Induction Hardening: Advantages, Disadvantages, and ...

What is the hardening cycle?

The components are heated to a temperature above the critical (normalizing) temperature, held there for one hour per inch of thickness, and then quickly cooled to enable the material to change into a much harder, stronger structure. Finally, tempering takes place. This is the complete hardening process.

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What type of steel is used for hardening?

The most common steel alloys used for through hardening are and high tensile alloys as they yield an optimal amount of strength and hardness.

What is the hardening temperature?

Hardening involves controlled heating to a critical temperature dictated by the type of steel.

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What is the purpose of annealing?

An annealing process is a type of heat treatment used primarily to make a material more malleable and less hard.

What steel can not be hardened?

Low-carbon steel is one such type of steel that has properties suitable for specific applications but cannot be hardened.

Induction hardening is a selective heat treatment that uses electromagnetic induction to generate heat inside the surface layer of a metal part. The quenched metal undergoes a martensitic transformation, increasing the hardness and brittleness of the part. Induction hardening is used to selectively harden areas of a part or assembly without affecting the properties of the part as a whole. This process is commonly used to increase the hardness and wear resistance of various metal components. Like any industrial process, induction hardening has its advantages and disadvantages.

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