Corrtherm Element Pit Furnace
Model 12-CT-3872-18A

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Lindberg® Corrtherm® element pit furnaces feature direct electric heating in carburizing atmospheres. Thick cross-section, low-voltage Corrtherm heating elements completely eliminate the need for a furnace retort, even in high-carbon atmospheres. Because heat is radiated directly to the work, the chamber can be of very large diameter without sacrificing temperature uniformity. This allows processing of very large parts with better accuracy than retort-style furnaces. The design has exceptional life, requiring minimal maintenance and avoiding the cracking problems inherent with retorts. Temperature range to 1850°F.

Features

• Compact size
• Long-life Corrtherm® elements
• Moldatherm® insulation
• Cover-mounted circulating fan
• Standard endothermic atmosphere system

Benefits

• Ideal for cell/JIT installations
• Low power consumptions and fast cycle times
• Energy efficiency and reliability
• Minimal maintenance
• Excellent uniformity

Options

• Carbon control with oxygen probe
• Gas flowmeters for dissociated ammonia or endothermic atmospheres
• Nitrogen-methanol atmosphere system
• Automatic nitrogen purge
• Control and recording instruments

Applications

• Annealing
• Carburizing
• Carbonitriding
• Hardening
• Normalizing
• Preheating