公开(公告)号：EP2865779A4

公开(公告)日：2016-04-20

申请号：EP13856612

申请日：2013-11-13

申请人： NIPPON STEEL & SUMITOMO METAL CORP

发明人： MIZOGUCHI MASAKI ,  ICHIKAWA KAZUTOSHI ,  MITSUYASU KAZUAKI ,  SUGIYAMA HIROKAZU

IPC分类号： C22C38/00 ,  B21B1/088 ,  B21B3/00 ,  C21C7/04 ,  C21C7/06 ,  C21D8/00 ,  C22C38/14 ,  C22C38/58

CPC分类号： E04C2/30 ,  B21B1/088 ,  B21B3/00 ,  C21C7/04 ,  C21C7/064 ,  C21D1/60 ,  C21D6/001 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D8/00 ,  C21D8/005 ,  C21D8/0226 ,  C21D8/0247 ,  C21D2211/002 ,  C21D2211/004 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/58 ,  E04C2/08 ,  E04C3/04

摘要： There is provided an H-section steel in which a number density of oxide particles having an equivalent circle diameter of 0.005µm to 2.0 µm per unit area is 100 pieces/mm 2 to 5000 pieces/mm 2 , the oxide particles includes Ca, Al, and O as a composition, the amount of Ca is 5% or more, the amount of Al is 5% or more, and a total amount of Ca and Al is 50% or more by mass ratio excluding O in the oxide particles, a thickness of the flange is 100 mm to 150 mm, a bainite fraction in a metallographic structure of the flange is 80% or more at a strength evaluation position, and an average prior austenite grain size in the metallographic structure of the flange is 200 µm or less at a toughness evaluation position.

摘要翻译： 提供H型钢，其中每单位面积的当量圆直径为0.005μm至2.0μm的氧化物颗粒的数密度为100个/ mm 2至5000个/ mm 2，氧化物颗粒包括Ca，Al 和O作为组成，Ca的量为5％以上，Al的量为5％以上，Ca和Al的总量在氧化物粒子中除O之外的为50质量％以上， 凸缘的厚度为100mm至150mm，凸缘的金相结构中的贝氏体分数在强度评估位置为80％以上，凸缘的金相组织中的平均奥氏体晶粒尺寸平均为200μm 以下的韧性评价位置。

公开(公告)号：EP2816125B1

公开(公告)日：2015-11-25

申请号：EP12871396.3

申请日：2012-03-13

申请人： Angang Steel Company Limited

发明人： TANG, Fuping ,  LI, Zhen ,  WANG, Xiaofeng ,  FEI, Peng ,  MENG, Jinsong ,  ZHANG, Yue ,  MA, Yong ,  WANG, Wenzhong ,  ZHANG, Zhiwen ,  WANG, Xiaoshan ,  GUO, Meng ,  ZHAO, Zhigang ,  LIN, Yang ,  XIN, Guoqiang ,  YAO, Weizhi

IPC分类号： C21C7/04 ,  C21C7/064 ,  C21C5/28

CPC分类号： C21C7/064 ,  B22D11/001 ,  C21C1/025 ,  C21C5/35 ,  C21C5/36 ,  C21C7/0043 ,  C21C7/0068 ,  C21C7/0087 ,  C21C7/0645 ,  C21C7/072 ,  C21C7/10 ,  C21C2300/08

摘要： A method for preparing low-cost clean steel includes steps of: preliminarily desulfurizing iron melt: preliminarily desulfurizing in an iron melt channel during blast furnace tapping and during iron folding in an iron folding room, adding a desulfurizing ball into the iron melt during the blast furnace tapping or the iron folding; dephosphorizing and controlling sulfur: dephosphorizing and controlling sulfur during converter steelmaking, in such a manner that P ‰¤ 0.014% and S ‰¤ 0.004% during tapping; rapidly dephosphorizing by slag-forming: rapidly dephosphorizing by slag-forming during converter tapping, at a converter end point, controlling a C content at 0.02ˆ¼0.10%, adding a dephosphorizing ball through an alloy chute during the converter tapping, blowing argon and stirring at the same time; purifying steel melt during RH refining: adding a purifying ball at a late stage of the RH refining when a vacuum degree is at 66.7ˆ¼500Pa; and continuously casting with whole-process protection. According to the present invention, steel quality is effectively improved while cost is lowered. Compared with the conventional process, raw materials utilized in the method are cheap, the cost per ton of steel is reduced by5-10 Yuan.

