Annealing furnace centrifugal fans move heated air through the chamber of annealing, tempering, or stress-relief furnaces. They ensure uniform temperature profiles critical for metallurgical properties.
These fans deliver 5,000–50,000 CFM at moderate pressures up to 4 kPa and operate continuously at temperatures up to 300 °C. Impellers and casings use heat-tolerant alloys to prevent deformation.
Variable frequency drives (VFDs) enable temperature-based circulation, adjusting airflow to maintain precise setpoints and reduce cycle times.
Split-casing impeller access, external grease fittings, and motor cooling jackets simplify service. Annealing furnace centrifugal fans support high-quality heat treatment with energy-efficient airflow control.