公开(公告)号：EP2194152B1

公开(公告)日：2018-12-12

申请号：EP08835001.2

申请日：2008-10-01

申请人： Nippon Steel & Sumitomo Metal Corporation

发明人： OTOME, Yohei ,  IGARASHI, Masaaki ,  AMAYA, Hisashi ,  OKADA, Hirokazu

IPC分类号： C22C38/00 ,  C22C38/58 ,  C22C38/44 ,  C22C38/42 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02

CPC分类号： C22C38/02 ,  C22C38/001 ,  C22C38/005 ,  C22C38/04 ,  C22C38/06 ,  C22C38/42 ,  C22C38/44 ,  Y10S148/909

摘要： [Object] To provide a high strength Cr-Ni alloy material excellent in hot workability and stress corrosion cracking resistance, and seamless pipe for oil well. [Solution] A high strength Cr-Ni alloy material which consists of, by mass percent, C: 0.05% or less, Si: 0.05 to 1.0%, Mn: 0.01% or more and less than 3.0%, P: 0.05% or less, S: 0.005% or less, Cu: 0.01 to 4%, Ni: 25% or more and less than 35%, Cr: 20 to 30%, Mo: 0.01% or more and less than 4.0%, N: 0.10 to 0.30%, Al: 0.03 to 0.30%, O (oxygen): 0.01% or less, and REM (rare earth metal): 0.01 to 0.20%, with the balance being Fe and impurities, and also satisfies the conditions in the following formula (1). N × P / REM ‰¤ 0.40 where P, N, and REM in the formula (1) respectively denote the contents (mass%) of P, N, and REM. The high strength Cr-Ni alloy material may further contain one or more types of W, Ti, Nb, Zr, V, Ca, and Mg, instead of part of Fe.

公开(公告)号：EP2581464B1

公开(公告)日：2018-09-19

申请号：EP11792254.2

申请日：2011-05-19

申请人： Nippon Steel & Sumitomo Metal Corporation

发明人： NISHIYAMA, Yoshitaka ,  YOSHIZAWA, Mitsuru ,  SETO, Masahiro ,  TANAKA, Katsuki

IPC分类号： C22C38/00 ,  C21D7/06 ,  C22C38/58

CPC分类号： C21D6/004 ,  B21C37/06 ,  B21K21/00 ,  C21D7/06 ,  C21D8/105 ,  C21D9/0068 ,  C21D9/08 ,  C21D2211/001 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/42 ,  C22C38/44 ,  C22C38/48 ,  F16L9/02 ,  F22B37/10 ,  F28F21/083 ,  Y10S148/909 ,  Y10T29/479

摘要： There is provided an austenitic stainless steel pipe excellent in steam oxidation resistance. The austenitic stainless steel pipe excellent in steam oxidation resistance contains, by mass percent, 14 to 28% of Cr and 6 to 30% of Ni, and is configured so that a region satisfying the following Formula exists in a metal structure at a depth of 5 to 20 µm from the inner surface of the steel pipe: ± / ² × ´ / µ × 100 ‰¥ 0.3 where the meanings of symbols in the above Formula are as follows: ±: sum total of the number of pixels of digital image in region in which orientation difference of adjacent crystals detected by electron backscattering pattern is 5 to 50 degrees ²: the number of total pixels of digital image in region of measurement using electron backscattering pattern µ: analysis pitch width of electron backscattering pattern (µm) ´: grain boundary width (µm).

公开(公告)号：EP2765212A4

公开(公告)日：2015-01-21

申请号：EP12838653

申请日：2012-10-02

申请人： JFE STEEL CORP

发明人： MATSUDA HIROSHI ,  FUNAKAWA YOSHIMASA ,  OKUDA KANEHARU ,  SETO KAZUHIRO

IPC分类号： C22C38/06 ,  C21D8/02 ,  C21D9/46 ,  C22C38/02 ,  C22C38/04 ,  C22C38/60 ,  C23C2/02 ,  C23C2/40

CPC分类号： C21D8/0263 ,  C21D6/008 ,  C21D8/02 ,  C21D8/0226 ,  C21D8/0236 ,  C21D9/46 ,  C21D2211/001 ,  C21D2211/002 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/28 ,  C22C38/32 ,  C22C38/38 ,  C22C38/60 ,  C23C2/02 ,  C23C2/06 ,  C23C2/28 ,  C23C2/40 ,  Y10S148/909 ,  Y10T428/12799

