Advantages: Adopting zone independent temperature control, stable temperature field inside the kiln, uniform and consistent heat treatment quality of workpieces; Continuous production does not require frequent start and stop, with high production efficiency. Automated conveying reduces manual operation and lowers workpiece collision losses; Waste heat can be recovered and utilized, with higher thermal efficiency than intermittent furnaces, lower energy consumption during long-term operation, and easier standardization and control of process parameters.