AL-BASALT COMPOSITE MATERIAL AND PROCESS FOR PREPARING THE SAME

AL-BASALT COMPOSITE MATERIAL AND PROCESS FOR PREPARING THE SAME

The invention relates to a composite sintered material which may replace steel, bronze, brass or ceramic materials, in the process of manufacturing bushes, disks, gear wheels, and to a process for preparing the same. The claimed material comprises Al in a ratio of 49-8% by weight, basalt in a ratio...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: LUNGU D IAN-HORA IU, GNANDT FRANCISC, VASIU IOAN RADU
Format: Patent
Sprache:eng ; rum
Schlagworte:
ALLOYS
CASTING
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
MAKING METALLIC POWDER
MANUFACTURE OF ARTICLES FROM METALLIC POWDER
METALLURGY
PERFORMING OPERATIONS
POWDER METALLURGY
TRANSPORTING
TREATMENT OF ALLOYS OR NON-FERROUS METALS
WORKING METALLIC POWDER
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Beschreibung
Zusammenfassung:The invention relates to a composite sintered material which may replace steel, bronze, brass or ceramic materials, in the process of manufacturing bushes, disks, gear wheels, and to a process for preparing the same. The claimed material comprises Al in a ratio of 49-8% by weight, basalt in a ratio of 50-91% by weight, and Zn stearate or paraffin as lubricant, in a ratio of 1-1.5%, the grain size of Al and basalt powders is lower than 200 μm. The claimed process consists in homogenizing Al and basalt powders and lubricant, die compacting the resulting material at a pressure between 400 and 600 MPa and sintering the same in nitrogen atmosphere or in vacuum to liquidus temperature of the Al-basalt alloy.