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1.发明公开公开(公告)号：US20240102124A1
公开(公告)日：2024-03-28
申请号：US18532051
申请日：2023-12-07
申请人： DREVER INTERNATIONAL
摘要： Method for thermally treating a scrolling steel strip (5), said method comprising the following steps: heating the strip (5) in a zone for heating with a direct flame (10); temperature homogenisation of the strip (5) in a homogenisation chamber (20) comprising at least one radiant heating tube (25), so as to homogenise the strip (5) in temperature after the passing thereof into the zone for heating with a direct flame (10) of the preceding step; oxidation of the strip (5) in an oxidation chamber (30) with an oxidising atmosphere having an oxygen volume concentration greater than 1%; reduction of the strip (5) in a reduction zone (40).
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公开(公告)号：US20230287552A1
公开(公告)日：2023-09-14
申请号：US18196003
申请日：2023-05-11
申请人： ArcelorMittal
摘要： Equipment for the continuous hot dip-coating of a metal strip 9 including an annealing furnace, a tank 2 containing a liquid metal bath 3, a snout connecting the annealing furnace and tank 2, through which the metal strip 9 runs in a protective atmosphere and the lower part of the snout, the sabot 5, is at least partly immersed in the liquid metal bath 3 in order to define with the surface of the bath, and inside this snout, a liquid seal 6, an overflow 7 not connected to the snout, the overflow 7 including at least one tray 8, placed in the vicinity of the strip 9 when entering the liquid metal bath 3 and encompassed by liquid seal 6.
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公开(公告)号：US20180237896A1
公开(公告)日：2018-08-23
申请号：US15753260
申请日：2016-08-05
CPC分类号： C23C2/02 , C21D1/76 , C21D9/561 , C21D9/573 , C22C38/00 , C22C38/02 , C22C38/04 , C23C2/06 , C23C2/28 , C23C2/40
摘要： A method includes: annealing a steel strip by conveying the steel strip through a heating zone, a soaking zone, and a cooling zone in this order inside an annealing furnace; and applying a hot-dip galvanized coating onto the steel strip discharged from the cooling zone. Reducing gas or non-oxidizing gas supplied into the soaking zone includes humidified gas and dry gas. While a width and a sheet passing speed of the steel strip passing through the soaking zone are constant, a variation of pressure in the annealing furnace is suppressed by adjusting a flow rate of the dry gas, and a variation range of an amount of moisture supplied into the soaking zone by the humidified gas is limited to 20% or less.
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公开(公告)号：US20180100209A1
公开(公告)日：2018-04-12
申请号：US15566725
申请日：2016-04-19
发明人： Michel Dubois
CPC分类号： C21D1/76 , C21D9/46 , C21D9/561 , C21D9/60 , C21D9/62 , C21D11/00 , C23C2/02 , C23C8/10 , Y02P10/253
摘要： A method for controlling surface reactions on a steel strip running through a furnace includes, successively, a first section, a second section, and a third section separated by a sealing element, an atmosphere in the second and third sections being oxidizing and reducing respectively, the method including: heating, in the first section, the steel strip to between 600 and 750° C., while causing the atmosphere therein to be slightly oxidizing and to include: an H2 content inferior to 2%; an O2 content inferior to 0.1%; an H2O or CO2, or H2O+CO2 content superior to 0.03%; a controlled dew point ranging from −50 to −15° C.; and a controlled concentration of CO+CO2 maintained below 2%. All percentages are expressed in terms of volume.
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公开(公告)号：US20170175222A1
公开(公告)日：2017-06-22
申请号：US15383823
申请日：2016-12-19
发明人： Martin STILLGER
CPC分类号： C21D9/562 , B21D22/022 , B21D37/08 , B21D37/16 , C21D1/18 , C21D8/0221 , C21D8/0247 , C21D9/0056 , C21D9/561
摘要： A tool arrangement is disclosed for integration in a production line for producing a hot formed component from a blank which is produced from a hot forming steel strip. The tool arrangement includes a housing, which delimits an interior of the tool arrangement relative to a surroundings of the tool arrangement, a tempering station for tempering the blank and a hot forming station for hot forming the blank. The tempering station and the hot forming station are jointly arranged in the interior.
