MANUFACTURING METHOD OF SINTERED MAGNET

PROBLEM TO BE SOLVED: To provide a method for manufacturing a thin sintered magnet of high orientation by raising the fluidity of a compound and reducing the disturbance of surface orientation caused by friction, while restraining oxidation due to the rise of a formation temperature and an increase...

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Hauptverfasser: TANIGAWA SHIGEO, OGAWA YUICHI
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creator TANIGAWA SHIGEO
OGAWA YUICHI
description PROBLEM TO BE SOLVED: To provide a method for manufacturing a thin sintered magnet of high orientation by raising the fluidity of a compound and reducing the disturbance of surface orientation caused by friction, while restraining oxidation due to the rise of a formation temperature and an increase in remaining carbon amount due to an increase in resin amount. SOLUTION: In the manufacturing method of the sintered magnet, the compound is formed by mixing a thermoplastic resin and magnetic material powder, the compound is formed to a molded item by an extrusion or injection molding machine, and the thermoplastic resin is degreased from the molded item and sintered. A supercritical fluid is dissolved inside the extrusion or injection molding machine and mixed with the compound, and the molded item is formed by extrusion or injection molding in a magnetic field. COPYRIGHT: (C)2005,JPO&NCIPI
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SOLUTION: In the manufacturing method of the sintered magnet, the compound is formed by mixing a thermoplastic resin and magnetic material powder, the compound is formed to a molded item by an extrusion or injection molding machine, and the thermoplastic resin is degreased from the molded item and sintered. A supercritical fluid is dissolved inside the extrusion or injection molding machine and mixed with the compound, and the molded item is formed by extrusion or injection molding in a magnetic field. 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subjects BASIC ELECTRIC ELEMENTS
CASTING
ELECTRICITY
INDUCTANCES
MAGNETS
MAKING METALLIC POWDER
MANUFACTURE OF ARTICLES FROM METALLIC POWDER
PERFORMING OPERATIONS
POWDER METALLURGY
SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
TRANSFORMERS
TRANSPORTING
WORKING METALLIC POWDER
title MANUFACTURING METHOD OF SINTERED MAGNET
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