公开(公告)号：US20180347018A1

公开(公告)日：2018-12-06

申请号：US15527794

申请日：2015-11-04

申请人： SALZGITTER FLACHSTAHL GMBH

发明人： Thomas Schulz ,  Joachim Schöttler ,  Sascha Kluge ,  Christian Meyer ,  Peter Matthies ,  Andreas Wedemeier

IPC分类号： C22C38/02 ,  C21D8/02 ,  C21D9/46 ,  C21D9/56 ,  C21D9/58 ,  C22C38/04 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/38 ,  C22C38/58

CPC分类号： C22C38/02 ,  C21D8/02 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0263 ,  C21D8/0273 ,  C21D9/46 ,  C21D9/561 ,  C21D9/562 ,  C21D9/58 ,  C21D2211/002 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/04 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/38

摘要： A high-strength air-hardenable multiphase steel having minimal tensile strengths in a non air hardened state of 750 MPa and excellent processing properties, said steel comprising the following elements in % by weight: C≥0.075 to ≤0.115; Si≥0.200 to ≤0.300; Mn≥1.700 to ≤2.300; Cr≥0.280 to ≤0.4800; Al≥0.020 to ≤0.060; N≥0.0020 to ≤0.0120; S≤0.0050; Nb≥0.005 to ≤0.050; Ti≥0.005 to ≤0.050; B≥0.0005 to ≤0.0060; Ca≥0.0005 to ≤0.0060; Cu≤0.050; Ni≤0.050; remainder iron, including usual steel accompanying smelting related impurities, wherein for a widest possible process window during continuous annealing of hot rolled or cold rolled strips made from the steel a sum content of M+Si+Cr in the steel is a function of a thickness of the steel strips according to the following relationship: for strip thicknesses of up to 1.00 mm the sum content of M+Si+Cr is ≥2.350 and ≤2.500%, for strip thicknesses of over 1.00 to 2.00 mm the sum of Mn+Si+Cr is ≥2.500 and ≤2.950%, and for strip thicknesses of over 2.00 mm the sum of Mn+Si+Cr is ≥2.950 and ≤3.250%.

公开(公告)号：US20180265954A1

公开(公告)日：2018-09-20

申请号：US15763164

申请日：2016-09-27

申请人： NIPPON STEEL & SUMITOMO METAL CORPORATION

发明人： Kazuhiko ADACHI ,  Akihiro NISHIMURA ,  Shinichi TERAOKA ,  Hideki FUJII

IPC分类号： C22C38/50 ,  C22C38/48 ,  C22C38/46 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00

CPC分类号： C22C38/50 ,  C21D1/76 ,  C21D6/004 ,  C21D8/0278 ,  C21D9/561 ,  C21D2211/001 ,  C22C38/00 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/40 ,  C22C38/46 ,  C22C38/48 ,  C22C38/58 ,  C23C8/02 ,  C23C8/26

摘要： An austenitic stainless steel according to the present invention has a chemical composition containing, by mass %: C: 0.01 to 0.15%; Si: 2.0% or less; Mn: 3.0% or less; Cr: 10.0 to 20.0%; Ni: 5.0 to 13.0%; N: 0.01 to 0.30%; Nb: 0 to 0.5%; Ti: 0 to 0.5%; and V: 0 to 0.5%, with the balance: Fe and impurities, wherein an average grain size is 10.0 μm or less, a difference in value of an average lattice constant dAve. (={dγ(111)×Iγ(111)+dγ(200)×Iγ(200)+dγ(220)×Iγ(220)+dγ(311)×Iγ(311)}/{Iγ(111)+Iγ(200)+Iγ(220)+Iγ(311}) of an austenite phase between a surface portion and a center portion is 0.010 Å or more, and a value of a diffraction peak integrated intensity ratio r (=100×ΣIγ/ΣIALL) at a surface is 95% or more.

公开(公告)号：US09873934B2

公开(公告)日：2018-01-23

申请号：US15021508

申请日：2014-09-11

申请人： JFE STEEL CORPORATION

发明人： Minoru Tanaka ,  Yoshitsugu Suzuki ,  Yasunobu Nagataki

IPC分类号： C23C2/40 ,  C23C2/02 ,  C23C2/06 ,  C21D9/56 ,  C22C18/04 ,  C22C38/00 ,  C23C8/10 ,  C23C8/26 ,  C23C8/34 ,  C21D1/74 ,  C21D1/76 ,  C21D8/02 ,  C21D1/52 ,  C21D6/00 ,  C21D9/46 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/22 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/34 ,  C22C38/38 ,  C22C38/42 ,  C22C38/48 ,  C22C38/50 ,  C22C38/58 ,  C23C2/28 ,  B32B15/01 ,  C22C18/00 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/20 ,  C22C38/44 ,  C22C38/54