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公开(公告)号：US20170166990A1
公开(公告)日：2017-06-15
申请号：US15118231
申请日：2015-02-06
IPC分类号： C21D9/46 , C21D9/56 , C23C2/02 , C23C2/06 , C23C2/28 , C23C2/40 , C21D6/00 , C22C38/38 , C22C38/16 , C22C38/14 , C22C38/12 , C22C38/08 , C22C38/06 , C22C38/04 , C22C38/02 , C22C38/00 , C22C38/60 , C21D1/26
CPC分类号： C21D9/46 , B32B15/013 , C21D1/26 , C21D6/005 , C21D9/561 , C21D2211/004 , C21D2211/005 , C22C38/00 , C22C38/002 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/38 , C22C38/60 , C23C2/02 , C23C2/06 , C23C2/28 , C23C2/40
摘要： Disclosed is a high-strength hot-dip galvanized steel sheet produced from a steel sheet containing Si and Mn as a base material and excellent in coating appearance, corrosion resistance, resistance to coating delamination during severe forming, and formability during severe forming. Also disclosed is a method for producing the high-strength hot-dip galvanized steel sheet. In a heating process for annealing, the following (Condition 1) to (Condition 3) are used: (Condition 1) In the heating process for annealing, the rate of temperature rise when the temperature inside an annealing furnace is in a temperature range of from 450° C. to A° C. inclusive (where A is an arbitrary value selected in a range of 500≦A) is 7° C./sec. or more; (Condition 2) The maximum steel sheet temperature reached during the annealing is 600° C. or higher and 750° C. or lower; (Condition 3) When the temperature of the steel sheet is in a temperature range of from 600° C. to 750° C. inclusive during the annealing, the transit time of the steel sheet in the temperature range of from 600° C. to 750° C. Inclusive is 30 seconds or longer and 10 minutes or shorter, and the dew point of an atmosphere is −45° C. or lower.
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公开(公告)号：US09657366B2
公开(公告)日：2017-05-23
申请号：US14391077
申请日：2013-04-05
发明人： Takamasa Fujii , Masato Iri , Nobuyuki Sato
摘要： Part of an atmosphere gas in a heating zone and/or a soaking zone is sucked out and is cooled through a high-temperature gas passage of a heat exchanger by heat exchange with a gas in a low-temperature gas passage, then cooled through a gas cooler, then dehumidified to a dew point of −45° C. or less in a dryer, then heated through the low-temperature gas passage of the heat exchanger by heat exchange with a gas in the high-temperature gas passage, and returned to the heating zone and/or the soaking zone. Part of gas flowing from the dryer toward the low-temperature gas passage of the heat exchanger is returned to a cooling zone. These can achieve a low dew point of −45° C. or less with high energy efficiency.
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8.发明授权Apparatus and method for the treatment of a flat steel product, taking place in throughput 有权用于处理扁钢产品的设备和方法，以生产量进行公开(公告)号：US09551046B2
公开(公告)日：2017-01-24
申请号：US14116530
申请日：2012-03-30
申请人： Marc Blumenau , Karsten Machalitza , Michael Peters , Rudolf Schoenenberg , Sabine Zeizinger , Martin Norden
发明人： Marc Blumenau , Karsten Machalitza , Michael Peters , Rudolf Schoenenberg , Sabine Zeizinger , Martin Norden
IPC分类号： C21D1/74 , C21D9/00 , C21D9/56 , F27B9/06 , F27B9/30 , F27D7/02 , F27D7/06 , F27D99/00 , C21D1/26
CPC分类号： C21D9/0056 , C21D1/26 , C21D9/561 , F27B9/06 , F27B9/3005 , F27D7/02 , F27D7/06 , F27D99/0075
摘要： An apparatus and a method for the treatment of a flat steel product, taking place in throughput. The apparatus includes an indirectly heated annealing furnace chamber, a conveyor device for continuously conveying the flat steel product over a conveyor path leading from an entry to an exit of the annealing furnace chamber, and nozzle arrangements for feeding atmosphere gas, which is reactive in relation to the flat steel product, into the annealing furnace chamber. A controlled treatment of the flat steel product includes a first nozzle arrangement, from which a gas jet induces a first gas flow towards the entry of the annealing furnace chamber and sweeping over the surface of flat steel product to be treated. A second nozzle arrangement includes a gas jet which induces a second gas flow directed towards the exit of the annealing furnace chamber and sweeping over the surface of flat steel product.
