Induction Brazing Steel Wire With High Frequency Heating Brazer
Objective To heat a coil and a wire assembly to 1300ยฐF (704ยฐC) withinย 60 seconds for brazing.
Material Platinum coil, steel wire, braze paste
Temperature 1300ยฐF (704ยฐC)
Frequency 1000kHz
Equipment DW-UHF-4.5kW output, remote heat station containing oneย 1.2 microfarad capacitor, a specially-designed induction coil,ย an optical pyrometer, stainless steel susceptor, and zirconia
felt to house the susceptor.
Process A C-shaped steel susceptor is used to ensure even heatingย and for ease of loading and unloading the samples. RF powerย from the power supply heats the susceptor to the requiredย temperature of 1700ยฐF (926ยฐC) in 45 seconds. After brazeย paste is applied to the wire assembly, the assembly is placed
inside the susceptor. It takes 3.5 seconds to heat the wire toย the optimum brazing temperature of 1300ยฐF (704ยฐC) and theย braze paste flows evenly and consistently.
Results/Benefits Induction heating provides:
โข Fast, accurate, repeatable heat
โข Ability to heat very small areas within precise productionย tolerances
โข Better joint quality, reduced oxidation