Commonly used heat treatment methods

The heat treatment of steel is divided into three categories.

Integral heat treatment (including annealing, normalizing, quenching, quenching + tempering, tempering and others).

Surface heat treatment (including surface quenching and tempering, etc.)

chemical heat treatment (including carburizing, nitriding, carburizing, carburizing, carburizing, carburizing, other non-metals, carburizing, polycarburizing, carburizing).

All heat treatment consists of three stages: heat preservation and cooling.

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