With the growing demand for high-temperature environment operations in the global industrial field, heat-resistant steel is becoming an indispensable basic material for key industries such as energy, chemical industry, and metallurgy due to its excellent high-temperature resistance, corrosion resistance and high-strength characteristics. In recent years, the application scenarios of heat-resistant steel have continued to expand, and technological iterations have also promoted the upgrading of related industrial chains.
In the field of energy and power, heat-resistant steel is the core material for the manufacture of thermal power boilers, gas turbines and nuclear power equipment. Supercritical and ultra-supercritical units have higher requirements for the high-temperature resistance of boiler pipes. The new heat-resistant steel significantly improves the creep resistance of materials in environments above 600°C by optimizing the ratio of alloy elements such as chromium, molybdenum, and nickel, and extends the service life of the equipment. At the same time, the high-temperature stability requirements of the collector tubes in the solar thermal power generation system have further promoted the penetration of heat-resistant steel in the new energy field.
In the chemical industry, heat-resistant steel is widely used in high-temperature and high-pressure equipment such as hydrogenation reactors and cracking furnaces. The operating temperature of the ethylene cracking unit often reaches 800℃ to 1100℃. Heat-resistant steel improves the grain boundary strength by adding rare earth elements, effectively solving the oxidation and sulfidation corrosion problems of the material under extreme conditions. In addition, in the petroleum refining catalytic cracking unit, the application of heat-resistant steel lining significantly reduces the equipment maintenance cost.
The metallurgical and mechanical manufacturing fields also benefit from the technological progress of heat-resistant steel. After the slide rails and refractory support parts of the rolling furnace are made of heat-resistant steel, the thermal fatigue resistance is improved by more than 30%. Aerospace engine combustion chambers, automotive turbochargers and other components rely on heat-resistant steel to achieve a balance between lightweight and durability.
At present, heat-resistant steel is developing towards higher temperature grades and longer service life. With the breakthrough in the application of 3D printing technology in high-temperature alloy forming, the manufacturing efficiency of customized heat-resistant steel parts has been significantly improved. In the future, with the rise of emerging industries such as hydrogen energy and energy storage, the market demand for heat-resistant steel is expected to be further released, providing more reliable solutions for the global high-temperature industry.
