公开(公告)号：US20170314096A1

公开(公告)日：2017-11-02

申请号：US15523450

申请日：2015-10-28

Applicant: FIVES STEIN

Inventor： Pascal Thevenet

IPC: C21D9/56 ,  F27B9/28 ,  C21D8/12 ,  F27B17/00

CPC classification number: C21D9/564 ,  C21D8/1238 ,  C21D8/125 ,  C21D8/1255 ,  C21D8/1261 ,  C21D9/56 ,  C21D9/563 ,  C21D2201/05 ,  F27B9/28 ,  F27B17/00

Abstract: The invention concerns a method for accentuating the orientation of the grains of a continuous steel sheet (1), in particular for producing electrical sheet steel, said method involving, during the movement of the steel sheet (1) in the longitudinal direction of same, a longitudinal stretching of the steel sheet (1) in a stretch region (1d) in which the steel sheet (1) moves at a temperature of between approximately 750° C. and approximately 900° C. The invention also concerns a device for implementing said method in which the stretching is carried out by two tensioning blocks (41, 42) comprising traction rollers arranged to move and guide the steel sheet (1). The invention further concerns a facility for producing electrical sheet steel comprising a line comprising a rolling mill and on which said method and said device are implemented downstream from the rolling mill.

公开(公告)号：US20170107593A1

公开(公告)日：2017-04-20

申请号：US15128891

申请日：2015-03-26

Applicant: NIPPON STEEL & SUMIKIN STAINLESS STEEL CORPORATION

Inventor： Junichi HAMADA ,  Koji ITO

IPC: C21D9/46 ,  C22C38/54 ,  C22C38/52 ,  C22C38/50 ,  C22C38/48 ,  C22C38/46 ,  C22C38/44 ,  C22C38/42 ,  C22C38/32 ,  C22C38/30 ,  C22C38/28 ,  C22C38/26 ,  C22C38/24 ,  C22C38/22 ,  C22C38/20 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C21D8/02 ,  F16L23/032 ,  C22C38/60

CPC classification number: C21D9/46 ,  C21D6/002 ,  C21D8/02 ,  C21D8/0226 ,  C21D8/0263 ,  C21D2201/05 ,  C21D2211/005 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/004 ,  C22C38/005 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/18 ,  C22C38/20 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/30 ,  C22C38/32 ,  C22C38/40 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/52 ,  C22C38/54 ,  C22C38/60 ,  F16L23/032

Abstract: The present invention provides a rolled ferritic stainless steel material excellent in corrosion resistance and toughness, in particular suitable as a material for a flange and a method for producing the same and flange part. The rolled ferritic stainless steel material contains, by mass %, C: 0.001 to 0.08%, Si: 0.01 to 1.0%, Mn: 0.01 to 1.0%, P: 0.01 to 0.05%, S: 0.0002 to 0.01%, Cr: 10.0 to 25.0%, and N: 0.001 to 0.05%, has a balance of Fe and unavoidable impurities, has a thickness of 5 mm or more, and has an area ratio of crystal grains with a direction within 15° from the rolling direction of 20% or more in a cross-section parallel to the rolling direction at any location between the left and right ends of the steel sheet.

公开(公告)号：US20170044641A1

公开(公告)日：2017-02-16

申请号：US15306242

申请日：2015-05-07

Applicant: CENTRO SVILUPPO MATERIALI S.P.A.

Inventor： Stefano FORTUNATI

IPC: C21D9/52 ,  C22C38/34 ,  C22C38/28 ,  C22C38/26 ,  C22C38/20 ,  C22C38/14 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C21D8/12 ,  B22D11/00 ,  H02K1/02 ,  H01F1/03 ,  C22C38/38

CPC classification number: C21D9/52 ,  B22D11/001 ,  C21D6/008 ,  C21D8/1205 ,  C21D8/1222 ,  C21D8/1233 ,  C21D8/1261 ,  C21D8/1266 ,  C21D8/1272 ,  C21D2201/05 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/004 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/14 ,  C22C38/20 ,  C22C38/26 ,  C22C38/28 ,  C22C38/34 ,  C22C38/38 ,  H01F1/0306 ,  H02K1/02

Abstract: A process for the production of grain non-oriented electric Fe—Si steel strips, with excellent electric and/or magnetic characteristics to be used preferably for construction of electrical machines is disclosed.