CPC分类号： C23C2/40 ,  B32B15/013 ,  C21D1/52 ,  C21D1/74 ,  C21D1/76 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0205 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0247 ,  C21D8/0263 ,  C21D8/0278 ,  C21D9/46 ,  C21D9/56 ,  C21D9/561 ,  C21D2211/004 ,  C21D2211/005 ,  C22C18/00 ,  C22C18/04 ,  C22C38/00 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/20 ,  C22C38/22 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/34 ,  C22C38/38 ,  C22C38/42 ,  C22C38/44 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54 ,  C22C38/58 ,  C23C2/02 ,  C23C2/06 ,  C23C2/285 ,  C23C8/10 ,  C23C8/26 ,  C23C8/34

摘要： A hot-dip galvanized steel sheet having a good appearance and good adhesion to a coating, the hot-dip galvanized steel sheet having a composition including, on a mass basis: C: 0.20% to 0.50%, Si: 0.1% to 3.0%, Mn: 0.5% to 3.0%, P: 0.001% to 0.10%, Al: 0.01% to 3.00%, and S: 0.200% or less, a remainder being Fe and incidental impurities, wherein the hot-dip galvanized steel sheet includes an internal oxidation layer and a decarburized layer, the internal oxidation layer having a thickness of 4 μm or less, the decarburized layer having a thickness of 16 μm or less, and 50% or more by area of the internal oxidation layer is composed of a Si oxide containing Fe and/or Mn represented by Fe2XMn2-2XSiOY, wherein X ranges from 0 to 1, and Y is 3 or 4.

公开(公告)号：US09631867B2

公开(公告)日：2017-04-25

申请号：US13516327

申请日：2010-03-25

申请人： Pierre-Jerome Borrel

发明人： Pierre-Jerome Borrel

IPC分类号： F27D17/00 ,  B05C9/14 ,  F27B9/28 ,  F27D99/00 ,  C21D9/56 ,  F23C3/00 ,  C21D9/00 ,  F27B9/00 ,  C21D11/00 ,  F23D14/12

CPC分类号： F27B9/28 ,  C21D9/56 ,  C21D9/561 ,  C21D9/562 ,  F27D99/0035

摘要： Equipment and a method for preheating a continuously moving steel strip, in particular before feeding the same into a continuous annealing or hot-dip galvanizing furnace, involves the continuous movement of the steel strip in a preheating chamber including a preheating circuit having at least one preheating tube, the inner surface of which is in contact with externally-recovered burnt gases (e.g. from the furnace). A portion of the outer surface of the preheating tube is disposed directly opposite a surface of the strip in order to provide a first preheating mode by irradiating heat onto the strip and the walls of the chamber, and a second preheating mode, mainly by convection, of a gas constituting a controlled atmosphere in the preheating chamber.

公开(公告)号：US20170082364A1

公开(公告)日：2017-03-23

申请号：US15122931

申请日：2015-02-20

申请人： Cockerill Maintenance & Ingenierie S.A.

发明人： Ludovic Ferrand ,  Patrick Dubois ,  Eduardo Pinto de Sousa

IPC分类号： F27B9/30 ,  F27D17/00 ,  F27B9/36 ,  F27B9/20

CPC分类号： F27B9/3044 ,  C21D9/561 ,  C21D9/562 ,  F27B9/20 ,  F27B9/28 ,  F27B9/36 ,  F27D17/004 ,  F27D17/008 ,  F27D2017/007

摘要： An industrial furnace for heating products such as steel products includes a thermally insulated enclosure, a plurality of burners arranged in the enclosure for heating products passing from one end of the enclosure to the other, the burners being distributed over a plurality of temperature-regulated heating areas, and a recovery system designed for recovering heat energy from recovery fumes, The recovery system includes a rotary regenerator associated with each heating area, each of the rotary regenerators being configured to receive a predetermined flow rate of recovery fumes via a first duct, receive a predetermined flow rate of supply air via a second duct, preheat the supply air in order to supply the burners of the associated heating area with a predetermined flow rate of preheated combustion air via a third duct, and discharge exhaust fumes via a fourth duct.

公开(公告)号：US20170067131A1

公开(公告)日：2017-03-09

申请号：US15119778

申请日：2015-02-03

申请人： JFE Steel Corporation

发明人： Yusuke Fushiwaki ,  Yoshiyasu Kawasaki

IPC分类号： C21D9/46 ,  C22C38/60 ,  C22C38/38 ,  C22C38/16 ,  C22C38/14 ,  C21D6/00 ,  C22C38/08 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C25F1/06 ,  C22C38/12

CPC分类号： C21D9/46 ,  C21D1/26 ,  C21D1/76 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0473 ,  C21D9/561 ,  C22C38/00 ,  C22C38/002 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/38 ,  C22C38/60 ,  C25F1/06

