| 摘要 |
PROBLEM TO BE SOLVED: To provide a gas carburizing method having an improved carburization efficiency for a workpiece to be treated without introducing or remodeling a large-scale facility, in gas carburizing treatment using a conventional gas conversion furnace, and to provide a gas carburizing system. SOLUTION: In a gas carburizing method for carburizing the workpiece to be treated in a carburization furnace of a predetermined temperature or lower containing a reformed gas and an enriched gas which are supplied, the gas carburizing method includes further supplying a gas different from the reformed gas and the enriched gas into the carburization furnace. The gas carburizing system comprises: a gas-reforming furnace for reforming a carburizing source gas to the reformed gas; and a gas carburizing furnace for carburizing the workpiece to be treated, with the use of the reformed gas supplied from the gas-reforming furnace, the enriched gas which has a higher carbon potential than the reformed gas and is supplied from the portion different from the gas-reforming furnace, and the gas different from the reformed gas and the enriched gas. COPYRIGHT: (C)2005,JPO&NCIPI
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