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" (1.8mm) diameter.

Temperature

650ºF (343.3ºC)

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 650ºF (343.3ºC) for annealing.

Benefits

Induction heating provides:

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

• Reduction in surface oxidation & scaling

• Consistent, repeatable results

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