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1. 发明授权

US11027330B2 Method of thin strip casting 有权
公开(公告)号：US11027330B2
公开(公告)日：2021-06-08
申请号：US16323976
申请日：2017-08-10
申请人： NUCOR CORPORATION
发明人： Mark Schlichting , Volus McKenna , Alan Deno , James M. Thomas , Philippe Maurice Fettig , Harold Bradley Rees , Nick Corea , Michael Ponder
IPC分类号： B22D11/06 , B22D11/11 , B22D11/114 , B22D11/12 , B22D27/00
摘要： An apparatus for continuous casting a metal strip and reducing snake eggs in the metal strip. A pair of counter rotating casting rolls through which a thin strip can be cast are provided. A metal delivery system is disposed above the nip for discharging molten metal into a casting pool supported on the rolls. A pair of side dam holders and a pair of side dams are assembled adjacent each end portion of the rolls. Each side dam holder is tapered and dovetails with an adjacent side dam to confine the casting pool of molten metal supported on casting surfaces of the rolls. An oscillation mechanism provides lateral oscillation to each side dam and side dam holder at a frequency 2-50 hertz and with an amplitude 100-2000 μm during casting.

2. 发明授权

US09889499B2 Continuous casting method 有权
公开(公告)号：US09889499B2
公开(公告)日：2018-02-13
申请号：US14914118
申请日：2013-08-26
申请人： NISSHIN STEEL CO., LTD.
发明人： Yuuki Honda , Hiroshi Morikawa
IPC分类号： B22D11/106 , B22D11/111 , B22D11/00 , B22D31/00 , B22D11/11 , B22D11/117 , B22D11/041 , B22D27/00
CPC分类号： B22D11/002 , B22D11/041 , B22D11/106 , B22D11/11 , B22D11/111 , B22D11/117 , B22D27/003 , B22D31/002
摘要： In a continuous casting apparatus 100 for casting a stainless steel billet 3c, a long nozzle 2 extending into a tundish 101 is provided at a ladle 1 for pouring a molten stainless steel 3 in the ladle 1 into the tundish 101. Further, a nitrogen gas 4 is supplied as a seal gas around the molten stainless steel 3 in the tundish 101, and continuous casting of the stainless steel billet 3c is performed, in which, while immersing the spout 2a of the long nozzle 2 into the molten stainless steel 3 in the tundish 101, the molten stainless steel 3 is poured through the long nozzle 2 into the tundish 101 and the molten stainless steel 3 in the tundish 101 is poured into a casting mold 105.

3. 发明申请

US20170199129A1 METHOD FOR ANALYZING NITROGEN IN METAL SAMPLE, APPARATUS FOR ANALYZING NITROGEN IN METAL SAMPLE, METHOD FOR ADJUSTING NITROGEN CONCENTRATION IN MOLTEN STEEL, AND METHOD FOR MANUFACTURING STEEL 审中-公开
公开(公告)号：US20170199129A1
公开(公告)日：2017-07-13
申请号：US15324176
申请日：2015-05-14
申请人： JFE STEEL CORPORATION
发明人： Satoshi Kinoshiro , Masao Inose
IPC分类号： G01N21/67 , G01N33/20 , B22D11/16 , B22D11/00 , C21C7/10 , B22D11/108 , C22C38/04 , C22C38/02 , C22C38/00 , G01N33/00 , B22D11/11
CPC分类号： G01N21/67 , B22D11/001 , B22D11/108 , B22D11/11 , B22D11/16 , C21C7/10 , C22C38/002 , C22C38/02 , C22C38/04 , G01N21/73 , G01N33/0036 , G01N33/2025 , G01N33/205
摘要： Provided are a method for analyzing nitrogen in a metal sample, an apparatus for analyzing nitrogen in a metal sample, a method for adjusting nitrogen concentration in molten steel, and a method for manufacturing steel. The method includes: a melting process in which a metal sample containing a nitrogen component is melted in an argon gas atmosphere by performing impulse heating to gasify the nitrogen component; and an analyzing process in which nitrogen content in the metal sample is determined by analyzing nitrogen gas generated in the melting process and the argon gas by using a gas discharge optical emission method. By analyzing the nitrogen concentration of a sample taken from molten steel by using the analysis method described above, and by determining treatment conditions for adjusting nitrogen concentration on the basis of the nitrogen analysis value derived by the analysis, nitrogen concentration in molten steel is adjusted.