公开(公告)号：EP2876171A1

公开(公告)日：2015-05-27

申请号：EP12878213.3

申请日：2012-10-15

申请人： Institute of Metal Research Chinese Academy of Sciences

发明人： LI, Dianzhong ,  FU, Paixian ,  LIU, Hongwei ,  Xia, Lijun ,  LI, Yiyi

IPC分类号： C21C7/00 ,  C21C7/06 ,  C21C7/064 ,  C21C7/072 ,  C21C7/10

CPC分类号： C21C7/064 ,  C21C7/0075 ,  C21C7/06 ,  C21C7/0645 ,  C21C7/076 ,  C21C7/10 ,  C22C38/22 ,  C22C38/40 ,  Y02P10/242

摘要： A method for controlling A-shaped segregation of steel ingot. The method includes: 1) controlling a content of phosphorus in liquid steel at less than or equal to 0.005 wt. % upon tapping from an electric furnace, preventing steel slag from entering a ladle, controlling content of harmful elements at less than or equal to 100 ppm; and adding between 3 and 15 kg of calcium oxide and less than or equal to 0.5 kg of aluminum to each ton of the liquid steel; 2) pre-deoxidizing the liquid metal using vacuum carbon deoxidation; 3) de-sulfurizing, controlling content of oxygen, and controlling the content of sulfur in the liquid steel at less than or equal to 0.005 wt. %; and 4) performing vacuum degasification, controlling the total oxygen content at less than or equal to 15 ppm; and casting the steel in the presence of inert gas or in vacuum.

摘要翻译： 一种用于控制钢锭的A形偏析方法。 该方法包括：1）在从上电炉出钢，在小于或等于进入浇包，控制有害元素含量防止钢渣以小于或等于0.005％（重量）控制钢液中磷的含量 为100ppm; 并加入千克氧化钙的3至15之间，且小于或等于0.5公斤的铝与每吨钢液; 2）预脱氧用真空碳脱氧液体金属; 3）脱硫化，控制氧含量，和在小于或等于0.005％（重量）硫控制在钢液中的内容; 和4）进行真空脱气，在小于或等于15ppm的控制总氧含量; 和铸造钢中的惰性气体的或真空存在下进行。

公开(公告)号：EP2297366A4

公开(公告)日：2014-07-23

申请号：EP09774289

申请日：2009-06-30

申请人： ESM GROUP INC

发明人： WAITLEVERTCH JOSEPH R ,  EPPS LARRY J ,  ROSS MICHAEL S

IPC分类号： C21C5/30 ,  C21C5/32 ,  C21C5/46 ,  C21C7/064 ,  F27D3/18

CPC分类号： C21C7/064 ,  C21C5/32 ,  C21C5/462 ,  F27D3/18

摘要： A dual outlet injector is disclosed for use in a dual lance or dual port desulfurization station, whereby reagent from a given injector vessel may be injected into two separate supply pipes respectively corresponding to the dual lances or dual ports. The dual outlet injector enables a desulfurization station to be configured comprising only one supply vessel for powdered magnesium reagent and only one supply vessel for a carrier reagent such as powdered lime.

摘要翻译： 公开了用于双喷枪或双口脱硫站的双出口喷射器，其中来自给定喷射器容器的试剂可以分别注入分别对应于双喷枪或双口的两个分开的供给管中。 双出口喷射器使得脱硫站能够构造成仅包含一个用于粉末状镁试剂的供应容器和仅一个用于载体试剂如粉石灰的供应容器。

公开(公告)号：EP2247761B1

公开(公告)日：2012-12-19

申请号：EP09713773.1

申请日：2009-02-27

申请人： CRS Holdings, Inc.

发明人： KRIEBLE, Robert, Wayne ,  MARTIN, William, Joseph ,  ZOGAS, Thomas, Constantine ,  WERT, David, Elmer ,  NOVOTNY, Paul, Michael

IPC分类号： C21C7/064 ,  C22C38/44 ,  C22C38/50

CPC分类号： C22C38/44 ,  C21C5/005 ,  C21C7/06 ,  C21C7/064 ,  C21C7/10 ,  C22C38/50

公开(公告)号：EP1561834B1

公开(公告)日：2011-04-20

申请号：EP04748203.9

申请日：2004-08-03

申请人： SUMITOMO METAL INDUSTRIES, LTD.

