Rapid air film continuous casting of aluminum alloy using static magnetic field

2009 ◽  
Vol 22 (5) ◽  
pp. 339-344
Author(s):  
Fu QU ◽  
Huixue JIANG ◽  
Gaosong WANG ◽  
Qingfeng ZHU ◽  
Xiangjie WANG ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Aluminum Alloy ◽  
Continuous Casting ◽  
Static Magnetic Field ◽  
Air Film

Effect of Magnetic Field on Air Film Continuous Casting

2011 ◽  
Vol 189-193 ◽  
pp. 2827-2831
Author(s):  
Fu Qu ◽  
Jian Zhong Cui
Keyword(s):  
Magnetic Field ◽  
Static Magnetic Field ◽  
Low Frequency ◽  
Casting Process ◽  
Film Casting ◽  
Film Stability ◽  
Good Surface ◽  
Frequency Magnetic Field ◽  
Speed Up ◽  
Air Film

The influences of low frequency magnetic field and static magnetic field on the air film casting process are studied in this paper. 6063 aluminum alloy ingot of 174-mm diameter were produced by electromagnetic air film casting process; intensity of the coil current is from 50 to 200A, and frequency is from 15 to 30Hz. The results showed that low-frequency magnetic fields can speed up the flow of liquid metal in sump and the air film stability was undermined, leading to folds and segregations appeared on the ingot surface. Static magnetic field could inhibit the melt to erosion the solidified shell effectively, it’s help to improve the speed and pull good surface quality.

Effect of Static Magnetic Field on 2024 Aluminum Alloy Solidification Behavior

2011 ◽  
Vol 225-226 ◽  
pp. 701-705
Author(s):  
Chang Gui Cheng ◽  
Le Yu ◽  
Wen Cheng Wan ◽  
Zhong Tian Liu ◽  
Yan Jin
Keyword(s):  
Magnetic Field ◽  
Aluminum Alloy ◽  
Static Magnetic Field ◽  
Solidification Rate ◽  
Solidification Structure ◽  
Peltier Effect ◽  
Magnetic Flux Density ◽  
Solidification Behavior ◽  
2024 Aluminum Alloy ◽  
Alloy Solidification

With the methods of macrostructure observation and temperature measurement, the paper has studied the influence rules of static magnetic field on 2024 aluminum alloy solidification structure and solidification rate. The conclusions can be concluded as follows: the static magnetic field can inhibit the growth of columnar crystals and promote the growth of equiaxed crystals; when the magnetic flux density is increased, the grain refining effect is better, the solidification rate of 2024 aluminum alloy increases remarkably, and the full solidification time is shorter; the reasons of grain refinement may be that the thermo-electromagnetic convection effect related to Peltier effect is stronger than electromagnetic braking effect, which can enhance the heat transfer and fluid flow in the solidification front, and that undercooling temperature is enlarged.

Study on Heat Transfer Model of 2024 Aluminum Alloy under Static Magnetic Field

2011 ◽  
Vol 366 ◽  
pp. 229-233
Author(s):  
Chang Gui Cheng ◽  
Le Yu ◽  
Wen Cheng Wan ◽  
Zhong Tian Liu
Keyword(s):  
Magnetic Field ◽  
Heat Transfer ◽  
Aluminum Alloy ◽  
Static Magnetic Field ◽  
Transfer Problem ◽  
Heat Transfer Model ◽  
Transfer Model ◽  
Measured Temperature ◽  
2024 Aluminum Alloy ◽  
Magnetic Filed

The paper has established a two-dimensional non-steady-state heat transfer model for 2024 aluminum alloy solidification process under the static magnetic field. According to the measured temperature and the inverse heat transfer problem, the boundary conditions of model have been determined, the results show that the solidification rate and heat flux acting on the ingot surface increase with increasing of the static magnetic filed strength; when the static magnetic filed strength become stronger, the isotherm location will move towards the liquid pool center, and the temperature gradient in the liquid metal pool will increase.

Effect of Electromagnetic Field on Microstructure of 5052 Aluminum Alloy Sheet by Roll-Casting

2010 ◽  
Vol 146-147 ◽  
pp. 911-915
Author(s):  
Jin Tao Li ◽  
Guang Ming Xu ◽  
Jian Zhong Cui
Keyword(s):  
Magnetic Field ◽  
Electromagnetic Field ◽  
Aluminum Alloy ◽  
Static Magnetic Field ◽  
Alternating Current ◽  
Alloy Sheet ◽  
Aluminum Alloy Sheet ◽  
Oscillation Effect ◽  
Electromagnetic Oscillation ◽  
Roll Casting

The effect of electromagnetic field on microstructure of roll-casting 5052 aluminum alloy sheet has been investigated and analyzed. The results indicate that imposing static magnetic field can refine the grains of 5052 aluminum alloy during the roll-casting; accordingly, imposing static magnetic field and alternating current at the same time, the grains are remarkably refined and equiaxed due to electromagnetic oscillation effect.

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