4. 发明授权

US09649691B2 Method of producing rare earth alloy flakes 有权
公开(公告)号：US09649691B2
公开(公告)日：2017-05-16
申请号：US14373389
申请日：2013-01-23
申请人： CHUO DENKI KOGYO CO., LTD.
发明人： Hideo Sasaki
IPC分类号： B22F9/08 , B22D11/00 , B22D11/11 , B22D11/06 , B22F1/00
CPC分类号： B22F9/08 , B22D11/00 , B22D11/0611 , B22D11/11 , B22F1/0055 , B22F2301/45
摘要： When a ribbon is cast by heating raw materials to prepare a molten R-T-B-based alloy and supplying the molten alloy to a chill roll to solidify the molten alloy, the temperature of the molten alloy is adjusted in accordance with at least one of the arithmetic mean roughness Ra and the mean spacing of profile irregularities Sm of the surface of the chill roll, thereby controlling the spacing between adjacent R-rich phases in a crystal structure of resulting alloy flakes to a desired value. This makes it possible to inhibit variations in the crystal structure of the resulting alloy flakes that may occur due to wear of the chill roll. In adjusting the temperature of the molten alloy in accordance with at least one of the arithmetic mean roughness Ra and the mean spacing of profile irregularities Sm, it is preferred that the molten alloy temperature be adjusted using the equation: Δt=−7×(|ΔRa|×|ΔSm|)0.5/α where Δt is an amount of adjustment of the molten alloy temperature (° C.); ΔRa is an amount of change (μm) in the arithmetic mean roughness Ra; ΔSm is an amount of change (μm) in the mean spacing of profile irregularities Sm; and α is a correlation coefficient.

5. 发明授权

US09352386B2 Process and apparatus for controlling the flows of liquid metal in a crystallizer for the continuous casting of thin flat slabs 有权
公开(公告)号：US09352386B2
公开(公告)日：2016-05-31
申请号：US14845021
申请日：2015-09-03
申请人： DANIELI & C. OFFICINE MECCANICHE S.P.A.
发明人： Fabio Guastini , Andrea Codutti , Michele Minen , Fabio Vecchiet
IPC分类号： B22D11/11 , B22D11/115
CPC分类号： B22D11/11 , B22D11/115
摘要： The present invention relates to a process for controlling the distribution of liquid metal flows of in a crystallizer for the continuous casting of thin slabs. In particular, the process applies to a crystallizer comprising perimetral walls which define a containment volume for a liquid metal bath insertable through a discharger placed in the middle of the bath. The process includes arranging a plurality of electromagnetic brakes, each for generating a braking zone within said bath, and activating these electromagnetic brakes either independently or in groups according to characteristic parameters of the fluid-dynamic conditions of the liquid metal within the bath.

6. 发明申请

US20100132913A1 Casting Method and Casting System for Aluminium or Aluminium Alloys 审中-公开
标题翻译：铝或铝合金的铸造方法和铸造系统
公开(公告)号：US20100132913A1
公开(公告)日：2010-06-03
申请号：US12596067
申请日：2008-04-14
申请人： Pierre Gerber
发明人： Pierre Gerber
IPC分类号： B22D11/10 , B22D11/12 , B22D11/11
CPC分类号： B22D11/003 , B22D11/103 , B22D11/14 , B22D41/13
摘要： In a casting method, or a casting system for aluminum, or aluminum alloys, aluminum melt is filled into a plurality of pans (15, 15′). Said pans (15, 15′) are used for treatment, if needed, and delivered to a casting station (20), in which they are subsequently emptied, and the melt is casted into semi-finished products. At least two filled pans (15, 15′) are provided in order to ensure a continuous casting operation in the casting station (20), the melt of at least one of which is drained into a mutual inflow channel (27).
摘要翻译：在铸造方法中，或用于铝或铝合金的铸造系统中，将铝熔体填充到多个锅（15,15'）中。如果需要，所述平底锅（15,15'）用于处理，并被输送到铸造站（20），随后将其排空，并将熔体浇铸成半成品。提供至少两个填充盘（15,15'），以便确保在铸造站（20）中的连续铸造操作，其中至少一个的熔体被排放到相互入流通道（27）中。

