(Main Door with Secondary Access Door)
The hot air circulation double-door box furnace is designed with a large main door and a smaller access door, allowing operators to insert or remove small samples without opening the entire chamber. This structure reduces heat loss, improves energy efficiency, and maintains temperature stability during operation. Equipped with forced hot air circulation, the furnace ensures uniform heat distribution, making it suitable for material testing, ceramic processing, powder metallurgy, and heat treatment applications.