公开(公告)号：US20240376583A1

公开(公告)日：2024-11-14

申请号：US18690719

申请日：2022-09-09

Applicant: Coatine PreGa GmbH & Co. KG

Inventor： Paul Niederstein

IPC: C23C2/06 ,  C23C2/00

Abstract: The invention relates to a method for high-temperature galvanization of ferrous material parts (10). The method comprises the production of zinc melt (12). The method further comprises saturating the iron concentration of the zinc melt (12) so that it is iron-saturated. In addition, the method comprises producing an undersaturation of the iron concentration of the zinc melt (12) so that it is iron-undersaturated. The method further comprises dipping the ferrous material parts (10) in iron-undersaturated zinc melt (12), whereby a galvanization layer (14) is formed on the ferrous material parts (10).

公开(公告)号：US12098465B2

公开(公告)日：2024-09-24

申请号：US17278144

申请日：2019-08-21

Applicant: POSCO

Inventor： Ilhwan Noh ,  Won-Ho Lee ,  Taein Jang

IPC: C23C2/20 ,  C23C2/00 ,  C23C2/40

CPC classification number: C23C2/20 ,  C23C2/00 ,  C23C2/003 ,  C23C2/00344 ,  C23C2/40 ,  C23C2/51 ,  C23C2/52

Abstract: An apparatus for controlling coating weight coated on a strip by using an air knife disposed in a travelling direction of the strip in a continuous plating process in which the strip is dipped in a molten metal pot and is coated includes: a prediction model unit including a prediction model in which a neural network is trained with accumulated operation conditions; and an optimum air knife condition calculation unit configured to derive an absolute value of at least one of an air knife gap and an air knife pressure by using the prediction model based on an input operation condition.

公开(公告)号：US20240309501A1

公开(公告)日：2024-09-19

申请号：US18423172

申请日：2024-01-25

Applicant: Commercial Metals Company

Inventor： Roger Duane DECOSTER ,  Samuel Christian HARTLEY

IPC: C23C2/00 ,  C23C2/36

CPC classification number: C23C2/003 ,  C23C2/00344 ,  C23C2/36

Abstract: A method including manufacturing a trough. The trough includes connected walls configured to hold a molten galvanization material within the trough. The trough is further manufactured to include a first end including a first gate system. The trough is further manufactured to include a second end, opposing the first end, including a second gate system. The trough is further manufactured to include a roller connected, inside the trough, to opposing inside walls of the connected walls. The trough is further manufactured to include a sump disposed within the trough. The trough is further manufactured to include a side braces connected to an outside wall of the connected walls. The side braces extend outwardly from the outside wall. The trough is further manufactured to include an inlet connected to the sump, the inlet disposed at a perpendicular angle relative to the outside wall and further disposed between the side braces.

公开(公告)号：US12084774B2

公开(公告)日：2024-09-10

申请号：US18008487

申请日：2021-04-21

Applicant: JFE STEEL CORPORATION

Inventor： Kenji Yamashiro ,  Hideyuki Takahashi ,  Takumi Koyama ,  Hidetoshi Inoue ,  Syuhei Nishinaka ,  Toshiki Fujii ,  Reona Aishima ,  Yutaka Yanagisawa ,  Masahiro Yoshikawa

IPC: C23C2/00 ,  C23C2/20 ,  C23C2/40

CPC classification number: C23C2/20 ,  C23C2/40

Abstract: A gas wiping nozzle manufactured from parts divided along the slit length direction and maintains a gap in the width direction over the length direction in high temperature atmospheres and a method for manufacturing a hot-dip metal strip. In a gas wiping nozzle, a first and a second nozzle member are each divided along the length direction X of a slit into a plurality of nozzle members. The dimension of a divided face of the first nozzle member is 1.5T1 or more in a section of the first nozzle member where T1 is the thickness of the first nozzle member in the width direction Z of the slit, and the dimension of a divided face of the second nozzle member is 1.5T2 or more in a section of the second nozzle member where T2 is the thickness of the second nozzle member in the width direction Z of the slit.

