Device and method for passivating surface of stainless steel strand

The invention relates to the field of steel strand production, in particular to a stainless steel strand surface passivation treatment device and method.The device comprises a rack, and the upper end of the rack is sequentially provided with a roller, a direct-current stabilized power source, an acid pickling mechanism, a fine washing mechanism and a drying mechanism from left to right; a pay-off reel is arranged on the left side of the rack, and a tensioning mechanism, a wire arranging mechanism and a take-up reel are sequentially arranged on the right side of the rack. Wherein the surface of the stainless steel strand can generate microstructure change through the combination of the electrolysis effect and the carbon fiber brush, and the carbon fiber brush serving as one of electrodes can promote metal ion precipitation or deposition in a local area to form a tiny concave or convex structure, so that the surface roughness and morphology are improved, and the service life of the stainless steel strand is pro