750°F Conveyor Oven from Grieve

November 3, 2017

No. 865 is a 750°F (399°C), three-zone conveyor oven from Grieve, currently used for curing coatings at a test facility. Workspace dimensions of this oven measure 30” wide x 18’ deep x 15” high. It has a 4’ long open belt loading zone, three 6’ long insulated heat zones with independent recirculated airflow and temperature control, and a 4′ long open unloading zone. 90 KW (30 KW per heat zone) are installed in Incoloy sheathed tubular heating elements, while three 1500 CFM, 1-1/2 HP recirculating blowers provide vertical downward airflow to the workload.

The insulated walls are 6” thick and the interior is Type 304, 2B finish stainless steel interior with continuously backwelded seams. The belt is 24” wide, 1” x 1” 304 stainless steel flat wire with ½-HP motor drive, variable from 0.1′ to 2′ per minute.

Controls on No. 865 include digital indicating temperature controllers and a 3-pen circular chart recorder.