Abstract translation: 公开了一种用于生产电极和/或磁特性优良的晶粒非取向电Fe-Si钢带的方法，其优选用于电机的构造。

公开(公告)号：US20170016085A1

公开(公告)日：2017-01-19

申请号：US15121791

申请日：2015-02-24

Applicant: JFE Steel Corporation

Inventor： Hiroaki TODA ,  Shigehiro TAKAJO ,  Michiro KOMATSUBARA

IPC: C21D9/46 ,  H01F41/02 ,  H01F3/02 ,  C21D8/12 ,  C21D10/00

CPC classification number: C21D9/46 ,  C21D1/09 ,  C21D8/1216 ,  C21D8/1294 ,  C21D10/00 ,  C21D2201/05 ,  H01F1/16 ,  H01F3/02 ,  H01F41/0233

Abstract: A grain-oriented electrical steel sheet is subjected to magnetic domain refining treatment by irradiating a steel sheet surface with an electron beam having a beam diameter d of 0.40 mm or less, wherein a modulated irradiation line region is formed with repeating units connected to each other in the line region direction, a periodic distance of the repeating units in the modulated irradiation line region is ⅔×d mm to 2.5×d mm, a repeating interval of the modulated irradiation line region in the rolling direction is 4.0 mm to 12.5 mm, and intensity of the electron beam is not lower than an intensity with which long and narrow divided magnetic domains extending in the modulated irradiation line region direction are formed at least on an irradiated side, and not higher than an intensity with which coating damage does not occur and a plastic strain region is not formed on the irradiated side.

Abstract translation: 通过用光束直径d为0.40mm以下的电子束照射钢板表面，对晶粒取向电工钢板进行磁畴精制处理，其中以相互连接的重复单元形成调制后的照射线区域 在线区域方向上，调制照射线区域中的重复单元的周期距离为⅔×dmm〜2.5×dmm，调制后的照射线区域的滚动方向的重复间隔为4.0mm〜12.5mm， 并且电子束的强度不低于至少在照射侧形成在调制的照射线区域方向上延伸的长且窄的分割磁畴的强度，并且不高于不会发生涂层损伤的强度 并且在照射侧不形成塑性应变区域。

公开(公告)号：US09512500B2

公开(公告)日：2016-12-06

申请号：US14129334

申请日：2012-08-16

Applicant: Masahiro Fujikura ,  Yoshiyuki Ushigami ,  Tesshu Murakawa ,  Shinichi Kanao ,  Makoto Atake ,  Takeru Ichie ,  Kojiro Hori ,  Shinichi Matsui

Inventor： Masahiro Fujikura ,  Yoshiyuki Ushigami ,  Tesshu Murakawa ,  Shinichi Kanao ,  Makoto Atake ,  Takeru Ichie ,  Kojiro Hori ,  Shinichi Matsui

IPC: C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/14 ,  C21D8/12 ,  H01F1/16 ,  B32B15/00 ,  C21D8/00 ,  C22C38/12 ,  B32B15/01 ,  C21D9/46 ,  H01F3/08

CPC classification number: C21D8/005 ,  B32B15/011 ,  C21D8/12 ,  C21D8/1244 ,  C21D8/1272 ,  C21D9/46 ,  C21D2201/05 ,  C21D2211/004 ,  C21D2211/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  H01F1/16 ,  H01F3/08 ,  Y10T428/12965

Abstract: When contents of Ti, V, Zr, Nb, and C (mass %) are represented as [Ti], [V], [Zr], [Nb], and [C] respectively, a value of a parameter Q represented by “Q=([Ti]/48+[V]/51+[Zr]/91+[Nb]/93)/([C]/12)” is not less than 0.9 nor more than 1.1. A matrix of a metal structure is a ferrite phase, and the metal structure does not include a non-recrystallized structure. An average grain size of ferrite grains constituting the ferrite phase is not less than 10 μm nor more than 200 μm. A precipitate containing at least one selected from the group consisting of Ti, V, Zr, and Nb exists with a density of 10 μm−3 or more in the ferrite grain. An average grain size of the precipitate is not less than 0.002 μm nor more than 0.2 μm.

