High-temperature-resistant seamless deformed steel and preparation technology thereof

Abstract

The invention discloses high-temperature-resistant seamless deformed steel and a preparation technology thereof. The high-temperature-resistant seamless deformed steel comprises the following chemical elements in parts by mass: 150 to 780 parts of iron, 15 to 65 parts of copper, 13 to 28 parts of aluminium, 1 to 9 parts of carbon, 0.05 to 0.28 part of titanium, 0.03 to 0.07 part of silver, 0.02 to 0.68 part of sulfur, 0.01 to 0.07 part of phosphorus, 0.015 to 0.055 part of boron, 0.01 to 0.045 part of hafnium, 0.02 to 0.055 part of tantalum, 0.025 to 0.05 part of niobium, 0.005 to 0.015 part of bismuth and 0.015 to 0.03 part of erbium. The preparation method comprises the following steps: heating by a heating furnace at 800 to 1,200 DEG C; then carrying out quenching treatment by a quenching device; carrying out tempering by a heating furnace at 400 to 700 DEG C; then cooling; finally, carrying out surface treatment. By the mode, the high-temperature resistance of the high-temperature-resistant seamless deformed steel disclosed by the invention can be improved and the high-temperature-resistant seamless deformed steel has high structural intensity and adopts a simple production technology.

Description

technical field [0001] The invention relates to the field of special-shaped steel, in particular to a high-temperature-resistant seamless special-shaped steel and a preparation process thereof. Background technique [0002] The production of seamless steel pipes is one of the pillar industries of the country. With the development of the national economy, the demand for seamless steel pipes is increasing year by year. Seamless steel pipes are used to manufacture structural components such as automobiles, trains, airplanes, ships, and space launchers, as well as mechanical parts such as agriculture, mining, engineering, electrical engineering, textiles, and military industries. Seamless steel pipes are used in both civil and military fields. are very broad. In a complex environment, special-shaped steel needs to have the characteristics of high strength, temperature difference resistance, long service life and excellent comprehensive performance. However, the materials curre...

AI Technical Summary

Problems solved by technology

However, the materials currently used to manufacture special-shaped steel have low strength, limited toughness, and low comprehensive performance, resulting in small load-bearing capacity, poor earthquake resistance, and low bending and torsion resistance of fire-fighting equipment.