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May 2017

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2,200 Degree F Inert Atmosphere Pit Furnace

No. 1040 is a 2,200 °F (1,204 °C) inert atmosphere pit furnace from Grieve, currently used for heat treating automotive parts in baskets at the customer's facility. Workspace dimensions of this furnace measure 36" wide x 36" deep x 48" high. Seventy-eight kW are installed in heavy gauge, high temperature Kanthal AF alloy wire heating elements of rod overbend design and powered through a low voltage transformer to heat the workload.

This Grieve pit furnace has 11" thick insulated walls comprising 4-1/2" thick 2,600 °F firebrick, 2-1/2" thick 2,300 °F firebrick and 4" 1,900 °F block insulation, as well as an insulated floor comprising 7" of castable refractory and 4" block insulation. Other features include a 1/4" plate steel exterior reinforced with structural steel and an air-operated, rear-hinged door. Inert atmosphere construction includes continuously welded outer shell, high temperature door gasket, sealed heater terminal boxes, inert atmosphere inlet, outlet, flow meter and manual gas valve.

Controls on the No. 1040 include a digital indicating temperature controller, manual reset excess temperature controller with separate contactors and an SCR power controller.

For more information contact:

Frank Calabrese

The Grieve Corporation

500 Hart Road

Round Lake, IL 60073-2835


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