7. 发明申请

US20090211400A1 Grain Refiners for Steel-Manufacturing Methods and Use 有权
标题翻译：钢铁制造方法和使用的粮食精炼厂
公开(公告)号：US20090211400A1
公开(公告)日：2009-08-27
申请号：US12227826
申请日：2007-05-31
申请人： Oystein Grong , Casper Van Der Eijk , Gabriella Maria Tranell , Leiv Olav Kolbeinsen
发明人： Oystein Grong , Casper Van Der Eijk , Gabriella Maria Tranell , Leiv Olav Kolbeinsen
IPC分类号： C21C7/00 , B22D11/11 , C22C14/00 , C22C16/00 , C22C21/00 , C22C22/00 , C22C23/00 , C22C24/00 , C22C27/02 , C22C27/04 , C22C27/06 , C22C28/00
CPC分类号： B22D1/00 , B22D11/108 , B22D11/11 , B22D11/111 , B22D11/116 , C21C7/0006 , C21C7/0037 , C21C7/0056 , C21C7/0075
摘要： The present invention concerns a new type of grain refiners for steel, in the form of a particulate composite material, containing a high volume fraction of tailor-made dispersed particles, with the purpose of acting as potent heterogeneous nucleation sites for iron crystals during solidification and subsequent thermo-mechanical treatment of the steel. The material comprises a composition of particles of XaSb or XaOb and the element(s) X, where X is one or more elements selected from the group Ce, La, Pr, Nd, Y, Ti, Al, Zr, Ca, Ba, Sr, Mg, Si, Mn, Cr, V, B, Nb, Mo and Fe, and S is sulphur, (O is oxygen), wherein said material additionally contains oxygen, sulphur, carbon and nitrogen, wherein the sulphur (or oxygen) content is between 2 and 30% by weight of said material, while the total content of oxygen (or sulphur), carbon and nitrogen and said other elements selected from the group X is between 98 and 70% by weight of said material, and the said material contains a high volume fraction of finely dispersed XaSb or XaOb particles embedded in a metallic matrix X. The invention further concerns methods for production and use of the composite material.
摘要翻译：本发明涉及一种新型的用于钢的晶粒细化剂，其为颗粒状复合材料形式，其含有大量的定制分散颗粒，其目的是作为固化期间铁晶体的有效非均相成核位点，以及随后对钢的热机械处理。该材料包括XaSb或XaOb的颗粒组合物和X元素，其中X是选自Ce，La，Pr，Nd，Y，Ti，Al，Zr，Ca，Ba， Sr，Mg，Si，Mn，Cr，V，B，Nb，Mo和Fe，S为硫，（O为氧），其中所述材料另外含有氧，硫，碳和氮，）含量在所述材料的2至30重量％之间，而氧（或硫），碳和氮以及选自X组的所有其它元素的总含量为所述材料的98至70重量％，以及所述材料含有高体积分数的嵌入金属基体X中的精细分散的XaSb或XaOb颗粒。本发明还涉及复合材料的生产和使用方法。

8. 发明申请

US20080216985A1 Method for Producing Grain Oriented Magnetic Steel Strip 有权
标题翻译：生产面向磁性钢带的方法
公开(公告)号：US20080216985A1
公开(公告)日：2008-09-11
申请号：US11997670
申请日：2006-07-20
申请人： Klaus Gunther , Ludger Lahn , Andreas Ploch , Eberhard Sowka
发明人： Klaus Gunther , Ludger Lahn , Andreas Ploch , Eberhard Sowka
IPC分类号： B22D11/113 , B22D11/11
CPC分类号： C22C38/02 , C21D8/1222 , C21D8/1244 , C21D8/1261
摘要： A method for producing high-quality grain oriented magnetic steel sheet utilizes a steel alloy with (in wt %) Si: 2.5-4.0%, C: 0.02-0.10%, Al: 0.01-0.065%, N: 0.003-0.015%. The method utilizes an operational sequence whose individual steps (secondary metallurgical treatment of the molten metal, continuous casting of the molten metal into a strand, dividing of the strand into thin slabs, heating of the thin slabs, continuous hot rolling of the thin slabs into hot strip, cooling of the hot strip, coiling of the hot strip, cold rolling of the hot strip into cold strip, recrystallization and decarburization annealing of the cold strip, application of an annealing separator, final annealing of the recrystallization and decarburization annealed cold strip to form a Goss texture) are harmonized with one another, so that a magnetic steel sheet with optimized electromagnetic properties is obtained using conventional apparatus.
摘要翻译：制造高品质晶粒取向电磁钢板的方法采用（重量％）Si：2.5-4.0％，C：0.02-0.10％，Al：0.01-0.065％，N：0.003-0.015％的钢合金。该方法采用各自的步骤（熔融金属的二次冶金处理，熔融金属连续铸造成股线，将钢绞线分成薄板坯，薄板坯加热，薄板坯的连续热轧成为热轧钢带，热轧带钢的冷却，热轧钢卷的卷取，热轧带钢冷轧成冷轧带，冷轧条的再结晶和脱碳退火，应用退火分离机，再结晶和脱碳退火冷带的最终退火以形成高斯纹理）彼此协调，从而使用常规装置获得具有优化的电磁特性的电磁钢板。

