Three-Zone Conveyor Oven Suited for Curing Coatings

Grieve’s No. 865 is a 750°F (399°C) three-zone conveyor oven currently used for curing coatings at a customer’s test facility. With workspace dimensions of 30" × 18 ft. × 15", the oven features 90 Kw (30 Kw per zone) installed in Incoloy-sheathed tubular heating elements, while three 1,500-cfm, 1 ½-hp recirculating blowers provide vertical downward airflow to the workload.

The oven has a 4-ft.-long open-belt loading zone and 4-ft.-long open unloading zone. Other features include three 6-ft.-long insulated heat zones with independent recirculated airflow and temperature control; 6" insulated walls; an aluminized steel exterior; a Type 304, 2B-finish stainless steel interior with continuously back-welded seams; a 24" wide, 1" × 1" 304 stainless steel flat-wire conveyor belt with ½-hp motor drive, variable from 0.1 to 2 fpm. Controls include digital indicating temperature controllers and a three-pen circular chart recorder.