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公开(公告)号：US12098439B2
公开(公告)日：2024-09-24
申请号：US17915739
申请日：2021-03-25
Applicant: JFE STEEL CORPORATION
Inventor： Lingling Yang , Yoshiyasu Kawasaki , Tatsuya Nakagaito , Shotaro Terashima , Shunsuke Yamamoto , Katsuya Hoshino , Yuki Takeda
IPC: C22C38/60 , B21C47/02 , B32B15/01 , B32B15/04 , B32B15/18 , C21D1/18 , C21D1/25 , C21D1/76 , C21D6/00 , C21D8/02 , C21D9/46 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/10 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/18 , C22C38/20 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/30 , C22C38/32 , C22C38/34 , C22C38/38 , C22C38/40 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/52 , C22C38/54 , C22C38/58 , C23C2/02 , C23C2/06 , C23C2/28 , C23C2/40 , C23C28/00 , C23C28/02 , C23C30/00
CPC classification number: C21D9/46 , B21C47/02 , B32B15/013 , B32B15/015 , B32B15/04 , B32B15/043 , B32B15/18 , C21D1/185 , C21D1/25 , C21D1/76 , C21D6/001 , C21D6/002 , C21D6/005 , C21D6/007 , C21D6/008 , C21D8/0205 , C21D8/0226 , C21D8/0236 , C21D8/0242 , C21D8/0263 , C21D8/0273 , C21D8/0278 , C22C38/001 , C22C38/002 , C22C38/005 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/10 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/18 , C22C38/20 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/30 , C22C38/32 , C22C38/34 , C22C38/38 , C22C38/40 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/52 , C22C38/54 , C22C38/58 , C22C38/60 , C23C2/02 , C23C2/06 , C23C2/285 , C23C2/29 , C23C2/40 , C23C28/021 , C23C28/025 , C23C28/3225 , C23C30/00 , C23C30/005 , C21D2211/001 , C21D2211/002 , C21D2211/005 , C21D2211/008 , Y10T428/12458 , Y10T428/12792 , Y10T428/12958 , Y10T428/12965 , Y10T428/12972 , Y10T428/24942 , Y10T428/2495 , Y10T428/24967 , Y10T428/24983 , Y10T428/26 , Y10T428/263 , Y10T428/264 , Y10T428/265
Abstract: A steel sheet having a tensile strength (TS) of 1180 MPa or more, high LME resistance, and good weld fatigue properties. The steel sheet has a specific chemical composition and a specific steel microstructure. Crystal grains containing an oxide of Si and/or Mn in a region within 4.9 μm in a thickness direction from a surface of the steel sheet have an average grain size in the range of 3 to 10 μm, the lowest Si concentration LSi and the lowest Mn concentration LMn in the region within 4.9 μm in the thickness direction from the surface of the steel sheet and a Si concentration TSi and a Mn concentration TMn at a quarter thickness position of the steel sheet satisfy a specified formula.
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公开(公告)号：US11731179B2
公开(公告)日：2023-08-22
申请号：US17016381
申请日：2020-09-10
Applicant: SHOUGANG JINGTANG IRON & STEEL CO., LTD.
Inventor： Fang Xu , Hongbo Qin , Jinfang Shi , Shuang Huang , Dongning Li , Kai Li , Liang Hu , Tong Chen , Wei Zheng , Junyin Wang , Lingfeng Chen , Haiwei Xu , Shengguo Cui , Jinhua Wang , Changqing Cao , Zhijun Wei
CPC classification number: B21B37/74 , B21B45/0209 , B21C47/003 , B21C47/02 , C21D9/573
Abstract: The present disclosure discloses a steel strip coiling temperature control method, a steel strip coiling temperature control device and a steel strip processing system, which relate to the technical field of steel strip production. The method comprises: seeking a corresponding speed compensation coefficient according to a target thickness of the steel strip and a target temperature parameter; seeking a corresponding speed gain coefficient from a second correspondence table according to a steel strip speed; correcting the steel strip speed based on the speed compensation coefficient and the speed gain coefficient to obtain a corrected steel strip speed; and adjusting a cooling efficiency of a laminar flow cooling apparatus according to the corrected steel strip speed. With the method, the cooling efficiency of the laminar flow cooling apparatus can be dynamically adjusted according to the steel strip speed, thereby solving the problem that that there is a great difference in coiling temperature between a tail section of the steel strip and a front section of the steel strip caused by the steel strip throwing process, and reducing the amount of cutting loss of the steel strip.
