Patents by Inventor Didier Dauchelle

Didier Dauchelle has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20230119030
    Abstract: A coated metal sheet includes a steel substrate and a coating on at least one surface of the steel 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 coated metal sheet was subjected to a skin pass operation after coating. An outer surface of the metal coating has a waviness Wa0.8 of less than or equal to 0.55 ?m.
    Type: Application
    Filed: December 20, 2022
    Publication date: April 20, 2023
    Inventors: Jean-Michel Mataigne, Didier Dauchelle, Florence Bertrand
  • Patent number: 11572613
    Abstract: 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 Wa0.8 of less than or equal to 0.43 ?m.
    Type: Grant
    Filed: May 14, 2020
    Date of Patent: February 7, 2023
    Assignee: ARCELORMITTAL
    Inventors: Jean-Michel Mataigne, Didier Dauchelle, Florence Bertrand
  • Patent number: 11149336
    Abstract: 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.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: October 19, 2021
    Assignee: ARCELORMITTAL
    Inventors: José Veg, Didier Dauchelle, Hubert Saint-Raymond
  • Patent number: 10941474
    Abstract: 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° in the usage configuration. A method is also provided.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: March 9, 2021
    Assignee: ARCELORMITTAL
    Inventors: Hubert Saint-Raymond, José Veg, Didier Dauchelle
  • Publication number: 20200270732
    Abstract: 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 Wa0.8 of less than or equal to 0.43 ?m.
    Type: Application
    Filed: May 14, 2020
    Publication date: August 27, 2020
    Inventors: Jean-Michel Mataigne, Didier Dauchelle, Florence Bertrand
  • Patent number: 10745790
    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 ) f ? ? O 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.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: August 18, 2020
    Assignee: ARCELORMITTAL
    Inventors: Jean-Michel Mataigne, Didier Dauchelle, Florence Bertrand
  • Publication number: 20190144982
    Abstract: 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.
    Type: Application
    Filed: April 26, 2017
    Publication date: May 16, 2019
    Inventors: José Veg, Didier Dauchelle, Hubert Saint-Raymond
  • Publication number: 20190062888
    Abstract: 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° in the usage configuration. A method is also provided.
    Type: Application
    Filed: October 25, 2018
    Publication date: February 28, 2019
    Inventors: Hubert SAINT-RAYMOND, José VEG, Didier DAUCHELLE
  • Patent number: 10119187
    Abstract: 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 ?m.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: November 6, 2018
    Assignee: ArcelorMittal
    Inventors: Jean-Michel Mataigne, Didier Dauchelle, Florence Bertrand
  • Patent number: 10041162
    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.
    Type: Grant
    Filed: February 10, 2014
    Date of Patent: August 7, 2018
    Assignee: ArcelorMittal
    Inventors: Jean-Michel Mataigne, Didier Dauchelle, Florence Bertrand
  • Publication number: 20180080111
    Abstract: 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 ?m.
    Type: Application
    Filed: November 29, 2017
    Publication date: March 22, 2018
    Inventors: Jean-Michel Mataigne, Didier Dauchelle, Florence Bertrand
  • Publication number: 20180080112
    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 ) f ? ? O 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.
    Type: Application
    Filed: November 29, 2017
    Publication date: March 22, 2018
    Inventors: Jean-Michel Mataigne, Didier Dauchelle, Florence Bertrand
  • Publication number: 20150292072
    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.
    Type: Application
    Filed: February 10, 2014
    Publication date: October 15, 2015
    Inventors: Jean-Michel Mataigne, Didier Dauchelle, Florence Bertrand
  • Patent number: 7722933
    Abstract: A process for the continuous dip-coating of a metal strip (1) in a tank (11) containing a liquid metal bath (12), in which process the metal strip (1) is made to run continuously through a duct (13), the lower part of which is immersed in the liquid metal bath (12), in order to define with the surface of the bath a liquid seal (14). In the region where the strip (1) leaves the liquid metal bath (12), the liquid metal is isolated from the surface of the bath in an isolating enclosure (20), the metal oxide particles and intermetallic compound particles are recovered by the liquid metal flowing from this region into the enclosure (20), and the particles are extracted from this enclosure (20). Also, a plant for implementing the process.
    Type: Grant
    Filed: February 6, 2006
    Date of Patent: May 25, 2010
    Assignee: Arcelor France
    Inventors: Didier Dauchelle, Hugues Baudin, Patrice Lucas, Laurent Gacher, Yves Prigent
  • Publication number: 20060113354
    Abstract: A process for the continuous dip-coating of a metal strip (1) in a tank (11) containing a liquid metal bath (12), in which process the metal strip (1) is made to run continuously through a duct (13), the lower part of which is immersed in the liquid metal bath (12), in order to define with the surface of the bath a liquid seal (14). In the region where the strip (1) leaves the liquid metal bath (12), the liquid metal is isolated from the surface of the bath in an isolating enclosure (20), the metal oxide particles and intermetallic compound particles are recovered by the liquid metal flowing from this region into the enclosure (20), and the particles are extracted from this enclosure (20). Also, a plant for implementing the process.
