Note: Annealing brass electrical contact for crimping

Objective:

To anneal a small area of an electrical contact for crimping 

End Product:

Female spade contact

Equipment:

  • Ambrell 10 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:

Brass female spade electrical contact with single transverse loop at end 0.5 in (12.7 mm) long, 0.25 in (6.3 mm) wide and 0.03 in (0.8 mm) thick, 1000 °F (538 °C) heat paint

Temperature:

1000 °F (538 °C)

Frequency:

310 kHz

Testing:

A one turn hairpin coil is used to heat the electrical contact to 1000 °F (538 °C) in 1.5 seconds. The contacts are in strips at 0.75 in (19 mm) centers and will run continuously at a rate of 50 in (15.24 m) per minute.

Benefits:

Induction heating provides:

  • Hands-free heating that involves no operator skill for manufacturing

  • Pinpoint accuracy

  • Consistent results

Annealing brass electrical contact for crimping

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