Abstract: A stain removal device and a stain removal method for removing stain, such as scale residue or smut from the surface of a wire material by a cord-shaped member, includes a wire material winding device for winding a wire material on the surface of which the stain is deposited, a cord-shaped member which is wound on the wire material and wipes off stain attached on the surface of a wire material by a sliding movement relative to the wire material, and a cord-shaped member feed device for feeding the cord-shaped member relative to the wire material. The stain removal method includes linear feeding of a wire material, winding a cord-shaped member on the wire material, wiping off the stain attached on the surface of the wire material by rolling up the cord shaped member, and blowing air onto the surface of the wire material to blow away stain remaining thereon.

Abstract: A problem to be solved is to provide a method for regenerating plating liquid from plating waste liquid in a simple and easy way and a plating method utilizing the regenerating method.

Abstract: A problem to be solved is to provide a method for regenerating plating liquid from plating waste liquid in a simple and easy way and a plating method utilizing the regenerating method.

Abstract: A surface treatment device and a surface treatment method for a long wirelike article, capable of grinding the surface of the long wirelike article efficiently with powder by cyclically repeating pressing and release of an elastic tube filled with the powder. At least one surface treatment unit includes a tube filled with powder which can be supplied to and discharged from the tube, and having a long wirelike article movably passing through the powder, a pressing mechanism for cyclically pressing and releasing the tube, and a feed mechanism for moving the long wirelike article passing through the powder.

Abstract: A stain removal device and a stain removal method for removing stain, such as scale residue or smut from the surface of a wire material by a cord-shaped member, includes a wire material winding device for winding a wire material on the surface of which the stain is deposited, a cord-shaped member which is wound on the wire material and wipes off stain attached on the surface of a wire material by a sliding movement relative to the wire material, and a cord-shaped member feed device for feeding the cord-shaped member relative to the wire material. The stain removal method includes linear feeding of a wire material, winding a cord-shaped member on the wire material, wiping off the stain attached on the surface of the wire material by rolling up the cord shaped member, and blowing air onto the surface of the wire material to blow away stain remaining thereon.

Abstract: The problem addressed by the present invention is to provide a method for facilitating the regenerating a waste plating solution as a plating solution. This method for regenerating an acidic waste plating solution containing, as ions, Fe and at least one plating metal element selected from the group consisting of Cu, Ni, Zn, Co, and Mn by removing Fe therefrom is characterized in having an addition step in which phytic acid is added to the waste plating solution to yield a phytic-acid-containing solution in which Fe ions are precipitated, and a removal step in which the precipitate is removed from the phytic-acid-containing solution to yield a regenerated plating solution.

Abstract: The problem addressed by the present invention is to provide a method for facilitating the regenerating a waste plating solution as a plating solution. This method for regenerating an acidic waste plating solution containing, as ions, Fe and at least one plating metal element selected from the group consisting of Cu, Ni, Zn, Co, and Mn by removing Fe therefrom is characterized in having an addition step in which phytic acid is added to the waste plating solution to yield a phytic-acid-containing solution in which Fe ions are precipitated, and a removal step in which the precipitate is removed from the phytic-acid-containing solution to yield a regenerated plating solution.

Abstract: A problem to be solved is to provide a method for regenerating plating liquid from plating waste liquid in a simple and easy way and a plating method utilizing the regenerating method.

Abstract: A surface treatment device and a surface treatment method for a long wirelike article, capable of grinding the surface of the long wirelike article efficiently with powder by cyclically repeating pressing and release of an elastic tube filled with the powder. At least one surface treatment unit includes a tube filled with powder which can be supplied to and discharged from the tube, and having a long wirelike article movably passing through the powder, a pressing mechanism for cyclically pressing and releasing the tube, and a feed mechanism for moving the long wirelike article passing through the powder.