Surface treatment method for conductor roll for electroplating and conductor roll for electroplating

摘要

An object of the present invention is to suppress adhesion of foreign matter derived from a plating solution and a metal derived from a plated steel plate and an oxide of the metal on the surface of a conductor roll. A surface treatment method for surface treatment of a roll surface of a conductor roll for electroplating, which is a surface treatment solution in which graphite is dispersed in a mixed solution of an aqueous solution of aluminum phosphate and colloidal silica, which is the surface treatment method. When the treatment solution is 100% by mass, the content of aluminum phosphate is 3% by mass to 14% by mass, the content of silica is 7% by mass to 37% by mass, and the content of graphite is at least 4% by mass or more The surface treatment solution whose concentration is adjusted to the above is supplied to the surface of the roll, and is fired. [Selected figure] Figure 1