Inert Atmosphere Walk-in Oven Heats Graphite Molds

Grieve’s No. 907 is an electrically heated inert atmosphere walk-in oven currently used for heat-treating graphite tooling molds.

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Grieve’s No. 907 is an electrically heated inert atmosphere walk-in oven currently used for heat-treating graphite tooling molds. The oven has a maximum operating temperature of 1,000°F and features 100 kW installed in Incoloy-sheathed tubular heating elements, while a 7,800-cfm, 5-hp recirculating blower provides combination airflow to the workloads. Workspace dimensions measure 48" × 84" × 72". A flatbed loading truck with 2,000-lb capacity, plus a transfer dolly with oven-to-dolly and dolly-to-truck latches are also included.

The oven features 8"-thick walls, comprised of 2" of 1,900°F block and 6" of 10-lb/cf-density rockwool insulation, as well as an aluminized steel exterior and interior.  Special inert-atmosphere construction highlights include a pressure regulator, 0-1,200-cfh flowmeter, pressure gage, inner oven walls that seal directly against a 1/2"-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 oven-wall penetrations fitted with compression fittings.