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公开(公告)号：US11718466B2
公开(公告)日：2023-08-08
申请号：US17238471
申请日：2021-04-23
Applicant: Lincoln Global, Inc.
Inventor： William D. Cooper
CPC classification number: B65D85/04 , B21C47/02 , B21C47/146 , B65D25/14 , B65H54/80 , B65H2701/36
Abstract: A container includes an outer box, and a polygonal liner located within the outer box. The polygonal liner has a plurality of vertical walls. A continuous length of wire is located within the polygonal liner and forms a plurality of layers. Each of the layers is comprised of a series of wire loops arrayed polygonally along the vertical walls of the polygonal liner.
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4.发明公开公开(公告)号：US20230203611A1
公开(公告)日：2023-06-29
申请号：US17927875
申请日：2021-05-25
Applicant: BAOSHAN IRON & STEEL CO., LTD.
Inventor： Wei LI , Xiaodong ZHU , Peng XUE
CPC classification number: C21D8/0236 , C21D8/0273 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/14 , C22C38/12 , C21D8/0226 , B22D11/16 , B21C47/02 , C21D2211/005 , C21D2211/008
Abstract: Disclosed is a cold-rolled and annealed dual-phase steel having a tensile strength of greater than 780 MPa. A matrix structure thereof is fine and uniform martensite+ferrite. The cold-rolled and annealed dual-phase steel contains the following chemical elements in the following mass percentages: C: 0.1%-0.13%, Si: 0.4%-0.8%, Mn: 1.65%-1.9%, Al: 0.01%-0.05%, Nb: 0.01-0.03%, and Ti: 0.01-0.03%. Furthermore, the cold-rolled annealed dual-phase steel does not contain the elements Cr or Mo. In addition, also disclosed is a method for manufacturing the cold-rolled and annealed dual-phase steel, comprising smelting and continuous casting, hot rolling, cold rolling, annealing, tempering and flattening. The cold-rolled and annealed dual-phase steel of the present invention is not only economical, but also has the characteristics of high strength, excellent elongation and cold bending properties.
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公开(公告)号：US20230183834A1
公开(公告)日：2023-06-15
申请号：US17924627
申请日：2021-06-03
Applicant: NIPPON STEEL CORPORATION
Inventor： Kengo TAKEDA , Katsuya NAKANO , Yuya SUZUKI , Eriko TSUKAMOTO
IPC: C21D9/46 , C21D8/02 , B21C47/02 , C23G1/08 , C23C2/06 , C23C2/12 , C23C2/40 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06
CPC classification number: C21D9/46 , C21D8/0226 , C21D8/0236 , C21D8/0273 , B21C47/02 , C23G1/08 , C23C2/06 , C23C2/12 , C23C2/40 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C21D2211/005 , C21D2211/009 , C21D2211/002 , C21D2211/008 , C21D2211/001
Abstract: Provided is a steel sheet having a predetermined chemical composition and microstructure, wherein a block size in a first depth region of 1 to 10 μm from the surface is 5.0 μm or less, a block size in a second depth region of 10 to 60 μm from the surface is 6.0 to 20.0 μm, and a block size in a third depth region of 60 μm to 1/4 thickness from the surface is less than 6.0 μm. Further, provided is a method for producing a steel sheet comprising a step of hot rolling a steel slab having a predetermined chemical composition, then coiling it at 500° C. or more, a step of pickling the hot rolled steel sheet to remove oxide scale, wherein an amount of removal of the surface layer of the hot rolled steel sheet is less than 5.00 μm, a step of cold rolling by a rolling reduction of 30 to 90%, and an annealing step of holding in an atmosphere of a dew point of −20 to 20° C. at a temperature region of 740 to 900° C. for 40 to 300 seconds.
