Brazing Copper Bars with Induction

Brazing Copper Bars with Induction Objective: To braze bus bar assemblies together Material: • 2 copper bus bars 6" (152.4mm) wide, 2' (609.6mm)long, 2 copper bars 6"(152.4mm) wide, 18" (457.2)long & 3/8" (9.65mm) thick • braze shim preforms and white flux Temperature: 1292 ºF (700 ºC) Frequency: 80 kHz Equipment • DW-UHF-60KW induction heating system, equipped with a remote workhead containing eight 1.0 μF capacitors for a total of 2.0 μF. • An induction heating coil, designed and developed specifically for this application Process: A three-turn helical coil is used to heat the assembly. Three braze shim preforms are placed between the plates and white flux is applied to the assembly. It is heated for 5 minutes to evenly flow the braze alloy. A high current capable, aesthetic looking braze zone is produced. Results/Benefits Induction heating provides: • Consistently produced, quality parts • Heat into the part that is divided equally between the copper pieces, allowing for even flow and consistent use of braze • Hands-free operation that doesn't require skilled operators