Based on the electromagnetic induction heat treatment experiment of 100 mm thick-walled cylinder of φ1900 mm with external diameter,a step-type temperature rise control method was designed,and the influence of different induction heating parameters on temperature field of local heat treatment of cylinder was analyzed,and the optimal electromagnetic induction heating parameters were obtained.The results show that,according to the technical requirements of the holding temperature of 595-620 ℃,the best designed parameters are that the 20 mm diameter induction cable is selected with the induction coil number of 16,the width of the outer wall insulation is 1460 mm,the inner wall is fully insulated,and the turn spacing of 32 mm is the best design parameters.The larger the current frequency of the induction heating,the faster the heating rate of the cylinder surface.In order to maintain temperature uniformity,it is recommended to choose a smaller frequency of 2 kHz within the appropriate range.
local heat treatmentelectromagnetic induction heatingprocess optimizationtemperature uniformity
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