Main application
1. Aerospace
The development of my country's independent aerospace industry to develop advanced engines will increase the market's demand for high-end and new superalloys.
The aero engine is called 'the flower of industry', and it is one of the most technical and difficult parts in the aviation industry. As the aero engine of the aircraft power plant, it is particularly important that the metal structural material has the properties of light weight, high strength, high toughness, high temperature resistance, oxidation resistance, and corrosion resistance. This is almost the highest performance requirement among structural materials.
Superalloys are metal materials that can work for a long time under a certain stress and above 600℃. High-temperature alloys are developed to meet the demanding requirements of modern aero-engines, and have become an irreplaceable key material for the hot-end parts of aero-engines. In advanced aero-engines, the proportion of superalloys used has reached more than 50%.
In modern advanced aero-engines, the amount of superalloy materials accounts for 40% to 60% of the total number of engines. In aero-engines, high-temperature alloys are mainly used in the four hot sections of combustion chambers, guide blades, turbine blades and turbine discs; in addition, they are also used in parts such as casings, rings, afterburners, and tail nozzles.
2. Energy field
Superalloys have a wide range of applications in the energy field. In the high-parameter ultra-supercritical power generation boiler for coal power, the superheater and re-superheater must use high-temperature alloy pipes with good creep resistance, oxidation resistance on the steam side and corrosion resistance on the flue gas side; in gas and power applications In gas turbines, turbine blades and guide blades need to use high temperature corrosion resistant high temperature alloys with excellent high temperature corrosion resistance and long-term stable organization; in the field of nuclear power, steam generator heat transfer tubes must use high temperature alloys with good solution corrosion resistance; in coal In the field of gasification and energy saving and emission reduction, high temperature alloys with excellent resistance to high temperature thermal corrosion and high temperature abrasion resistance are widely used; in oil and natural gas exploitation, especially in deep well exploitation, the drilling tools are in an acidic environment of 4-150 ℃, and For the presence of CO2, H2S and sediment, corrosion-resistant and wear-resistant high-temperature alloys must be used.
My country's Shanghai Electric, Dongfang Electric, Harbin Steam Turbine Factory and other large power generation equipment manufacturing groups have greatly improved their production scale and production technology in recent years, which has stimulated the demand for turbine disks for power generation equipment. Significant progress has been made in a new generation of power generation equipment-large ground gas turbines (which can also be used as ship power), which is being domestically developed. The realization of mass production will drive the demand for superalloys. At the same time, the localization of nuclear power equipment will also stimulate the demand for domestic superalloys.