FERRITIC STAINLESS STEEL SHEET, COVER AND METHOD OF MANUFACTURING FERRITIC STAINLESS STEEL SHEET Russian patent published in 2019 - IPC B21B1/22 

FIELD: metallurgy.

SUBSTANCE: invention relates to the field of rolling sheets. Ferritic stainless steel sheet is subjected to training using a roll with a matte surface after finishing cold rolling and light annealing. Improving the cleanability, increasing the anti-glare properties and hydrophilicity is ensured by the fact that the arithmetic average roughness Ra in the direction, perpendicular to the rolling direction, on the surface of the steel sheet is 0.2 mcm or more and 1.2 mcm or less. In addition, the transfer ratio of the dull pattern to the surface of the steel sheet is 15 % or more and 70 % or less. In addition, on the surface of the steel sheet, microdetaching is formed with a depth of 0.5 mcm or more and a cross-sectional area of their open zones, composing 10² microns or more, having a density of 10.0 or less by 0.01 mm², the proportion of the cross-sectional area of the open zones of micro hollows on the surface of the steel sheet is 1.0 % or less. In addition, the film formed on the surface of the steel sheet is formed from oxide, containing SiO₂ as the main component, and this oxide contains at least Si, N, Al, Mn, Cr, Fe, Nb, Ti and O as film-forming elements, besides C, the content of Si is 10 at. % or more, and the content of N is 10 at. % or less.

EFFECT: provides improved cleanability, increased anti-glare properties and hydrophilicity.

8 cl, 1 dwg, 4 tbl