How does the material selection of burner accessories affect its high temperature resistance?
Publish Time: 2025-03-11
As a key device for heat energy conversion, the material selection of burner accessories is directly related to the performance, service life and operation safety of the burner. During the combustion process, accessories must not only withstand the scorching of high-temperature flames, but also face complex and changeable combustion environments. Therefore, high temperature resistance and corrosion resistance become important criteria for measuring the quality of burner accessories.
The high temperature resistance of burner accessories mainly depends on the thermal stability and thermal conductivity of their materials. In high temperature environments, the thermal expansion coefficient, melting point, oxidation resistance and other characteristics of the material are particularly important. For example, stainless steel has become one of the commonly used materials in burner accessories due to its excellent high temperature resistance, oxidation resistance and corrosion resistance. Stainless steel is not easy to deform at high temperatures, and can maintain good mechanical strength and stability, ensuring that the burner can still work normally in high temperature environments.
Materials such as red copper and nickel alloys are used as manufacturing materials for burner accessories in certain specific occasions due to their higher high temperature resistance. The maximum tolerance temperature of red copper can reach 1200℃, with excellent thermal conductivity and corrosion resistance, and can withstand extremely high temperature combustion environments. Nickel alloys are widely used in high-temperature parts of burners due to their good high-temperature strength and corrosion resistance.
In addition to high-temperature resistance, corrosion resistance is also a factor that cannot be ignored in the selection of materials for burner accessories. During the combustion process, corrosive gases and particulate matter produced by fuel combustion will erode accessories, affecting the service life and performance of accessories. Therefore, choosing materials with good corrosion resistance is crucial to extending the service life of burner accessories.
Stainless steel has become the preferred material for burner accessories due to its excellent corrosion resistance. The chromium element in stainless steel can form a dense oxide film to protect the material from erosion by corrosive media. In addition, although aluminum alloys have good thermal conductivity, their corrosion resistance is relatively poor, and they usually need special anti-corrosion treatment before they can be used in the manufacture of burner accessories.
New materials such as silicon carbide are also gradually emerging in the manufacture of burner accessories due to their excellent high-temperature and corrosion resistance. Silicon carbide materials have the characteristics of good thermal shock resistance and stable mechanical properties of materials under high-temperature conditions. They can be used stably in high-temperature and corrosive environments for a long time and are suitable for the manufacture of key components such as burner nozzles and combustion chamber inner walls.
In summary, the material selection of burner accessories has an important impact on their high temperature resistance and corrosion resistance. In material selection, the actual working environment, performance requirements and economic costs of the burner should be comprehensively considered, and materials with excellent high temperature resistance and corrosion resistance should be selected to ensure that the burner accessories can still maintain good working performance and service life in high temperature and corrosive environments. At the same time, with the continuous development of materials science, the continuous emergence of new high temperature resistant and corrosion resistant materials will provide more possibilities for the material selection of burner accessories.