Abstract translation: 当Ti，V，Zr，Nb和C（质量％）的含量分别表示为[Ti]，[V]，[Zr]，[Nb]和[C]时，由 “Q =（[Ti] / 48 + [V] / 51 + [Zr] / 91 + [Nb] / 93）/（[C] / 12）”不小于0.9也不大于1.1。 金属结构的基体是铁素体相，金属结构不包含未再结晶的结构。 构成铁素体相的铁素体晶粒的平均粒径为10μm以上200μm以下。 含有选自Ti，V，Zr和Nb中的至少一种的析出物在铁素体晶粒中的密度为10μm-3以上。 沉淀物的平均粒径不小于0.002μm，不大于0.2μm。

公开(公告)号：US09496078B2

公开(公告)日：2016-11-15

申请号：US14372689

申请日：2012-03-29

Applicant: Huawei Zhang ,  Yaping Wu ,  Yu Gong ,  Yezhong Sun ,  Hongxu Hei

Inventor： Huawei Zhang ,  Yaping Wu ,  Yu Gong ,  Yezhong Sun ,  Hongxu Hei

IPC: C21D6/00 ,  H01F1/147 ,  C21D8/12 ,  C21D1/26 ,  C22C38/02 ,  H01F41/00 ,  C21D8/02 ,  C21D8/04 ,  C21D9/00 ,  C21D9/70

CPC classification number: H01F1/14766 ,  C21D1/26 ,  C21D6/00 ,  C21D6/008 ,  C21D8/021 ,  C21D8/041 ,  C21D8/1205 ,  C21D8/1216 ,  C21D8/1244 ,  C21D9/0081 ,  C21D9/70 ,  C21D2201/05 ,  C22C38/02 ,  H01F41/00

Abstract: A hot rolled silicon steel producing method comprises: silicon steel slab heating process, rough rolling process and finish rolling process. The heating process comprises a pre-heating stage, a heating stage and a soaking stage. The pre-heating stage satisfies the following formula (1). In the formula, VTp is a temperature increasing rate, in the pre-heating stage, whose unit is ° C./min; t is a total heating time of the slab in the heating furnace, and t=180-240 min; and Tc is an initial temperature when the slab is put into the furnace, whose unit is ° C. By using the foregoing formula, the heating process and the rough rolling process are changed, an occurrence rate of edge defects during the production of the hot rolled silicon steel can be reduced, and the hot rolled silicon steel with good surface quality can be produced. V Tp > 220 ⁢ ⁢ min t × 100 ⁢ ° ⁢ ⁢ C . T C + 200 ⁢ ° ⁢ ⁢ C . × 25 ⁢ ° ⁢ ⁢ C . / ⁢ min ( 1 )

公开(公告)号：US20160326617A1

公开(公告)日：2016-11-10

申请号：US15109139

申请日：2014-12-24

Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION

Inventor： Tomohiko Omura ,  Yusaku Tomio ,  Hideki Takabe ,  Toshio Mochizuki

IPC: C22C38/54 ,  C22C38/48 ,  C22C38/46 ,  E21B17/00 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C22C38/50 ,  C22C38/44

CPC classification number: C22C38/54 ,  C21D1/22 ,  C21D6/002 ,  C21D8/105 ,  C21D9/085 ,  C21D2201/05 ,  C21D2211/001 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/18 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  E21B17/00

Abstract: A martensitic Cr-containing steel having excellent corrosion resistance, SSC resistance, and IGHIC resistance is provided. A martensitic Cr-containing steel according to the present invention includes: a chemical composition consisting of, by mass %, Si: 0.05 to 1.0%, Mn: 0.1 to 1.0%, Cr: 8 to 12%, V: 0.01 to 1.0%, sol. Al: 0.005 to 0.10%, with the balance being Fe and impurities, wherein an effective Cr amount defined by “Cr−16.6×C” is not less than 8%, and an Mo equivalent defined by “Mo+0.5×W” is 0.03 to 2%; a micro-structure wherein a grain size number of prior-austenite crystal grain is not less than 8.0; and a yield strength of less than 379 to 551 MPa, wherein a grain-boundary segregation ratio of Mo and W is not less than 1.5.

