Low Frequency Hardening

Bluewater Thermal Solutions low frequency hardening technique is a special induction hardening application our technicians can use to apply and obtain substantially different hardness patterns in most steel parts and components. Other parameters that affect the low frequency hardening process are power density and time spent heating the component. We typically utilize low frequency induction hardening for induction heating requests that involve deeper hardening because lower frequencies result in greater eddy current penetration depths which in turn, lead to a more in-depth preheating effect. This happens because frequency attenuation causes the eddy current to follow the path of least resistance into the material. Low frequency ranges are typically below 100 kHz.  Most importantly, if your specifications require a deep penetration depth and high hardness then Bluewater’s low frequency induction hardening method will accomplish those needs.


Low Frequency Hardening Properties

  • Rapid, clean, non-polluting
  • Can handle small and large capacity jobs
  • Minimum shape distortion
  • High quality parts with consistent case depths
  • Lower cost parts with increased load carrying capacity
  • Components treated with a minimum exposure to heat and require minimum to no post grinding
  • Low Frequency affects deep penetration depths and hardened depths

Low Frequency Hardening Applications

  • Gears
  • Sprockets
  • Pins
  • Bushings
  • Track Pads
  • Rollers
  • Bearings
  • Automotive components
  • Large gears and bearing braces for items like wind turbines
  • CV-Joints

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