SINTERED COMPOSITE MATERIAL OF ALUMINUM-BASED POWDER FOR BEARING, AND MANUFACTURING METHOD THEREFOR

PROBLEM TO BE SOLVED: To reduce generation of blister which causes material defects by facilitating emission of gas which evolves in the material during sintering, when obtaining aluminum-based bearing materials through powder metallurgy. SOLUTION: A composite band material 7 made from powder having...

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Hauptverfasser:	SUGAWARA HIROYUKI, HASEGAWA YASUKUNI, OKAWA HIROE
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS BEARINGS BLASTING CASTING CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS CHEMISTRY ELEMENTS OR CRANKSHAFT MECHANISMS ENGINEERING ELEMENTS AND UNITS FERROUS OR NON-FERROUS ALLOYS FLEXIBLE SHAFTS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM LIGHTING MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER MECHANICAL ENGINEERING METALLURGY PERFORMING OPERATIONS POWDER METALLURGY ROTARY BODIES OTHER THAN GEARING ELEMENTS SHAFTS TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ARTCOLLECTIONS [XRACs] AND DIGESTS THERMAL INSULATION IN GENERAL TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS WEAPONS WORKING METALLIC POWDER
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Zusammenfassung:	PROBLEM TO BE SOLVED: To reduce generation of blister which causes material defects by facilitating emission of gas which evolves in the material during sintering, when obtaining aluminum-based bearing materials through powder metallurgy. SOLUTION: A composite band material 7 made from powder having a three-layer structure is continuously produced by a powder compacting molding roll 1. The powder composite band material is sintered at a temperature between 460 deg.C and 550 deg.C to provide a sintered composite band material 7a. The sintered composite band material is continuously roll bonded with a steel band material 9. The bonded composite band material is selectively heat treated at a temperature between 250 deg.C and 400 deg.C, then is heated at a temperature between 400 deg.C and 510 deg.C, is maintained at the temperature for more than 30 seconds, and is rapidly cooled to 300 deg.C at a cooling speed of 50 deg.C/ minute or more, to provide a multilayered composite material consisting of the steel band material, an adhesion layer of the sintered layer, a sliding layer, and a sacrificial layer. The manufacturing method is characterized by adding one or more low melting elements selected from Sn, In, or Pb, of 0.4-5 mass% (the adhesion layer) and 0.4-25 mass% (the sacrificial layer) to the raw powder for forming the adhesion layer and the sacrificial layer which are surface layers.