Note: Annealing Brazing Wire

Objective:

Anneal a brazing wire for preform production.

End Product:

Brazing Wire

Equipment:

  • Ambrell 3 kW induction heating system equipped with a remote workhead with one 1.0 μF capacitor, and a 4-20 mA input controller to aid in voltage ramping.
  • An induction heating coil designed and developed specifically for this application.

Materials:

Copper Nickel Silver 2774 Alloy rod 0.070 in (1.8mm) diameter.

Temperature:

650 °F (343.3 °C)

Frequency:

281 kHz

Testing:

A unique helical coil consisting of four consecutive coils connected in parallel with a quartz tube lining is used to heat the wire to 650 °F (343.3 °C) for annealing.

Benefits:

Induction heating provides:

  • Higher productivity of 27" (8.2m) per minute

  • Reduction in surface oxidation & scaling

  • Consistent, repeatable results

Annealing Brazing Wire

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