Abstract translation: 提供了具有优异的耐腐蚀性，耐SSC性和耐IGHIC性的马氏体含Cr钢。 根据本发明的马氏体含Cr钢包括：质量％Si：0.05〜1.0％，Mn：0.1〜1.0％，Cr：8〜12％，V：0.01〜1.0％ ，溶胶 Al：0.005〜0.10％，余量为Fe和杂质，其中由“Cr-16.6×C”定义的有效Cr量不小于8％，Mo值为0.5×W的Mo当量为 0.03〜2％ 其中先前奥氏体晶粒的晶粒数不小于8.0的微结构; 屈服强度小于379〜551MPa，其中Mo和W的晶界偏析比不小于1.5。

公开(公告)号：US20160319390A1

公开(公告)日：2016-11-03

申请号：US15208720

申请日：2016-07-13

Applicant: JFE STEEL CORPORATION

Inventor： Takeshi IMAMURA ,  Yukihiro SHINGAKI ,  Makoto WATANABE ,  Ryuichi SUEHIRO ,  Toshito TAKAMIYA

IPC: C21D9/46 ,  C21D6/00 ,  C22C38/60 ,  C22C38/40 ,  C22C38/00 ,  C22C38/12 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C21D8/12 ,  C22C38/16

CPC classification number: C21D9/46 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D8/12 ,  C21D8/1222 ,  C21D8/1233 ,  C21D8/1255 ,  C21D8/1261 ,  C21D8/1266 ,  C21D8/1272 ,  C21D8/1283 ,  C21D2201/05 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/16 ,  C22C38/34 ,  C22C38/40 ,  C22C38/60 ,  H01F1/14775 ,  H01F1/16

Abstract: In a method for producing a grain-oriented electrical steel sheet by including a series of steps of hot rolling a raw steel material containing C: 0.002-0.10 mass %, Si: 2.0-8.0 mass % and Mn: 0.005-1.0 mass % to obtain a hot rolled sheet, subjecting the hot rolled steel sheet after or without hot band annealing to one stage cold rolling or two or more stage cold rollings including an intermediate annealing therebetween to obtain a cold rolled sheet having a final sheet thickness, subjecting the cold rolled sheet to decarburization annealing combined with primary recrystallization annealing, applying an annealing separator to the steel sheet surface, and then subjecting to a final annealing.

Abstract translation: 在通过以下步骤的制造方向，其特征在于，包括将C：0.002〜0.10质量％，Si：2.0〜8.0质量％，Mn：0.005〜1.0质量％的粗钢材热轧的工序， 得到热轧板，在热轧带钢退火后进行一次冷轧，或者对其进行中间退火的两台以上的阶段冷轧，得到最终板厚的冷轧板，对冷轧 轧制板与脱碳退火结合一次再结晶退火，在钢板表面上涂布退火分离剂，然后进行最终退火。

公开(公告)号：US20160276081A1

公开(公告)日：2016-09-22

申请号：US15168660

申请日：2016-05-31

Applicant: JFE Steel Corporation

Inventor： Takeshi Omura ,  Hiroi Yamaguchi ,  Seiji Okabe

IPC: H01F3/02 ,  C21D8/12 ,  C21D3/04 ,  C22C38/00 ,  C22C38/08 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C21D9/46 ,  C22C38/60

CPC classification number: H01F1/01 ,  C21D3/04 ,  C21D8/1222 ,  C21D8/1233 ,  C21D8/1255 ,  C21D8/1283 ,  C21D8/1288 ,  C21D8/1294 ,  C21D9/46 ,  C21D10/005 ,  C21D2201/05 ,  C22C38/001 ,  C22C38/002 ,  C22C38/004 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/60 ,  H01F1/18 ,  H01F3/02 ,  H01F41/064

