Note: Bonding of electric motor shaft to nylon face fan

Objective:

To bond a motor shaft to a nylon face fan without affecting the motor

End Product:

Nylon face fan

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:

Steel motor, body 0.79” (20mm) OD, 1.18” (30mm) long
steel shaft 0.39” (10mm) long, 0.06” (1.5mm) OD
nylon face fan 

Temperature:

248 ºF (120 ºC)

Frequency:

265 kHz

Testing:

A one-turn coil is used to heat the motor shaft to 248ºF (120ºC) for 1 second. The nylon will reflow and bond to the motor shaft. 

Benefits:

  • Hands-free heating that involves no operator skill for manufacturing

  • Only the metal shaft is heated so the motor is not affected

  • Increased production due to rapid heating

  • Decreased failure rate, originally used glue which ran into motor and caused failure

  • Stronger bond 

Bonding of electric motor shaft to nylon face fan

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