PROCESS FOR PRODUCTION OF ANISOTROPIC ELECTRIC STEEL

FIELD: ferrous metallurgy. SUBSTANCE: process includes smelting, hot rolling, decarbonization, double cold rolling, retarded heating during primary recrystallization period, and final high- temperature annealing. To increase magnetic properties and stabilize secondary recrystallization of steel, hea...

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Bibliographic Details
Main Authors KAZADZHAN L.B, NOSOV A.D, NOSOV S.K, SHARIPOV R.F, TSYRLIN M.B, LOBANOV M.L
Format Patent
LanguageEnglish
Published 20.09.1999
Edition6
Subjects
CHEMISTRY
GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS
MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS
METALLURGY
METALLURGY OF IRON
MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS
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Summary:FIELD: ferrous metallurgy. SUBSTANCE: process includes smelting, hot rolling, decarbonization, double cold rolling, retarded heating during primary recrystallization period, and final high- temperature annealing. To increase magnetic properties and stabilize secondary recrystallization of steel, heating temperature of hot rolling (T) is set in dependence of aluminum content in steel expressed by relationship: T = 1190 + 4x10% Al . Coiling is accomplished at 520- 570 C. Retarded heating is effected (i) after final cold rolling with rate 5- 15 C/hr over a temperature range of 400 to 700 C with probability of decarbonization in smelting stage or (ii) after heat treatment of strip plate with initial, intermediate, or final thickness and probability of addition of 0.2-0.7% of copper to steel. EFFECT: enhanced process efficiency. 3 cl, 2 tbl
Bibliography:Application Number: RU19960116385