公开(公告)号：US20240271264A1

公开(公告)日：2024-08-15

申请号：US18681097

申请日：2022-03-24

Applicant: John Cockerill S.A.

Inventor： Fabian PIZZUTO ,  Michel DUBOIS ,  Giuseppe LOMBARDO

IPC: C23C2/20 ,  C23C2/00 ,  C23C2/28

CPC classification number: C23C2/20 ,  C23C2/003 ,  C23C2/29

Abstract: An installation for adjusting the thickness of a hot liquid coating on a traveling strip, and for cooling said coating, installation successively comprising, from the bottom upwards, a wiping device comprising gas knives for wiping excess liquid from the coated strip at the outlet of a liquid bath and at least one gas cooling header with gas blowers for solidifying said coating, wherein a water cooling header is intercalated on the strip path between the wiping device and the gas cooling header, said water cooling header comprising at least one nozzle, one gas cooling header and one water cooling header being located on either side of the traveling strip, the water cooling header being configured to produce airless spraying of demineralized water onto the coated strip, so as to selectively increase the viscosity of an external surface or skin of the liquid coating, and not the entire bulk thickness thereof.

公开(公告)号：US12054829B2

公开(公告)日：2024-08-06

申请号：US17762533

申请日：2020-09-24

Applicant: POSCO ,  STEEL & CONVERGENCE TECHNOLOGY RESEARCH ASSOCIATION ,  POSCO COATED & COLOR STEEL CO., LTD.

Inventor： Sung-Joo Kim ,  Kyung-Kwan Park ,  Moon-Hi Hong ,  Heung-Yun Kim ,  Tae-Yeul Park ,  Myung-Soo Kim ,  Il-Ryoung Sohn ,  Tae-Chul Kim ,  Dae-Young Kang

IPC: C23C2/06 ,  B32B15/01 ,  B32B15/04 ,  B32B15/18 ,  C21D7/06 ,  C22C18/00 ,  C22C18/04 ,  C23C2/00 ,  C23C2/02 ,  C23C2/28 ,  C23C2/40 ,  C23C28/00 ,  C23C28/02 ,  C23C30/00

CPC classification number: C23C2/06 ,  B32B15/01 ,  B32B15/013 ,  B32B15/04 ,  B32B15/043 ,  B32B15/18 ,  C21D7/06 ,  C22C18/00 ,  C22C18/04 ,  C23C2/0035 ,  C23C2/02 ,  C23C2/285 ,  C23C2/29 ,  C23C2/40 ,  C23C28/02 ,  C23C28/021 ,  C23C28/023 ,  C23C28/025 ,  C23C28/322 ,  C23C28/3225 ,  C23C30/00 ,  C23C30/005 ,  Y10T428/12951 ,  Y10T428/12958 ,  Y10T428/12972 ,  Y10T428/12979 ,  Y10T428/12993 ,  Y10T428/24942 ,  Y10T428/24983 ,  Y10T428/263 ,  Y10T428/265

Abstract: Provided are a plated steel sheet and a method for manufacturing same, the plated steel sheet comprising: a base steel sheet; a Zn—Mg—Al plating layer provided on at least one surface of the base steel sheet; and an Fe—Al inhibition layer provided between the base steel sheet and the Zn—Mg—Al plating layer. The plating layer comprises, by weight %, 4 to 10% of Mg and 5.1-25% of Al and the remainder being Zn and unavoidable impurities with respect to components not including iron (Fe) diffused from the base steel sheet. The plating layer comprises a 24-50% MgZn2 phase in phase fraction. In the MgZn2 phase, an Al single phase is present in the ratio of 1-30% relative to the cross-sectional area of the total MgZn2 phase.