公开(公告)号：EP1983065A4

公开(公告)日：2013-05-01

申请号：EP07708134

申请日：2007-02-07

申请人： NIPPON STEEL & SUMITOMO METAL CORP

发明人： TAKANO TAKASHI

IPC分类号： C21D9/08 ,  B60R21/26 ,  C21D8/10 ,  C22C38/00 ,  C22C38/58

CPC分类号： C22C38/02 ,  B60R2021/26082 ,  C22C38/002 ,  C22C38/04 ,  C22C38/42 ,  C22C38/44 ,  C22C38/48 ,  C22C38/50 ,  Y10S148/909

公开(公告)号：EP2581464A1

公开(公告)日：2013-04-17

申请号：EP11792254.2

申请日：2011-05-19

申请人： Nippon Steel & Sumitomo Metal Corporation

发明人： NISHIYAMA, Yoshitaka ,  YOSHIZAWA, Mitsuru ,  SETO, Masahiro ,  TANAKA, Katsuki

IPC分类号： C22C38/00 ,  C21D7/06 ,  C22C38/58

CPC分类号： C21D6/004 ,  B21C37/06 ,  B21K21/00 ,  C21D7/06 ,  C21D8/105 ,  C21D9/0068 ,  C21D9/08 ,  C21D2211/001 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/42 ,  C22C38/44 ,  C22C38/48 ,  F16L9/02 ,  F22B37/10 ,  F28F21/083 ,  Y10S148/909 ,  Y10T29/479

摘要： There is provided an austenitic stainless steel pipe excellent in steam oxidation resistance. The austenitic stainless steel pipe excellent in steam oxidation resistance contains, by mass percent, 14 to 28% of Cr and 6 to 30% of Ni, and is configured so that a region satisfying the following Formula exists in a metal structure at a depth of 5 to 20 µm from the inner surface of the steel pipe: α / β × δ / ε × 100 ≥ 0.3
where the meanings of symbols in the above Formula are as follows:
α: sum total of the number of pixels of digital image in region in which orientation difference of adjacent crystals detected by electron backscattering pattern is 5 to 50 degrees
β: the number of total pixels of digital image in region of measurement using electron backscattering pattern
ε: analysis pitch width of electron backscattering pattern (µm)
δ: grain boundary width (µm).

摘要翻译： 提供了一种耐蒸汽氧化性能优良的奥氏体不锈钢管。 耐蒸汽氧化性优良的奥氏体系不锈钢管以质量％计含有Cr：14〜28％，Ni：6〜30％，并且在金属组织中存在满足下式的区域 距钢管内表面5〜20μm：α/β×δ/ε×100≥0.3其中上式中符号的含义如下：α：数字图像的像素总数 通过电子背向散射图案检测的相邻晶体的方位差为5至50度的区域β：使用电子背散射图案的测量区域中的数字图像的总像素数量ε：电子背向散射图案的分析间距宽度（μm）δ： 晶界宽度（μm）。

公开(公告)号：EP2532765A1

公开(公告)日：2012-12-12

申请号：EP11739858.6

申请日：2011-02-04

申请人： Nippon Steel Corporation

发明人： FUJISHIRO, Taishi ,  HARA, Takuya ,  TERADA, Yoshio ,  SAKAMOTO, Shinya ,  ASAHI, Hitoshi

IPC分类号： C22C38/00 ,  B21C37/08 ,  B23K9/025 ,  B23K9/18 ,  B23K9/23 ,  B23K31/00 ,  C21D8/10 ,  C21D9/08 ,  C21D9/50 ,  C22C38/14 ,  C22C38/58 ,  B23K35/30

CPC分类号： B23K35/3053 ,  B23K31/027 ,  B23K2101/06 ,  B23K2103/04 ,  C21D8/105 ,  C21D9/08 ,  C21D9/50 ,  C21D2211/002 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/12 ,  C22C38/14 ,  Y10S148/909

摘要： A high-strength welded steel pipe is obtained by welding a seam weld portion of a steel plate that are formed in a pipe shape. In the high-strength welded steel pipe, a base metal of the steel plate includes, by mass%, C: 0.010% to 0.080%, Si: 0.01% to 0.50%, Mn: 0.50% to 2.00%, S: 0.0001% to 0.0050%, Ti: 0.003% to 0.030%, Mo: 0.05% to 1.00%, B: 0.0003% to 0.0100%, O: 0.0001% to 0.0080%, N: 0.006% to 0.0118%, P: limited to 0.050% or less, Al: limited to 0.008% or less, and the balance of Fe and inevitable impurities, Ceq is 0.30 to 0.53, Pcm is 0.10 to 0.20, [N] - [Ti] /3.4 is less than 0.003, the average grain size of the prior γ grains in heat affected zones in the steel plate is 250 µm or less, and the prior γ grains include bainite and intragranular bainite.

