Effects of Magnetic Pressure Constraint on Dynamic Deformation and Oscillation Behavior of Metal Free Surface
| Autor: | Yang Li, Sai-juan Zhang, Engang Wang, Chuan-qi Yin, An-yuan Deng |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Liquid metal
Materials science Oscillation Metals and Alloys Mechanical engineering 02 engineering and technology Mechanics Deformation (meteorology) 020501 mining & metallurgy Magnetic field Amplitude 0205 materials engineering Mechanics of Materials Electromagnetic coil Free surface Materials Chemistry Magnetic pressure |
| Zdroj: | Journal of Iron and Steel Research International. 23:1134-1141 |
| ISSN: | 2210-3988 1006-706X |
| DOI: | 10.1016/s1006-706x(16)30168-6 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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