Efficiency of a DC magnetic field used for braking the flow within a continuous casting mould

PAMM ◽  
2011 ◽  
Vol 11 (1) ◽  
pp. 661-662
Author(s):  
Xincheng Miao ◽  
Klaus Timmel ◽  
Sven Eckert ◽  
Dirk Lucas ◽  
Gunter Gerbth
Keyword(s):  
Magnetic Field ◽  
Continuous Casting ◽  
Dc Magnetic Field ◽  
Continuous Casting Mould

scholarly journals Parametric investigation on an industrial electromagnetic continuous casting mould performance

2017 ◽  
Vol 4 (4) ◽  
pp. 256-262 ◽  
Author(s):  
Lintao Zhang ◽  
Anyuan Deng ◽  
Ian Cameron ◽  
Engang Wang ◽  
Johann Sienz
Keyword(s):  
Magnetic Field ◽  
Continuous Casting ◽  
Alternating Current ◽  
Quantitative Investigation ◽  
Current Frequency ◽  
Designed Experiment ◽  
Slit Length ◽  
Continuous Casting Mould ◽  
The Magnetic Field ◽  
Electromagnetic Continuous Casting

Abstract This research aimed at conducting a quantitative investigation of process parameters on the magnetic field contribution in an electromagnetic continuous casting mould. The Taguchi method (4 factors and 3 factor value levels: L9 orthogonal array) was adopted to design matrix of the simulation runs and the analysis of variance was used to evaluate the contributions of each control factor. The simulations were conducted based on the finite element method and the numerical set-up was validated by the designed experiment. The results showed that the applied alternating current magnitude contributed most (76.64%) to the magnetic field level in the mould, compared to the other control factors. It was followed by the slit length (17.72%), the alternating current frequency (4.17%) and the slit width (1.57%). Highlights Numerical system was validated by the designed experiment. A quantitative investigation of process parameter on the magnetic field in contribution an EMCC mould was conducted. The current value was the most influential factor, followed by the slit length, current frequency and the slit width.

Effects of Magnetic Field on the As-Cast Structures of Dual-Ingot Low Frequency Electromagnetic Semi-Continuous Casting

2010 ◽  
Vol 97-101 ◽  
pp. 1033-1036
Author(s):  
Gao Song Wang ◽  
Zhi Hao Zhao ◽  
Jian Zhong Cui ◽  
Shuai Dong
Keyword(s):  
Magnetic Field ◽  
Continuous Casting ◽  
Three Dimensional ◽  
Low Frequency ◽  
Casting Process ◽  
Element Model ◽  
Magnetic Flux Density ◽  
Continuous Casting Process ◽  
Continuous Casting Mould ◽  
Three Dimensional Finite Element

Based on the non-uniform distribution of magnetic field within the ingot caused by its interactions during the dual-ingot low-frequency electromagnetic semi-continuous casting process, a three-dimensional finite element model was constructed. This model was meshed and calculated with the ANSYS software, and the distribution of magnetic field in low-frequency semi-continuous casting mould was obtained. The influence of the distance and current directions between two coils on magnetic field distribution in the ingot was studied. Calculated results showed that, during dual-ingot low-frequency electromagnetic semi-continuous casting process, whether the current was in the same direction or the reverse, magnetic field density on the remote end should be greater than that on the proximal of the same ingot; when the current directions of nearby coils were reverse, the magnetic intensity on ingot was higher than that with the same directions; as the distance between coils increased, the distal and proximal difference of magnetic flux density declined. Based on the results, a casting mould for dual-ingot electromagnetic semi-continuous casting ø152mm 7075 aluminum alloy was designed and produced. The experimental results showed that when the current directions of nearby coils were reverse, the as-cast macrostructures were a little bit better than that with the same directions. Moreover, when the current directions were reverse, the heterogeneity of the as-cast inner structure could be almost ignored.

Effect of Magnetic Fields on the Resistance and Microstructure of Al-Cu Alloy during Solidification Processing

2011 ◽  
Vol 287-290 ◽  
pp. 2916-2920
Author(s):  
Chun Yan Ban ◽  
Peng Qian ◽  
Xu Zhang ◽  
Qi Xian Ba ◽  
Jian Zhong Cui
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Turning Points ◽  
Probe Method ◽  
Solidification Processing ◽  
Ac Magnetic Field ◽  
Dc Magnetic Field ◽  
Cu Alloy ◽  
The Difference ◽  
Good Agreement

The resistance of Al-21%Cu alloy under no magnetic field, DC magnetic field and AC magnetic field from liquid to solid was measured by a four-probe method. The difference of resistance versus temperature curves (R-T curves) was analyzed. It is found that the R-T curves of Al-21%Cu alloy are monotone decreasing and have two obvious turning points. Under DC magnetic field, the liquidus and solidus temperatures of the alloy both decrease, while under AC magnetic field, the liquidus and solidus temperatures both increase. There is a good agreement between the microstructure of quenching sample and R-T curves. The mechanism of the effect of magnetic fields was discussed.

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