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

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Have more technical questions?  Contact a TMT engineer here.