Abstract: A method of manufacturing a grain oriented electrical steel sheet includes a rolling a slab for a grain oriented electrical steel sheet to obtain a steel sheet having final sheet thickness; subjecting the steel sheet to decarburizing annealing; coating a surface of the steel sheet with annealing separator mainly composed of MgO; subjecting the steel sheet thus coated to final annealing; providing a tension coating to the steel sheet; and subjecting the steel sheet to magnetic domain refinement by laser irradiation after either the final annealing or provision of the tension coating, wherein (1) the coating weight of the anneal separator is at least 10.0 g/m2; (2) coiling tension at which the steel sheet is coiled after being coated with the annealing separator is 30 N/mm2 to 150 N/mm2; and (3) the average cooling rate in cooling process of the final annealing down to 700° C. is 50° C./hour or less.

Abstract translation: 晶粒取向电工钢板的制造方法包括轧制用于晶粒取向电工钢板的板坯，以获得具有最终板厚度的钢板; 对钢板进行脱碳退火; 用主要由MgO组成的退火分离器涂覆钢板表面; 对被涂覆的钢板进行最终退火; 向钢板提供张力涂层; 并且在最终退火或提供张力涂层之后，通过激光照射对钢板进行磁畴精制，其中（1）退火隔板的涂层重量为至少10.0g / m 2; （2）退火分离器涂布钢板卷绕后的卷取张力为30N / mm2〜150N / mm2; 和（3）最终退火至700℃的冷却过程中的平均冷却速度为50℃/小时以下。

公开(公告)号：US20160260531A1

公开(公告)日：2016-09-08

申请号：US15028841

申请日：2014-10-23

Applicant: JFE STEEL CORPORATION

Inventor： Takashi TERASHIMA ,  Makoto WATANABE ,  Masanori UESAKA ,  Ryuichi SUEHIRO ,  Toshito TAKAMIYA

IPC: H01F1/147 ,  C22C38/16 ,  C22C38/06 ,  C21D8/12 ,  C22C38/02 ,  C22C38/00 ,  C21D9/46 ,  C21D8/02 ,  C22C38/60 ,  C22C38/04

CPC classification number: H01F1/14783 ,  C21D8/0205 ,  C21D8/0236 ,  C21D8/0273 ,  C21D8/0289 ,  C21D8/12 ,  C21D8/1233 ,  C21D8/1244 ,  C21D8/1272 ,  C21D8/1283 ,  C21D8/1288 ,  C21D9/46 ,  C21D2201/05 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/16 ,  C22C38/60 ,  C23C22/33 ,  C23C22/74 ,  H01F1/18

Abstract: There is provided a grain-oriented electrical steel sheet stably having excellent magnetic characteristics and coating adhesion even when a rapid heating is conducted in a primary recrystallization annealing (decarburization annealing). Concretely, it is a grain-oriented electrical steel sheet provided on its sheet surface with a tension-applying type insulation coating constituted with a coating layer A formed on a steel sheet side and mainly composed of an oxide and a coating layer B formed on a surface side and mainly composed of glass, characterized in that a ratio R (σB/σA) of a tension σB of the coating layer B on the surface side applied to the steel sheet to a tension σA of the coating layer on the steel sheet side A applied to the steel sheet is within a range of 1.20-4.0.

Abstract translation: 即使在一次再结晶退火（脱碳退火）中进行快速加热，也提供了稳定地具有优异的磁特性和涂层粘附性的晶粒取向电工钢板。 具体地说，它是一种在其表面上设置有张力施加型绝缘涂层的晶粒取向电工钢板，其由在钢板侧形成的主要由氧化物和涂层B形成的涂层B构成， 表面侧，主要由玻璃构成，其特征在于，涂布在钢板表面侧的涂层B的张力σB与钢板侧的涂层的张力σA的比率R（σB/σA） 应用于钢板的A在1.20〜4.0的范围内。