Note: Braze electrical contacts to brass and copper bus
Objective:
Heat silver contacts and brass/copper bus for brazing application
End Product:
Electrical contacts
Equipment:
Ambrell 5 kW induction heating system, equipped with a remote workhead containing two 1.0 μF capacitors for a total of 0.5 μF An induction heating coil designed and developed specifically for this application.
Materials:
Silver contact .75 (19mm) diameter, brass and copper bus 2 inx 1 in (50.8 x 25.4mm), braze shims, white flux
Temperature:
1300 °F (704 °C)
Frequency:
320 kHz
Testing:
A five-turn split helical coil is used to heat the assembly. The parts are placed 90° to the coil between the top turn and second turn with braze shims and flux. The parts reach 1300 °F (704 °C) in less than 40 seconds to braze the parts together.
Benefits:
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Hands-free heating that involves no operator skill for manufacturing
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Better joint quality
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Faster heating cycles, more consistent results
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Even distribution of heating

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