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What are the characteristics and roles of hardening, tempering, annealing, and normalizing?

Introducing four basic patterns of heat treatment that bring out the properties of iron in a blog!

There are four main methods of heat treatment. The toughness I mentioned last time is imparted by performing "tempering." It is often said "quenching and tempering," and it is common to carry out these processes together to give steel surface hardness and toughness. Annealing and normalizing are not frequently used in the processing we mainly handle, but the photo of the handle at the beginning shows that annealing was performed to soften the iron and bend it. The root part of the bend has undergone annealing. Without annealing, it would be hard, and cracks would occur during bending, or it would break. *You can view the detailed content of the blog through the related links. For more information, please download the PDF or feel free to contact us.*

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