As an important industrial material, No. 45 seamless steel pipe is widely used in various machinery, equipment and engineering fields. Among them, No. 45 seamless steel pipe, as a common material, occupies an important position in the market. This article will introduce in detail the material, use, and production process of No. 45 seamless steel pipe to help readers better understand and apply the material.
No. 45 seamless steel pipe implementation standard: GB T8162 seamless steel pipe for structure.
Chemical Composition: Carbon: 042~0.50, silicon: 017~0.27, manganese: 050~0.80, Cr: 025, Nickel: 030, Copper: 025, phosphorus: 0035, sulfur: 0035, mechanical properties: tensile strength 590MPa, wall thickness 16mm yield strength 335, wall thickness 16mm 30mm yield strength 325, wall thickness 30mm yield strength 315, elongation after break 14.
The outer diameter of No. 45 seamless steel pipe products: 10mm 762mm, wall thickness 2mm 160mm
Production mode: hot rolling, cold rolling, cold drawing
No. 45 seamless steel pipe quenched and tempered parts have good comprehensive mechanical properties, and are widely used in various important structural parts, especially those connecting rods, bolts, gears and shafts that work under alternating loads. However, the surface hardness is low and not wear-resistant. Quenching and tempering + surface quenching can be used to improve the surface hardness of parts.
1. The material of No. 45 seamless steel pipe.
No. 45 seamless steel pipe is a high-quality carbon structural steel, and its chemical composition mainly includes carbon, silicon, manganese, sulfur, phosphorus and other elements. Among them, carbon is one of the main elements of steel, which can improve the strength and hardness of steel, while silicon, manganese and other elements can improve the toughness and weldability of steel. At the same time, the content of sulfur, phosphorus and other elements needs to be controlled within a certain range to ensure the quality and performance of the steel.
Second, the use of No. 45 seamless steel pipe.
Due to the characteristics of high strength, good toughness and weldability, No. 45 seamless steel pipe is widely used in various machinery, equipment and engineering fields. For example, it can be used to manufacture infrastructure such as bridges, buildings, and highways, and can also be used to manufacture high-end equipment such as petrochemical, shipbuilding, and aerospace. In addition, No. 45 seamless steel pipes can also be used in the manufacture of special equipment such as boilers and pressure vessels, as well as in the field of fluid transportation pipelines.
3. The production process of No. 45 seamless steel pipe.
The production process of No. 45 seamless steel pipe mainly includes steelmaking, rolling, perforation, heat treatment and other links. First of all, the chemical composition needs to be controlled in the steelmaking process to ensure the quality and performance of the steel. Secondly, during the rolling process, the steel needs to be rolled and stretched several times to achieve the desired shape and size. Next, the rolled steel pipe is perforated through the perforation process to obtain a seamless steel pipe. Finally, in the heat treatment process, the steel pipe needs to be quenched, tempered and other treatments to improve its mechanical properties and corrosion resistance.
Fourth, the quality control of No. 45 seamless steel pipe.
In order to guarantee the quality and performance of No. 45 seamless steel pipe, strict quality control is required during the production process. First of all, it is necessary to select high-quality raw materials and carry out strict inspection and screening. Secondly, in the production process, it is necessary to strictly control the process parameters to ensure that the size, shape and performance of the steel pipe meet the standard requirements. In addition, the quality inspection and testing of the finished product is also required to ensure that its quality is stable and reliable.
5. The future development of No. 45 seamless steel pipe.
With the continuous progress of science and technology and the rapid development of industry, the demand for No. 45 seamless steel pipe in the market will continue to increase. In the future, with the continuous emergence of new materials and new processes, the performance and quality of No. 45 seamless steel pipe will also be further improved. At the same time, with the increasing requirements of environmental protection and sustainable development, the production process of No. 45 seamless steel pipe also needs to be continuously improved and optimized to reduce energy consumption and environmental pollution.
In short, as an important industrial material, No. 45 seamless steel pipe has a wide range of applications in various fields. Through the introduction of its material, use, production process, quality control, etc., I believe that readers have a deeper understanding of No. 45 seamless steel pipe. In the future, with the continuous progress of science and technology and the rapid development of industry, No. 45 seamless steel pipe will play a more important role and make greater contributions to the development of various industries.