Wisconsin Oven Corp., East Troy, Wis., has shipped an electrically heated annealing furnace to a firearms manufacturer for annealing an assortment of brass and bronze firearm caps. The annealing furnace has a maximum temperature rating of 1400°F and a normal operating temperature of 572 to 1202°F. The work chamber dimensions are 3 x 9 x 0.5 feet. The conveyor furnace, when preheated, has the sufficient capacity to heat 225 kg of product per hour from 23° C to 650° C.
The recirculation system was designed with bottom-up airflow. The continuous conveyor system utilizes a pintle chain driven wire mesh belt and variable frequency drive for adjustable conveyor speeds. High-temperature profile curtains with external vestibules on both ends of the conveyor reduce heat spill-out and improve temperature uniformity. A guaranteed temperature uniformity of ±18° F at 572° and 1202° F for a minimum of 33 minutes has been documented.
“This conveyor furnace was designed with features to maximize temperature uniformity throughout the work chamber to ensure optimal results for the customer,” says Tom Trueman, Senior Application Engineer.
