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Brazing of Copper Wires and Bus Bars

Home/Induction Heating Applications/Induction Brazing/Brazing of Copper Wires and Bus Bars
Brazing of Copper Wires and Bus Bars 2017-06-17T07:24:24+00:00

Induction brazing of copper wires and bus bars

Objective
Successfully braze copper wires to bus bars in under 20 seconds with induction heating.

Equipment
UPT-SB3/100
HSB-3 Heat Station
Custom coil

Materials
• Copper wire
• Bus bar
• Brazing alloy – CuP6

Test 1 – Wire to bar:
Key Parameters
Power: 2.4 kW
Temperature: Approximately 1292° F (700° C)
Frequency: 650 kHz
Time: 14-15 sec

Test 2 – Wire to wire :
Key Parameters

Power: 2.4 kW
Temperature: Approximately 1292° F (700° C)
Frequency: 650 kHz
Time: 4-5 sec

Process:

  1. A custom coil is made for the test.
  2. In both tests, the copper wires and bus bars are assembled.
  3. Brazing alloy is applied.
  4. Induction heating is applied to the piece.
  5. The brazing takes 14-15 sec for wire to bus brazing and takes 4-5 sec for wire to wire brazing.

 

Results/Benefits:
Induction heating provides:

  • Strong durable joints
  • Selective and precise heat zone, resulting in less part distortion and joint stress
  • Less oxidation
  • Faster heating cycles
  • More consistent results and suitability for large volume production, without the need for batch processing
  • Technology without pollution, which is both clean and safe

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