Brazing Copper Tube with Induction

Brazing Copper Tube with Induction Objective: To braze a copper tube ( 3/8" OD by 2-4" long) into a 3/8" fitting in less than 10 seconds. Heating must take place in a channel type coil to allow for easy loading of parts. Material Copper Tubing and Fitting with Braze and Stay Silv White Flux Temperature 1300°F Frequency 215 kHz Equipment DW-UHF-10kw output solid state induction power supply equipped with a standard heat station containing eight 0.33 μF capacitors for a total of 0.66μF, a step down transformer, and a specifically designed induction heating coil. Process DW-UHF-10kw solid state induction power supply was setup to achieve the following results: · 2.0 kW of power was directly loaded into the copper tube resulting in a heating time of 7.2 seconds to reach the necessary 13000F for brazing. Results& Processing ease was achieved through the design of a unique channel type coil comprised of three turns of 1/8" copper.