| 摘要 |
<p>The present invention refers to a method for treating in continuous the surface of a laminate made of stainless steel that comprises at least the steps of: (a) making said laminate (11) pass in continuous in a tank (12) containing an aqueous electrolytic solution (SE) of sulfuric acid, said laminate (11) passing between at least two electrodes (150, 170) immersed in said electrolytic solution (SE) and arranged in a direction substantially parallel to the movement direction of the laminate (11) and having a length Le measured along said direction, said electrodes (150, 170) facing the opposite faces of said laminate (11) and being arranged in a position facing each other, (b) subjecting said laminate (11) to an electrolytic pickling treatment by applying an alternating current having a frequency f comprised between 5 Hz and 150 Hz, said frequency f being correlated to said forward velocity v of the laminate (11) and to said length Le of said electrodes (150, 170) by the relation F≥(A*v)/Le, where A is a rational number greater than 1, preferably greater than 2; (c) subjecting said electrolytically pickled laminate (11) to a surface finishing and a surface passivation treatment.</p> |
