Experiment on Optimization of Production Process of Q345C Steel by Adding Nano TiN Particles in Ladle
Grain refinement is an effective way to improve the strength and toughness of steel at the same time. At present, there are two main methods for refining grains: deformation treatment and chemical addition. The deformation treatment method mainly adopts controlled rolling and controlled cooling technology in steel production. Grain refinement; chemical addition is achieved by adding ultrafine particles to the steel to achieve grain refinement. Wang Guocheng added Al2O3 nanopowder with a particle size of 120nm in steel to improve the strength and impact toughness of steel and to refine non-metallic inclusions. Chemical addition methods are not widely used in production, and most of them are in the laboratory research stage. In order to optimize the production process of Q345C steel, the scholars of Shandong Co., Ltd. carried out the experiment of adding QTi steel to the Q345C steel in the Q345B ladle without changing the original steelmaking and rolling process of Q345B steel, and studied different nano TiN. The effect of particle addition on the mechanical properties and metallographic structure of Q345 steel. The results show that the mechanical properties of the test steel produced by adding 0.05% nano-TiN particles in Q345B ladle can meet the requirements of Q345C steel and improve the production efficiency of Q345C steel rolling steel by more than 20%. Adding mass fraction of 0.05% nano-TiN particles, the grain size of the test steel is 8-10, the grain has a certain degree of refinement, and the TiN particles exist in the pure material state in Q345 steel, which plays a certain degree of heterogeneity in the steel. Nuclear and pinning. Temperature Sensor,Temperature Sensor Thermocouple,Temperature Sensor Adapter,Temperature Sensor Thermal Resistance Yuyao Gongyi Meter Co.,Ltd. , https://www.yycj.com