Finite element modeling analysis and simulation on induction heating process of food tank die

ZHANG Qi， HOU Sheng-ping
（Zhejiang Nanhua Anticorrosion Equipment Co.，Ltd.， Hangzhou 311255， China）

Abstract：The nick depth of the food tank cover would directly influence it's open and the anti-high-pressure requirement during packing. Change the length of the food tank die's underneath would change the nick depth of the roof cover. Aiming at real time control to the nick depth of food tank die's roof cover and the temperature distribution of the food tank die's underneath as well as temperature difference between die's surface and its core，through the magnetic-thermal coupling analysis function of ANSYS，the finite element modeling （FEM） of induction heating on the food tank die's underneath during the manufacture of the die's roof cover was completed and the die's underneath temperature distribution was determined. The results indicat that the die's cylinder surface temperature is high and the core's is lower with a small difference with that of the surface and the temperature of the die's underneath is increasing rapidly and linearly during induction heating. It also indicates that benefits of using induction heating would guarantee rapid and even heating. It means that the height of die's underneath varies evenly and is easy to be controlled，which supplies a theoretical foundation for the project of real-time control of the nick depth of food tank's roof cover.
Key words： finite element method； induction heating； food tank； real-time control