferrous Alloys, 2015,35(2):219-222.
[1]高明伟,张志峰,徐骏,冯京,盖洪涛.环缝式电磁搅拌对7N01合金连铸锭组织的影响[J].特种铸造及有色合金,2015,35(02):219-222. DOI： 10.15980/j.tzzz.2015.02.034.

Gao Mingwei, Zhang Zhifeng, Xu Jun, et al. Effect of Annular Electromagnetic Stirring on Solidification Structure of 7N01 Alloy Continuous Cast Billet[J]. Special Casting & Nonferrous Alloys, 2015,35(2):219-222. DOI： 10.15980/j.tzzz.2015.02.034.

摘要

实现7N01铝铸锭组织细化均匀化是解决型材产品成材率低、力学性能不稳定、表面桔皮、条纹等缺陷问题的关键

为此开展了7N01铝合金铸锭环缝式电磁搅拌半连续铸造技术的研究。结果表明

施加环缝式电磁搅拌后

310mm规格的7N01合金连铸锭晶粒尺寸细化至200

00μm范围内

较普通铸锭晶粒尺寸降低了90%;晶粒自边部至心部尺寸分布范围由普通铸锭的800

200μm下降到施加环缝式电磁搅拌后的200

00μm内

均匀性得到显著改善;同时消除了普通铸锭易出现的粗大树枝晶等铸造缺陷

大大提高了铸锭质量。

Abstract

It is radically important to eliminate lots of defects such as unstable mechanical properties

stripes and wrinkles surface

and low production yield of 7N01 aluminum profile by achieving uniformly fine solidification structure in DC casting billets.Effects of the annular electromagnetic stirring on the solidification structure of the 7N01 alloy continuous cast billet were investigated.The results indicate that with the annular electromagnetic stirring

the grain size of the 7N01 continuous cast billet with310mm in diameter is refined to 200

00μm

which is 10% of the conventional DC cast billet.Meanwhile

the grain size is decreased from 800

200μm to 200

00μm with the obvious improvement of the homogeneity of the solidification structure.At the same time

the casting defects such as the feather crystals occurs in the normal DC casting process can be eliminated.