Tempering is a process which increases the toughness in materials such as steel, aluminum, and glass. In this process, the material is heated above its upper critical temperature or annealing point. It is then rapidly cooled via immersion or forced air draft. The industrial forced draft fans (FD Fans) used in tempering typically require high volume and horsepower. AirPro builds pre-engineered and custom engineered industrial fans & blowers that are highly-efficient, high-temperature, and high-integrity. Dampers and other accessories are available.

Fan Designs Used in Tempering Applications