No. 854 is a special high-temperature, 2200°F electrically-heated, inert atmosphere floor furnace from Grieve, currently used for various heat treating applications at a customer’s facility.
Workspace dimensions measure 24″ wide x 48″ deep x 24″ high. 53KW installed in heavy-gauge, high-temperature Kanthal AF alloy wire, rod overbend design heaters provide maximum operating temperatures to 2200°F.
This Grieve furnace features 9″ insulated walls, consisting of 4-1/2″ thick 2600°F firebrick, 2-1/2″ thick 2300°F firebrick and 2″ thick block insulation. A firebrick plate hearth is supported on firebrick piers. An electrically vertical lift door is operated by remote foot pedal.
Special inert atmosphere construction on No. 854 includes a continuously welded outer shell, high-temperature door gasket, sealed heater terminal boxes, inert atmosphere inlet, inert atmosphere outlet, and flowmeter.
Also featured on this furnace are digital programming temperature controller, manual reset excess temperature controller with separate contactors, and 4-channel strip chart recorder.