METHOD FOR DEGASSING AND SOLIDIFYING ALUMINUM ALLOY POWDER

A method for degassing and solidifying aluminum alloy powder is mprovided that can eliminate drawbacks inherent in a conventional method by making induction heating available for degassing means during processes of forming and solidifying aluminum powder and aluminum alloy powder. The method compris...

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Bibliographische Detailangaben
Hauptverfasser:	TANJI, T, AKECHI, K, ODANI, Y, KAJI, T, TAKEDA, Y
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ALLOYS CASTING CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS CHEMISTRY FERROUS OR NON-FERROUS ALLOYS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS PERFORMING OPERATIONS POWDER METALLURGY TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS WORKING METALLIC POWDER
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Beschreibung
Zusammenfassung:	A method for degassing and solidifying aluminum alloy powder is mprovided that can eliminate drawbacks inherent in a conventional method by making induction heating available for degassing means during processes of forming and solidifying aluminum powder and aluminum alloy powder. The method comprises the steps of pre-forming aluminum powder, aluminum alloy powder, aluminum composite alloy powder or powder mixtures of these powders and non-ferrous metal particles to a specific resistance of 0.2 OMEGA cm or lower, removing heat decomposable evaporation components by directly induction heating the preformed body in the normal pressure atmosphere so as to raise the temperature thereof to 400 DEG C to 600 DEG C while maintaining a temperature rise gradient over 300 DEG C at 0.4 DEG C/scm or higher, and reducing the hydrogen content to less than 10 ppm.