Batch Oven Dries Jet Engine Cowlings

Published Date: 
Monday, March 10, 2008

Wisconsin Oven designed and manufactured an electrically heated batch oven for drying jet engine cowlings after cleaning for the US Air Force. The oven has a work chamber dimension of 5’0” wide x 6’0” long x 6’0” high and a maximum operating temperature of 650º F.

The oven is constructed with 6” thick tongue and groove panel assemblies, 20 gauge aluminized steel interior and ductwork. The oven also features a 2” thick reinforced insulated floor and a gravity roller conveyor system with a 1,000 pound gross loading capacity.

The heating system features incoloy sheathed heating elements, for a total of 48 kW with SSR power control. The recirculation system uses a 3,400 CFM @ 3 HP blower and combination airflow to maximize heating rates and temperature uniformity. A temperature uniformity of +/-10° F at 650° F was required. Actual temperature uniformity from a nine (9) point profile test resulted +6.9° F/-6.1° F.

The UL labeled and certified NEMA 12 control enclosure is mounted on the oven and includes IEC style motor starters, push buttons, and pilot lights. The temperature is controlled by a Honeywell DCP100 programmable temperature controller with 8 programs, capable of 16 ramp/soak segments, and over temperature protection is provided by a Barber-Colman 7SL high limit controller. The oven also includes a Honeywell DR4300 circular chart recorder.

The customer added Wisconsin Oven’s energy efficient E-PackTM oven upgrade, which includes thicker wall panels, higher efficient motors, a door limit switch, and a few other energy saving items that will reduce their operating costs.

For more information on our Enhanced Walk-In Ovens click here to visit our website.