Strength, plasticity and toughness that should be paid attentio

• Posted by 123 asd July 26, 2023 Filed in Business #  #prefab steel structure  52 views
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  The foundation of the steel structure factory building must be well done, and there must be no problems during planning. Many things may collapse due to a small factor in the future. Care must be taken in the selection of steel materials to avoid plastic damage. The main feature is that it has large plastic deformation before damage, and there are often obvious rust and shedding lines that are not straight and intertwined on the surface of the steel; damage occurs only when the stress in the component reaches the tensile strength. The broken N is fibrous and dark in color: because there is always a large plastic deformation before the fin is damaged, the deformation lasts for a long time, and it is easy to be discovered and repaired and strengthened, so no serious consequences will occur. The large plastic deformation capacity of steel before plastic damage can realize the redistribution of internal forces in components and structures, and make some stresses in the structure that are originally unequal in stress tend to be even, thus improving the bearing capacity of F structure and the plastic design of steel structure It is based on this sufficient plastic deformation ability.

  

  The main characteristic of brittle damage is that the plastic deformation is very small before damage, or there is no plastic deformation at all. However, the calculated stress uJ can be less than the yield point of the steel for sudden and rapid cracking, and the cracking starts from the place where the stress is concentrated. The speed is extremely fast, and it is impossible to detect and make up for it, and once it occurs, it often causes damage to the entire structure, and the consequences are very serious. Therefore, in the planning, construction and use of steel structures, special care must be taken to avoid such damage. .

  Processing functions include cold, hot processing and weldable functions. Steel should have good processing properties to ensure that it is not only easy to process into various forms of structures, but also does not have a large adverse effect on strength, plasticity and toughness due to processing.