Induction Bonding Aluminum & Carbon Fiber Coupons

Objective

To heat aluminum and carbon fiber coupons for a research firm.

End Product

Carbon Fiber Coupons

Equipment

Ambrell EASYHEAT 2.4 kW, 150-400 kHz solid state induction power supply with a workhead and coil specifically designed for this application

Materials

Aluminum and carbon fiber with adhesive in between.

Temperature

392 ° F (200 °C)

Frequency

272 kHz

Testing

Three custom-designed single position multiple-turn coils were built to generate the required heating for this bonding application (helical, pancake and u-shaped coils). Initial tests were conducted to optimize the power delivered to the part.

Temperature indicating paint was then applied to the part, which dissolves when the part reaches the target temperature. It took 3 minutes to heat the sample to temperature. 

Benefits

• Speed: Induction met the client’s time requirements.

• Repeatability: The client can expect the same result in the same amount of time every single time with induction heating.

• Footprint: Induction takes up a modest footprint compared to other heating methods, and the workhead can be placed away from the induction heating system.

• Safety: There is no open flame with induction heating.

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