公开(公告)号：EP3135785B1

公开(公告)日：2018-12-26

申请号：EP15783239.5

申请日：2015-04-22

申请人： Nippon Steel & Sumitomo Metal Corporation

发明人： HASHIMURA, Masayuki ,  YAMAMOTO, Junya ,  MIZUKAMI, Kazumi ,  YOSHIDA, Naotsugu ,  MIYAZAKI, Masafumi ,  MIYAMOTO, Kenichiro

IPC分类号： C22C38/60 ,  B22D11/00 ,  C21D9/02 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/22 ,  C22C38/24 ,  C22C38/28 ,  C22C38/32 ,  C22C38/34 ,  C22C38/42 ,  C22C38/46 ,  C22C38/50 ,  C22C38/54 ,  C22C38/08 ,  C22C38/26

CPC分类号： C21D9/02 ,  B22D11/001 ,  B22D11/115 ,  B22D11/124 ,  C21C7/04 ,  C21C7/06 ,  C21C7/10 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/34 ,  C22C38/42 ,  C22C38/46 ,  C22C38/50 ,  C22C38/54 ,  C22C38/60

摘要： A spring steel according to the present embodiment has a chemical composition consisting of, in mass%, C: 0.4 to 0.7%, Si: 1.1 to 3.0%, Mn: 0.3 to 1.5%, P: equal to or less than 0.03%, S: equal to or less than 0.05%, Al: 0.01 to 0.05%, rare earth metal: 0.0001 to 0.002%, N: equal to or less than 0.015%, O: equal to or less than 0.0030%, Ti: 0.02 to 0.1%, and as optional elements, Ca, Cr, Mo, W, V, Nb, Ni, Cu, and B, with the balance being Fe and impurities. In the spring steel, the number of oxide inclusions having an equivalent circular diameter of equal to or greater than 5 µm is equal to or less than 0.2/mm 2 , the oxide inclusions each being one of an Al-based oxide, a complex oxide containing REM, O and Al, and a complex oxysulfide containing REM, O, S, and Al. Further, a maximum value among equivalent circular diameters of the oxide inclusions is equal to or less than 40 µm.

公开(公告)号：EP3327151A1

公开(公告)日：2018-05-30

申请号：EP16306448.8

申请日：2016-11-04

申请人： Richemont International S.A.

发明人： POMMIER, Stéphane ,  DIOLOGENT, Frédéric

IPC分类号： C21C7/04

CPC分类号： C21D6/005 ,  C21C7/04 ,  C21C7/076 ,  C21C7/10 ,  C21D5/00 ,  C21D6/004 ,  C21D8/06 ,  C21D9/02 ,  C22C1/02 ,  C22C37/08 ,  C22C38/004 ,  C22C38/40 ,  C22C38/50 ,  C22C38/58 ,  G04B1/00 ,  G04B1/145 ,  G04B17/00 ,  G04B17/066 ,  G04B43/00 ,  G04B43/007 ,  Y02P10/242

摘要： Alliage antiferromagnétique constitué de :
• de 10,0% à 30,0% en poids de manganèse,
• de 4,0% à 10,0% en poids de chrome,
• de 5,0% à 15,0% en poids de nickel,
• de 0,1% à 2,0% en poids de titane,
• le reste étant du fer et des impuretés résiduelles, l'alliage étant exempt de béryllium.

公开(公告)号：EP2980235B1

公开(公告)日：2018-05-30

申请号：EP14772647.5

申请日：2014-03-25

申请人： Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)

发明人： TASHIRO, Kiichirou ,  KATO, Taku ,  SATO, Shinsuke ,  MIYAKE, Takashi ,  KAWANO, Haruya

IPC分类号： C22C38/00 ,  C22C38/14 ,  C22C38/58 ,  C21C7/04 ,  C21D8/02

CPC分类号： C22C38/58 ,  C21C7/04 ,  C21D8/0226 ,  C21D2211/004 ,  C22C38/14

摘要： A steel plate with excellent hydrogen-induced cracking resistance and toughness of the weld heat affected zone (HAZ toughness) and a steel pipe obtained using the steel plate are achieved. The steel plate is characterized to contain specified elements with the remainder consisting of iron and inevitable impurities, in which the ratio of Ca amount and S amount (Ca/S) is 2.0 or more, Ca amount, S amount, and O amount satisfy (Ca-1.25S)/O‰¤1.8, and, in a region from the surface to 5 mm depth in the plate thickness direction, Ca-based inclusions with 50 µm or more of the long diameter or long side are 2.0 pieces/mm 2 or less, and TiN with 300 nm or less of the long diameter or long side is 5×10 2 pieces/µm 2 or more.

