Anti-fatigue Performance Of High-rise Steel Plate

Q345GJB is a kind of grinding tool steel; spring steel; Z-direction steel. Generally speaking, it is mostly used in high-rise buildings, and most of them are used as structural steel. It can also be used as a material for molds and springs.
Gaojian steel has high strength, good fatigue resistance; high toughness and low brittle transition temperature; good cold forming performance and welding performance; good corrosion resistance and certain wear resistance. High strength, especially in normalized or normalized plus tempered state with high comprehensive mechanical properties. Experimental research on steel materials with lamellar tearing accidents shows that the reduction of area in the thickness direction is generally lower than 15%. Generally, thick steel plates are more prone to lamellar tearing. The thicker the steel plate, the more non-metallic inclusion defects, the thicker the weld, and the greater the welding stress and deformation. In order to prevent the frequent occurrence of lamellar tearing, Wugang took the lead in developing a steel plate with high performance in the thickness direction, and the section shrinkage rate in the Z direction is above 15%. The safety of steel structure construction is very important, and there are special technical requirements for the steel used. By using high-rise building boards, it can adapt to and support the building structure; in the direction of high-rise and large-span development, it can reduce structural weight, reduce manufacturing costs, reduce the thickness of steel structure materials, and improve its manufacturing reliability. The steel used in high-rise buildings is subject to complex stress conditions, and requires high safety and reliability, long service life, and the ability to withstand damage of a certain seismic intensity, which determines that the steel plates used in high-rise building structures require certain special functions.