Induction Hardening Gears Teeth With High Frequency Heating System
Objective Heat the teeth of a soft steel seatbelt retraction gear to 1700°F (926.7ºC) within two seconds for hardening.
Material #4130 steel seatbelt retraction gears, water vortex quenching tank, electronically controlled air valves, adjustable timers
Temperature 1700 °F(926.7ºC)
Frequency 200 kHz
Equipment • DW-UHF-10kW induction heating system equipped with a remote workhead with 1.0 μF capacitance
• An induction heating coil designed and developed specifically for this application.
Process A four-turn helical concentrating coil is specially designed to deliver uniform heat to the steel seatbelt retraction gear. The parts are positioned in the coil above the quenching tank and held in place with a vacuum rosette fixture. Power is applied for two seconds to heat the part. The parts are then expelled into the quench tank for cooling.
Results/Benefits Induction heating provides:
• Uniform and repeatable results
• Energy efficient
• Non-contact heating