METHOD FOR PRODUCING VARIOUS CURIE-TEMPERATURE SINTER PRODUCTS OF DECREASED HARDNESS

Easily and economically workable powder metallurgical prods. with different Curie points and reduced hardness are produced from an initial powder mixt. comprising ferro-magnetic metals, pref. nickel and/or iron with a non-ferromagnetic metal, pref. copper, and contg. not more than 0.05 wt.% Se, B or...

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Bibliographic Details
Main Authors PATAKY,BALAZS,HU, PALMAI,ZOLTAN,HU, KOCSO,ILLES,HU
Format Patent
LanguageEnglish
Published 28.06.1985
Edition4
Subjects
CASTING
MAKING METALLIC POWDER
MANUFACTURE OF ARTICLES FROM METALLIC POWDER
PERFORMING OPERATIONS
POWDER METALLURGY
TRANSPORTING
WORKING METALLIC POWDER
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Summary:Easily and economically workable powder metallurgical prods. with different Curie points and reduced hardness are produced from an initial powder mixt. comprising ferro-magnetic metals, pref. nickel and/or iron with a non-ferromagnetic metal, pref. copper, and contg. not more than 0.05 wt.% Se, B or Te. - The initial powder mixt is compressed at 3000-6000 atmospheres pressure and sintered at 1150-1350 deg. C. Cooling from the sintering temp. to 800 deg. C is controlled at a rate of 20-50 deg. C per minute, from 800 deg. C to 600 deg. C at a rate of 5-1 m deg. C per minute and below 600 deg. C at a rate of 30-60 deg. C per minute.
Bibliography:Application Number: HU19830003592