When brazing the electrical connections (joints) in motors and generators for the power generation, distribution and electrical apparatus industries, induction heating can be applied very effectively and with a high quality result. Some of the most common brazing applications for the rotating field are the joining of the rotor and exciter field coils.

The application of bushings or connector clips is no longer required. The parts to be joined are directly soldered or brazed together in a very short time. Induction heating for these applications allows the rapid localized heating of the workpieces and prevents damage to the insulation systems near the brazing points.

The common methods are really simple. The parts to be joined are aligned, and the solder or brazing alloy (mostly in the shape of a foil) is clamped between the parts. The co-axial transformer with inductor can be hand-held, connected to a fixture, or suspended from a balancer, and then easily positioned on the workpeice. The brazing process is started with a foot pedal or manual switch on the hand held, co-axial transformer.

Eldec Induction offers turn-key systems and solutions for your in-house or field production and repair requirements.
For other rotor field induction applications, see shrink fitting and removal and brazing short circuit ring (examples include: blower hubs, couplings, collector, and retaining rings / squirrel cage rotors).