Effect Of Scr420 Steel Plate Hot Rolling Process On Microstructure And Properties - China

The hot rolling process has an important influence on the structure and properties of SCr420 steel plate.

The following is a detailed introduction to several key aspects of the hot rolling process:

1 - Structural changes:

- Grain coarsening and refinement: During the hot rolling process, SCr420 steel plate undergoes plastic deformation at high temperature, resulting in recrystallization and refinement of the original grains; however, as the rolling temperature increases, excessive heating may lead to grain coarsening.

Therefore, it is crucial to control the hot rolling temperature.

- Phase transformation: SCr420 steel plate is an alloy steel.

During the hot rolling process, austenite (γ) in the structure may transform into phases such as pearlite and ferrite.

Different cooling rates and rolling processes will affect the final structural characteristics.

2 - Mechanical properties:

- Strength and toughness: After hot rolling, the yield strength and tensile strength of SCr420 steel plate are usually improved.

Reasonable rolling and cooling rates can enable the material to obtain an excellent balance between strength and toughness.

- Work hardening: During the hot rolling process, plastic deformation may cause the material to work harden, increasing its hardness and strength.

However, this may also reduce the toughness of the material to a certain extent.

Summary:

Hot rolling has a significant impact on the structure and properties of SCr420 steel plate.

By controlling the temperature, deformation thickness, rolling speed and cooling method during the rolling process, the performance of the material can be optimized to meet the application requirements.

Reasonable heat treatment process can also further improve its mechanical properties and service life.

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• Posted By: Dongguan Songshun Mould Steel Co., Ltd.

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