摘要翻译： 通过焊接形成为管状的钢板的焊缝部分来获得高强度焊接钢管。 在高强度焊接钢管中，钢板的贱金属以质量％计含有C：0.010〜0.080％，Si：0.01〜0.50％，Mn：0.50〜2.00％，S：0.0001％ 至0.0050％，Ti：0.003％至0.030％，Mo：0.05％至1.00％，B：0.0003％至0.0100％，O：0.0001％至0.0080％，N：0.006％至0.0118％，P：限于0.050％ 以下，Al：0.008％以下，余量为Fe和不可避免的杂质，Ceq为0.30〜0.53，Pcm为0.10〜0.20，[N] - [Ti] /3.4小于0.003，平均粒径 钢板热影响区域中先前3个晶粒的尺寸为250μm以下，而先前的3个晶粒包括贝氏体和晶粒内贝氏体。

公开(公告)号：EP2027300A2

公开(公告)日：2009-02-25

申请号：EP07788846.9

申请日：2007-06-07

申请人： V & M FRANCE

发明人： FOUQUET, Annnie ,  PETELOT, Catheline ,  PETELOT, Emilie ,  PETELOT, Adeline ,  LEPINGLE, Viviane ,  LOUIS, Ghislain

IPC分类号： C22C38/22

CPC分类号： C22C38/02 ,  C22C38/04 ,  C22C38/22 ,  C22C38/44 ,  Y10S148/909

摘要： The invention concerns steels having excellent resistance over time, in a corrosive atmosphere due to oxidizing environments such as, for example, fumes or water vapour, under high pressure and/or temperature. The invention concerns a steel composition for special applications, said composition containing, by weight, about 1.8 to 11% of chromium (and preferably between about 2.3 and 10% of chromium), less than 1% of silicon, and between 0.20 and 0.45% of manganese. It has been found that it is possible to adjust the contents of the composition based on a predetermined model, selected to obtain substantially optimal properties with respect to corrosion in specific conditions of high temperature performances. Said model can involve as additive of as residue at least one element selected among molybdenum, tungsten, cobalt, and nickel.

公开(公告)号：EP1255873B9

公开(公告)日：2007-10-10

申请号：EP01901158.4

申请日：2001-01-17

申请人： Vacuumschmelze GmbH & Co. KG

发明人： WEBER, Hartwin ,  DÖRING, Waldemar ,  HAUSCH, Gernot

IPC分类号： C22C38/50 ,  C22C38/52 ,  C22C38/44 ,  C21D6/02

CPC分类号： C21D6/004 ,  C21D8/0205 ,  C21D9/02 ,  C21D2211/008 ,  C22C38/002 ,  C22C38/44 ,  C22C38/50 ,  C22C38/52 ,  Y10S148/909

摘要： The invention relates to a high-strength, age-hardenable, corrosion-resistant maraging type spring steel, which is essentially comprised of 6.0 to 9.0 wt. % of Ni, 11.0 to 15.0 wt. % of Cr, 0.1 to 0.3 wt. % of Ti, 0.2 to 0.3 wt. % of Be and of a remainder consisting of Fe, whose martensite temperature M>S /= 130 DEG C and which has a ferrite content c>ferrite

