Wisconsin Oven Corp., East Troy, announces the shipment of a two-zone indirect gas-fired heavy duty walk-in oven to a global manufacturer in the composites industry. This project passed the stringent temperature uniformity requirements to meet BAC 5621 Class 1 Furnaces and Instrumentation Type D specifications.
The composite curing oven has a maximum operating temperature of 450°F and overall chamber dimensions of 12 feet wide, 35 feet long, and 9 feet high. It utilizes a horizontal air flow configuration to maximize heating rates and uniformity. Three total guaranteed temperature uniformity tests were performed to ±5°F, each at set points of 150°F, 250°F, 350°F, and 400° F to meet BAC 5621 Class 1 Furnaces and Instrumentation Type D specifications. These were verified through a 50-point profile (with center door raised), and a 25-point profile (with center door closed) performed separately. All three tests were conducted in an empty oven chamber under static operating conditions.
It has sufficient capability to heat 2000 pounds of material from 70°F to 350°F at an average rate of 10°F per minute. It features three total vertical lift, electrically operated doors; the center door (when in the closed/lowered position) separates each zone into individual chambers. When in the raised position, this center door allows the customer to utilize one main large heating chamber.
Each zone’s exhaust blowers include both VFD’s and modulating dampers to allow a lowered exhaust rate during heating, and capability for accelerated cooling of product during the cooling stage. The vacuum system includes two 2 HP rotary vane vacuum pumps, one for each zone, and a Eurotherm controller for controlling the pressure of each vacuum header. This composite curing oven also features access doors within both end vertical lift doors, personnel safety interior pull cords (to automatically open both end doors), and interior lighting.
