Model 12-SO-3560-HC17AR
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HOMOCARB^® Furnace

The Lindberg HOMOCARB® furnace is an electrically heated pit style furnace capable of temperatures up to 1750°F. The furnace is top loading with sealed-alloy retort. Ribbon-type electric heating elements provide high heat transfer efficiency. An internal fan provides excellent distribution of the atmosphere gases and ensures uniform carburization. Its peripheral speed creates a swirling action and forces the carbonaceous atmosphere upward past the exterior of the load and then down through the load.

A 6-inch cooling vent pipe with butterfly valve accelerates the cooling of the load from carburizing temperature to transfer temperature. The vent is mounted through the furnace jacket side. It allows room air to be convected through the space between the retort and the jacket insulation.

Atmosphere is supplied to the furnace by any of three methods:
1) Use of Lindberg’s homocarb fluid. This method eliminates the need for an external generating source. The fluid is injected onto a furnace-heated target placed over the work load. The fluid is “cracked” into carbon and hydrogen.
2) Atmosphere is supplied by an external endothermic generator. The endothermic carrier gas and a hydrocarbon enricher, such as natural gas or propane, are mixed externally at the inlet tube at the bottom of the furnace. Then, superheated by the retort wall before entering the work load.
3) A user-supplied carburizing atmosphere, such as nitrogen-methanol system, is delivered to the furnace via a Lindberg-supplied inlet tube.

Features

• Forced circulation
• Lightweight Moldatherm® insulation
• Microprocessor-based controls
• Proven components that deliver long service life
• Tight atmosphere chamber with solid bottom retort, sealed motor, and positive cover seal

Benefits

• Low operating costs
• Energy efficiency and reliability
• Easy operation
• High reliability
• Low atmosphere consumption

Options

• Automatic atmosphere control system
• Carbonitriding process system

Applications

• Carburizing
• Annealing
• Preheating
• Carbonitriding
• Normalizing