Note: Shrink fitting aluminum pulley to insert inner bearing
Objective:
Heat aluminum pulley for insertion of an inner bearing for the automotive industry
End Product:
pulley
Equipment:
Ambrell 2 kW induction heating system, equipped with a remote workhead containing two 0.33μF capacitors for a total of 0.66μF An induction heating coil designed and developed specifically for this application.
Materials:
Aluminum pulley 2.3 in (60 mm) OD x 1.6 in in (40 mm) ID x 1 in (27 mm) high and inner bearing 0.7 in (17.8 mm) high x 1.6 in (40 mm) dia
Temperature:
464 °F (240 °C)
Frequency:
283 kHz
Testing:
A three turn helical coil is used to heat the aluminum pulley. The pulley is heated to 464 °F (240 °C) in 20 seconds to expand the inner diameter and then the inner bearing is inserted to form the completed part.
Benefits:
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Defined and controlled heat pattern
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Process easily integrated into automated system
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Even distribution of heating

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