FIELD: metallurgy.
SUBSTANCE: invention relates to metallurgy. For producing oriented-grain sheet of electrical steel with low iron wastage indicators, due to grinding of magnetic domain structure of steel sheet contains linear grooves formed on its surface at an angle of 45° or less to the direction perpendicular to rolling direction, in the bottom part of which number of fine grains with length of 1 mm or less in rolling direction is equal to 10 % or less, including 0 %, that testifies on absence of fine grains; wherein each groove is provided with forsterite film in number of 0.6 g/m2 or more in terms of Mg coating amount per one steel sheet surface, and the average value of angles formed by axes <100> of secondary recrystallized grains facing in rolling direction, and steel sheet rolling plane is 3° or less.
EFFECT: disclosed is method of oriented-grain electric steel sheet producing.
9 cl, 5 dwg, 3 tbl, 2 ex
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Authors
Dates
2016-10-27—Published
2012-04-26—Filed