Cabinet Oven for High-Temperature Heat Treating

The No. 965 electrically heated cabinet oven from Grieve reaches temperatures as high as 1,350°F (733°C). The oven is heated by nickel-chrome wire coils supported by a stainless steel frame, and a 1,300-cfm, 1.5-hp alloy recirculating blower provides horizontal airflow to the workload.

 

The oven’s 11"-thick insulated walls are made of 2" of 1,900°F (1,038°C) block and 9" of 10 lbs/cu. ft.-density rockwool insulation. The unit features an aluminized steel exterior, Type 304 2B finish stainless steel interior, and inner and outer door gaskets, with the inner gasket sealing directly against the door plug and the outer gasket sealing directly against the face of the oven for seal integrity. The unit’s workspace dimensions measure 24" × 24" × 24". Controls include a digital-indicating temperature controller, a manual reset excess temperature controller with separate contactors, recirculating blower airflow safety switch, a 10"-diameter circular chart temperature recorder, and an SCR power controller and fused disconnect switch.