Abstract: A method is provided. The method includes providing a steel substrate having two faces coated by dipping the substrate in a bath, altering layers of magnesium oxide or magnesium hydroxide formed on the outer surfaces of the metal coatings by applying mechanical forces, rinsing and drying the outer surfaces, applying a conversion solution on the outer surfaces and painting the outer surfaces of the metal coatings. A metal sheet is also provided.

Abstract: An installation for hot dip coating a metal strip is provided. The installation includes a device for moving the metal strip along a path, a pot for containing a melt bath and a wiping system including at least two nozzles placed on either side of the path downstream the pot. The wiping system has a box with a lower confinement part confining an atmosphere around the metal strip upstream of said nozzles and an upper confinement part confining the atmosphere around the metal strip downstream of the nozzles, first moving means for vertically moving the lower confinement part with respect to the pot and second moving means for vertically moving the upper confinement part with respect to both the pot and the lower confinement part. The nozzles are vertically movable relative to the pot.

Abstract: A hot-dip-coated, non-skin-passed, cold-rolled metal strip is provided. The metal strip is obtained by passing the metal strip through a bath of molten metal, wiping the coated metal strip with nozzles that spray a gas on each side of the strip and making the strip pass through a confinement zone. The metal coating of the metal strip includes a waviness Wa0.8 of less than or equal to 0.70 ?m, 0.2 to 8% by weight of aluminum and magnesium in the following proportions: 0.1 to 8% by weight of magnesium for an aluminum content equal to or greater than 0.2% but less than 2% by weight or a content greater than 5% but less than or equal to 8% by weight of magnesium for an aluminum content equal to or greater than 2% but less than or equal to 8% by weight, and up to 0.3% by weight of additional elements, the balance being zinc and inevitable impurities. Metal parts are also provided.

Abstract: A metal sheet including a substrate having at least one face coated by a metallic coating is provided. The metallic coating has an aluminium content by weight tAl of between 3.6 and 3.8% a magnesium content by weight tMg of between 2.7 and 3.3%. The coating has a microstructure comprising a lamellar matrix of eutectic ternary Zn/Al/MgZn2 and possibly: dendrites of Zn with an accumulated surface content exceeding 5.0%, flowers of binary eutectic of Zn/MgZn2 with an accumulated surface content less than or equal to 15.0%, dendrites of binary eutectic Zn/Al surface with an accumulated surface content of less than 1.0% islets of MgZn2 with an accumulated surface content below 1.0%.

Abstract: The invention deals with a hot-dip galvanized or galvannealed steel sheet wherein, the composition of the steel sheet comprises, by weight: 0.01?C?0.22%, 0.50?Mn?2.0%, 0.2?Si?3.0%, 0.005?Al?2.0%, Mo<1.0%, Cr?1.0%, P<0.02%, Ti?0.20%, V?0.40%, Ni?1.0%, Nb?0.20%, the balance of the composition being iron and unavoidable impurities resulting from the smelting, and the steel sheet comprises a layer of an internal nitride of at least one type of nitride selected from a Si nitride, Mn nitride, Al nitride, complex nitride comprising Si and Mn, or Al and Si, or Al and Mn, or complex nitride comprising Si, Mn and Al, said steel sheet comprising no further outer layer of iron nitride.

Abstract: A method is provided. The method includes providing a steel substrate having two faces coated by dipping the substrate in a bath, altering layers of magnesium oxide or magnesium hydroxide formed on the outer surfaces of the metal coatings by applying an acid solution, optionally a conversion solution with a pH between 1 and 2, and/or mechanical forces, and painting the outer surfaces of the metal coatings. Additional methods and a metal sheet are also provided.

Abstract: One subject of the invention is a process for manufacturing a metal strip having a metal coating for corrosion protection, comprising the steps consisting in: making the metal strip pass through a bath of molten metal, comprising 0.2 to 8% by weight of aluminum and magnesium in the following proportions: 0.1 to 8% by weight of magnesium for an aluminum content equal to or greater than 0.2% but less than 4% by weight or a content greater than 5% but less than or equal to 8% by weight of magnesium for an aluminum content equal to or greater than 4% but less than or equal to 8% by weight, and comprising up to 0.

