Vacuum furnace for carburizing with hydrocarbons

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United States of America Patent

PATENT NO 7204952
SERIAL NO

11263551

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Abstract

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Vacuum carburizing of ferrous workpieces is performed at low pressure in a vacuum furnace using a carburizing hydrocarbon as the carburizing medium. The furnace is constructed to be generally transparent to the carburizing hydrocarbon so that cracking tends to occur at the workpiece which functions as a catalyst to minimize carbon deposits. The carburizing hydrocarbon is supplied in liquid form to an injector which injects the liquid carburizing hydrocarbon as a vapor to produce a uniform dispersion of the carburizing hydrocarbon about the workpiece, resulting in uniform carburizing of the workpieces.

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Patent Owner(s)

Patent OwnerAddress
SURFACE COMBUSTION INC1700 INDIAN WOOD CIRCLE P O BOX 428 MAUMEE OH 43537

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Barbee, Gary W Rossford, OH 2 11
Brug, James E Toledo, OH 2 11
Poor, Ralph P Toledo, OH 7 73
Verhoff, Stephen H Monclova, OH 4 32

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