What are the requirements for high-temperature alloys in the industrial field?

High temperature alloys, as a type of metal material that can work for a long time under high temperature and certain stress, play a crucial role in modern industrial systems due to their excellent properties such as high temperature resistance, oxidation resistance, corrosion resistance, and high strength. Especially in many industrial fields, the application of high-temperature alloys has become a key factor in ensuring efficient and stable operation of equipment. ​

In the energy and power industry, the ultra supercritical units of thermal power generation continuously increase their steam parameters to improve power generation efficiency. The superheater, reheater and other components of the boiler need to be exposed to high temperature, high pressure and corrosive steam environment for a long time. At this point, ordinary steel cannot meet the demand, while nickel based high-temperature alloys have become ideal materials for manufacturing these components due to their excellent creep resistance, good high-temperature strength, oxidation resistance on the steam side, and corrosion resistance on the flue gas side. Similarly, in gas turbine power generation, turbine blades and guide vanes must withstand the erosion of extremely high temperature gas. High temperature alloys can ensure that the blades maintain structural integrity and good aerodynamic performance under such harsh conditions, ensuring efficient and stable operation of the gas turbine. In the field of nuclear power, the heat transfer tubes of steam generators need to work in environments with high temperature, high pressure, and radioactive media. The excellent corrosion resistance of high-temperature alloys can effectively prevent the leakage of radioactive substances and ensure the safe operation of nuclear power plants. ​

In the petrochemical industry, many production processes are carried out in high temperature, high pressure, and highly corrosive environments. Like an ethylene cracking furnace, the furnace tubes need to withstand the corrosion and erosion of hydrocarbon raw materials at extremely high temperatures. The use of high-temperature alloy furnace tubes containing elements such as chromium and nickel can significantly improve their high temperature resistance and corrosion resistance, extend their service life, reduce equipment maintenance and replacement frequency, and ensure the continuity of ethylene production. In the hydrogenation reactor of the refining unit, the interior is in a high-temperature and high-pressure environment, and there are corrosive media such as hydrogen and hydrogen sulfide present. The reactor made of high-temperature alloy can effectively resist hydrogen corrosion and hydrogen sulfide corrosion, ensuring the safe and reliable operation of the equipment. ​

In the metallurgical industry, high-temperature alloys are widely used in components such as the crystallizer copper plate of continuous casting machines and the bottom rollers of heating furnaces. The copper plate of the crystallizer needs to maintain good thermal conductivity and thermal fatigue resistance under the thermal shock of high-temperature molten steel. High temperature alloys can meet this requirement and ensure the quality of the cast billet. The bottom roller of the heating furnace works in an environment of high temperature, oxidation, and steel billet friction for a long time. The bottom roller made of high-temperature alloy material has high hardness, wear resistance, and oxidation resistance, which can reduce roller surface nodules, improve the service life of the bottom roller, and reduce production costs. ​

In the glass manufacturing industry, the centrifugal head used to produce glass wool needs to withstand the scouring and erosion of glass liquid under high temperature and high-speed rotation. The free core made of high-temperature alloy has high hardness, wear resistance, and thermal shock resistance, ensuring efficient and stable production of glass wool. The high-temperature alloy material used in the tin bath of flat glass production needs to work in a corrosive environment of high temperature and tin solution. Its good corrosion resistance and high-temperature strength ensure the long service life of tin bath components, which is of great significance for improving the quality and production efficiency of flat glass. ​

The industrial sector has a wide and strict demand for high-temperature alloys. With the continuous advancement of industrial technology, the requirements for the performance of high-temperature alloys will continue to increase, driving continuous innovation and development of high-temperature alloy materials to meet the growing demands of various industrial fields.