发明人： OMURA, Tomohiko, Sumitomo Metal Industries, Ltd. ,  MATSUMOTO, Satoshi, Sumitomo Metal Industries, Ltd

IPC分类号： C22C38/00 ,  C22C38/58 ,  C21C7/00

CPC分类号： C21C7/064 ,  C21C7/0087 ,  C21C7/06 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/42 ,  C22C38/44

摘要： A duplex stainless steel which has a chemical composition, in mass %, that C: 0.03 % or less, Si: 0.01 to 2 %, Mn: 0.1 to 2 %, P: 0.05 % or less, S: 0.001 % or less, Al: 0.003 to 0.05 %, Ni: 4 to 12 %, Cr: 18 to 32 %, Mo: 0.2 to 5 %, N (nitrogen): 0.05 to 0.4 %, O (oxygen): 0.01 % or less, Ca: 0.0005 to 0.005 %, Mg: 0.0001 to 0.005 %, Cu: 0 to 2 %, B: 0 to 0.01 %, W: 0 to 4 %, and the balance: Fe and impurities, characterized in that it contains oxide type inclusions having a total content of Ca and Mg of 20 to 40 mass % and having a longer diameter of 7 μm or more in an amount of 10 pieces or less per 1 mm2 of the cross section perpendicular to the working direction, or further in that it contains oxide type inclusions having a content of S of 15 mass % or more and having a longer diameter of 1 μm or more in an amount of 10 pieces or less per 0.1 mm2 of the cross section perpendicular to the working direction. In particular, it is desirable that contents of Cu, B and W are 0.2 to 2 %, 0.001 to 0.01 % and 0.1 to 4 %, respectively.

公开(公告)号：EP1857202A1

公开(公告)日：2007-11-21

申请号：EP05792855.8

申请日：2005-06-23

申请人： Techcom Import-Export Gmbh

发明人： SCHUMACHER, Ewald Antonovich ,  BELITCHENKO, Anatoliy Konstantinovich ,  SCHUMACHER, Edgar Ewaldovich ,  ZINKOVSKIY, Ivan Vasilievich ,  HOSCHELE, Alexander Ewaldovich ,  KHOLOPONIN, Victor Nikolaevich

IPC分类号： B22D1/00

CPC分类号： B22D1/00 ,  C21C7/0043 ,  C21C7/0075 ,  C21C7/064 ,  F27D3/15 ,  F27D3/18

摘要： The invention relates to ferrous metallurgy, more exactly to steelmaking. The method suggests the passing of steel flow poured from the smelting chamber into the bucket inside the canal and in the process of such a pass to deliver into the metal flow deoxidizing and desulfurizing agents as well as other modifying elements changing chemical composition of metal in the bucket. The delivery is carried out by the way of free sedimentation with the help of screw and gas injection. Inactive or inert gas is used in all examples. The delivery of elements is carried out at the input to the canal including in several sections along its perimeter. The delivery of elements is carried out in several sections throughout the height and along the perimeter of the canal. It was suggested to succeed the sections of element delivery and in the process of this succeeding to replace the bucket. The elements are given in flour and / or granules. Outfit of equipment for method realization except for smelting chamber, bucket and rated delivery system of elements also includes a mechanism that contains a canal the operating space of which is made of fireproof material, in particular graphite, at that during the process of steel pouring the mechanism is positioned between the outlet of smelting chamber and the bucket, upon that under mentioned positioning of mechanism the long axis of the canal and that of the outlet are coaxial. The mechanism possesses a drive of displacement or self-adjusting or can be immovably mounted. The mechanism contains a bearing construction and replaceable part with canal. The last is made of graphite. The canal has a tapered form at the entrance and the rest part is cylindrical, at that canting angle of the tapered surface from vertical line comprises maximum 30°. I11. 14.

摘要翻译： 本发明涉及钢铁冶金，更确切地说炼钢。 该方法：建议的钢水流的通过从熔炼腔倒入桶中的管内并在寻求一通到输送入金属流动脱氧和脱硫剂的方法以及其它修改元件改变所述金属的化学组成 桶。 交付是通过用螺丝和注气的帮助下自由沉降的方式进行。 非活性或惰性气体中的所有实施例中使用。 元件的输送在输入到管包括沿其周边几个部分被执行。 元件的递送在几个部分中实行的整个高度，并沿管的周界。 有人建议成功在此成功更换水桶处理元交付和章节。 该元件在面粉和/或颗粒给出。 元件的设备的方法实现除熔炼腔室中，桶的装，并在额定输送系统因而包括一个机构都包含一个管中的所有的操作空间，其由防火材料制成的，石墨尤其是，在钢浇注过程中做 机构被熔炼腔室的出口和所述桶之间定位，在所述管的长轴的，根据提及的定位机构，也做了出口是同轴的。 该机构具有位移或自调整的驱动或可以不可移动地安装。 该机制包含一个轴承结构，并与运河更换部件。 最后是由石墨制成的。 运河具有锥形形状的入口处，其余部分是圆柱形的，在没有从斜纵线的锥形表面的角度包含最多30°。 I11。 第14

