In the heat treatment process, the choice of material for the basket is crucial, especially when the processing temperature is up to 1200 °C. In order to meet this stringent temperature requirement, heat-resistant steel is the material of choice. Heat-resistant steel is a special alloy steel that significantly improves its oxidation resistance, creep strength and corrosion resistance at high temperatures by adding alloying elements such as chromium, nickel, and tungsten.
Among the many heat-resistant steel materials, austenitic heat-resistant steel stands out for its excellent high-temperature resistance. This type of steel can still maintain high mechanical properties and stability under 1200, and is not easy to deform or break. In addition, austenitic heat-resistant steel also has good oxidation resistance, which can form a dense oxide film at high temperatures, which effectively prevents further oxidation and corrosion of the metal.
In addition to austenitic heat-resistant steels, some ferritic heat-resistant steels and martensitic heat-resistant steels also have good high-temperature resistance. However, they may perform slightly worse than austenitic heat-resistant steels at 1200, so the choice is based on specific process requirements and cost considerations.
In summary, in order to ensure the long-term stable operation of the heat-treated basket at 1200 °C, it is recommended to use austenitic heat-resistant steel as the manufacturing material. This material not only has excellent high temperature resistance, but also provides sufficient strength and corrosion resistance to provide a strong guarantee for the efficient and safe operation of heat treatment processes.