ELECTRODE FOR EROSION PROCESSING AND PRODUCTION METHOD

The spark machining electrode of reduced metal requirement comprises porous copper (93-95%), graphite (1-4%) and titanium (5-7%) prod. incorporating industrial glycerine at 8-10g per kg of its compsn. The powder constituents are sintered at 900-1030 deg. C and held for 60-165 min., prior to cooling...

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Bibliographische Detailangaben
Hauptverfasser:	OBRETIN ALEXANDRINA, RO, MANTESCU GRIGORE, RO, BUDAU NICOLAE, RO, NICA NICOLAE, RO
Format:	Patent
Sprache:	eng ; rum
Schlagworte:	ARTIFICIAL STONE CASTING CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE LIME, MAGNESIA MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER METALLURGY PERFORMING OPERATIONS POWDER METALLURGY REFRACTORIES SLAG TRANSPORTING TREATMENT OF NATURAL STONE WORKING METALLIC POWDER
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Beschreibung
Zusammenfassung:	The spark machining electrode of reduced metal requirement comprises porous copper (93-95%), graphite (1-4%) and titanium (5-7%) prod. incorporating industrial glycerine at 8-10g per kg of its compsn. The powder constituents are sintered at 900-1030 deg. C and held for 60-165 min., prior to cooling over 3-5 hr. The sintering is carried out in a reducing atmos. or under vacuum at 1-3 mmHg.