Press-molding process for preparing a powder compact

A flux-path forming member of a motor is prepared from a mixture mass by evenly mixing up to 4% of a thermosetting resin binder and molybdenum disulfide with at least 96% of a metal powder, fibrous metal, or a combination thereof; a second step of compacting in a mold under pressure the mixture mass...

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Bibliographische Detailangaben
Hauptverfasser:	MIZUNO, SHIGERU, HARUKI, SUZUKI, MASAHIKO, KATSU, MASUTARO
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING ALLOYS CASTING CHEMISTRY CONVERSION OR DISTRIBUTION OF ELECTRIC POWER DYNAMO-ELECTRIC MACHINES ELECTRICITY FERROUS OR NON-FERROUS ALLOYS GENERATION MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER METALLURGY PERFORMING OPERATIONS POWDER METALLURGY SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS WORKING METALLIC POWDER WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	A flux-path forming member of a motor is prepared from a mixture mass by evenly mixing up to 4% of a thermosetting resin binder and molybdenum disulfide with at least 96% of a metal powder, fibrous metal, or a combination thereof; a second step of compacting in a mold under pressure the mixture mass into a desired shape; and a third step of heating, concurrently with or subsequently to the second step, the mixture mass to an elevated temperature to cure the binder portion thereof. The compact prepared by the above process is also disclosed. The content of the thermosetting resin at least 0.2 percent by weight, and the content of the molybdenum disulfide is at least 0.1 percent by weight. The curing operation is conducted at a temperature not higher than 300 DEG C.