Arcelormittal

Sollac

Usinor

Arcelor France

Arcelormittal France

Didier Dauchelle

Laurent Gacher

Yves Prigent

Hugues Baudin

Patrice Lucas

Jean-Michel Mataigne

Florence Bertrand

Hubert Saint-Raymond

José Veg

Jose Veg

A steel part includes a steel sheet substrate and a coating on at least one surface of the steel sheet substrate. The coating includes between 0.2 and 0.7% by weight of Al, with a remainder of the metal coating being Zn and inevitable impurities. The steel sheet substrate and the coating have at least one deformation. An outer surface of the coating has a waviness Waof less than or equal to 0.43 &#x3bc;m.

Method for manufacturing a metal sheet with a ZnAl coating and with optimized wiping, corresponding metal sheet, part and vehicle

An apparatus for the continuous hot dip coating of a metal strip is provided. The apparatus includes a vessel intended to contain a liquid metal bath, a bottom roller and a displacement casing for the metal strip. The casing includes an upper portion and a lower portion. The lower portion includes a pouring box delimiting at least two liquid metal pouring compartments. Each pouring compartment is inwardly delimited by an inner wall including an upper rim. The casing is provided with the pouring box, is rotatable relative to the metal strip around a first rotation axis and the pouring box is rotatable relative to the upper portion of the casing around a second rotation axis. A method for coating the metal sheet is also provided.

Apparatus for the continuous hot dip coating of a metal strip including rotatable pouring box and associated method

An apparatus for the continuous hot dip coating of a metal strip is provided The apparatus includes a vessel intended to contain a liquid metal bath, a bottom roller and a scroll casing of the metal strip. The casing includes, at its lower end, a pouring box delimiting a front pouring compartment for liquid metal and a rear pouring compartment for liquid metal. Each pouring compartment is inwardly delimited by an inner wall and outwardly delimited by an outer wall. The outer wall of the rear pouring compartment forms, with the passage plane of the metal strip, an angle greater than or equal to 15&#xb0; in the usage configuration. A method is also provided.

Apparatus for the continuous hot dip coating of a metal strip with rear pouring compartment optimally angled with the passage plane of the metal strip

The present invention provides a method for manufacturing a metal sheet. In this method, at least one of the following equations is satisfied: wherein:

The present invention provides a deformed part created by forming a coated metal sheet into a part, the coated metal sheet comprising a steel substrate, at least one face of which is coated with a metal coating deposited by dipping the substrate in a bath, said coating comprising between 0.2 and 0.7% by weight of Al, the remainder of the metal coating being Zn and inevitable impurities, wherein an outer surface of a metal coating of the deformed part has a waviness Wa0.8 of less than or equal to 0.43 &#x3bc;m.

Deformed part and vehicle

The present invention provides a method for manufacturing a metal sheet. In this method, at least one of the following equations is satisfied: 

Metal sheet with a ZnAl coating

A process for the continuous dip-coating of a metal strip () in a tank () containing a liquid metal bath (), in which process the metal strip () is made to run continuously through a duct (), the lower part of which is immersed in the liquid metal bath (), in order to define with the surface of the bath a liquid seal (). In the region where the strip () leaves the liquid metal bath (), the liquid metal is isolated from the surface of the bath in an isolating enclosure (), the metal oxide particles and intermetallic compound particles are recovered by the liquid metal flowing from this region into the enclosure (), and the particles are extracted from this enclosure (). Also, a plant for implementing the process.

Method and installation for dip coating of a metal strip, in particular of a steel strip

A process for the continuous dip-coating of a metal strip () in a tank () containing a liquid metal bath (), in which process the metal strip () is made to run continuously through a duct (), the lower part of which is immersed in the liquid metal bath (), in order to define with the surface of the bath a liquid seal (). In the region where the strip () leaves the liquid metal bath (), the liquid metal is isolated from the surface of the bath in an isolating enclosure (), and the metal oxide particles and intermetallic compound particles are recovered by the liquid metal flowing from this region into the enclosure (), and the particles are extracted from this enclosure (). Also, a plant for implementing the process.

Method and installation for dip coating of a metal strip, in particular a steel strip

A process for the continuous dip-coating of a metal strip () in a tank () containing a liquid metal bath (), in which process the metal strip () is made to run continuously through a duct (), the lower part () of which is immersed in the liquid metal bath () in order to define with the surface of the bath a liquid seal (). A natural flow of the liquid metal from the surface of the liquid seal () is set up in two overflow compartments () made in the duct () and each having an internal wall which extends the duct () in its lower part, and the level of liquid metal in the compartments is maintained at a level below the surface of the liquid seal (). A plant for implementing the process.

Method and installation for hot process and continuous dip coating of a metal strip

A process for the continuous dip-coating of a metal strip () in a tank () containing a liquid metal bath (), in which process the metal strip () is made to run continuously through a duct (), the lower part () of which is immersed in the liquid metal bath () in order to define with the surface of the said bath a seal (). A natural flow of the liquid metal from the surface of the liquid seal is set up in an overflow compartment () made in the duct () and having an internal wall which extends the duct () in its lower part, and the level of liquid metal in the compartment () is maintained at a level below the surface of the liquid seal (). Also, a plant for implementing the process.

Method and installation for dip coating of a metal strip

The subject of the invention is a plant for the continuous dip-coating of a metal strip (), of the type comprising a tank () containing a liquid metal bath (), a duct () through which the metal strip () runs and the lower end () of which duct () is extended by at least two internal walls () each located on one side of the strip () and directed towards the surface of the metal bath () in order to form at least one compartment () for recovering the metal oxide particles and intermetallic compound particles. The duct () has a fixed upper part () and a movable lower part () joined together by a deformable element () and means () for positioning the movable lower part () with respect to the metal strip ().

Growing community of inventors

Creil, France

Didier Dauchelle