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    • How We Heat Treat
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    • Age Hardening
    • Annealing
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    • Carbonitriding
    • Carburizing
    • Induction
    • Large Capacity
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Thermal Modification Technologies
  • Home
  • About TMT
    • Who We Are
    • How We Heat Treat
  • HT Processes
    • Age Hardening
    • Annealing
    • Auxiliary Processes
    • Carbonitriding
    • Carburizing
    • Induction
    • Large Capacity
    • Normalizing
    • Plasma Nitriding
    • Post Weld Heat Treat
    • Solution Annealing
    • Stress Relieving
    • Through Hardening
    • Need Guidance?
  • Quality
  • Contact Us

Induction

Induction Heat Treating is the process in which a part is placed inside a copper coil and heated by a high-frequency alternating current and then quenched.  Parts can be softened or hardened by this technique.
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Industries
  • Gears
  • Shafts
  • Pins
  • Sprockets
  • Hubs
Related Processes
Carburizing
Carbonitriding
Plasma Nitriding
Common Alloys
  • Low Alloy Carbon Steels e.g. 1040, 1045, 1141, 1050
  • Medium Carbon Alloy Steels e.g. 4140, 4142, 4340, 8640
  • Tool Steels e.g. O1, H13
  • Ductile Iron
  • Slow Cooled Carburized Parts
TMT Equipment/Variations
The two main types of induction equipment are single shot and scanning machines.  A single shot machine will have a stationary setup with a coil matched to the desired area of the part to harden.  The part will be heated and then placed into a quench tank.  A scanning machine will move the part relative to the coil to progressively heat and quench the part.  TMT has in-house coil manufacturing capabilities to tailor the process to your parts.
Applications
  • Induction heat treating is frequently used to harden select areas of a part, such as only the teeth on a sprocket or only a certain length of a a shaft.  This allows for higher hardness in select areas while retaining the original properties in the rest of the part.  It can also be used to selectively soften previously hardened components.
  • Induction heat treating can be tailored to harden a certain depth of material.  This is often used for pins and shafts to create a hard, wear-resistant outer layer while maintaining core toughness.
  • Induction heat treating is very similar to flame treating and can be used achieve very similar results.
What To Consider When Specifying
  • ​Surface Hardness
  • Areas to be Hardened
  • Material

Have more technical questions?  Contact a TMT engineer here.
Thermal Modification Technologies | 19830 SW Teton Ave., Tualatin, OR 97062 | Phone: 503.654.6511 | Fax 503.653.1217
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  • Home
  • About TMT
    • Who We Are
    • How We Heat Treat
  • HT Processes
    • Age Hardening
    • Annealing
    • Auxiliary Processes
    • Carbonitriding
    • Carburizing
    • Induction
    • Large Capacity
    • Normalizing
    • Plasma Nitriding
    • Post Weld Heat Treat
    • Solution Annealing
    • Stress Relieving
    • Through Hardening
    • Need Guidance?
  • Quality
  • Contact Us