Effects of Cooling After Rolling on Thermal Stress of H-beam Steel
Controlled cooling of H-beam steel after rolling can change the microstructure,increase strength and improve the comprehensive mechanical properties and service performance. According to the actual production, three dimensional FE model of controlled cooling of H-beam steel was established by adopting the rational thermal boundary condition. The four kinds of cooling schemes were designed. Spray cooling was used. Transient temperature field and stress field were simulated by using the FE software ANSYS/Multiphysics. Through analyzing the relationship between the temperature field and stress field, it was obtained that the main reasons for producing residual thermal stress are the section temperature difference in the cooling process of H-beam steel after rolling.