induction heating graphite susceptor

Induction heating graphite susceptor for glass reflow for X-ray tubes Objective Heat graphite susceptor for glass reflow in the manufacturing of x-ray tubes Material Glass disc 0.98 x 0.12 “ (25 x 3mm), graphite susceptor, stainless steel holder, Glass bell jar 5.9” (150mm) OD Temperature 1742 ºF (950º C) Frequency 80 kHz Equipment • DW-HF-25kW induction heating system, equipped with a remote workhead containing eight 0.3 μF capacitors for a total of 2.4 μF • An induction heating coil designed and developed specifically for this application. Process A two turn helical coil is used for heating. Six graphite susceptors are placed in the nitrogen atmosphere with glass discs and a stainless steel holder. In 32 seconds the required temperature of 1742 ºF (950º C) is reached causing the glass to reflow & the stainless steel holder to melt through the glass. Results/Benefits Induction heating provides: • Increased production, customer currently heating 4 susceptors • 50% lower energy consummation • Even distribution of heating