scholarly journals Electromagnetic field boundary conditions on moving interfaces in high frequency case

2009 ◽  
Vol 58 (10) ◽  
pp. 6770
Author(s):  
Tan Kang-Bo ◽  
Liang Chang-Hong
Keyword(s):  
Electromagnetic Field ◽  
Boundary Conditions ◽  
High Frequency ◽  
Field Boundary ◽  
Moving Interfaces

scholarly journals Effect of high-frequency electromagnetic field on microstructure of mold flux

2020 ◽  
Vol 39 (1) ◽  
pp. 368-376
Author(s):  
Xingjuan Wang ◽  
Hebin Jin ◽  
Liguang Zhu ◽  
Ran Liu ◽  
Tushun Song
Keyword(s):  
Electromagnetic Field ◽  
High Frequency ◽  
Mold Flux ◽  
Film Structure ◽  
Glass Layer ◽  
Slag Film ◽  
Flux Flow ◽  
Layer Form ◽  
Finite Element Software ◽  
High Frequency Electromagnetic Field

AbstractSoft-contact of molten steel can be achieved by applying a high-frequency electromagnetic field above the mold of continuous casting, which can effectively eliminate surface defects and achieve billets with no cracks and no oscillation marks. It also has some influence on the mold flux. In this study, the effect of a high-frequency electromagnetic field (20 kHz) on a mold flux flow field was simulated using a finite element software, and the slag film was extracted using a slag film simulator. The effect of the high-frequency magnetic field on the microstructure of the mold flux was analyzed using X-ray diffraction, Raman spectroscopy, and mineral phase testing. The results show that the high-frequency electromagnetic field disrupts the orderly movement and increases the movement rate of the liquid flux. The precipitate phase of the slag film did not change, but the silicate dimer Q1 decreased, the chain Q2 increased, and the network degree was increased. The slag film structure changed from the original two-layer form of crystalline layer–glass layer into a three-layer form of crystal layer–glass layer–crystal, and the crystallization ratio increased by 35% on average. The grain-size melilite granularity was reduced from the original 0.12 to 0.005 mm.

Electromagnetic field decay in high-frequency flare discharge plasma

2006 ◽  
Vol 32 (5) ◽  
pp. 379-380 ◽  
Author(s):  
Yu. Yu. Lutsenko ◽  
V. A. Vlasov ◽  
I. A. Tikhomirov
Keyword(s):  
Electromagnetic Field ◽  
High Frequency ◽  
Discharge Plasma ◽  
Field Decay
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