Based on the analytic solution of three-dimensional temperature field for rectangular distribution of heat strength derived from the curved moving heat source model, the effect of worktable feed speed, width of workpiece and that of grinding wheel on the grinding temperature field is analyzed theoretically. The results are helpful to predict the grinding temperature distribution and avoid various types of thermal damage to workpiece, which is of great practical interest as well as of great theoretical importance.

The appropriate exact analytic solutions of grinding temperature field for disk workpiece by cup wheel is obtained based on the curved moving heat source model. Considering the influence of disk workpiece geometry, two stages of grinding process are divided: the cutting-in stage and the complete cut-in stage. Coordinate conversion method is introduced to deal with the effect of the workpiece boundary conditions. Calculation results indicate that the temperature distribution of grinding disk workpiece is non-uniform similar to that of grinding rectangular one.

The microstructure of Ti+P IF steel were studied after warm rolling, cold rolling and recrystallization using X-Ray, TEM and SEM. The results show that the characteristics of warm rolled sheet are the same as that of the cold rolled, but the texture displays different characteristics in the subsequent cold rolling and recrystallization because of the numerous second-phase particles. In this work, a Ti+P IF steel sheet with high strength and plastic strain ratio was obtained.