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Indirect gas-fired aluminum aging oven treats exterior components of aircraft engines

January 04, 2018
Source: ASM International

Wisconsin Oven Corp., East Troy, Wis., has built an indirect gas-fired aluminum aging oven for treating aluminum exterior components of aircraft engines. The aging oven has sufficient capability to heat 7000 pounds of aluminum and 15,000 pounds of steel load car and fixturing (including weight of the multiple-level racks to support the stacked lip skins) from 70°F to 375°F within two hours.

The work chamber is 17 x 17 x 11.4 feet high, and the maximum operating temperature rating is 500°F. The customer required guaranteed temperature uniformity of ±5°F at set points of 200°F, 375°F, and 400°F to ensure that the oven would meet AMS 2750E, Class 1 furnaces and Instrumentation Type A. The recirculation system utilizes combination airflow to maximize heating rates and temperature uniformity of the product.

“This oven was engineered with an indirect gas-fired design, in which the burners fire through a tube style heat exchanger,” says Mike Grande, VP of Sales & Engineering. ‘This design was necessary to prevent the products of combustion from mixing with the recirculated airstream.”

The oven was fully factory tested and adjusted prior to shipment to an aerospace parts manufacturer. All safety interlocks were checked for proper operation, and the equipment was operated at the normal and maximum operating temperatures. An extensive quality assurance check list was completed to ensure the equipment met all Wisconsin Oven quality standards.

Subject Classifications

Industries and Applications | Aerospace and Defense

Materials Processing and Treatment | Heat Treating

Metals and Alloys | Aluminum

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