Exploration And Simulation On Semi-solid Billet By Induction Heating In Temperature Field

Semi-solid metal forming(SSF) is a new metal forming technology and it had been developed at 1970s'. SSF have a great industrial interest because they have advantages such as reduction of macro-segregation, reduction of porosity, low forming efforts, possesses excellent mechanical properties of castings and possibility of near-net shape forming, etc. SSF of aluminum alloys is urgently necessary in automobile industry, space industry and electronic information industry, etc. In this paper, the technology and the characteristics of SSF are introduced, and induction reheating of Semi-solid metal billet are studied, which is one key techniques in the SSF. Summed up the existing research and the results achieved and on the basis of previous studies to target A356 alloy, the following design and research are conducted:1. Through mathematical modeling of induction heating model to be a reasonable simplification and derived in the billet heating process in the radial temperature distribution on the equation..2. Make the equivalent circuit of the induction heating system, Calculation of the relevant electrical parameters. Finally, the relationship between the temperature distribution of the energy equation combined with the electrical calculation, Solving the power supply by controlling the workpiece temperature control method.3. Useing the previous research carried out to verify the temperature distribution equation, Consider the heat and latent heat, etc.Make another simulation of magnesium Az91D alloy for the experiment to verify the theory made some preparations.