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Factors affecting the quality of flame quenching of weathering plate surface heat treatment
Surface heat treatment of weathering plate can improve the processing performance of steel; improve its performance; significantly improve the mechanical properties of steel; and extend its service life.
May 21,2024
Factors affecting the quality of flame quenching of surface heat treatment of weathering plate
Surface heat treatment of weathering plate can improve the processing performance of steel; improve its performance; significantly improve the mechanical properties of steel; and extend its service life. The quality of flame surface quenching in surface heat treatment is affected by the following factors:
1. Relative movement speed between nozzle and workpiece: adjust the relative movement speed according to the requirements of the thickness of the hardened layer of the workpiece. If the Cui Ying is deep, the speed will be slow, and if the hardened layer is thin, the speed will be fast.
Factors affecting the quality of flame quenching of surface heat treatment of weathering plate
2. Distance between nozzle and flame: The distance between nozzle and flame should be kept at about 1 mm. Too far or too close will affect the quenching quality;
3. Cooling water temperature: The water temperature should not be too low to avoid cracks; and it should be tempered in time, and the tempering temperature is generally around 180℃.
Flame surface quenching in surface heat treatment is not limited by the volume of the workpiece and can be used flexibly. After quenching, the surface is clean, not easy to oxidize, and has small deformation. Suitable for weathering plates and medium carbon alloy steel parts produced in single batches or small batches.
Heat treatment is a form of production in my country's industrial production and plays an important role in heavy industrial production. So, let's take a look at the principle of heat treatment.
Heat treatment is the process of heating, maintaining and cooling solid steel in an appropriate manner to obtain the desired structure and performance. The characteristic of heat treatment is to change the internal structure of parts or blanks without changing their shape and size. In most cases, the heating of heat treatment is to heat the weathering plate to a high temperature so that the internal structure is transformed into austenite, and the heating process is also the process of austenite formation.
Material that can be strengthened by heat treatment should meet the requirements of solid phase transformation; after cold working, the microstructure is in a thermodynamically unstable state; the surface can be penetrated by atoms of the active medium to change the surface chemical composition.
The general production process can also be understood from the principle of heat treatment, so that the changes in different stages can be intuitively understood for better adjustment.
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