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Patent Agency Ranking
公开(公告)号：US20230160032A1
公开(公告)日：2023-05-25
申请号：US17915696
申请日：2021-03-25
Applicant: JFE STEEL CORPORATION
Inventor： Lingling YANG , Yoshiyasu KAWASAKI , Hidekazu MINAMI , Tatsuya NAKAGAITO , Shotaro TERASHIMA , Shunsuke YAMAMOTO , Katsuya HOSHINO , Yuki TAKEDA
IPC: C21D9/46 , C23C2/40 , C23C2/06 , C21D8/02 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , B21C47/02
CPC classification number: C21D9/46 , C23C2/40 , C23C2/06 , C21D8/0226 , C21D8/0236 , C21D8/0273 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , B21C47/02 , C21D2211/002 , C21D2211/005 , C21D2211/008 , C21D2211/001
Abstract: A steel sheet having a tensile strength (TS) of 780 MPa or more and less than 1180 MPa, high LME resistance, and good weld fatigue properties. The steel sheet has a specific chemical composition and a specific steel microstructure. Crystal grains containing an oxide of Si and/or Mn in a region within 4.9 μm in a thickness direction from a surface of the steel sheet have an average grain size in the range of 3 to 10 μm, the lowest Si concentration LSi and the lowest Mn concentration LMn in the region within 4.9 μm in the thickness direction from the surface of the steel sheet and a Si concentration TSi and a Mn concentration TMn at a quarter thickness position of the steel sheet satisfy a specified formula.
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公开(公告)号：US20220152679A1
公开(公告)日：2022-05-19
申请号：US17439314
申请日：2020-03-19
Applicant: NIPPON STEEL CORPORATION
Inventor： Tooru AKASHI , Seiji ARIZUMI
Abstract: Flatness of a hot-rolled steel sheet in a coil is improved when the hot-rolled steel sheet is wound with a mandrel in a hot-rolling process to manufacture a coil. The mandrel has a protruding shape with a center portion in an axial direction protruding from both end portions when seen from a lateral side in the axial direction. Regarding a peripheral length difference, which is a difference between a peripheral length of the center portion of the mandrel and a peripheral length at a predetermined distance from the center portion, the ratio of the peripheral length difference to the peripheral length of the center portion is preferably 0.0002 to 0.012. The protruding shape may be a trapezoidal shape or a polynomial function shape.
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公开(公告)号：US20210237963A1
公开(公告)日：2021-08-05
申请号：US17238471
申请日：2021-04-23
Applicant: Lincoln Global, Inc.
Inventor： William D. Cooper
Abstract: A container includes an outer box, and a polygonal liner located within the outer box. The polygonal liner has a plurality of vertical walls. A continuous length of wire is located within the polygonal liner and forms a plurality of layers. Each of the layers is comprised of a series of wire loops arrayed polygonally along the vertical walls of the polygonal liner.
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公开(公告)号：US10961612B2
公开(公告)日：2021-03-30
申请号：US15989329
申请日：2018-05-25
Applicant: Andritz AG
Inventor： Thomas Hofbauer , Florian Leeber , Walter Kautz , Martin Fein
Abstract: A method for coiling a metal strip that is heat-treated in a furnace immediately before coiling and fed to a coiler at an outlet speed, and then coiled at the coiler at an elevated temperature. The future outlet speed of the metal strip and the heat losses from the metal strip between the furnace and the coiler are calculated via a predictive model and the furnace is controlled by the predictive model such that the metal strip is coiled at a pre-defined temperature within a maximum deviation of +/−5° C.
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公开(公告)号：US10926116B2
公开(公告)日：2021-02-23
申请号：US16262527
申请日：2019-01-30
Applicant: Atom Alloys, LLC
Inventor： Vinod Menon
Abstract: The present invention includes systems, assemblies, and methodologies for inhibiting combustion within fluid containers, enhancing the safety of such containers. One aspect includes a novel fuel containers which take advantage of the inventive principles disclosed herein. In one embodiment a fuel drum includes a plurality of base assemblies arranged in a drum cluster, and disposed within the drum. In another embodiment, a portable fuel container includes a plurality of base assemblies arranged in a can cluster and disposed within the portable fuel container. In yet another embodiment, a plurality of base assemblies are arranged in a cell cluster and disposed within a lattice structure.
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