42CrMo seamless steel pipe is an important industrial material, widely used in petroleum, chemical industry, natural gas transportation, and other fields. 42CrMo seamless steel pipes implement the standards GB/T8162 seamless steel pipes for structures, GB/T8163 seamless steel pipes for fluid transportation, GB/T18248 seamless steel pipes for gas cylinders, and GB/T28884 seamless steel pipes for large-volume gas cylinders.
①Chemical composition: Carbon C: 0.38~0.45%, Silicon Si: 0.17~0.37%, Manganese Mn: 0.50~0.80%, Sulfur S: Allowable residual content ≤0.035%, Phosphorus P: Allowable residual content ≤0.035%, Chromium Cr: 0.90~1.20%, Nickel Ni: Allowable residual content ≤0.30%, Copper Cu: Allowable residual content ≤0.30%, Molybdenum Mo: 0.15~0.25%,
②Product specifications: Outer diameter 57mm~762mm, wall thickness 3.0~120mm,
③42CrMo mechanical properties: Tensile strength σb (MPa): ≥1080(110), Yield strength σs (MPa): ≥930(95), Elongation δ5 (%): ≥12, Sectional reduction ψ (%): ≥45, Impact energy Akv (J): ≥63, Impact toughness value αkv (J/cm2): ≥78(8), Hardness: ≤217HBW
First, the production process of 42CrMo seamless alloy steel pipe.
The production process of 42CrMo seamless steel pipe mainly includes tube blank preparation, perforation, rolling, heat treatment, straightening, cutting, and other links. Among them, the preparation of tube blank is the first step in the production of seamless steel pipe, which is usually prepared by continuous casting or die casting. The perforation link is to pierce the tube blank into a rough tube, and the rolling link is to roll the rough tube into a steel pipe with a specified wall thickness. The heat treatment link is to eliminate the internal stress of the steel pipe and improve the mechanical properties and corrosion resistance of the steel pipe. Finally, after straightening and cutting, the finished 42CrMo seamless steel pipe can be obtained.
Second, the performance characteristics of 42CrMo seamless alloy steel pipe.
42CrMo seamless steel pipe has excellent mechanical properties and corrosion resistance. Its main characteristics are as follows:
1. High strength: 42CrMo seamless steel pipe has high yield strength and tensile strength, and can withstand large pressure and load.
2. Good toughness: 42CrMo seamless steel pipe has excellent impact toughness, bending toughness, and other properties, and can maintain good stability in harsh working environments.
3. Good corrosion resistance: 42CrMo seamless steel pipe has good corrosion resistance after a special heat treatment process, and can be used for a long time in corrosive media such as acid and alkali.
4. High-precision size and surface quality: 42CrMo seamless steel pipe has advanced production technology, high dimensional accuracy, good surface quality, and can meet various high-precision requirements.
Third, the application field of 42CrMo seamless alloy steel pipe
42CrMo seamless steel pipe is widely used in petroleum, chemical industry, natural gas transportation, boiler manufacturing, machinery manufacturing, and other fields due to its excellent performance. In the field of petroleum and chemical industry, 42CrMo seamless steel pipe is used as the main material for conveying fluid pipelines, reactors, storage tanks, and other equipment. In the field of natural gas transportation, 42CrMo seamless steel pipe is widely used in high-pressure and large-diameter natural gas pipelines due to its high strength and good corrosion resistance. In the field of boiler manufacturing, 42CrMo seamless steel pipes are used to manufacture boiler superheaters, reheaters, economizers, and other parts. In addition, 42CrMo seamless steel pipes are also widely used in the field of mechanical manufacturing, such as manufacturing bearings, gears, hydraulic cylinders, and other parts.
Fourth, the future development prospects of 42CrMo seamless alloy steel pipes.
With the development of the global economy and the acceleration of the industrialization process, the demand for 42CrMo seamless steel pipes will continue to grow. At the same time, with the continuous advancement of science and technology, the production process and performance of 42CrMo seamless steel pipes will continue to improve. In the future, 42CrMo seamless steel pipes will develop in the direction of higher strength, better corrosion resistance, higher precision, and lower cost. In addition, with the increasing awareness of environmental protection, green, low-carbon, and environmental protection will become an important development direction for the seamless steel pipe industry. The production process of 42CrMo seamless steel pipes will also gradually achieve greening and low-carbonization, reducing the impact on the environment. At the same time, the seamless steel pipe industry will also strengthen exchanges and cooperation with the international market to jointly promote the innovation and development of seamless steel pipe technology.
In short, as an important industrial material, 42CrMo seamless steel pipe will have broad application prospects and huge market potential in future development. With the advancement of science and technology and the improvement of environmental awareness, the performance and production process of 42CrMo seamless steel pipe will continue to improve, making greater contributions to the development of the industrial field.
Post time: Oct-25-2024