Abstract: The present invention provides a method for manufacturing a metal sheet. In this method, at least one of the following equations is satisfied: Z d + 18 ? ? ln ? ( Z d ) < 8 ? ? ln ? ( P V ) - 27.52 ( A ) fO 2 < 2.304 · 10 - 3 ( 27.52 + Z d + 8 ? ? ln ? ( V P ? ( Z d ) 2.25 ) ) 2 ( B ) wherein: Z is the distance between the metal sheet and the nozzle along the main ejection direction (E), Z being expressed in mm, d is the average height of the outlet of the nozzle along with the running direction of the metal sheet in front of the nozzle, d being expressed in mm, V is the running speed of the metal sheet in front of the nozzle, V being expressed in m·s?1, P is the pressure of the wiping gas in the nozzle, P being expressed in N·m?2, and fO2 is the volume fraction of oxygen in the wiping gas. A metal sheet, part and land motor vehicle are also provided.

Abstract: A method for producing a metal sheet is provided. The method includes providing a steel substrate having two faces, depositing a metal coating on each face by dipping the substrate in a bath, cooling the metal coatings, altering layers of magnesium oxide or magnesium hydroxide formed on the outer surfaces of the metal coatings, and depositing a layer of oil on the outer surfaces of the metal coatings.

Abstract: One subject of the invention is a process for manufacturing a metal strip having a metal coating for corrosion protection, comprising the steps consisting in: making the metal strip pass through a bath of molten metal, comprising 0.2 to 8% by weight of aluminum and magnesium in the following proportions: 0.1 to 8% by weight of magnesium for an aluminum content equal to or greater than 0.2% but less than 4% by weight or a content greater than 5% but less than or equal to 8% by weight of magnesium for an aluminum content equal to or greater than 4% but less than or equal to 8% by weight, and comprising up to 0.

Abstract: The subject of the invention is a process for manufacturing a metal strip having a metal coating for corrosion protection, comprising the steps consisting in: making the metal strip pass through a bath of molten metal; then wiping the coated metal strip by means of nozzles that spray a gas on each side of the strip, said gas having an oxidizing power lower than that of an atmosphere consisting of 4% oxygen by volume and 96% nitrogen by volume; and then making the strip pass through a confinement zone bounded: at the bottom, by the wiping line and the upper faces of the wiping nozzles, at the top, by the upper part of two confinement boxes placed on each side of the strip, just above the nozzles, and having a height of at least 10 cm in relation to the wiping line and on the sides, by the lateral parts of the confinement boxes, the atmosphere in the confinement zone having an oxidizing power lower than that of an atmosphere consisting of 4% oxygen by volume and 96% nitrogen by volume and higher than that

Abstract: The invention relates to a process for manufacturing a metal strip having a metallic corrosion protection coating, comprising the steps consisting in: making the metal strip pass through a bath of molten metal comprising between 2 and 8 wt % aluminum, 0 to 5 wt % magnesium and up to 0.3 wt % addition elements, the balance being zinc and inevitable impurities, said bath being maintained at a temperature between 350 and 700° C.; then wiping the coated metal strip by means of nozzles spraying a gas on either side of the strip; and then cooling the coating in a controlled manner until it has completely solidified, said cooling being carried out at a rate less than 15° C./s between the temperature on leaving the wiping unit and the start of solidification and then at a rate greater than or equal to 15° C./s between the start and end of its solidification, and also to a metal strip that can be obtained by this process and to a metal part obtained by deformation of this strip.

Abstract: The invention deals with a hot-dip galvanized or galvannealed steel sheet wherein, the composition of the steel sheet comprises, by weight: 0.01?C?0.22%, 0.50?Mn?2.0%, 0.2?Si?3.0%, 0.005?Al?2.0%, Mo<1.0%, Cr?1.0%, P<0.02%, Ti?0.20%, V?0.40%, Ni?1.0%, Nb?0.20%, the balance of the composition being iron and unavoidable impurities resulting from the smelting, and the steel sheet comprises a layer of an internal nitride of at least one type of nitride selected from a Si nitride, Mn nitride, Al nitride, complex nitride comprising Si and Mn, or Al and Si, or Al and Mn, or complex nitride comprising Si, Mn and Al, said steel sheet comprising no further outer layer of iron nitride.

Abstract: The invention deals with a process for manufacturing a hot-dip galvannealed steel sheet having a TRIP microstructure, and comprising, by % by weight, 0.01?C?0.22%, 0.50?Mn?2.0%, 0.5<Si?2.0%, 0.005?Al?2.0%, Mo<0.01%, Cr?1.0%, P<0.02%, Ti?0.20%, V?0.40%, Ni?1.0%, Nb?0.20%, the balance of the composition being iron and unavoidable impurities resulting from the smelting, said process comprising the steps consisting in:—oxidizing said steel sheet in order to form a layer of iron oxide on the surface of the steel sheet, and to form an.