PRODUCTION OF SILICON-FREE DYNAMO STEEL SHEETS Russian patent published in 2014 - IPC B21B1/28 

FIELD: metallurgy.

SUBSTANCE: invention relates to metallurgy and can be used for production of isotropic electric steel 0.2-1.8 mm thick sheets. Proposed method comprises feed of hot-rolled etched strip to six-stand continuous mill, reduction at stands and cold rolling. Steel sheet higher flatness is ensured by reduction at stands is set in compliance with the following accumulated relative reductions: 1^st stand - to 43%; 2^nd stand - 45-54%; 3^rd stand - 56-66%; 4^th stand - 68-74%; 5^th stand - 76-78% and 6^th stand - at least 80%.

EFFECT: higher flatness of steel sheet.

1 dwg, 1 tbl, 1 ex