Shortcomings of Tianjin Iron and Steel Company

The main disadvantages of Tianjin Iron and Steel are poor rust resistance and fire resistance. Super steel was successfully developed under the conditions of increasing the pressure to 5 times of the normal pressure, increasing the cooling rate and strictly controlling the temperature during rolling. Its grain diameter is only 1 micron, which is110 ~1/20 of ordinary steel. Therefore, it has fine structure, high strength and high toughness, and can maintain high strength even without adding elements such as nickel and copper. When the pressure of 750 degrees Celsius is applied, the particles in the super steel structure will not be deformed. This technology is called "diffusion bonding technology". Compared with the current high-temperature welding technology, it has the advantages of no welding trace and no degradation of strength. This will greatly improve the quality of all kinds of steel. Disadvantages: The main disadvantages of building steel are easy to rust, poor fire resistance, high maintenance cost, high energy consumption and cost. Steel is a material with certain shape, size and properties, which is made of ingot, billet or steel through pressure processing. Most steel products are processed by pressure, and the pressure will cause plastic deformation of the processed steel products (billets, ingots, etc.). ). According to the different processing temperatures of steel, it can be divided into cold working and hot working.