Design Of Transverse Flux Induction Heating Device For Metal Strips And Optimization Of Key Parameters

Transverse flux induction heating is by way of electromagnetic induction,eddy current generated within the heated plate,through the eddy current heat to achieve the purpose.The method has the characteristics of high heating efficiency,high speed,less pollution and easy control,which makes the technology have a good development prospect.In recent years,transverse flux induction heating has become one of the hot spots in the field of metal strip heating.In this paper,on the background of "Aluminum Foil Rolling Induction Heating System of an Aluminum Company Limited" and the laboratory small-scale transverse flux induction heating experimental apparatus,based on the relevant literature both at home and abroad,the initial stage design of the transverse induction heating system been found,and through the air gap and kl value adjustment to optimized it.The influence of current frequency,air gap and current intensity on the strip temperature was analyzed by COMSOL software.The design of the sensor was further optimized by adding a shielding device.The main research contents are as follows:(1)Based on the basic theories of electromagnetics,heat transfer and induction heating,the calculation formulas of intensity distribution function.Current density distribution function and power density of transverse induction heating field and the electromotive force of induction coil are derived.According to the size,material,Heating temperature,heating rate and other specific requirements,completed the basic design of transverse induction heating device.(2)Based on the obtained basic design,COMSOL software was used to simulate the temperature distribution,magnetic flux distribution and eddy current distribution in the strip.The air gap and the optimal value of kl of the induction heating device are determined,and the optimized design of the induction heating device is realized.(3)The single-variable method was used to simulate the transverse flux induction heating device with different current frequency,air gap and amperage.The comparative analysis of the results shows that the influence of each parameter on the strip temperature distribution at the outlet is obtained.The induction heating device design and manufacture provide a reference and guidance.(4)Aiming at the situation that the edge of strip’s temperature is too high,the method of adding the shielding device is adopted to improve it,the size of the shielding device through the comparative experiment be confirm,the better design scheme of sensor with improved overheating of the edge and better temperature uniformity is obtained.