9. 发明申请

US20050262968A1 Method for manufacturing low-oxygen copper 有权
标题翻译：低氧铜制造方法
公开(公告)号：US20050262968A1
公开(公告)日：2005-12-01
申请号：US11194568
申请日：2005-08-02
申请人： Haruhiko Asao , Yutaka Koshiba , Keiji Nogami , Tutomu Masui , Kazumasa Hori , Kenji Wakiguchi , Masahiko Wada , Yoshiaki Hattori
发明人： Haruhiko Asao , Yutaka Koshiba , Keiji Nogami , Tutomu Masui , Kazumasa Hori , Kenji Wakiguchi , Masahiko Wada , Yoshiaki Hattori
IPC分类号： B22D7/00 , B22D11/00 , B22D11/06 , B22D11/10 , B22D11/11 , B22D11/113 , C22B9/00 , C22B9/05 , C22B15/00 , C22B15/14
CPC分类号： B22D11/005 , B22D11/00 , B22D11/0602 , B22D11/11 , B22D11/113 , C22B9/006 , C22B9/05 , C22B15/006 , Y10S29/005 , Y10T29/49988 , Y10T29/49989 , Y10T29/49991
摘要： A method for manufacturing a low-oxygen copper wire is provided, in which a dehydrogenating treatment can be performed without requiring a long moving distance of molten copper, and the generation of holes in solidification is suppressed, whereby high quality low-oxygen copper wire can be obtained having superior surface quality. The method for continuously manufacturing ingots of low-oxygen copper from molten copper includes a step of performing combustion in a reducing atmosphere in a melting furnace so as to produce molten copper; a step of sealing the molten copper in a non-oxidizing atmosphere in a casting trough; a step of transferring the molten copper to a turn-dish by using the casting trough; a degassing step of passing the molten copper through a degasser provided in the casting trough so as to dehydrogenate the molten copper; a step of continuously feeding the molten copper to a continuous casting machine so as to continuously produce cast copper; and a step of cutting the cast copper into a predetermined length.
摘要翻译：提供一种制造低氧铜线的方法，其中可以进行脱氢处理而不需要长时间的熔融铜的移动距离，并且可以抑制凝固孔的产生，从而优质的低氧铜线可以获得具有优异的表面质量。从熔融铜连续生产低氧铜锭的方法包括在熔炉中在还原气氛中进行燃烧以产生熔融铜的步骤; 在铸造槽中的非氧化性气氛中密封熔融铜的工序; 通过使用铸造槽将熔融铜转移到转盘的步骤; 使熔融铜通过设置在铸造槽中的脱气器以使熔融铜脱氢的脱气步骤; 连续地将熔融铜进料到连续铸造机上以连续生产铸铜的步骤; 以及将铸铜切割成预定长度的步骤。

10. 发明申请

US20050145064A1 Method and apparatus for melting titanium using a combination of plasma torches and direct arc electrodes 有权
公开(公告)号：US20050145064A1
公开(公告)日：2005-07-07
申请号：US11058796
申请日：2005-02-16
申请人： Edward Jackson , David Warren
发明人： Edward Jackson , David Warren
IPC分类号： B22D11/11 , C22B9/22 , C22B34/12 , F27B3/04 , F27B3/06 , F27B3/08 , F27B3/18 , F27B3/19 , F27B3/20 , F27B14/04 , F27B14/06 , F27B14/08 , F27D3/00 , F27D3/06 , F27D3/10 , C22B4/02
CPC分类号： B22D11/001 , B22D11/041 , B22D11/11 , B22D11/116 , C22B9/226 , C22B34/1295 , F27B3/04 , F27B3/065 , F27B3/085 , F27B3/18 , F27B3/19 , F27B3/20 , F27B14/04 , F27B14/06 , F27B14/0806 , F27D3/0025 , F27D3/0033 , F27D3/06 , F27D3/10
摘要： A method and apparatus for optimizing melting of titanium for processing into ingots or end products. The apparatus provides a main hearth, a plurality of optional refining hearths, and a plurality of casting molds or direct molds whereby direct arc electrodes melt the titanium in the main hearth while plasma torches melt the titanium in the refining chambers and/or adjacent the molds. Each of the direct arc electrodes and plasma torches is extendable and retractable into the melting environment and moveable in a circular pivoting or side to side linear motion.

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