公开(公告)号：US20230212728A1

公开(公告)日：2023-07-06

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: C23C2/20 ,  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：US20200377964A1

公开(公告)日：2020-12-03

申请号：US16955041

申请日：2018-11-20

Applicant: JFE STEEL CORPORATION

Inventor： Gentaro TAKEDA ,  Hideyuki TAKAHASHI ,  Tetsuya IWATA ,  Koji SAWAMURA

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

Abstract: A method for producing a hot-dip galvanized steel sheet includes supplying humidified gas to the soaking zone 12 in a manner such that: in passes in which the steel sheet moves upward, the humidified gas is supplied from first humidified gas supply ports 40A to 40E provided at positions higher by 1.0 m or more and 5.0 m or less than the centers of lower hearth rolls 54 and overlapping the steel sheet in the passes when viewed from the side of the soaking zone; and in passes in which the steel sheet moves downward, the humidified gas is supplied from second humidified gas supply ports 42A to 42E provided at positions lower by 1.0 m or more and 5.0 m or less than the centers of the upper hearth rolls 52 and overlapping the steel sheet in the passes when viewed from the side of the soaking zone.

公开(公告)号：US20190119773A1

公开(公告)日：2019-04-25

申请号：US16221890

申请日：2018-12-17

Applicant: JFE STEEL CORPORATION

Inventor： Hiroshi MATSUDA ,  Hideyuki TAKAHASHI ,  Hiroi YAMAGUCHI ,  Yasuyuki HAYAKAWA ,  Yukihiro SHINGAKI ,  Takashi TERASHIMA

IPC: C21D8/12 ,  C23C8/80 ,  H01F1/16 ,  C23C8/38 ,  H01J37/32 ,  C23C8/02 ,  H01F41/02 ,  C23C8/26 ,  C21D9/46 ,  C21D9/00

Abstract: Provided is a method for nitriding a grain-oriented electrical steel sheet which is very useful in obtaining excellent magnetic properties with no variation, that enables generating glow discharge between positive electrodes and negative electrodes disposed in a nitriding zone and irradiating the generated plasma to a strip to perform appropriate nitriding.

公开(公告)号：US20150368732A1

公开(公告)日：2015-12-24

申请号：US14764650

申请日：2014-02-18

Applicant: JFE Steel Corporation

Inventor： Hiroshi MATSUDA ,  Hideyuki TAKAHASHI ,  Hiroi YAMAGUCHI ,  Yukihiro SHINGAKI ,  Yasuyuki HAYAKAWA ,  Takashi TERASHIMA

IPC: C21D8/12 ,  C21D9/46 ,  C21D6/00 ,  C23C8/50

CPC classification number: C21D8/1255 ,  C21D6/008 ,  C21D8/1272 ,  C21D9/46 ,  C23C8/50 ,  H01F1/16

Abstract: Provided is a method for nitriding a grain-oriented electrical steel sheet which is very useful in obtaining excellent magnetic properties with no variation by immersing a strip in a molten salt bath after cold rolling and before secondary recrystallization annealing during a production process of a grain-oriented electrical steel sheet, to subject the strip to continuous nitriding to uniformly disperse inhibitor forming elements over the full length and full width of the strip.

Abstract translation: 提供一种氮化方向性电磁钢板的方法，其在获得优异的磁性能方面非常有用，在冷轧后将条带浸入熔盐浴中，并且在颗粒生产过程中进行二次再结晶退火之前， 使带材连续渗氮以在条带的全长和全宽上均匀分散抑制剂形成元件。