Induction Brazing stainless steel dental assembly

Objective To heat a steel dental assembly to 1400ºF (760ºC) for brazing
Material Stainless steel plates 0.118” (3mm) square and 0.078” (2mm) high, stainless steel hook, mesh, two pieces of graphite 0.375”(9.5mm) square cross section, 4” (101.6mm) long and white flux for brazing
Temperature 1400ºF (760ºC)
Frequency 216 kHz
Equipment • Power of 6 kW induction heating system, equipped with a remote workhead containing two 0.33μF capacitors for a total of 0.66 μF
• An induction heating coil designed and developed specifically for this application.
Process A two turn oblong helical coil is designed to heat the steel brackets which are sandwiched between the two pieces of graphite. The heat will be transferred from the graphite to the steel bracket assemblies to reach 1400ºF (760ºC) in 120 seconds. There is a cool down time of 30-50 seconds before the steel can be removed from the graphite sandwich.
Results/Benefits Induction heating provides:
• Braze flow is consistent and controllable by using braze pieces
• Hands-free heating that involves no operator skill for manufacturing
• Even distribution of heating