Custom Oven for Curing Magnetic Windings Designed to Produce Low-Noise Transformers

Benko Products Inc., manufacturer of the Sahara line of industrial ovens, announces the shipment of a custom dryer and curing oven designed to construct lower noise transformers. Delivered recently to an electrical transformer manufacturer in the US, the custom drying and curing oven will be used to cure and heat magnetic windings.

To make low-noise transformers, the windings must be kept tight, the company explained. However, during the curing process, the metal windings expand which can introduce gaps and cause the transformers to be noisy. The customer eliminated this problem by applying a DC voltage to the transformer during the curing process. The magnetic field created by the DC voltage pulls the windings together and holds them in place until the curing cycle is complete. This practice will allow the customer to construct lower noise transformers, said Benko.   

Benko also has standard Sahara ovens available as either gas fired or electric heated in three temperature ranges, 350°F up to 800°F. The company is based in Sheffield Village, OH. 

Features of the custom dryer oven include uni-flow air flow, temperature uniformity of ±10°F, touch screen display and sensor break recovery. At the event of a sensor failure the temperature controller will switch instantaneously to the alternative thermocouple thus allowing the process to complete and avoid lost cure cycle. For more information, see