1. Aerospace field

my country's development of independent aerospace industry to develop advanced engines will increase market demand for high-end and new high-temperature alloys.

Aviation engines are known as the "flower of industry" and are one of the most technical and difficult components in the aviation industry. As an aircraft power plant, it is particularly important for metal structural materials to have properties such as light weight, high strength, high toughness, high temperature resistance, oxidation resistance, and corrosion resistance. This is almost the highest performance requirement among structural materials.

High temperature alloys are metal materials that can work above 600°C and under certain stress conditions for a long time. High-temperature alloys were developed to meet the stringent material requirements of modern aerospace engines, and have become an irreplaceable key material for hot-end components of aerospace engines. At present, in advanced aerospace engines, the proportion of high-temperature alloys used has reached more than 50%.

In modern advanced aerospace engines, the amount of high-temperature alloy materials accounts for 40% to 60% of the total engine volume. In aeroengines, high-temperature alloys are mainly used in the four hot-section components of combustion chambers, guide vanes, turbine blades and turbine disks; in addition, they are also used in components such as casings, rings, afterburners and tail nozzles.

2. Energy field

High temperature alloys are widely used in the energy field. In high-parameter ultra-supercritical power generation boilers for coal and electricity, the superheater and reheater 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 turbines, turbine blades and guide vanes need to use high-temperature corrosion-resistant superalloys with excellent high-temperature corrosion resistance and long-term structural stability; 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 fields of gasification and energy conservation and emission reduction, high-temperature alloys with excellent resistance to high-temperature hot corrosion and high-temperature abrasion are widely used; in oil and natural gas mining, especially deep well mining, drilling tools are in an acidic environment of 4-150°C. In addition, In 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 in production scale and production technology in recent years, driving the demand for turbine disks for power generation equipment . The new generation of power generation equipment that is being developed locally - large ground gas turbines (which can also be used as ship power) has made significant progress and will drive demand for high-temperature alloys after mass production. At the same time, the localization of nuclear power equipment will also drive demand for domestic high-temperature alloys.