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方坯连铸结晶器电磁搅拌的数值模拟魏宁1,包燕平1,吴华杰1,王国新1,留津津1(1.北京市北京科技大学 冶金与生态工程学院)摘 要:根据麦克斯韦电磁理论,利用有限元分析软件ANSYS对240mm×280mm方坯结晶器电磁搅拌的磁场进行数值模拟.分析电流强度,电流频率及结晶器铜管等对搅拌器内磁场分布的影响,得到了磁场特性与电磁搅拌参数的关系.研究结果表明:旋转磁场在结晶器搅拌区域内产生旋转电磁力,使钢液在水平方向形成旋转流动;磁感应强度随电流强度的增大呈线性递增;在低频搅拌条件下频率对电磁搅拌强度的影响较小,而铜......
Effect of electromagnetic stirring in mold on the macroscopic quality of high carbon steel billetHaiqi YU and Miaoyong ZHU School of Materials and Metallurgy,Northeastern University,Shenyang 110004,China摘 要:An industrial plant trial for optimizing the process parameters in a round billet continuous casting mold with electromagnetic stirring(M-EMS......
Model prediction of the effect of in-mold electromagnetic stirring on negative segregation under bloom surfaceYu-kun Huo1,2,Li-hua Zhao1,2,Hang-hang An1,3,Min Wang1,Chang-dong Zou41. State Key... based on the volume average method to study the effect of in-mold electromagnetic stirring(M-EMS) on the negative segregation under the bloom surface. In the model, the influence of dendrite structure......
slurry of Al-Zn-Mg-Cu aluminum alloy by weak electromagnetic stirring[J]. The Chinese Journal of Nonferrous Metals, 2016, 26(12): 2499-2505. [18] 王少华, 杨守杰, 房灿峰, 王剑钊, 戴圣龙, 张兴国. 电磁铸造对Al-Zn-Mg-Cu-Zr 合金微观组... of different electromagnetic stirring ways 2 结果与分析 2.1 磁场频率对合金凝固组织的影响 图2所示为不同磁场频率,相同搅拌时间,双向连续电磁搅拌下铝合金浆料的凝固显微组织.从图2可以看出,铝熔体经双向连续电磁搅拌处理后,显微组织相较于传统条件下的铸态组织发生了显著的变化.图2(a)所示为熔体施加10 Hz双向电磁连续搅拌时,初......
Effect of electromagnetic stirring on the microstructure and wear behavior of iron-based composite coatingsJiangbo Cheng1,2), Binshi Xu2), Xiubing Liang2), Yixiong Wu1), and Zhengjun Liu3) 1) School...) School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110023, China摘 要:The effect of electromagnetic stirring......
Annular electromagnetic stirring--a new method for the production of semi-solid A357 aluminum alloy slurryGuanglei ZHU,Jun XU,Zhifeng ZHANG,Yuelong BAI and Likai SHI National Engineering &... for producing semisolid slurry,annular electromagnetic stirring(AEMS),to refine and spheroidize grains was exploited.Experimental work was undertaken to investigate the effects of cooling rate,stirring power......
]. On the electromagnetic stirring, Vives[7, 8] firstly brought forward the method of permanent-magnet(PM) rotation. The mechanical rotation of permanent magnet produces rotatory magnetic field and induced... that the distribution of Al and Zn is mainly in the domain of β phase, and has little fraction in the α-Mg matrix. Moreover, Zn lays in matrix, acting as the solid solution form[14]. Electromagnetic stirring......
D, MAO W M, LI S, ZHONG R M. Preparation of semisolid AlSi7Mg alloy slurry though weak traveling-wave electromagnetic stirring[J]. Rare Metals, 2010, 21(6): 139-145. [2] 刘 政, 周翔宇. 分级电磁搅拌对半固态Al-Cu合金凝固组织的影响[J]. 中国有色金属学报, 2015, 25(1): 49-57. LIU Zheng, ZHOU Xiang-yu. Effect of staged electromagnetic stirring on solidification structure of semi-solid Al-Cu alloy[J]. The Chinese Journal of Nonferrous......
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undercooling. When the stirring rate was high, the effect of the melt undercooling on the incubation time for the formation of non-dendritic microstructures was weak. The morphology of primary microstructures... the cooling rate was high, the effect of the melt undercooling on the incubation time for the formation of non-dendritic microstructures was weak. The globular microstructure formed at high stirring rate......
