Method for preparing powder metallurgical sintered product

It is disclosed a method for preparing a large-sized powder metallurgical sintered product having a superior characteristic by charging mixtures of three types of metallic powder composed of coarse particles, middle particles and fine particles into the molding die while vibrating it, heating the ch...

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Main Authors TAKAJO, SHIGEAKI RESEARCH LABORATORIES, OHTSUBO, HIROSHI RESEARCH LABORATORIES, YOSHIMURA, KEISUKE CHIBA WORKS KAWASAKI, KAWANO, MASAKI RESEARCH LABORATORIES, OGURA, KUNIAKI RESEARCH LABORATORIES, MAEDA, YOSHIAKI CHIBA WORKS KAWASAKI
Format Patent
LanguageEnglish
French
German
Published 31.08.1994
Edition5
Subjects
ALLOYS
CASTING
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
MAKING METALLIC POWDER
MANUFACTURE OF ARTICLES FROM METALLIC POWDER
METALLURGY
PERFORMING OPERATIONS
POWDER METALLURGY
TRANSPORTING
TREATMENT OF ALLOYS OR NON-FERROUS METALS
WORKING METALLIC POWDER
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Summary:It is disclosed a method for preparing a large-sized powder metallurgical sintered product having a superior characteristic by charging mixtures of three types of metallic powder composed of coarse particles, middle particles and fine particles into the molding die while vibrating it, heating the charged material together with the molding die, sintering them, and infiltrating metal of low melting point into the sintered body. According to this method, it is possible to get a large-sized sintered body having a superior strength and surface smoothness or a sintered body prohibiting any cracks or slits by arranging the proper particle size.
Bibliography:Application Number: EP19890306313