Factors affecting the quality of heat treatment flame quenching on the surface of weathering plate?

Factors affecting the quality of heat treatment flame quenching on the surface of weathering plate?

Factors affecting the quality of flame quenching in heat treatment of weathering plate surface
The surface heat treatment of weatherproof plate can improve the machining 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 motion speed between the nozzle and the workpiece: Adjust the relative motion speed according to the requirements of the hardening layer thickness of the workpiece. If the Cui Ying is deep, the speed will be slow, if the hardening layer is thin, the speed will be fast.
Factors affecting the quality of flame quenching in heat treatment of weathering plate surface
2. The distance between the nozzle and the flame: the distance between the nozzle and the flame should be maintained at about 1 mm, too far or too close will affect the quenching quality;
3. Cooling water temperature: water temperature should not be too low to avoid cracks; And should be tempered in time, tempering temperature is generally about 180 ° C.
The 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 the deformation is small. Suitable for single or small batch production of weathering plate and medium carbon alloy steel parts.
Heat treatment is a kind of production form in China's industrial production and plays an important role in heavy industry production. So, we can look at the principle of heat treatment.
Heat treatment is the process of heating, holding and cooling solid steel in an appropriate manner to obtain the desired structure and properties. Heat treatment is characterized by changing the internal structure of the part or blank without changing its shape and size. In most cases, the heating of the heat treatment is to heat the weathering plate to a high temperature, so that the internal organization is transformed into austenite, and the heating process is also the process of austenite formation.
Materials that can be strengthened by heat treatment should meet the requirements of solid phase transition; After cold working, the microstructure was in thermodynamic unstable state. The surface can be penetrated by atoms of the active medium, changing the chemical composition of the surface.
From the principle of heat treatment can also understand the general production process, so that you can intuitively understand the changes in different stages, in order to better adjust.
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