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    METHOD FOR PREVENTION OF YELLOWING ON SURFACE OF STEEL SHEET AFTER PICKLING
    2.
    发明申请
    METHOD FOR PREVENTION OF YELLOWING ON SURFACE OF STEEL SHEET AFTER PICKLING 审中-公开
    防止钢板表面发生黄铁屑的方法

    公开(公告)号：US20150013716A1

    公开(公告)日：2015-01-15

    申请号：US14372912

    申请日：2013-01-16

    Applicant: JFE STEEL CORPORATION

    Inventor： Hiroyuki Masuoka ,  Satoru Ando ,  Shigeyuki Aizawa ,  Kazuki Nakazato ,  Shoichiro Taira

    IPC: C23G1/08

    CPC classification number: C23G1/08 ,  C21D8/02 ,  C21D8/0278 ,  C21D9/562 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C23G1/00 ,  C23G1/081 ,  C23G1/085 ,  C23G1/086

    Abstract: In a method for prevention of yellowing on a surface of a steel sheet subjected to re-pickling, washing with water and drying after a surface of a continuously annealed steel sheet is pickled to remove Si-containing oxide layer from a surface layer of the steel sheet, the surface of the steel sheet is held at a wet state between the pickling and the re-pickling and between the re-pickling and the washing, and more preferably the washing is carried out with water having an iron ion concentration decreased to not more than 20 g/L, whereby the yellowing on the surface of the steel sheet after the pickling is prevented. Thus, cold rolled steel sheets being excellent in not only the appearance quality but also the phosphatability and corrosion resistance after painting are manufactured stably.

    Abstract translation: 在经过再次酸化的钢板表面防止黄化的方法中，在连续退火钢板的表面被酸洗后，用水洗涤并干燥以从钢的表面层除去含Si氧化物层 在酸洗和再酸洗之间以及再酸洗和洗涤之间，钢板的表面处于湿润状态，更优选地，用铁离子浓度降低至不是的水进行洗涤 大于20g / L，从而防止酸洗后钢板表面发黄。 因此，不仅稳定地制造在外观品质上优异且涂装后的耐磷化性和耐腐蚀性优异的冷轧钢板。

    CONTINUOUS ANNEALING FURNACE FOR STEEL STRIP, CONTINUOUS ANNEALING METHOD, CONTINUOUS GALVANIZING APPARATUS AND METHOD FOR MANUFACTURING GALVANIZED STEEL STRIP (AS AMENDED)
    4.
    发明申请
    CONTINUOUS ANNEALING FURNACE FOR STEEL STRIP, CONTINUOUS ANNEALING METHOD, CONTINUOUS GALVANIZING APPARATUS AND METHOD FOR MANUFACTURING GALVANIZED STEEL STRIP (AS AMENDED) 有权
    钢连续退火炉，连续退火方法，连续浇注设备及制造钢化钢筋条的方法（已修订）

    公开(公告)号：US20150140217A1

    公开(公告)日：2015-05-21

    申请号：US14402556

    申请日：2013-05-20

    Applicant: JFE STEEL CORPORATION

    Inventor： Hideyuki Takahashi ,  Nobuyuki Sato ,  Kazuki Nakazato ,  Motoki Takada

    IPC: C23C2/02 ,  C23C2/00

    CPC classification number: C23C2/02 ,  B05D3/0218 ,  B05D7/14 ,  C21D1/26 ,  C21D1/74 ,  C21D1/76 ,  C21D9/56 ,  C21D9/561 ,  C23C2/003 ,  C23C2/06 ,  C23C2/26 ,  C23C2/28 ,  C23C2/40 ,  F27B9/045 ,  F27B9/28 ,  F27D7/04

    Abstract: Provided is a vertical annealing furnace, in which a heating zone and a soaking zone are communicated with each other in the upper part of the furnace, in which a part of the furnace other than the communicated parts is separated by a dividing wall, in which part of the furnace gas is suctioned into a refiner having a deoxidation device and a dehumidification device which is placed outside the furnace to decrease the dew point of the gas by removing oxygen and moisture from the gas and such that the resultant gas having a decreased dew point is returned into the furnace, in which a gas suction port into the refiner is located in the lower part of the connection part between the soaking zone and the cooling zone and in which one or more gas suction ports are located in the parts of the heating zone and/or the soaking zone outside of an area within 6 m in the vertical direction and 3 m in the longitudinal direction of the furnace from the steel strip entrance in the lower part of the heating zone.

    Abstract translation: 提供一种垂直退火炉，其中加热区和均热区在炉的上部彼此连通，其中除了连通部分之外的一部分炉被分隔壁分隔开，其中 将一部分炉内气体吸入具有脱氧装置和除湿装置的精炼机，该装置设置在炉外，通过从气体中除去氧气和水分从而降低气体的露点，使得所得到的气体具有降低的露水 点返回到炉中，其中进入精磨机的气体吸入口位于均热区和冷却区之间的连接部分的下部，并且其中一个或多个气体吸入口位于 加热区和/或在垂直方向上6m以内的区域外的均热区域和炉的下部的钢带入口3m 汀区。

    FACILITY AND METHOD FOR CONTINUOUSLY MANUFACTURING HOT-DIP GALVANIZED STEEL SHEET
    6.
    发明申请
    FACILITY AND METHOD FOR CONTINUOUSLY MANUFACTURING HOT-DIP GALVANIZED STEEL SHEET 审中-公开
    连续制造热镀锌钢板的设备和方法

    公开(公告)号：US20150315691A1

    公开(公告)日：2015-11-05

    申请号：US14649408

    申请日：2012-12-04

    Applicant: JFE STEEL CORPORATION

    Inventor： Nobuyuki Sato ,  Kazuki Nakazato ,  Takamasa Fujii

    IPC: C23C2/02 ,  C23C2/06 ,  C22C38/00 ,  C21D9/56 ,  C21D1/76 ,  C23C2/00 ,  C23C2/40

    CPC classification number: C23C2/06 ,  C21D1/76 ,  C21D9/561 ,  C21D9/573 ,  C21D9/5735 ,  C22C38/00 ,  C23C2/003 ,  C23C2/02 ,  C23C2/40

    Abstract: A facility for continuously manufacturing a galvanized steel sheet includes a continuous annealing furnace, a snout, and a galvanization bath. The furnace is divided into a heating zone, a soaking zone, and a cooling zone. The bath is directly connected to the furnace through the snout. The facility has a dewpoint meter and a draft port and a suction port for a furnace gas that are provided in at least one of the zones, gas cyclic paths which connect the draft port and the suction port to a refiner, and a dewpoint meter and a humidification device that are provided in the snout. The gas cyclic paths are separately formed for the respective connected zones. The refiner functions so that a measured value of the dewpoint meter is equal to a target dewpoint, and the humidification device functions so that a measured value of the dewpoint meter in the snout is equal to a target dewpoint for the snout.

    Abstract translation: 用于连续制造镀锌钢板的设备包括连续退火炉，喷嘴和镀锌浴。 炉子分为加热区，均热区和冷却区。 浴缸通过鼻子直接连接到炉子。 该设备具有设置在至少一个区域中的用于炉气的露点仪，抽气口和抽气口，将抽气口和吸入口连接到精磨机的气体循环路径，以及露点计和 设置在鼻孔中的加湿装置。 气体循环路径分别形成用于各个连接区域。 精磨机起作用，使得露点计的测量值等于目标露点，并且加湿装置起作用，使得喷嘴中的露点计的测量值等于鼻孔的目标露点。

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