METHOD FOR PRODUCING SILVER INGOT

PROBLEM TO BE SOLVED: To provide a method for producing a silver ingot using silver powder by which dissolution of oxygen into molten silver is suppressed inexpensively by a simple means thereby the silver ingot excellent in a surface state and workability, and at the same time if necessary, having...

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Bibliographische Detailangaben
Hauptverfasser:	KUROKAWA HARUMASA, MANABE YOSHIAKI, NAGAI HIDEMASA, NAKAMURA SOJI
Format:	Patent
Sprache:	eng
Schlagworte:	CASTING CASTING OF METALS CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES CHEMISTRY FERROUS OR NON-FERROUS ALLOYS METALLURGY PERFORMING OPERATIONS POWDER METALLURGY PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a method for producing a silver ingot using silver powder by which dissolution of oxygen into molten silver is suppressed inexpensively by a simple means thereby the silver ingot excellent in a surface state and workability, and at the same time if necessary, having low content of impurity elements is produced. SOLUTION: The method for producing the silver ingot is characterized in that the silver powder adjusted into wet state with water is heated and melted in a crucible and the obtained molten silver is cast into a mold and further, carbon content is added to the silver powder. COPYRIGHT: (C)2005,JPO&NCIPI