No. 1041 is a 1400F° (760°C) inert atmosphere tempering furnace from Grieve.
Workspace dimensions of this oven measure 48" W x 72" D x 48" H. 120 KW are installed in nickel chrome wire coils supported by a stainless steel frame, while a 9600 CFM, heat resistant alloy recirculating blower powered by a 15-HP motor provides vertical upward airflow.
This Grieve inert atmosphere tempering furnace has 7" thick insulated walls comprising 5" thick 2300°F ceramic fiber blanket and 2" thick 1900°F block insulation. Features include inner walls clad with 304 stainless steel, 304 stainless steel ductwork and a stainless steel subway grating hearth.
Other features include ¼" plate steel exterior reinforced with structural steel, ½" steel face plate at doorway and an air-operated vertical lift door. Inert atmosphere construction includes continuously welded outer shell, high temperature door gasket, sealed heater terminal boxes, inert atmosphere inlet, inert atmosphere outlet, inert atmosphere flow meter and manual gas valve.
Controls on the No. 1041 include a digital indicating temperature controller, a manual reset excess temperature controller with separate contactors, recirculating blower airflow safety switch and a digital batch timer with alarm.
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