No. 1041 is a 1400°F (760°C) inert-atmosphere tempering furnace with workspace dimensions measuring 48 inches wide x 72 inches deep x 48 inches high. A 9,600-CFM, heat-resistant-alloy recirculating blower powered by a 15-HP motor provides vertical upward airflow, and 120 kW are installed in nickel chrome wire coils supported by a stainless steel frame. The furnace has 7-inch-thick insulated walls comprising 5 inches of 2300°F ceramic-fiber blanket and 2 inches of 1900°F block insulation. Controls include a digital indicating temperature controller, manual reset excess temperature controller with separate contactors, recirculating blower airflow safety switch and a digital batch timer with alarm.
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