Flat steel is the main material used for building structures, mechanical equipment frames, and room beams and columns, which plays a great role in use. Now let's introduce the knowledge about the function of flat steel.
1. Flat steel is mainly used for bars and wall beams of steel structure buildings, and can also be combined into lightweight roof trusses, brackets and other building components.
2. Because the flat steel has small overall dimensions but high strength (tensile strength is above 600 mpa) and good plasticity and toughness, it can be rolled into plates or forged materials as thin plates; It can also be made into various profiles by cold bending for further processing.
3. According to the different section shapes, it can be divided into two types: groove shape and profiled shape.
4. For structural steel subject to dynamic load, sufficient plasticity and toughness shall be ensured to bear the couple moment generated by dynamic load.
5. The important structural steel required to have a certain strength shall also have a certain hardenability to meet the ability of large plastic deformation without damage after being loaded;
6. For important welding structural members, good welding performance must also be guaranteed to ensure the weld quality and reduce the generation of post welding stress:
7. For parts with large section, they can be divided into upper and lower parts, which can be fabricated separately and then assembled into a whole load-bearing component to improve their utilization.
8. Some flat steels for special purposes also have good cold forming properties and machinability, such as longitudinal ribs of automobile girders, cold forming pipes of window frame beams, and axle parts on some machines.