Two Width Of Strip Transverse Flux Induction Heating Temperature Field Calculation

The strip is heated by the joule heat which is caused by magnetic flux in the transverse flux induction heating process.Compared with the traditional induction heating technology,the transverse flux induction heating has the advantages of saving energy,low heating frequency,low power consumption,and can be used for continuous heat treatment.However,the distribution of the surface temperature distribution of the outlet is not uniform,which restricts the application of the transverse flux induction heating technology.In this paper,the heating device of the eddy current field and temperature field simulation,analysis of the impact of the temperature distribution of the various factors,so as to achieve the optimization of the heater to lay the foundation.At first,a three-dimensional simulation model of the transverse flux induction heating device is established,and the corresponding parameters are set up.The coupling field simulation is carried out for the three kinds of induction heating device with rectangular,diamond and hexagonal structure.Through comparison of the eddy current distribution and temperature distribution of the strip surface,found that hexagon induction heater exit strip coil structure on the surface of the temperature distribution more uniform.Then,take hexagonal coil structure induction heater with good temperature distribution uniformity as an example,using a single variable method,through the coupling field simulation analysis,the coil change in direction along the strip width,the change of strip speed,excitation current amplitude and frequency of the influence of the change of heater exit temperature distribution.When the strip width is 1200 millimeter,the temperature distribution of the strip surface is obtained by simulation analysis,and the influence of the width of the coil along the direction of the strip on the temperature distribution of the outlet is studied.Finally,because the material parameters are influenced by temperature,and the real-time changes in the process of the strip motion,the coupling process of the transverse flux induction heating is complex.Therefore,in the process of continuous heating of the strip in uniform motion,causing corresponding location material conductivity,magnetic permeability,thermal conductivity and specific heat change with the temperature problem,iterative calculation method is used to solve it.