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Magnetic field under the action of continuous casting process of aluminum melt flow behavior

Author: HuYongQing
Tutor: HuShiCheng
School: Central South University
Course: Mechanical Design and Theory
Keywords: Continuous casting and rolling Cast mouth Flow field Numerical Simulation DC magnetic field Traveling magnetic field
CLC: TG339
Type: Master's thesis
Year: 2009
Downloads: 101
Quote: 3
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Abstract


The research background from continuous casting and rolling strip grain refinement requirements . Magnetic field refinement of grain to improve the temperature field , stress field form , is conducive to the aluminum alloy molding process optimization, high-performance casting strip . Continuous casting aluminum melt flow behavior in the magnetic field is an important aspect of the organization of the impact strip . To this end , the main research contents include the following : 1. Describes the flow field numerical simulation method , the control equation numerical discretization method and its solution . 3C - casting machine casting nozzle cavity melt flow regimes in different casting speed calculation , analysis, and provides the necessary basis for the correct establishment of the cast mouth the casting zone including aluminum melt flow model . Continuous casting and rolling conditions , the exit velocity of the configuration the different shunt block casting mouth aluminum melt , the outlet temperature analysis . Analysis of the shunt block positional parameters on the variation of the casting nozzle flow field , and cast mouth opening degree of the flow field . 3 . Analysis of continuous casting aluminum melt flow field , temperature field and force changes in the DC magnetic field . The results show that : the applied dc magnetic field alone is not conducive to the success of the continuous casting and rolling up to less than the purpose of grain refinement . Analysis of the continuous casting flow field characteristics traveling wave magnetic field , the magnetic field direction of movement of the traveling wave the aluminum melt flow behavior , temperature field and the force of the impact . The results show that : the traveling magnetic field is applied in the Z direction , The aluminum melt suffered most strongly happens in the casting zone is conducive to grain refinement . When traveling magnetic field frequency of about 20Hz and wavelength 0.2m , casting nozzle outlet flow field and temperature field distribution is relatively uniform.

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CLC: > Industrial Technology > Metallurgy and Metal Craft > Metal pressure processing > Rolling > Non-ferrous metal rolling
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