A wet blast machine for cleaning or preparing surfaces comprises: a treatment source for providing a pressurised mixture of treatment material; a nozzle, the nozzle comprising: an inlet for receiving the pressurised mixture of treatment material; an outlet for ejecting the pressurised mixture; and at least one hole in a wall of the nozzle, the hole for feeding one or more products into the nozzle such that one or more surfaces of the product are exposed to the treatment material whilst within the nozzle, allowing for a more efficient wet blast of the products.

A method to form a phosphate coating on a steel wire, the method including: continuously forming a phosphate coating on a steel wire before being subjected to cold forming; and a descaling of jetting slurry including grit-like abrasive particles onto the steel wire before forming the phosphate coating, thereby producing a new surface on the steel wire. The method can further include a preheating of the steel wire after the descaling and before the coating treatment. The method makes it possible to form a phosphate coating on a steel wire in a short time with high productivity without causing significant forming deterioration on the surface of the steel wire.

A shaving die for cutting the surface layer of a wire is provided with a circular cutting blade and a plurality of protrusions. The wire is inserted into the circular cutting blade so that the surface layer of the wire is cut. The protrusions are provided at positions around the cutting blade so as to come into contact with the surface layer of the wire that has been cut by the cutting blade.

A shaving die for cutting the surface layer of a wire is provided with a circular cutting blade and a plurality of protrusions. The wire is inserted into the circular cutting blade so that the surface layer of the wire is cut. The protrusions are provided at positions around the cutting blade so as to come into contact with the surface layer of the wire that has been cut by the cutting blade.

The steel wire surface treatment method of the present invention is a method for continuously treating the surface of a steel wire and includes: a descaling step P2 in which scale adhering to the surface of a steel wire is removed by subjecting the surface of the steel wire to wet blasting; a coating film treatment step P5 in which a coating film is formed on the surface of the steel wire after completion of the descaling step P2; and a water amount controlling step P3 in which the water amount on the surface of the steel wire immediately before performing the coating film treatment step P5 is adjusted to a prescribed water amount.

The steel wire surface treatment method of the present invention is a method for continuously treating the surface of a steel wire and includes: a descaling step P2 in which scale adhering to the surface of a steel wire is removed by subjecting the surface of the steel wire to wet blasting; a coating film treatment step P5 in which a coating film is formed on the surface of the steel wire after completion of the descaling step P2; and a water amount controlling step P3 in which the water amount on the surface of the steel wire immediately before performing the coating film treatment step P5 is adjusted to a prescribed water amount.

Provided are a method and a device for descaling that make it possible to effectively remove oxide scale from the surface of a metal wire. The descaling includes spraying the surface of a metal wire (W) with a mixture (9) of water and hard particles from a plurality of nozzles (8). The plurality of nozzles (8) include a plurality of self-cleaning nozzles that spray at a spray angle () of 90 or smaller with respect to the metal wire (W). The spray angle () is the angle formed by the central axis (X) of the spraying and a vector (Vt) indicating a conveyance direction that originates at the intersection (P) of the central axis (X) and the metal wire surface.

Provided are a method and a device for descaling that make it possible to effectively remove oxide scale from the surface of a metal wire. The descaling includes spraying the surface of a metal wire (W) with a mixture (9) of water and hard particles from a plurality of nozzles (8). The plurality of nozzles (8) include a plurality of self-cleaning nozzles that spray at a spray angle () of 90 or smaller with respect to the metal wire (W). The spray angle () is the angle formed by the central axis (X) of the spraying and a vector (Vt) indicating a conveyance direction that originates at the intersection (P) of the central axis (X) and the metal wire surface.

Device for scrubbing a metal wire, including means for feeding and running the wire (F), at least two pairs of rotary brushes (21, 22) having a radius r, the axes of which are substantially mutually parallel and perpendicular to the direction in which the wire runs, application means, suitable for contacting the brushes with the wire via the circumferences thereof in order to exert a given pressure on the wire (F) while the device is operating, and means (31, 32) of adjusting the tension of the wire are provided directly upstream and downstream of the assembly of brushes.

Device for scrubbing a metal wire, including means for feeding and running the wire (F), at least two pairs of rotary brushes (21, 22) having a radius r, the axes of which are substantially mutually parallel and perpendicular to the direction in which the wire runs, application means, suitable for contacting the brushes with the wire via the circumferences thereof in order to exert a given pressure on the wire (F) while the device is operating, and means (31, 32) of adjusting the tension of the wire are provided directly upstream and downstream of the assembly of brushes.