Lucifer Furnaces delivered a large recirculating oven to an automotive supplier based in the United States. It heats to 1200°F (650°C) with 35 kW of power.
The customized oven has a high-CFM rear-mounted fan assembly to recirculate the heated air uniformly throughout the chamber. A stainless steel liner isolates the heating elements from the work area and directs the air — forward over the heating elements and back through the chamber in a horizontal pattern — for uniform heating. A heavy-duty cast work tray sits on the floor of the chamber inside the liner area to support the workload and protect the floor brick. A horizontal swing door is lined with pyroblock insulation with a ceramic fiber gasket to reduce heat loss around the chamber opening.
A safety microswitch automatically shuts off power to the heating elements and fan when the door is opened, eliminating electric shock and heat blast hazards to the oven operator. Oven controls include a Honeywell digital time-proportioning temperature controller accessorized with a high limit controller for safety in the event of a high temperature excursion.