公开(公告)号：EP3208359A4

公开(公告)日：2018-05-23

申请号：EP15851035

申请日：2015-10-05

申请人： KK KOBE SEIKO SHO KOBE STEEL LTD

发明人： IBANO AKIRA ,  OKAZAKI YOSHITOMI ,  NAKO HIDENORI ,  KAWANO HARUYA ,  KANEKO MASAHITO ,  TASHIRO KIICHIROU ,  DEURA TETSUSHI ,  SHIMAMOTO MASAKI ,  SUGITANI TAKASHI ,  OHTA HIROKI ,  SATO SHINSUKE

IPC分类号： C22C38/00 ,  C21C7/04 ,  C21D8/02 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/22 ,  C22C38/26 ,  C22C38/28 ,  C22C38/38

CPC分类号： C22C38/00 ,  C21C7/04 ,  C21D8/02 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/22 ,  C22C38/26 ,  C22C38/28 ,  C22C38/38

摘要： A thick steel plate for tanks which contains given components and satisfies the relationship (Ti content [Ti])×(N content [N])‰¥0.000085 and in which the nonmetallic particles having a size of 1 µm or larger in terms of equivalent circular diameter have a specific average composition and the Ti-containing nitrides satisfy specific average number densities.

公开(公告)号：EP2940155B1

公开(公告)日：2017-12-27

申请号：EP12890754.0

申请日：2012-12-28

申请人： Posco

发明人： SEO, Jeong Do ,  CHOI, Joo ,  SHIN, Yong Mog

IPC分类号： C21B13/00 ,  C21B11/00 ,  C21C1/04 ,  C21C7/064 ,  C21C7/076 ,  C21C5/52 ,  C21C7/04

CPC分类号： C21C7/076 ,  C21C5/5211 ,  C21C7/04 ,  Y02P10/216 ,  Y02P10/242

摘要： Provided are an apparatus and a method for treating molten iron, the method for treating impurities contained in molten iron, the method comprising producing molten iron by melting an iron source containing copper, charging the molten iron into a first container, preparing flux in a second container disposed under the first container, and spraying the molten iron prepared in the first container to the second container in the form of droplets and making the molten iron react with the flux to remove copper contained in the molten iron, thereby being capable of easily removing copper (Cu) contained in the molten iron and using a low-cost iron source.

公开(公告)号：EP3239333A1

公开(公告)日：2017-11-01

申请号：EP15873096.0

申请日：2015-12-22

申请人： Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)

发明人： TASHIRO, Kiichiro ,  KATO, Taku ,  KAWANO, Haruya ,  OKA, Yuichi ,  SATO, Shinsuke ,  KIMURA, Sei ,  MIYAKE, Takashi

IPC分类号： C22C38/14 ,  C22C38/58 ,  C21C7/04 ,  C21D8/02

CPC分类号： C22C38/14 ,  C21C7/04 ,  C21D1/18 ,  C21D8/02 ,  C21D8/0226 ,  C21D8/0263 ,  C21D8/105 ,  C21D9/08 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/16 ,  C22C38/58

摘要： A steel plate and a steel pipe having excellent hydrogen-induced cracking resistance and toughness are achieved. Further, the steel plate and steel pipe are achieved that can evaluate the hydrogen-induced cracking resistance based on the internal quality of a cast strip without performing a hydrogen-induced cracking test after rolling. The steel plate having the excellent hydrogen-induced cracking resistance and toughness satisfies the specified contents of C, Si, Mn, P, S, Al, Ca, N, and O, and further contains the specified content of one or more elements selected from the group consisting of REM and Zr, with the balance being iron and inevitable impurities. The steel plate is further characterized by that the ratio (Ca/S) of the Ca to the S is 2.0 or more; the Ca, the S, and the O satisfy the relationship of (Ca - 1.25S)/O ≤ 1.80; an Ar gas content in a steel is 0.50 µL/cm 3 or less; and a decrease in the amount of Ca obtained by subtracting a Ca concentration in a slab from a Ca concentration in a molten steel in a tundish is a threshold value Ca dropθ or less, the threshold value Ca dropθ being a maximum decrease in the amount of Ca that avoids the occurrence of hydrogen-induced cracking in the steel plate obtained by rolling the slab.

