The present invention provides a method for producing a sheet. The method includes providing a substrate, depositing a metal coating over at least one surface by dipping the substrate in a bath in order to obtain the sheet, wiping the metal coating by means of at least one nozzle projecting through at least one outlet a wiping gas onto the metal coating, the sheet being run in front of the nozzle, the wiping gas being ejected from the nozzle along a primary direction of ejection (E), a confinement box delimiting a confined zone at least downstream of the zone of impact (I) of the wiping gas on the sheet and solidifying the metal coating. The method satisfying: $\frac{Z}{d}\le 12\mathrm{and}{f}_{O_2}\le \frac{{10}^{-4}}{W^2}\left(0.63+\sqrt{0.4+{94900}^{*}{W}^2}\right)\mathrm{with}W=\frac{\sqrt{\mathrm{PdZ}}}{V}.$

A method and a device for coating a metal strip with a coating material that is still liquid at first. During the coating, the coated metal strip runs through a roller pair. One of the rollers of the roller pair can be adjusted toward the other as a correction roller in order to eliminate a possible curvature of the metal strip. Then the metal strip runs through a blow-off apparatus for blowing off surplus coating. In order to prevent an uneven thickness distribution of the coating on the metal strip even when the correction roller of the roller pair has been adjusted, the actual position of the metal strip is controlled to a specified setpoint center position in the slot of the blow-off apparatus by an appropriate movement of the blow-off apparatus.

A method and a device for coating a metal strip with a coating material that is still liquid at first. During the coating, the coated metal strip runs through a roller pair. One of the rollers of the roller pair can be adjusted toward the other as a correction roller in order to eliminate a possible curvature of the metal strip. Then the metal strip runs through a blow-off apparatus for blowing off surplus coating. In order to prevent an uneven thickness distribution of the coating on the metal strip even when the correction roller of the roller pair has been adjusted, the actual position of the metal strip is controlled to a specified setpoint center position in the slot of the blow-off apparatus by an appropriate movement of the blow-off apparatus.

When a portion for measuring the plating adhesion amount reaches an upstream side position, plating adhesion amount estimation values are calculated by using a plating adhesion amount estimation expression at positions away from a position that faces the distance sensors, that is, the upstream side position, by strip-width direction distances, of the surfaces of the steel strip. When the portion for measuring the plating adhesion amount reaches a downstream side position, the strip-width direction distances of the plating adhesion amount meters are matched to the strip-width direction distances, and the plating adhesion amount actual measurement values are obtained. The plating adhesion amount estimation expression is corrected on the basis of the differences between the plating adhesion amount estimation values and the plating adhesion amount actual measurement values. Accordingly, the control accuracy of the plating adhesion amount is improved.

When a portion for measuring the plating adhesion amount reaches an upstream side position, plating adhesion amount estimation values are calculated by using a plating adhesion amount estimation expression at positions away from a position that faces the distance sensors, that is, the upstream side position, by strip-width direction distances, of the surfaces of the steel strip. When the portion for measuring the plating adhesion amount reaches a downstream side position, the strip-width direction distances of the plating adhesion amount meters are matched to the strip-width direction distances, and the plating adhesion amount actual measurement values are obtained. The plating adhesion amount estimation expression is corrected on the basis of the differences between the plating adhesion amount estimation values and the plating adhesion amount actual measurement values. Accordingly, the control accuracy of the plating adhesion amount is improved.

The device has a gas flow levelling pipe (3), which defines a continuous curved development surface (Z), at comprising a collector (4) to which a nozzle (10) is fixed, a delivery manifold (1), in order to introduce pressurized gas into the pre-chamber (2) through the holes (12), a first holed partition (5) and a second holed partition (6) within the levelling pipe (3), arranged perpendicular to the curved development surface (Z) of the pipe (3).

The device has a gas flow levelling pipe (3), which defines a continuous curved development surface (Z), at comprising a collector (4) to which a nozzle (10) is fixed, a delivery manifold (1), in order to introduce pressurized gas into the pre-chamber (2) through the holes (12), a first holed partition (5) and a second holed partition (6) within the levelling pipe (3), arranged perpendicular to the curved development surface (Z) of the pipe (3).

Provided is an alloy-plated steel material that can be used in home appliances, automobiles, and construction materials and the like and, more particularly, to an alloy-plated steel material having excellent corrosion resistance and high surface quality.

Device (1) for solidifying a coating layer hot deposited on a wire (108), corresponding installation and method. The device comprises a cooling liquid injection chamber (2) with a liquid inlet (6) and a wire inlet (4), a cooling chamber (8) with a liquid outlet (12) and a wire outlet (10), and a partition (14) arranged between the injection and cooling chambers (2, 8), comprising a wire passage (16). It also has a conduit (22) for separating the wire (108). The partition (14) comprises channels (18) fluidically connecting the injection chamber (2) with the cooling chamber (8) and leading into the center of the wire passage (16) in an eccentric manner and being inclined forming an angle (α) with respect to a longitudinal direction (L). This directs a jet of cooling liquid on the wire (108) in the direction from the injection chamber (2) towards the cooling chamber (8).

Disclosed is a steel sheet for hot press forming, which includes: a base steel sheet; and a plating layer disposed on the base steel sheet and including a diffusion layer and a surface layer that are sequentially laminated, wherein the diffusion layer includes an Fe—Al alloy layer and an Fe—Al intermetallic compound layer that are sequentially disposed on the base steel sheet and each include silicon, and an area fraction of the Fe—Al intermetallic compound layer with respect to the diffusion layer is 84.5% to 98.0%.