HPO

Belt conveyor oven for heat treating coiled spring steel

No. 866 is a 550 ° (288 °C) belt conveyor oven from Grieve, currently used for heat treating coiled spring steel at the customer’s facility. Workspace dimensions of this oven measure 18” W x 20’ D x 15” H. 60 KW are installed in Nichrome wire heating elements to heat the oven, while a 4200 CFM, 3 HP recirculating blower provides vertical downward airflow to the workload.

The oven travel comprises an 1-1/2’ long open belt loading zone, 20’ long insulated heat zone with recirculated airflow, 1’ long open zone, plus a 12’ long cooling zone and an 1-1/2’ long open unloading zone.

This Grieve belt conveyor oven features 4” insulated walls, aluminized steel exterior and stainless steel interior. Two 12” diameter tubeaxial fans, each driven by a ½ HP motor, push/pull air through cooling zone and a 12” wide, ½” x ½” high carbon steel flat wire conveyor belt with 1/3 HP motor drive, variable from 16 to 44 inches per minute, are also onboard the oven.

Controls on the No. 866 include a 10” diameter circular chart recording temperature controller and a manual reset excess temperature controller.

(Source: Grieve Corp.)

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