摘要翻译： 实现了具有优异的耐氢致开裂性和韧性的钢板和钢管。 此外，实现了能够在轧制后不进行氢致开裂试验的情况下基于铸造带材的内部品质评价氢致抗裂性的钢板和钢管。 具有优异的耐氢诱导裂纹性和韧性的钢板满足C，Si，Mn，P，S，Al，Ca，N和O的规定含量，并且还含有选自以下的一种或多种元素的特定含量： 由REM和Zr组成的组，余量为铁和不可避免的杂质。 所述钢板的特征还在于Ca与S的比率（Ca / S）为2.0或更高; Ca，S和O满足（Ca-1.25S）/O≤1.80的关系; 钢中的Ar气含量为0.50μL/ cm 3以下， 通过从中间包内的钢水中的Ca浓度减去板坯中的Ca浓度而得到的Ca量的减少量为阈值Cadropθ以下，该阈值Cadropθ是Ca量的最大减少量 避免了通过轧制板坯而获得的钢板中发生氢致开裂。

公开(公告)号：EP2208799A4

公开(公告)日：2016-05-11

申请号：EP08778316

申请日：2008-07-23

申请人： NIPPON STEEL & SUMITOMO METAL CORP

发明人： NUMATA MITSUHIRO ,  TAKEUCHI SHINGO ,  OMURA TOMOHIKO

IPC分类号： C21C7/064 ,  C21C7/00 ,  C21C7/04 ,  C21C7/06 ,  C21C7/10 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/14 ,  C22C38/58

CPC分类号： C21C7/06 ,  C21C7/0075 ,  C21C7/04 ,  C21C7/064 ,  C21C7/10 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06

摘要： The steel for steel pipes of the present invention is the one for steel pipes excellent in sour-resistance performance including C, Mn, Si, P, S, Ti, Al, Ca, N and O, and optionally including a predetermined amount of one or more of Cr, Ni, Cu, Mo, V, B and Nb, in which inclusions in the steel have Ca, Al, O and S as main components, the CaO content in the inclusions is 30 to 80%, the ratio of the N content in the steel (ppm) to the CaO content in the inclusions (%) is from 0.28 to 2.0, and the CaS content in the inclusions is 25% or less. In addition, the method of producing steel for steel pipes of the present invention is to produce steel for steel pipes in which Ca is added so that the ratio of the N content in the steel to the amount of Ca addition (kg/t) into the molten steel is from 200 to 857. According to the production method of the present invention, a slag composition, temperature-raising heating of molten steel, stirring treatment of molten steel and slag, and the Ca addition are optimized, whereby high-strength HIC resistant steel for steel pipes that exhibit excellent sour-resistance performance and cleanliness can be stably manufactured.

摘要翻译： 本发明的钢管用钢是耐酸性优异的钢管，包括C，Mn，Si，P，S，Ti，Al，Ca，N和O，并且可选地包括预定量的一种 以Cr，Ni，Cu，Mo，V，B，Nb为主成分，其中夹杂物的Ca，Al，O，S为主成分，夹杂物的CaO含量为30〜80％ 钢中的N含量（ppm）与夹杂物中的CaO含量（％）为0.28〜2.0，夹杂物中的CaS含量为25％以下。 另外，本发明的钢管用钢的制造方法，是将钢中的N含量与Ca添加量（kg / t）的比例加入到（kg / t）的钢管中， 钢水为200〜857。根据本发明的制造方法，优化炉渣组成，钢水升温加热，钢水和渣的搅拌处理以及Ca添加，优选高强度 可以稳定地制造具有优异的耐酸性能和清洁度的用于钢管的HIC耐钢。

公开(公告)号：EP2832885A1

公开(公告)日：2015-02-04

申请号：EP13769370.1

申请日：2013-03-25

申请人： Hitachi Metals, Ltd.

发明人： AYABE, Yousuke ,  NAKATSU, Hideshi ,  TAMURA, Yasushi ,  MISHIMA, Setsuo ,  INTOH, Yuuki

IPC分类号： C22C38/00 ,  C21C7/00 ,  C21C7/04 ,  C21C7/06 ,  C22C38/60

CPC分类号： C22C33/04 ,  B22D7/00 ,  C21C1/04 ,  C21C7/04 ,  C21C7/06 ,  C21C7/076 ,  C21C7/10 ,  C21D6/004 ,  C21D6/005 ,  C21D6/007 ,  C21D6/008 ,  C21D8/005 ,  C21D9/0068 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/004 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/20 ,  C22C38/22 ,  C22C38/30 ,  C22C38/42 ,  C22C38/44 ,  C22C38/52 ,  Y02P10/242

