METHOD FOR GRAIN REFINING OF METALS

PCT No. PCT/NO89/00068 Sec. 371 Date Dec. 19, 1990 Sec. 102(e) Date Dec. 19, 1990 PCT Filed Jun. 30, 1989 PCT Pub. No. WO90/00205 PCT Pub. Date Jan. 11, 1990.A method for grain refining of light metals is based on formation in situ of a grain refining agent. By means of an electric arc provided over...

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Hauptverfasser:	VENAS, KARL, MYRBOSTAD, ERLING
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS CHEMISTRY FERROUS OR NON-FERROUS ALLOYS METALLURGY PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Zusammenfassung:	PCT No. PCT/NO89/00068 Sec. 371 Date Dec. 19, 1990 Sec. 102(e) Date Dec. 19, 1990 PCT Filed Jun. 30, 1989 PCT Pub. No. WO90/00205 PCT Pub. Date Jan. 11, 1990.A method for grain refining of light metals is based on formation in situ of a grain refining agent. By means of an electric arc provided over the surface of a melted pool of the metal, a supplied gas, e.g. nitrogen, reacts with the metal to form the agent. The method can be carried out both batchwise or in a continuous process.