Oxidation of ring forgings is easy to occur under high temperature conditions, which leads to the degradation of material properties and the shortening of life. In order to improve the high-temperature oxidation resistance of ring forgings, the following measures can be taken:
- Select suitable high temperature oxidation resistant materials: select materials with high temperature oxidation resistance, such as superalloy, heat-resistant stainless steel, etc. These materials have good high temperature stability and oxidation resistance, and can better resist the erosion of high temperature oxidation.
- Surface coating protection: coating the surface of the ring forgings with a layer of high temperature oxidation resistant protective coating, such as alumina, silicon carbide, etc. These coatings can form a stable oxide layer, block oxygen and high temperature gas erosion of the material, and improve the high temperature oxidation resistance of ring forgings.
- Add appropriate alloying elements: By adding some appropriate alloying elements, such as chromium, aluminum, etc., you can increase the high temperature oxidation resistance of ring forging materials. These alloying elements combine with oxygen to form a stable oxide layer that prevents the oxidation reaction from proceeding.
- Control the atmosphere in a high temperature environment: In a high temperature environment, controlling the partial pressure of oxygen and controlling the composition of the atmosphere can slow down or prevent the oxidation reaction of ring forging materials. For example, under some special process conditions, an inert atmosphere can be used, such as hydrogen, nitrogen, etc., to reduce the erosion of oxygen on ring forgings.
- Fine heat treatment: Through a reasonable heat treatment process, the grain boundary structure and organization of ring forging materials are homogenized, eliminating or reducing regional differences, so as to improve the high temperature oxidation resistance of the material.
- Strengthen cooling measures: In the high temperature environment, by strengthening cooling measures, reduce the working temperature of ring forgings, slow down the high temperature oxidation rate of materials, and extend the service life of ring forgings.
In summary, through the selection of appropriate materials, surface coating protection, alloying element addition, atmosphere control, fine heat treatment and strengthening cooling measures, the high temperature oxidation resistance of ring forgings can be effectively improved to ensure its normal operation and service life in a high temperature environment.
