Note: Brazing a brass screw cap and a steel tube
Objective:
To heat a brass hex screw cap and a steel tube
End Product:
Brass steel assembly
Equipment:
Ambrell EKOHEAT 15 kW, 50 to 150 kHz induction heating system equipped with a remote workhead containing four 1.5 uf capacitors for a total of 1.5 uf A four-position, two-turn helical induction heating coil designed and developed specifically for this application
Materials:
Screw cap Steel tube Braze rings Flux
Temperature:
1400 °F (760 °C)
Frequency:
109 kHz
Testing:
White brazing flux was used on the parts. Samples were assembled using the braze rings, a batch of four samples were heated for 60 seconds, the braze flowed, and an aesthetically pleasing joint was created. The process met the client in s time objective of 15 seconds per part. A faster heating time is not recommended due to the limitations of thermal conduction of brass to the center of the part
Benefits:
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Speed: Induction enabled the brazing process to be completed at a rate of 15 seconds per part
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Consistency: Induction enables consistent joint quality, which a torch often doesn"t deliver
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Safety: There is no open flame with induction, so it"s a safer heating option than other options such as torch heating
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Efficiency: Induction delivers heat only where it"s required, making it more efficient than many competitive heating methods
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