公开(公告)号：EP1662015A4

公开(公告)日：2006-11-08

申请号：EP04771770

申请日：2004-08-11

申请人： JFE STEEL CORP

发明人： KIMURA MITSUO ,  TAMARI TAKANORI ,  YAMAZAKI YOSHIO ,  MOCHIZUKI RYOSUKE

IPC分类号： C21D8/10 ,  C22C38/00 ,  C21D1/25 ,  C21D6/00 ,  C21D9/08 ,  C22C38/44 ,  C22C38/46 ,  C22C38/58

CPC分类号： C22C38/42 ,  C21D1/25 ,  C21D6/004 ,  C21D9/08 ,  C22C38/02 ,  C22C38/04 ,  C22C38/44 ,  Y10S148/909

摘要： A stainless steel pipe for use in oil wells is proposed which has a high strength having a YS of 654 MPa or more and superior corrosion resistance even in a severe corrosive environment in which CO 2 and Cl - are present and the temperature is high, such as up to 230°C. As specific solution means, a pipe contains on a mass percent basis: 0.005% to 0.05% of C; 0.05% to 0.5% of Si; 0.2% to 1.8% of Mn; 0.03% or less of P; 0.005% or less of S; 15.5% to 18% of Cr; 1.5% to 5% of Ni; 1% to 3.5% of Mo; 0.02% to 0.2% of V; 0.01% to 0.15% of N; 0.006% or less of O; and the balance being Fe and unavoidable impurities, in which Cr+0.65Ni+0.6Mo+0.55Cu-20C‰¥19.5 and Cr+Mo+0.3Si-43.5C-0.4Mn-Ni-0.3Cu-9N‰¥11.5 are satisfied (where Cr, Ni, Mo, Cu, C, Si, Mn, and N represent the respective contents on a mass percent basis). In addition, quenching treatment and tempering treatment are preferably performed, so that the pipe preferably has a texture containing a martensite phase as a primary phase and 10 to 60 percent by volume of a ferrite phase, or further containing 30 percent by volume or less of an austenite phase. Furthermore, at least one of Al, Cu, Nb, Ti, Zr, W, B, and Ca may also be contained.

摘要翻译： 的不锈钢管，用于使用在油井中，提出了具有654兆帕以上的YS和优异的耐腐蚀性，即使在严酷的腐蚀环境，其中CO 2和Cl的高强度 - 存在且温度高时，搜索 至多230℃ 作为具体的解决手段，管包含一个质量％计：C：0.005％至0.05％; 0.05％的Si，0.5％; 0.2％的Mn，1.8％; 0：03％或更少的P; 0.005％或更少的S; 15.5％的Cr为18％; 1.5％的Ni 5％; 1％至沫的3.5％; 00：02％以上且0.2的V％; 12时01分至00：N个15 %%; 0.006％或更低的O; 和余量为Fe和不可避免的杂质中的Cr + 0.65Ni + 0.6Mo + 0.55Cu-20C‰¥19.5和Cr +沫+ 0.3Si-43.5C-0.4Mn-Ni类0.3Cu-9N‰¥11.5是 满足时（其中铬，镍，钼，铜，碳，硅，锰，和N代表以质量％计在respectivement内容）。 此外，淬火处理和回火处理中优选进行如此做了管优选地具有纹理由铁素体相的体积的含有马氏体相作为主相和10％至60％，或按体积或更小的还含有30％的 的奥氏体相。 ，Al中的至少一个，铜进一步，铌，钛，锆，W，B，和Ca因此可以含有。

公开(公告)号：EP1293580A4

公开(公告)日：2006-08-09

申请号：EP01938657

申请日：2001-06-14

申请人： JFE STEEL CORP

发明人： TOYOOKA TAKAAKI ,  KAWABATA YOSHIKAZU ,  YORIFUJI AKIRA ,  NISHIMORI MASANORI ,  ITADANI MOTOAKI ,  OKABE TAKATOSHI ,  ARATANI MASATOSHI ,  KOYAMA YASUE

IPC分类号： B21B17/14 ,  B21C37/06 ,  B21C37/08 ,  B21C37/16 ,  B21C37/30 ,  C21D8/10 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/58

CPC分类号： B21C37/30 ,  B21B17/14 ,  B21C37/06 ,  B21C37/08 ,  B21C37/16 ,  C21D8/10 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  Y10S148/909

摘要： A high carbon steel pipe excellent in cold formability and high frequency hardenability, characterized in that it has a chemical composition, in mass %: C: 0.3 to 0.8 %, Si: 2 % or less, Mn: 3 % or less, and balance: Fe and inevitable impurities, and a structure wherein cementite has a particle diameter of 1.0 ñm or less; and a method for producing the high carbon steel pipe which comprises subjecting a material steel pipe having the above composition to a heating or soaking treatment and then subjecting the treated material tube to a stretch reducing wherein a cumulative diameter reduction percentage is 30 % or more. The method can be employed for producing a high carbon electric welded steel pipe excellent in cold formability and high frequency hardenability.

摘要翻译： 本发明提供具有优异的冷加工性和高频淬透性，和生产钢管的方法的高碳钢管。 该方法包括加热步骤或浸泡具有含有C的组成的原料钢管：0.3〜0.8％以下，Si：不大于2％，Mn：不多于3％，然后进行的基础上减径轧制 钢管至少在温度范围（Ac1相变点-50℃）〜Ac 1相变点以在不低于30％的直径累积压下的。 一种结构，其中渗碳体的晶粒尺寸不大于1.0妈妈获得，在改进的冷加工性和淬透性的诱导从而导致。