Induction Annealing steel shaft

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Objective Heating a steel rod to 1200ºF (649ºC) for an annealing, stress relief application
Material 1.062” (26.97mm) dia type T-410 stainless steel bar 6’ (1.82m) long & 1.25” (31.75mm) dia T-416 stainless steel bar 6’ (1.82m) long
Temperature 1200ºF (649ºC)
Frequency 106 kHz
Equipment • 70kW induction heating system, equipped with a remote workhead containing eight 1.0 μF capacitors for a total of 8.0 μF
• An induction heating coil designed and developed specifically for this application.
Process A two position 8 turn helical parallel coil is used to heat the stainless steel rod for 30 seconds to reach the requested 1200ºF (649ºC).
Results/Benefits Induction heating benefits:
• Process currently done in batch furnaces, induction heating
allows process to be done in-line saving time and energy.
• No rotation of part needed
• Flameless process



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