Numerical Simulation Of Temperature Distribution In Magnesium Alloys Holding Furnace

As the wider use of the light metal,the requirement for magnesium alloy is more. Magnesium melting is emphasized for its important role to qualify the products.The induction heating generates heat by means of Joule heating effect resulting from an eddy current.It is widely used in industrial operations due to its high efficiency, precise control, low pollution properties and good security.However,the design of an induction heating system based on experiments can be tedious, time-consuming an expensive.The numerical simulation of the induction heating is of great value because the required technics and precision are higher.In this thesis,on the basis of the characteristics of induction heating,the numerical simulation of electromagnetic-thermal coupling field of magnesium alloy in induction heating process is studied and realized.With the use of the flow of coupling calculation of the universal FEM software ANSYS,the practical induction heating quenching process is simulated.Firstly,engineering backgrounds of the subject is introduced.Then,outlines the development and status about numerical simulation of induction heating at home and abroad.Finally, the backgounds of this project and the main contents as well as the significance of this paper are mentioned.Secondly, the analysis of the sequential coupling of electromagnetic and thermalfield is carried out by using ANSYS software. Tow heating process are simulated, including crucible and magnesium considering parameters along with temperatures change at indifferent time and different current density. The actual application operation in the induction heating process is simulated. Through observing the distribution of electromagnetic field and temperature field, the calculation results have been validated by analyzed many aspects. The results show that the computer simulation by finite element method is reasonable.In the end, on the base of summarizing the previous results, the research works to be continued is presented and in which the key problems to be solved are pointed out.