摘要： A method of producing a mold steel, the method including a first process of preparing a molten steel A that is obtained after vacuum refining and has a component composition including from 0.005% to 0.1% by mass of C, from 1.0% to 5.0% by mass of Ni, from 3.0% to 8.0% by mass of Cr, more than 0% but less than or equal to 2.0% by mass of Mo, more than 0% but less than or equal to 3.5% by mass of Cu, and more than 0% but less than or equal to 2.0% by mass ofAl, in which an amount of O is 0.005% by mass or less and an amount of N is 0.03% by mass or less; a second process of reducing the amount of O and the amount of N in the molten steel A, by slag refining the molten steel A, to obtain a molten steel B; and a third process of casting the molten steel B, is provided.

摘要翻译： 由5.0％制备模具钢，所述方法包括：准备钢水一个DID真空精炼后获得，并且具有的成分组成包含0.005％至0.1％的C的质量的第一过程中，从1.0％至的一种方法 的Ni质量，从3.0％至的Cr 8.0质量％，超过0％但小于或等于由钼2.0质量％，超过0％但小于或铜的质量等于3.5％，并且 大于0％但小于或等于质量SFAL 2.0％在其中达到的O为0.005质量％或更小，在N量是0.03％至按质量计或更少; 减少O含量和氮在钢水中A中的量，通过炉渣精炼钢水A，以获得钢水B的第二工序; 和铸造钢水B的第三种方法中，被提供。

公开(公告)号：EP2258829A3

公开(公告)日：2013-03-27

申请号：EP10180852.5

申请日：2004-12-17

申请人： Novozymes A/S

发明人： Festersen, Rikke, M. ,  Viksoe-Nielsen, Anders ,  Joergensen, Christel Thea ,  Christensen, Lars Lehmann Hylling

IPC分类号： C12C5/00 ,  C12C7/16 ,  C12C7/04 ,  C12N9/42 ,  A23L1/09 ,  A23K1/16 ,  A23K1/165

CPC分类号： C21C7/04 ,  A23K20/163 ,  A23K20/189 ,  A23L29/35 ,  C12C5/004 ,  C12C7/04 ,  C12C7/16 ,  C12N9/2437 ,  C12N9/248 ,  C12Y302/01004 ,  C12Y302/01008

摘要： The present invention relates to a mashing and filtration step in a brewing process and to a composition useful in the mashing and filtration step of a brewing process.

公开(公告)号：EP1707644B1

公开(公告)日：2012-02-15

申请号：EP04807278.9

申请日：2004-12-17

申请人： KABUSHIKI KAISHA KOBE SEIKO SHO

发明人： SAKAMOTO, K, Kobe Corp. Res. Lab. K.K.K. Seiko Sho ,  SUGIMURA, T, Kobe Corp. Res. Lab. K.K.K. Seiko Sho ,  YOSHIDA, A, Kobe Works K.K.K. Seiko Sho ,  FUKUZAKI, Y, Kobe Works K.K.K. Seiko Sho ,  SUDA, S, Kobe Works K.K.K. Seiko Sho

IPC分类号： C21C7/04 ,  C21C7/076 ,  C22C38/00 ,  C22C38/06 ,  C22C38/58 ,  C22C38/02 ,  C22C38/04 ,  C22C38/24 ,  C22C38/18 ,  C22C38/40 ,  C22C38/46

CPC分类号： C22C38/46 ,  C01B33/06 ,  C21C7/0006 ,  C21C7/04 ,  C21C7/076 ,  C21D8/065 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/18 ,  C22C38/24 ,  C22C38/40 ,  Y02P10/242

摘要： A high cleanness steel which is produced by adding, as a Li-containing material, a Li-Si alloy having a Li content of 20 to 40 % and/or Li2CO3 into a molten steel, specifically, at a step wherein a series of molten metal treatments of the adjustment of components, temperature adjustments and the slag smelting have been completed, and which has a total Li content of 0.020 to 20 ppm (on the mass basis) and contains oxide based inclusions having a longer diameter of 20 μm or more in an amount of 1.0 piece or less per 50 g of the steel, wherein the oxide based inclusions being present in the steel contain, in mass %, 15 to 55 % of CaO, 20 to 70 % of SiO2, 35 % or less of Al2O3, 20 % or less of MgO, and 5 to 20 % of Li2O; and a method for the high cleanness steel. The above high cleanness steel is further improved in cold workability or in fatigue characteristics.