Gas-Fired Batch Ovens Cure Ceramic Coatings Efficiently - Posted 2/20/08
Wisconsin Oven recently designed and manufactured three gas-fired batch ovens to cure ceramic coatings on assorted parts for the aerospace industry. Each oven has combination airflow, work chamber dimensions of 6’0” wide x 7’0” long x 8’0” high, and 650ºF maximum operating temperature.
Wisconsin Oven recently designed and manufactured three gas-fired batch ovens to cure ceramic coatings on assorted parts for the aerospace industry. Each oven has combination airflow, work chamber dimensions of 6’0” wide x 7’0” long x 8’0” high, and 650ºF maximum operating temperature.
Using three batch ovens instead of a larger continuous oven helps the plant keep up with their growing production demands. Each oven is used for two processes: preheating, with low temperature operation capability from a gas heated oven; and curing at 650°F (normal curing temperature).
This plant uses a pilotless burner, powered exhaust blower, and an automatically actuated fresh air inlet and exhaust outlet to maintain a low operating temperature of 100°F above ambient minimum. (The modulating damper system can also be used for accelerated cooling of the chamber). The plant’s uniformity requirement was ±15°F @ 650°F. Each oven achieved ±8.5°F @ 650°F or better with a nine-point profile uniformity test. The plant's current batch equipment was unable to perform both processes with gas heating.
Each curing oven features a 7,000 CFM @ 7-1/2 HP recirculation blower, 900 CFM @ 1 HP powered exhaust blower, class A rating for solvents (as defined by NFPA), and modulating damper system. All of the ovens have pneumatically operated vertical lift doors and 2” thick reinforced insulated floors with wheel guides for manually loaded carts that are pushed into the ovens. The controls include a Honeywell UDC 2500 temperature controller (with heat/cool duplex), Honeywell DR4500 Truline® 12” circular chart recorder with heated stylus pen and digital display. The plant also 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, contact Doug Christiansen at 262.642.6023 or dchristiansen@wisoven.com, or visit www.wisoven.com.
Wisconsin Oven recently designed and manufactured three gas-fired batch ovens to cure ceramic coatings on assorted parts for the aerospace industry. Each oven has combination airflow, work chamber dimensions of 6’0” wide x 7’0” long x 8’0” high, and 650ºF maximum operating temperature.
Using three batch ovens instead of a larger continuous oven helps the plant keep up with their growing production demands. Each oven is used for two processes: preheating, with low temperature operation capability from a gas heated oven; and curing at 650°F (normal curing temperature).
This plant uses a pilotless burner, powered exhaust blower, and an automatically actuated fresh air inlet and exhaust outlet to maintain a low operating temperature of 100°F above ambient minimum. (The modulating damper system can also be used for accelerated cooling of the chamber). The plant’s uniformity requirement was ±15°F @ 650°F. Each oven achieved ±8.5°F @ 650°F or better with a nine-point profile uniformity test. The plant's current batch equipment was unable to perform both processes with gas heating.
Each curing oven features a 7,000 CFM @ 7-1/2 HP recirculation blower, 900 CFM @ 1 HP powered exhaust blower, class A rating for solvents (as defined by NFPA), and modulating damper system. All of the ovens have pneumatically operated vertical lift doors and 2” thick reinforced insulated floors with wheel guides for manually loaded carts that are pushed into the ovens. The controls include a Honeywell UDC 2500 temperature controller (with heat/cool duplex), Honeywell DR4500 Truline® 12” circular chart recorder with heated stylus pen and digital display. The plant also 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, contact Doug Christiansen at 262.642.6023 or dchristiansen@wisoven.com, or visit www.wisoven.com.
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