An electrically heated rod overbend atmosphere box furnace will perform a heat treatment on aerospace parts within the work chamber under a reducing atmosphere generated from a nitrogen-methanol panel. The unit, manufactured by Lindberg/MPH and shipped to an aerospace manufacturer, has a maximum temperature rating of 2000°F (1093°C).
A recirculating fan distributes atmosphere and heat evenly within the work chamber, and temperature uniformity is +/-25° F at 2000°F. The rod overbend box furnace also utilizes an integrated carbon control circuit for neutral hardening. The chamber is heated with a radiant heating system that uses heavy-gauge-alloy rod overbend heating elements positioned on the chamber side walls and floor. Multiple thermocouple jacks are located on the outside of the furnace shell to allow for easy connection to thermocouples at various locations.