HIGH TEMPERATURE ELECTRIC INERT ATMOSPHERE OVEN FOR STRESS RELIEF OPERATIONS

This electrically heated inert atmosphere oven uses a 975 cfm blower to pull air through an air jacket on the inner oven for cooling loads up to 2500 lb.

The No. 842 is a high-temperature, 1250 deg F electrically heated inert atmosphere oven from The Grieve Corporation (Round Lake,IL) that is currently used for various stress relieving operations at a customer’s facility.

Workspace dimensions of this oven measure 36 in wide x 48 in deep x 36 in high. 24KW installed in Incoloy-sheathed tubular heating elements furnish the heat, while a 1400 cfm, 1½ hp recirculating blower provides front to back horizontal airflow to the workload. This Grieve oven has 10 in insulated walls, aluminized steel exterior and Type 304, 2B finish stainless steel interior, plus three roller rails at the bottom of the workspace to support 2,500 lb loads. The oven includes an integral, heavy-duty leg stand.

Safety and control equipment on-board this Grieve oven include a 975 cfm blower to pull air through an air jacket on the inner oven for cooling, a digital indicating temperature controller, manual reset excess temperature controller with separate contactors, recirculating blower airflow safety switch, 10 in diameter circular chart recorder and SCR power controller.

Grieve inert atmosphere oven construction features include all interior seams welded gas-tight, all wall penetrations welded inside and fitted with compression fittings outside, inner oven walls extended through oven throat area to seal directly against silicone rubber door seal, 2-point cam action positive latching door hardware, inert atmosphere inlet with pressure regulator, atmosphere flowmeter, and pressure gauge to indicate interior oven pressure.

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