Effects of Magnetic Pressure Constraint on Dynamic Deformation and Oscillation Behavior of Metal Free Surface
Yang LI1,2,An-yuan DENG1,2,Chuan-qi YIN1,2,Sai-juan ZHANG1,2,En-gang WANG1,2
1. Key Laboratory of Electromagnetic Processing of Materials Ministry of Education, Northeastern University, Shenyang 110004, Liaoning, China 2. College of Metallurgy, Northeastern University, Shenyang 110004, Liaoning, China
Effects of Magnetic Pressure Constraint on Dynamic Deformation and Oscillation Behavior of Metal Free Surface
Yang LI1,2,An-yuan DENG1,2,Chuan-qi YIN1,2,Sai-juan ZHANG1,2,En-gang WANG1,2
1. Key Laboratory of Electromagnetic Processing of Materials Ministry of Education, Northeastern University, Shenyang 110004, Liaoning, China 2. College of Metallurgy, Northeastern University, Shenyang 110004, Liaoning, China
ժҪ A new method was presented to constrain deformation and oscillations of liquid metal free surface by using a high frequency magnetic field. A magnetic field generator was designed to investigate its feasibility using numerical simulation and physical simulation. The results indicate the feasibility of controlling bulge deformation of liquid metal surface using magnetic pressure. Sunken deformation with a slight fluctuation occurs on the surface when magnetic pressure acts on the static liquid metal surface. The largest amplitude remains within ��0��8 mm even if current reaches 1400 A. In case of the bump-type deformation, the magnetic pressure strengthens gravity field by the superposition effect, dissipates the kinetic energy of metal flow impacting on free surface in advance, reduces the velocity of free surface, and decreases the bulge height. On the region without magnetic field, the liquid metal surface rises and tends to be flat because of the significant damping effect on surface fluctuation. The constraint strength of the magnetic pressure increases with the augment of current intensity. However, different heights of bulge deformation should have a corresponding reasonable coil current for achieving the best constraint effect.
Abstract��A new method was presented to constrain deformation and oscillations of liquid metal free surface by using a high frequency magnetic field. A magnetic field generator was designed to investigate its feasibility using numerical simulation and physical simulation. The results indicate the feasibility of controlling bulge deformation of liquid metal surface using magnetic pressure. Sunken deformation with a slight fluctuation occurs on the surface when magnetic pressure acts on the static liquid metal surface. The largest amplitude remains within ��0��8 mm even if current reaches 1400 A. In case of the bump-type deformation, the magnetic pressure strengthens gravity field by the superposition effect, dissipates the kinetic energy of metal flow impacting on free surface in advance, reduces the velocity of free surface, and decreases the bulge height. On the region without magnetic field, the liquid metal surface rises and tends to be flat because of the significant damping effect on surface fluctuation. The constraint strength of the magnetic pressure increases with the augment of current intensity. However, different heights of bulge deformation should have a corresponding reasonable coil current for achieving the best constraint effect.
��������:Item Sponsored by National Natural Science Foundation of China;Item Sponsored by National Natural Science Foundation of China;the Doctoral Scientific Research Foundation of Liaoning Province of China;the Fundamental Research Funds for the Central Universities of China; the Program of Introducing Talents of Discipline to Universities
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E-mail: dengay@epm.neu.edu.cn
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Yang LI,,An-yuan DENG,,Chuan-qi YIN,,Sai-juan ZHANG,,En-gang WANG,. Effects of Magnetic Pressure Constraint on Dynamic Deformation and Oscillation Behavior of Metal Free Surface[J]. �й������ڿ���, 2016, 23(11): 1134-1141.
Yang LI,,An-yuan DENG,,Chuan-qi YIN,,Sai-juan ZHANG,,En-gang WANG,. Effects of Magnetic Pressure Constraint on Dynamic Deformation and Oscillation Behavior of Metal Free Surface. Chinese Journal of Iron and Steel, 2016, 23(11): 1134-1141.
2016, Vol. 23 
