Note: Heating turbine engine fan blades for welding

Objective:

To uniformly heat jet engine turbine fan blades to 1800 °F (982.2 °C) within five minutes for a welding application 

End Product:

Turbine engine fan blades

Equipment:

Ambrell 3.5 kW induction heating system equipped with a remote workhead.
An induction heating coil designed and developed specifically for this application. 

Materials:

Jet engine turbine fan blades with 2 in (50.8 mm) length tip 

Temperature:

1800 °F (982.2 °C)

Frequency:

216 kHz

Testing:

A four-turn helical coil with a kidney shape is used to provide uniform heat for this application. The turbine blade is placed inside the coil and power is applied for 5 minutes until the top 0.25 in (6.35 mm) of the blade reaches 1800 °F (982.2ÂşC). An optical pyrometer is used to measure the temperature of the part. 

Benefits:

  • Even and consistent distribution of heat

  • Faster production rate

  • Reduces product waste through rapid heat-up and cool down cycles 

Heating turbine engine fan blades for welding

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