公开(公告)号：EP1757706A3

公开(公告)日：2007-04-04

申请号：EP06124570.0

申请日：2000-05-12

申请人： NIPPON STEEL CORPORATION

发明人： Kunitake, Okitomo ,  Omura, Norio ,  Sakai, Wataru ,  Mukawa, Susumu ,  Imai, Tadashi

IPC分类号： C21C7/068 ,  C21C7/064 ,  C21C7/10

CPC分类号： C21C7/064 ,  C21C7/0075 ,  C21C7/068 ,  C21C7/10

摘要： The invention provides a method for refining molten steel by immersing
the lower opening end of a cylindrical immersion tube equipped with a lance into the molten steel contained in a ladle, controlling the pressure in the cylindrical immersion tube to a prescribed pressure range to suck up the molten steel, injecting an agitation gas from the bottom of the ladle towards the surface of the sucked-up molten steel, and dephosphorizing and refining the molten steel under a reduced pressure, characterized in that the method comprising the steps of;
controlling the pressure in the cylindrical immersion tube to the range of 100 to 500 Torr,
controlling the injection amount of the agitation gas to the range of 0.6 to 3.0 Nl/min.·t,
controlling free oxygen in the molten steel to 300 ppm or more,
blowing a dephosphorizing agent in powder form, together with a carrier gas, through the lance to the molten steel surface, and
dephosphorizing and refining the molten steel under a reduced pressure.

公开(公告)号：EP1699940A1

公开(公告)日：2006-09-13

申请号：EP04816601.1

申请日：2004-12-23

申请人： LAFARGE

发明人： SORRENTINO, François ,  GIMENEZ, Michel

IPC分类号： C21C7/064

CPC分类号： C21C7/0645 ,  C21C7/064

摘要： The invention relates to a steel desulphuration agent, characterized in that it comprises at least 10 % SiO2, at least 10 % C2S, at least 35 % of at least one calcium aluminate and, optionally, a calcium silicoaluminate, in relation to the overall weight of the components.

公开(公告)号：EP1688510A1

公开(公告)日：2006-08-09

申请号：EP04799585.7

申请日：2004-11-04

申请人： NIPPON STEEL CORPORATION

发明人： SASAI,K., Nippon Steel Corporation Techn Developm. ,  OHASHI,W., Nippon Steel Corporation Techn Developm

IPC分类号： C22C38/00 ,  C22C38/14 ,  C21D9/46 ,  C21C7/04 ,  C21C7/06

CPC分类号： C21C7/068 ,  C21C7/064 ,  C21D8/04 ,  C22C38/004 ,  C22C38/14

摘要： The present invention provides ultralow carbon thin gauge steel sheet and a method for producing the same where coalescence and growth of inclusions in the molten steel are prevented and the inclusions are finely dispersed in the steel sheet, whereby surface defects and cracks at the time of press forming are prevented, growth of recrystallized grains at the time of continuous annealing is promoted, and a high r value (r value≥2.0) and elongation (total elongation≥50%) are exhibited, that is, ultralow carbon thin gauge steel sheet excellent in surface conditions, formability, and workability comprising, by mass%, 0.0003%≤C≤0.003%, Si ≤0.01%, Mn ≤0.1%, P≤0.02%, S≤0.01%, 0.0005%≤N≤0.0025%, 0.01%≤acid soluble Ti≤0.07%, acid soluble Al ≤0.003%, and 0.002%≤La+Ce+Nd≤0.02% and the balance of iron and unavoidable impurities, said steel sheet characterized by containing at least cerium oxysulfite, lanthanum oxysulfite, and neodymium oxysulfite.

摘要翻译： 本发明提供了超低碳薄钢板，以及用于制造该其中聚结和夹杂物的生长在钢水防止和夹杂物微细分散在钢板中，一种方法，其中在压制时表面缺陷和裂纹 形成被阻止，在连续退火时的再结晶晶粒的生长被促进，高r值的（r值‰¥2.0）和伸长率（总伸长率‰¥50％）展出，就是没有，超低碳薄规格钢 片具有优异的表面状态，成型性，加工性和含有以质量％计，0.0003%‰¤C‰¤0.003％以下，Si‰¤0.01％以下，Mn‰¤0.1％，P‰¤0.02％，S‰¤0.01％ 0.0005%‰¤N‰¤0.0025％，0点01%‰¤acid可溶Ti‰¤0.07％酸可溶性Al‰¤0.003％和0.002%‰¤La+ CE +钕‰¤0.02％和余量为铁和 不可避免的杂质，所述钢片通过含有为特征的至少铈oxysulfite，镧oxysulfite和钕牛 ysulfite。