Continuous Furnaces

Tim Raffeinner, Abbott Furnace Company

Continuous production sintering furnaces for powder metal compacts come in several designs including the mesh-belt conveyor furnace, the ceramic-belt conveyor furnace, the roller-hearth furnace, the pusher furnace, the walking-beam furnace, and the continuous vacuum furnace (Fig. 1). A typical continuous sintering furnace has four distinct areas: the preheat, delube, or burn-off area; the high heat or sintering area; the slow cool or transition area; and the final cooling area (Fig. 2).

Fig. 1 Schematic of various continuous furnaces

Fig. 2 Schematic of a muffled continuous mesh-belt sintering furnace

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