METHOD OF PRODUCING LOW-POROUS POWDER MATERIALS

powder metallurgy, particularly, production of iron-base powder materials infiltrated with copper alloys. SUBSTANCE: method includes formation of two-layer porous powder intermediate product by filling mold with base powder and its premolding under pressure of 50-400 MPa and subsequent filling of lo...

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Bibliographische Detailangaben
Hauptverfasser:	DOROFEEV JU.G, GANSHIN A.V, SERGEENKO S.N
Format:	Patent
Sprache:	eng
Schlagworte:	CASTING CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER PERFORMING OPERATIONS POWDER METALLURGY TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TRANSPORTING WORKING METALLIC POWDER
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Beschreibung
Zusammenfassung:	powder metallurgy, particularly, production of iron-base powder materials infiltrated with copper alloys. SUBSTANCE: method includes formation of two-layer porous powder intermediate product by filling mold with base powder and its premolding under pressure of 50-400 MPa and subsequent filling of low-melting material in amount of 15-25% of base material weight and final pressing, sintering combined with impregnation. Low-melting material of surface layer of two-layer intermediate product is used in the form of chip wastes of copper-base nonferrous alloys. Pressure of final pressing of two-layer intermediate product is 600-800 MPa. EFFECT: reduced cost of production of composite materials with utilization of chips of nonferrous metals. 3 dwg, 4 ex