摘要翻译： 一种用于处理扁钢产品的设备和方法。 该设备包括间接加热的退火炉室，用于在从退火炉室的入口到出口的输送路径上连续输送扁钢产品的输送装置，以及用于进入气氛气体的喷嘴装置 对扁钢产品进入退火炉室。 扁钢产品的受控处理包括第一喷嘴装置，气体喷射器从该第一喷嘴装置引入朝向退火炉室入口的第一气流，并在待处理的扁钢产品的表面上扫过。 第二喷嘴装置包括气体射流，其引起朝向退火炉室的出口的第二气流并且扫过扁钢产品的表面。
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9.发明授权公开(公告)号：US09315887B2
公开(公告)日：2016-04-19
申请号：US13260851
申请日：2010-03-31
IPC分类号： C23C2/28 , C21D1/26 , C21D9/46 , C21D9/56 , C22C38/02 , C22C38/04 , C22C38/06 , C23C2/02 , C23C2/12 , C23C2/40 , C21D6/00 , B32B15/01 , C21D9/48
CPC分类号： C23C2/28 , C21D1/26 , C21D9/46 , C21D9/48 , C21D9/561 , C21D2211/005 , C22C38/02 , C22C38/04 , C22C38/06 , C23C2/02 , C23C2/12 , C23C2/40
摘要： A method for producing a high-strength hot-dip galvanized steel sheet includes a steel sheet containing, in percent by mass, 0.01% to 0.18% of C, 0.02% to 2.0% of Si, 1.0% to 3.0% of Mn, 0.001% to 1.0% of Al, 0.005% to 0.060% of P, 0.01% or less of S, and the balance being Fe and incidental impurities, and a galvanized coating layer on each surface of the steel sheet with a coating weight of 20 to 120 g/m2 per surface, in which, when the steel sheet is subjected to annealing and a hot-dip galvanizing treatment in a continuous hot-dip galvanizing line, the dew point of the atmosphere is controlled to −40° C. or lower in the annealing furnace temperature range of 750° C. or higher.
摘要翻译： 高强度热浸镀锌钢板的制造方法包括：以质量％计，含有0.01％〜0.18％的C，0.02〜2.0％的Si，1.0〜3.0％的Mn，0.001 ，Al：0.01〜1.0％，P：0.005〜0.060％，S：0.01％以下，余量由Fe和附带杂质构成，镀锌层的镀层重量为20〜 每个表面120克/平方米，其中当在连续热浸镀锌生产线中对钢板进行退火和热浸镀锌处理时，将气氛的露点控制在-40℃或更低 在退火炉的温度范围为750℃以上。
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公开(公告)号：US20150329946A1
公开(公告)日：2015-11-19
申请号：US14654762
申请日：2012-12-25
发明人： Takeshi YASUI , Kojiro AKIBA , Kiyokazu ISHIZUKA , Koki TANAKA
IPC分类号： C22C38/38 , C22C38/16 , C22C38/08 , C22C38/14 , C22C38/12 , C22C38/06 , C22C38/04 , C22C38/02 , C22C38/00 , C22C18/04 , C22C18/00 , C23C2/06 , C21D1/48 , C21D1/84 , C21D1/26 , C21D6/00 , C23F17/00 , B32B15/01 , C22C38/18
CPC分类号： C22C38/38 , B32B15/013 , B32B15/043 , B32B15/18 , C21D1/26 , C21D1/48 , C21D1/74 , C21D1/84 , C21D6/004 , C21D6/005 , C21D6/008 , C21D8/0478 , C21D9/561 , C21D2211/004 , C22C18/00 , C22C18/04 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/18 , C22C38/58 , C23C2/02 , C23C2/06 , C23C2/28 , C23C28/321 , C23C28/322 , C23C28/345 , C23C30/00 , C23C30/005 , C23F17/00 , Y10T428/12792 , Y10T428/12799 , Y10T428/12972 , Y10T428/12979 , Y10T428/24942 , Y10T428/24967 , Y10T428/265
摘要： A galvannealed steel sheet includes: a steel sheet; a coating layer on a surface of the steel sheet; and a mixed layer formed between the steel sheet and the coating layer, in which the mixed layer includes a base iron portion having fine grains having a size of greater than 0 μm and equal to or smaller than 2 μm, a Zn—Fe alloy phase, and oxides containing one or more types of Mn, Si, Al, and Cr, and in the mixed layer, the oxides and the Zn—Fe alloy phase are present in grain boundaries that form the fine grains and the Zn—Fe alloy phase is tangled with the base iron portion. [Mn]+[Si]+[Al]+[Cr]≧0.4 (Expression 1)
摘要翻译： 合金化热镀锌钢板包括：钢板; 钢板表面上的涂层; 以及在钢板和涂层之间形成的混合层，其中混合层包括具有大于0μm且等于或小于2μm的尺寸的细晶粒的基底铁部分，Zn-Fe合金相 和含有一种或多种Mn，Si，Al和Cr的氧化物，并且在混合层中，氧化物和Zn-Fe合金相存在于形成细晶粒和Zn-Fe合金相的晶界中 与基部铁部分缠结。 [Mn] + [Si] + [Al] + [Cr]≥0.4（表达式1）
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