摘要： A steel sheet contains, by mass %, 0.03% to 0.35% C, 0.01% to 0.50% Si, 3.6% to 8.0% Mn, 0.01% to 1.0% Al, 0.10% or less P, and 0.010% or less S, the remainder being Fe and inevitable impurities. The steel sheet is continuously annealed, heated at a heating rate of 7° C./s or more in a temperature range corresponding to an annealing furnace inside temperature of 450° C. to A° C. (where 500≦A≦600), the maximum end-point temperature of the steel sheet in an annealing furnace is 600° C. to 700° C., the transit time of the steel sheet in a temperature range corresponding to a steel sheet temperature of 600° C. to 700° C. is 30 seconds to 10 minutes, and the concentration of hydrogen in an atmosphere is 20% by volume or more in a heating step.

摘要翻译： 钢板以质量％计含有0.03％〜0.35％的C，0.01％〜0.50％的Si，3.6％〜8.0％的Mn，0.01％〜1.0％的Al，0.10％以下的P和0.010％以下的S， 余量为Fe和不可避免的杂质。 将钢板连续退火，在450℃〜450℃的退火炉对应的温度范围内以7℃/ s以上的加热速度加热。（500≤A≤600） ，退火炉中的钢板的最终终点温度为600℃〜700℃，钢板在钢板温度为600℃〜700℃的运转时间 ℃为30秒〜10分钟，在加热工序中，气氛中的氢浓度为20体积％以上。

公开(公告)号：US09534270B2

公开(公告)日：2017-01-03

申请号：US13822832

申请日：2010-09-30

申请人： Yusuke Fushiwaki ,  Yoshitsugu Suzuki

发明人： Yusuke Fushiwaki ,  Yoshitsugu Suzuki

IPC分类号： C21D8/02 ,  C21D9/46 ,  C21D9/56 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C23C8/14 ,  C23F17/00 ,  C21D1/76 ,  C09D5/44

CPC分类号： C21D8/0247 ,  C09D5/4488 ,  C21D1/76 ,  C21D9/46 ,  C21D9/561 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C23C8/14 ,  C23F17/00

摘要： The invention provides a high strength steel sheet which exhibits excellent chemical convertibility and corrosion resistance after electrodeposition coating even in the case where the steel sheet has a high Si content, and a method for manufacturing such steel sheets. The method includes continuous annealing of a steel sheet which includes, in terms of mass %, C at 0.01 to 0.18%, Si at 0.4 to 2.0%, Mn at 1.0 to 3.0%, Al at 0.001 to 1.0%, P at 0.005 to 0.060% and S at ≦0.01%, the balance being represented by Fe and inevitable impurities, while controlling the dew-point temperature of the atmosphere to become not more than −40° C. when the annealing furnace inside temperature is in the range of not less than 750° C.

摘要翻译： 本发明提供了即使在钢板具有高Si含量的情况下，也可以在电沉积涂布后表现出优异的化学转化性和耐腐蚀性的高强度钢板及其制造方法。 该方法包括钢板的连续退火，以质量％表示，以0.01〜0.18％的C，0.4〜2.0％的Si，1.0〜3.0％的Mn，0.001〜1.0％的Al，0.005〜 0.060％，S≤0.01％，余量由Fe和不可避免的杂质表示，当退火炉内部温度在室温的范围内时，气氛的露点温度控制在-40℃以下 不低于750℃

公开(公告)号：US09309586B2

公开(公告)日：2016-04-12

申请号：US13258209

申请日：2010-03-30

申请人： Yusuke Fushiwaki ,  Yoshiharu Sugimoto ,  Masahiro Yoshida ,  Yoshitsugu Suzuki

发明人： Yusuke Fushiwaki ,  Yoshiharu Sugimoto ,  Masahiro Yoshida ,  Yoshitsugu Suzuki

IPC分类号： C23C2/06 ,  C23C2/12 ,  C21D1/26 ,  C21D9/46 ,  C21D9/56 ,  C22C1/00 ,  C23C2/02 ,  C23C2/28 ,  C23C2/40

CPC分类号： C23C2/12 ,  C21D1/26 ,  C21D9/46 ,  C21D9/561 ,  C21D2211/004 ,  C21D2211/005 ,  C22C1/002 ,  C23C2/02 ,  C23C2/06 ,  C23C2/28 ,  C23C2/40

摘要： Provided is a method for manufacturing a high-strength galvanized steel sheet, made from a steel sheet containing Si and/or Mn, having excellent exfoliation resistance during heavy machining. When a steel sheet containing 0.01% to 0.18% C, 0.02% to 2.0% Si, 1.0% to 3.0% Mn, 0.001% to 1.0% Al, 0.005% to 0.060% P, and 0.01% or less S on a mass basis, the remainder being Fe and unavoidable impurities, is annealed and galvanized in a continuous galvanizing line, a temperature region with a furnace temperature of A° C. to B° C. (600≦A≦780 and 800≦B≦900) is performed at an atmosphere dew-point temperature of −5° C. or higher in a heating process.

