Brazing Joining Copper Connectors With Induction

Brazing Joining Copper Connectors With Induction Objective: Brazing a joint between a copper lug and nickel plated copper pins on a pressurized heater connector. Material: 1.5” (38.1mm) dia heater connector in a ceramic insulator with L shaped copper lugs and nickel plated copper pins, silver solder and braze Temperature 1175-1375 ºF (635-746 ºC) Frequency 270 kHz Equipment • DW-UHF-10 kW induction heating system, equipped with a remote workhead containing two 1.5μF capacitors for a total of 0.75μF • An induction heating coil designed and developed specifically for this application. Process A two turn helical coil is used to heat the copper lugs and nickel plated copper pins for 1 minute. A clamp is used in production to hold the copper lugs in place for brazing. Results/Benefits Induction heating provides: • Minimal transfer of heat to adjacent ceramic insulator. • Hands-free heating that involves minimal operator skill for manufacturing. • Flameless processing. • Heat very small precise areas within production tolerances. • Even distribution of heating.