Note: De-Carburizing Jet Engine Fuel Nozzle
Objective:
Heat a jet engine fuel nozzle to 1400 °F (760 °C) in order to decarburize it.
End Product:
Fuel nozzle
Equipment:
Ambrell 3.5 kW induction heating system equipped with a remote workhead containing two capacitors totaling 0.66 μF
An induction heating coil designed and developed specifically for this application.
Materials:
Inconel 604 Jet Engine Fuel Nozzle measuring 15 in (381 mm) long and 1/4 in (6.35 mm) in diameter.
Temperature:
1400 °F (760 °C)
Frequency:
165 kHz
Testing:
An 18-turn oval coil is used to heat the lower 8.5 in (216 mm) of the fuel nozzle assembly. Power is applied and temperature is reached in 15 seconds. Temperature is
maintained for 10-20 minutes while 5 psi of air is blown through the nozzle to dislodge the carbon material.
Benefits:
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Controllable and uniform application of heat
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Faster cycle times
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Repeatable results
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