FIELD: metallurgy; instrumentation technologies; relay engineering; electric machine industry; medicine; other industries; methods of production of the hard magnetic alloys.
SUBSTANCE: the invention is pertaining to metallurgy, in particular, to production of the hard magnetic alloys made on the basis of Fe-Cr-Co system, which are used in auto-instrumentation technologies, relay engineering, electric machine industry, medicine, etc. For increasing the magnetic properties of the treated permanent magnets by 3-5 % as well as the product yield the magnet made out of the alloy 25X15КА is exposed to the homogenization, hardening, thermomagnetic (thermal) treatment, multi-stage tempering and the thermal-cycle treatment in the final stage of the temperature interval of 510-470°С in the amount of 3-5 cycles at the final stage of the tempering.
EFFECT: the invention ensures the increased magnetic properties of the treated permanent magnets by several percents.
1 ex, 6 dwg, 6 tbl
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