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Bogie hearth resistance furnace
Bogie hearth resistance furnace system over the same period operation furnace for large and medium-sized metal parts and materials of normalizing, annealing and other heat treatment heating. Bogie hearth resistance furnace by the furnace shell, furnace lining, heating element, door, car and control cabinet. Trolley can move, easy loading and unloading, reduce the labor intensity; the furnace body and workshop using novel automatic sealing and improve the temperature uniformity; the lining from 0.6 ultra light refractory bricks; the heating element is by high resistance alloy wire wound into a spiral, placed in the lining of the resting brick and car bottom resting on brick; the lift door and car pass in and out all mechanical transmission, and is provided with an electric interlocking device, furnace bottom by heat-resistant steel castings. With two thermocouples put on top of the furnace, one is used for testing furnace temperature, another is used for over heating protection.