公开(公告)号：US12048963B2

公开(公告)日：2024-07-30

申请号：US17610746

申请日：2020-05-12

Applicant: ArcelorMittal

Inventor： Emmanuel Dechassey ,  Woudhouh Memni ,  Patrice Vicente-Hernandez

IPC: B22D7/00 ,  B22D7/04 ,  C23C2/00 ,  C23C2/34

CPC classification number: B22D7/04 ,  C23C2/003 ,  C23C2/34 ,  Y10T428/12222

Abstract: An ingot, having a volume between 0.15 m3 and 0.80 m3 and a surface area to volume ratio between 10 m−1 and 18 m−1, made of at least one metal, having longitudinal faces extending between two end faces and including at least one hole extending from one of the longitudinal faces, the maximum distance between any point of the hole periphery, to its closest longitudinal face, noted MaxL, the at least one hole being configured such that said maximum distance MaxL is smaller than the minimal distance, noted MinE, between any point of the hole periphery and its closest end face.

公开(公告)号：US12031192B2

公开(公告)日：2024-07-09

申请号：US18332752

申请日：2023-06-12

Applicant: JFE STEEL CORPORATION

Inventor： Gentaro Takeda ,  Hideyuki Takahashi ,  Tetsuya Iwata ,  Koji Sawamura

IPC: C21D9/46 ,  C21D1/26 ,  C21D9/56 ,  C22C38/02 ,  C23C2/00 ,  C23C2/02 ,  C23C2/06 ,  C23C2/28 ,  C23C2/40

CPC classification number: C21D9/46 ,  C21D1/26 ,  C21D9/561 ,  C21D9/562 ,  C22C38/02 ,  C23C2/0035 ,  C23C2/0038 ,  C23C2/004 ,  C23C2/0224 ,  C23C2/06 ,  C23C2/28 ,  C23C2/40

Abstract: Provided is a continuous hot-dip galvanizing apparatus comprising: a vertical annealing furnace having heating, soaking zone, and cooling zones therein; and a hot-dip galvanizing line downstream of the cooling zone. The heating, soaking, and cooling zones each have, in its upper portion, at least one upper hearth roll and, in its lower portion, at least one lower hearth roll. The soaking zone has a first and second humidified gas supply ports to supply a humidified gas having a dew point of 10° C. to 30° C. to the soaking zone. The first and second humidified gas supply ports are 1.0 m to 5.0 m lower than the center of the lower and upper hearth rolls, respectively, and overlap the steel sheet. The first humidified gas supply port is provided only for an ascending pass and the second humidified gas supply port is provided only for a descending pass.

公开(公告)号：US11946145B2

公开(公告)日：2024-04-02

申请号：US17569462

申请日：2022-01-05

Applicant: Commercial Metals Company

Inventor： Roger Duane Decoster ,  Samuel Christian Hartley

IPC: C23C2/00 ,  C23C2/36

CPC classification number: C23C2/003 ,  C23C2/00344 ,  C23C2/36

Abstract: A trough including connected walls configured to hold a molten galvanization material within the trough. The trough further includes a first end comprising a first gate system. The trough further includes a second end, opposing the first end, comprising a second gate system. The trough further includes a roller connected, inside the trough, to opposing inside walls of the plurality of connected walls. The trough further includes a sump disposed within the trough. The trough further includes an inlet connected to the sump.

公开(公告)号：US11939656B2

公开(公告)日：2024-03-26

申请号：US17325403

申请日：2021-05-20

Applicant: Cleveland-Cliffs Steel Properties Inc.

Inventor： Daniel J. Cadotte ,  Russell Dejarnatt

IPC: C23C2/00 ,  C23C2/40

CPC classification number: C23C2/003 ,  C23C2/004 ,  C23C2/40

Abstract: A continuous coating line includes a snout assembly exposed to molten metal. The snout assembly includes a snout tip positioned about a steel strip that is immersible in the molten metal to provide a seal around the steel strip during entry into the molten metal. The snout tip includes a refractory material that is resistant to wear, abrasion, and corrosion when the snout tip is exposed to the molten metal.