Inductioin Shrink Fitting Aluminum Pulley With IGBT Heating Units
Objective Heat aluminum pulley for insertion of an inner bearing for theย automotive industry
Material Aluminum pulley 2.3โ (60mm) OD x 1.6โ (40mm) ID x 1โย (27mm) high and inner bearing 0.7โ (17.8mm) high x 1.6โย (40mm) dia
Temperature 464 ยบF (240 ยบC)
Frequency 283 kHz
Equipment โข DW-UHF-4.5kW induction heating system, equipped with aย remote workhead containing two 0.33ฮผF capacitors for aย total of 0.66ฮผF
โข An induction heating coil designed and developedย specifically for this application.
Process A three turn helical coil is used to heat the aluminum pulley.
The pulley is heated to 464 ยบF (240 ยบC) in 20 seconds toย expand the inner diameter and then the inner bearing isย inserted to form the completed part.
Results/Benefits Induction heating provides:
โข Defined and controlled heat pattern
โข Process easily integrated into automated system
โข Even distribution of heating
