The No. 873 from Grieve is a 650°F, electrically heated inert atmosphere cabinet oven that measures 38" × 50" × 38" and is heated by 40 kW installed in Incoloy-sheathed tubular elements. A 2,000-cfm, 2-hp recirculating blower provides horizontal airflow to the workload. The cabinet features 6" insulated walls, and 16 pairs of shelves to support 32 built-in Inconel 600 pans, with two pans on each level plus loading truck tracks on the floor of the workspace.
The cabinet features an aluminized steel exterior, Inconel 600 interior with continuously backwelded seams and special exterior paint. The oven also features full inert atmosphere construction, including pressure regulator, flow meter, pressure gage, internal high-temperature gasket, all-welded expansion connection in the doorway throat, air jacket on inner oven for cooling, ½" thick cellular silicone rubber atmosphere seal, blower-shaft seal, positive-latching door hardware, adjustable offset door hinges, outlet with pressure relief, interior seams welded gas-tight and all wall penetrations fitted with compression fittings. A 650-cfm blower pulls air through the air jacket on the inner oven for cooling. A hinged door jacket with 4" diameter connector enables jacket ventilation.
Controls include a programming temperature controller, manual reset excess temperature controller, SCR power controller and fused disconnect switch.