METHOD FOR PRODUCTION OF ISOTROPIC ELECTRICAL STEEL Russian patent published in 1994 - IPC

Abstract RU 2024629 C1

FIELD: metallurgy. SUBSTANCE: method improving magnetic properties comprises the following steps. Producing isotropic electrical steel in the shape of a steel strip of a preset thickness by hardening in liquid state, using a single- or double-roll method which increases silicon content to 6 wt.-%. Produced strip of high-silicon electrical steel is annealed in vacuum then cold rolled with a 30-70% reduction which is followed by irradiating it with a laser beam at a power density of 0,5-4,0 kWt/mm² . The final step is completing recrystallizing annealing in vacuum at 550-1200 C. EFFECT: higher efficiency. 1 tbl

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RU 2 024 629 C1

Authors

Malinina R.I.

Zvonkov S.D.

Anisimova M.V.

Nuzhdin G.A.

Dates

1994-12-15—Published

1990-12-25—Filed