    Type: Application
    Filed: February 6, 2006
    Publication date: June 1, 2006
    Inventors: Didier DAUCHELLE, Hugues Baudin, Patrice Lucas, Laurent Gacher, Yves Prigent
  • Patent number: 6994754
    Abstract: A process for the continuous dip-coating of a metal strip (1) in a tank (11) containing a liquid metal bath (12), in which process the metal strip (1) is made to run continuously through a duct (13), the lower part of which is immersed in the liquid metal bath (12), in order to define with the surface of the bath a liquid seal (14). In the region where the strip (1) leaves the liquid metal bath (12), the liquid metal is isolated from the surface of the bath in an isolating enclosure (20), and the metal oxide particles and intermetallic compound particles are recovered by the liquid metal flowing from this region into the enclosure (20), and the particles are extracted from this enclosure (20). Also, a plant for implementing the process.
    Type: Grant
    Filed: November 6, 2001
    Date of Patent: February 7, 2006
    Assignee: Sollac
    Inventors: Didier Dauchelle, Hugues Baudin, Patrice Lucas, Laurent Gacher, Yves Prigent
  • Patent number: 6939586
    Abstract: A process for the continuous dip-coating of a metal strip (1) in a tank (11) containing a liquid metal bath (12), in which process the metal strip (1) is made to run continuously through a duct (13), the lower part (13a) of which is immersed in the liquid metal bath (12) in order to define with the surface of the bath a liquid seal (14). A natural flow of the liquid metal from the surface of the liquid seal (14) is set up in two overflow compartments (25, 29) made in the duct (13) and each having an internal wall which extends the duct (13) 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 (14). A plant for implementing the process.
    Type: Grant
    Filed: November 7, 2001
    Date of Patent: September 6, 2005
    Assignee: Usinor
    Inventors: Didier Dauchelle, Hugues Baudin, Patrice Lucas, Laurent Gacher, Yves Prigent
  • Patent number: 6936307
    Abstract: A process for the continuous dip-coating of a metal strip (1) in a tank (11) containing a liquid metal bath (12), in which process the metal strip (1) is made to run continuously through a duct (13), the lower part (13a) of which is immersed in the liquid metal bath (12) in order to define with the surface of the said bath a seal (14). A natural flow of the liquid metal from the surface of the liquid seal is set up in an overflow compartment (25) made in the duct (13) and having an internal wall which extends the duct (13) in its lower part, and the level of liquid metal in the compartment (25) is maintained at a level below the surface of the liquid seal (14). Also, a plant for implementing the process.
    Type: Grant
    Filed: November 7, 2001
    Date of Patent: August 30, 2005
    Assignee: Usinor
    Inventors: Didier Dauchelle, Hugues Baudin, Patrice Lucas, Laurent Gacher, Yves Prigent
  • Patent number: 6923864
    Abstract: The subject of the invention is a plant for the continuous dip-coating of a metal strip (1), of the type comprising a tank (11) containing a liquid metal bath (12), a duct (13) through which the metal strip (1) runs and the lower end (13a) of which duct (13) is extended by at least two internal walls (20; 22) each located on one side of the strip (1) and directed towards the surface of the metal bath (12) in order to form at least one compartment (21; 23) for recovering the metal oxide particles and intermetallic compound particles. The duct (13) has a fixed upper part (30) and a movable lower part (31) joined together by a deformable element (32) and means (35) for positioning the movable lower part (31) with respect to the metal strip (1).
    Type: Grant
    Filed: November 7, 2001
    Date of Patent: August 2, 2005
    Assignee: Sollac
    Inventors: Didier Dauchelle, Hugues Baudin, Patrice Lucas, Laurent Gacher, Yves Prigent
  • Publication number: 20040052959
    Abstract: The subject of the invention is a process for the continuous dip-coating of a metal strip (1) in a tank (11) containing a liquid metal bath (12), in which process the metal strip (1) is made to run continuously through a duct (13), the lower part (13a) of which is immersed in the liquid metal bath (12) in order to define with the surface of the said bath a liquid seal (14). A natural flow of the liquid metal from the surface of the liquid seal (14) is set up in two overflow compartments (25, 29) made in the said duct (13) and each having an internal wall which extends the duct (13) in its lower part and the level of liquid metal in the said compartments is maintained at a level below the surface of the liquid seal (14).
    Type: Application
    Filed: October 10, 2003
    Publication date: March 18, 2004
    Inventors: Didier Dauchelle, Hugues Baudin, Patrice Lucas, Laurent Gacher, Yves Prigent