摘要翻译： 提供一种由含有Si和/或Mn的钢板制成的高强度镀锌钢板的方法，其在重型加工过程中具有优异的耐剥离性。 当以质量计含有0.01％至0.18％的C，0.02％至2.0％的Si，1.0％至3.0％的Mn，0.001％至1.0％的Al，0.005％至0.060％的P和0.01％以下的钢 剩余部分为Fe和不可避免的杂质，在连续镀锌生产线中，炉温为A°C至B℃的温度区域（600＆amp; A＆amp; 780和800＆amp; NlE; B＆nlE; 900）进行退火和镀锌 在加热过程中在大气露点温度为-5℃以上时进行。

公开(公告)号：US20160017471A1

公开(公告)日：2016-01-21

申请号：US14772468

申请日：2014-02-28

申请人： JFE STEEL CORPORATION

发明人： Yoichi Makimizu ,  Yoshitsugu Suzuki ,  Yasunobu Nagataki

IPC分类号： C23C2/02 ,  C23C8/14 ,  B32B15/01 ,  C22C38/00 ,  C22C38/02 ,  C21D9/46 ,  C23C2/34 ,  C22C38/04

CPC分类号： C23C2/02 ,  B32B15/013 ,  C21D1/76 ,  C21D8/0478 ,  C21D9/46 ,  C21D9/561 ,  C22C18/04 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C23C2/06 ,  C23C2/28 ,  C23C2/34 ,  C23C8/14

摘要： A high-strength galvanized steel sheet whose base steel is a high-strength steel sheet contains Si, Mn, and B and has good coating adhesiveness. A base steel sheet containing Si, Mn, and B is oxidized at a heating temperature of steel sheet T that satisfies the formula, and then subjected to reduction-annealing and galvanizing T≧58.65×[Si]+29440×[B]−13.59×[O2]+548.1 [Si]: amount of Si in the steel on a mass percent basis [B]: amount of B in the steel on a mass percent basis [O2]: O2 concentration on a volume percent basis in an atmosphere at oxidizing treatment.

摘要翻译： 基材是高强度钢板的高强度镀锌钢板含有Si，Mn和B，并具有良好的涂层密合性。 含有Si，Mn，B的基础钢板在满足公式的钢板T的加热温度下被氧化，然后进行还原退火和镀锌T≥58.65×[Si] + 29440×[B] -13.59 ×[O 2] +548.1 [Si]：以质量％计的钢中的Si量[B]：以质量％计的钢中的B量[O 2]：在大气中以体积百分比计的O 2浓度 在氧化处理。

公开(公告)号：US20150203950A1

公开(公告)日：2015-07-23

申请号：US14414066

申请日：2013-07-10

申请人： KTS WIRE LTD. ,  AIR PRODUCTS GMBH

发明人： Maximus Akuh ,  Guido Plicht ,  Kris Wiloch ,  Brian Cashmore

IPC分类号： C23C8/12 ,  C21D1/76 ,  C23F17/00 ,  C21D9/52

CPC分类号： C23C8/12 ,  C21D1/74 ,  C21D1/76 ,  C21D9/52 ,  C21D9/525 ,  C21D9/54 ,  C21D9/56 ,  C21D9/561 ,  C21D9/562 ,  C21D9/60 ,  C23C8/02 ,  C23C8/10 ,  C23C8/14 ,  C23F17/00 ,  Y02P10/253

摘要： A method and apparatus are provided for making a metal product with improved surface characteristics. The method provides for treating the metal product through a method including: heating the metal product; exposing the outer surface of the metal product to a controlled environment; and oxidising the outer surface of the metal product. The heating may take the metal product to an elevated temperature, the elevated temperature of the metal product being at least 725° C. The method further includes a controlled environment around the metal product which is controlled with respect to the atmosphere around the metal product, and in particular the nitrogen and/or oxygen and/or hydrogen content thereof. The result is a more consistent surface for elongate metal products, having a more consistent colour to the surface, a more durable and hard wearing surface and/or a surface which is not prone to flaking.

摘要翻译： 提供了一种用于制造具有改进的表面特性的金属产品的方法和装置。 该方法提供了通过以下方法处理金属产品：包括：加热金属产品; 将金属产品的外表面暴露于受控环境; 并氧化金属制品的外表面。 加热可以使金属产品升高温度，金属产品的升高温度至少为725℃。该方法还包括围绕金属产品控制的围绕金属产品的受控环境， 特别是其氮和/或氧和/或氢含量。 结果是对于细长金属产品的更加一致的表面，具有与表面更一致的颜色，更耐用和耐磨损的表面和/或不容易剥落的表面。