Detailed Introduction To Quenching

Quenching and tempering treatment usually refers to the quenching of steel and subsequent high-temperature tempering, which is a common process in steel heat treatment. The purpose is to improve the mechanical properties of metals through appropriate heat treatment processes, so that they have good comprehensive mechanical properties. The following is a detailed introduction to the combination of quenching and high-temperature tempering:

one

quench

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one

objective

Improving hardness and strength: By quenching, the austenite of steel is transformed into martensite, significantly increasing the hardness and strength of the material.

Formation of martensitic structure: Martensitic structure has high hardness and strength, but is relatively brittle.

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process

Heating: Heat the steel to the austenitizing temperature (usually between 750 ° C and 950 ° C) to completely transform its internal structure into austenite.

Rapid cooling: Rapidly cooling steel (usually in water, oil, or air) to transform austenite into martensite.

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result

Hardness improvement: The hardness of quenched steel is greatly increased, and it can withstand greater mechanical stress.

Brittle increase: Due to the presence of martensitic structure, quenched steel has poor toughness and is prone to brittle fracture.