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    METHOD FOR THE PRODUCTION OF METAL SHEET HAVING A ZNMG OR ZNALMG COATING, COMPRISING THE APPLICATION OF A BASIC SOLUTION OF A MAGNESIUM ION COMPLEXING AGENT, AND RESULTING METAL SHEET.
    7.
    发明申请
    METHOD FOR THE PRODUCTION OF METAL SHEET HAVING A ZNMG OR ZNALMG COATING, COMPRISING THE APPLICATION OF A BASIC SOLUTION OF A MAGNESIUM ION COMPLEXING AGENT, AND RESULTING METAL SHEET. 审中-公开
    生产具有ZNMG或ZNALMG涂层的金属片的方法，包括镁离子复合剂的基本溶液的应用和结晶金属片。

    公开(公告)号：US20160010216A1

    公开(公告)日：2016-01-14

    申请号：US14768350

    申请日：2014-02-18

    Applicant: ARCELORMITTAL

    Inventor： Christian Allely ,  Tiago Machado Amorim ,  Astrid Coffigny

    IPC: C23C28/00 ,  C23C2/26 ,  B32B15/01 ,  C23C22/68 ,  C23C22/60 ,  C23C2/06 ,  C23C2/40

    CPC classification number: C23C28/321 ,  B32B15/013 ,  C23C2/06 ,  C23C2/26 ,  C23C2/40 ,  C23C22/60 ,  C23C22/68 ,  C23C28/34 ,  C23G1/20

    Abstract: A method for the production of metal sheet including a substrate having two faces, at least one of which is coated with a metal coating including between 0.1 and 10% by weight of Mg and optionally between 0.1 and 20% by weight of Al, the remainder of the metal coating being Zn. The method includes at least the steps of providing a steel substrate having two faces, depositing a metal coating on at least one face hot dipping of the substrate, solidifying the metal coating, applying onto the outer surfaces of the metal coating an aqueous solution having a pH of 7 to 13 and including a magnesium ion complexing agent, for which the dissociation constant pKd of the complexing reaction of the agent with the magnesium is greater than or equal to 2, and to the metal sheet obtainable with this method.

    Abstract translation: 一种用于生产金属片的方法，其包括具有两个表面的基底，其中至少一个涂覆有包含0.1至10重量％的Mg和任选地0.1至20重量％的Al的金属涂层，其余部分 的金属涂层是Zn。 该方法至少包括以下步骤：提供具有两个面的钢基材，在基材的至少一个表面上浸渍金属涂层，使金属涂层固化，将金属涂层固化，在金属涂层的外表面上施加具有 pH为7〜13，并且包括镁离子络合剂，其中该试剂与镁的络合反应的解离常数pKd大于或等于2，以及可用该方法获得的金属片。

    Method for the manufacture of a phosphatable part starting from a steel sheet coated with a metallic coating based on aluminum
    10.
    发明授权
    Method for the manufacture of a phosphatable part starting from a steel sheet coated with a metallic coating based on aluminum 有权

    公开(公告)号：US11414737B2

    公开(公告)日：2022-08-16

    申请号：US15748262

    申请日：2016-07-29

    Applicant: ARCELORMITTAL

    Inventor： Tiago Machado Amorim ,  Christian Allely ,  Grégory Leuillier

    IPC: C23C2/12 ,  C23C2/06 ,  C23C2/28 ,  C21D1/673 ,  C21D8/02 ,  C22C21/10 ,  C22F1/053 ,  C23C22/07

    Abstract: A method for the manufacture of a hardened part coated with a phosphatable coating is provided. The method includes providing a steel sheet pre-coated with a metallic coating including from 4.0 to 20.0% by weight of zinc, from 1.0 to 3.5% by weight of silicon, optionally from 1.0 to 4.0% by weight of magnesium, and optionally additional elements chosen from Pb, Ni, Zr, or Hf, the content by weight of each additional element being less than 0.3% by weight, the balance being aluminum and unavoidable impurities and residuals elements. The steel sheet is cut to obtain a blank, the blank is thermally treated at a temperature between 840 and 950° C. to obtain a fully austenitic microstructure in the steel, the blank is transferred into a press tool and hot-formed to obtain a part. The part is cooled to obtain a martensitic or martensitic-bainitic microstructure or made of at least 75% of equiaxed ferrite, from 5 to 20% of martensite and bainite in amount less than or equal to 10%.

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