Continuous carburizing furnace

Details Continuous carburizing furnace Continuous carburizing furnace

2007-10-10

2010-11-30

Kastler, Scott (Department: 1793)

Metallurgical apparatus

Means treating solid metal

By contact with gas

C266S251000

Reexamination Certificate

active

07842230

ABSTRACT:
A continuous carburizing furnace includes a furnace having a carburizing zone for performing a carburizing process on a workpiece while the workpiece is conveyed; and a plurality of regions disposed successively in a direction of conveyance upstream from the carburizing zone, the carburizing zone being provided with an intermediate door being opened and closed between the carburizing zone and the upstream side therefrom. Also included is at least a single lift mechanism for lowering the workpiece in a region other than a region of the most upstream side among the plurality of regions; and a plurality of pushers for pushing the workpiece at each of the plurality of regions to regions downstream therefrom or to the carburizing zone, the plurality of pushers being disposed so as to push the workpiece at successively lowered levels of height one after another in the direction of conveyance.

REFERENCES:
patent: 7507087 (2009-03-01), Tenzek
patent: 2004-010945 (2004-01-01), None
patent: 2006137964 (2006-06-01), None

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