Induction Susceptor Heating

What is Susceptor Heating?

A susceptor is induction heated, conducting energy to the work material. Susceptors are made from silicon carbide, molybdenum, graphite, stainless steels and other conductive materials.

Induction generates an electromagnetic field in a work coil that induces currents in the conductive material of a workpiece placed within or near the coil. Friction from these currents elevates the temperature of the susceptor.

Induction susceptor heating Benefits 

  • Meets tight production tolerances with precise localized heat to small areas creating pinpoint accuracy

  • Increases production rates with faster heating cycles

  • Reduces defect rates with repeatable, reliable heat

  • Eliminates variability from operator-to-operator, shift-to-shift

  • Maintains metallurgical characteristics of the individual metals

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susceptor heating Application Notes

Select from our collection of susceptor heating notes, taken from years supporting our customers. Read how we helped to solve their process heating challenges.


image: Heating a 4 Tubular Carbon Susceptor to 5400 °F (3000 °C)Heating a 4 Tubular Carbon Susceptor to 5400 °F (3000 °C)

A tubular carbon susceptor is held within an atmospherecontrolled quartz chamber. Induction is used to heat the susceptor

image: Soldering Co-axial Wire to a Metal FrameSoldering Co-axial Wire to a Metal Frame

Given the small size of the part and the assembly's geometry, a graphite cylinder was required as a susceptor.

image: Heating graphite susceptor for glass reflow for X-ray tubesHeating graphite susceptor for glass reflow for X-ray tubes

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.

image: Heating aluminium susceptor for powder expansionHeating aluminium susceptor for powder expansion

Expand powder into solid form for use in crash helmets

image: Induction Melting Glass for Fiber DrawingInduction Melting Glass for Fiber Drawing

To heat a metal susceptor vessel to 2200°F within 25 minutes with induction for a fiberglass melting application

image: Brazing a heat-sensing probeBrazing a heat-sensing probe

A C-shaped steel susceptor is used to ensure even heating and for ease of loading and unloading the samples.

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