Aeroengine steel refers to the steel specially used for the manufacture of key components of aeroengines, including compressor blades, turbine blades, discs, bearings, housings, etc. Due to the extreme working environment of aircraft engines, the steel is required to have extremely high strength, good heat resistance, corrosion resistance and fatigue resistance.
Aircraft engine steel is mainly divided into the following categories:
1. High temperature alloy steel: This type of steel contains elements such as nickel, chromium and cobalt, which can maintain strength and toughness at high temperatures, and is suitable for manufacturing turbine blades and other high-temperature components.
2. Stainless steel: with good corrosion resistance and high strength, it is often used to manufacture some shell and structural components of the engine.
3. Maraging steel: high strength and good toughness can be obtained through heat treatment, suitable for manufacturing engine gear and bearings and other components.
4 Titanium alloy: although not steel, but because of its low density, high strength, good corrosion resistance, often used in the manufacture of engine compressor blades and some structural components.
5. Powder metallurgy steel: Steel made by powder metallurgy process, with uniform organizational structure, suitable for the manufacture of complex shapes of precision parts.
Aircraft engine steel in the production process will undergo strict quality control, including chemical composition analysis, mechanical properties testing, non-destructive testing, etc., to ensure that it meets the design requirements and safety standards. With the development of aviation technology, the performance requirements for aeroengine steel are also constantly improving, which promotes the continuous progress of material science and engineering technology.
