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1. 发明专利

DE60029917T2 未知
公开(公告)号：DE60029917T2
公开(公告)日：2006-12-07
申请号：DE60029917
申请日：2000-12-22
申请人： NIPPON WELDING ROD CO LTD , JFE STEEL CORP
发明人： MIYATA YUKIO , KIMURA MITSUO , TOYOOKA TAKAAKI , ISHII HIDEAKI , YASUDA KOICHI , SANGO TETSUYA , TAKATSU TAMAO , OHMAE TAKASHI
IPC分类号： B23K9/173 , B23K35/30 , B23K9/23 , C22C38/00 , C22C38/44

2. 发明专利

AT335567T 未知
公开(公告)号：AT335567T
公开(公告)日：2006-09-15
申请号：AT00128443
申请日：2000-12-22
申请人： JFE STEEL CORP , NIPPON WELDING ROD CO LTD
发明人： MIYATA YUKIO , KIMURA MITSUO , TOYOOKA TAKAAKI , ISHII HIDEAKI , YASUDA KOICHI , SANGO TETSUYA , TAKATSU TAMAO , OHMAE TAKASHI
IPC分类号： B23K9/173 , B23K9/23 , B23K35/30 , C22C38/00 , C22C38/44

3. 发明专利

DE60029917D1 未知
公开(公告)号：DE60029917D1
公开(公告)日：2006-09-21
申请号：DE60029917
申请日：2000-12-22
申请人： NIPPON WELDING ROD CO LTD , JFE STEEL CORP
发明人： MIYATA YUKIO , KIMURA MITSUO , TOYOOKA TAKAAKI , ISHII HIDEAKI , YASUDA KOICHI , SANGO TETSUYA , TAKATSU TAMAO , OHMAE TAKASHI
IPC分类号： B23K9/173 , B23K35/30 , B23K9/23 , C22C38/00 , C22C38/44

4. 发明公开

EP2728030A4 THICK-WALLED HIGH-STRENGTH SEAMLESS STEEL PIPE WITH EXCELLENT SOUR RESISTANCE FOR PIPE FOR PIPELINE, AND PROCESS FOR PRODUCING SAME 有权
标题翻译：厚壁，高强度和无缝钢管耐酸性为PIPE并处理其
公开(公告)号：EP2728030A4
公开(公告)日：2015-09-02
申请号：EP12805050
申请日：2012-06-29
申请人： JFE STEEL CORP
发明人： ISHIGURO YASUHIDE , KIMURA MITSUO , EGUCHI KENICHIRO , YOKOGAWA HIROSHI , KATAGIRI TADAO , TANAKA MASAHITO
IPC分类号： C22C38/00 , C21D1/18 , C21D3/04 , C21D9/08 , C22C38/14 , C22C38/58
CPC分类号： C21D9/085 , C21D1/25 , C21D1/63 , C21D8/105 , C21D2261/00 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/14 , C22C38/20 , C22C38/22 , C22C38/24 , C22C38/28 , C22C38/38 , C22C38/40 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/58 , F16L9/02
摘要： A heavy wall and high strength seamless steel pipe having high sour resistance is provided. In particular, a quenching and tempering treatment is conducted to adjust the yield strength to be higher than 450 MPa and adjust the wickers hardness HV5 that can be measured at an outermost side or an innermost side of the pipe under a 5 kgf load (test load: 49 N) to be 250 HV5 or less. In order to achieve this, surface layers are ground from surfaces by a depth of 0.3 mm or more in a wall thickness direction after the quenching treatment, or the quenching treatment is designed to include holding a heating temperature equal to or higher than the Ac3 transformation point for 120 seconds or more in an air atmosphere and then performing water-cooling in a nucleate boiling region or performing water-cooling in a film boiling region and then in a nucleate boiling region. As a result of this quenching treatment, the hardness of the surface layers decreases to 250 HV5 or less and a steel pipe that has an M-shape hardness distribution in which the maximum hardness appears at some point in the profile other than the center of the wall or a U-shape hardness distribution in which the hardness of the surface layers is the highest but not more than 250 HV5 or a flat shape hardness distribution can be obtained. As a result, the sour resistance is significantly improved.

5. 发明公开

EP1284167A4 METHOD FOR MANUFACTURING SEAMLESS STEEL PIPE 有权
标题翻译：工艺无缝钢管
公开(公告)号：EP1284167A4
公开(公告)日：2005-11-09
申请号：EP02705439
申请日：2002-03-22
申请人： JFE STEEL CORP
发明人： TOYOOKA TAKAAKI , MIYATA YUKIO , KIMURA MITSUO , ITOYAMA SEIJI , KISHIMOTO YASUO , NISHIKOORI MASANORI , TAWARA EIJI , OZAKI SEIJI
IPC分类号： B22D11/22 , B21B19/04 , B21B19/06 , B22D11/00 , B22D11/124 , B22D11/12
CPC分类号： B22D11/00 , B21B19/04 , B21B19/06 , B22D11/124
摘要： A method for manufacturing a seamless steel pipe which is excellent in properties of its inner surface and its wall. A round billet having a center segregation zone parting degree W (%) of 20 % or more, defined by the following formula, is used as its material. W (%) = ( DELTA w/D) x 100 (wherein W is the center segregation band parting degree (%), DELTA w is the center segregation zone parting width (mm) at the thickness center of the round billet, and D is the external diameter (mm) of the round billet). The round billet is pierced into a hollow blank pipe while maintaining the temperature at a predetermined temperature, and is then formed into a steel pipe of a predetermined size by elongating or by elongating and drawing the blank pipe. The continuously cast slab is preferably a slab cast by using a molten steel the overheat temperature of which is 25 to 65 DEG C, using secondary cooling water is such a way that the amount of secondary cooling water at the central portion of the slab width is greater than that at the peripheral portion in the slab width direction, and that the ratio of the secondary cooling water till the complete solidification is 1.2 to 2.0 l/kg-steel.

6. 发明公开

EP2172573A4 MARTENSITIC STAINLESS-STEEL SEAMLESS PIPE FOR OIL WELL PIPE AND PROCESS FOR PRODUCING THE SAME 有权
标题翻译：无缝管马氏体不锈钢用于生产石油钻探管和过程
公开(公告)号：EP2172573A4
公开(公告)日：2011-05-18
申请号：EP07829943
申请日：2007-10-10
申请人： JFE STEEL CORP
发明人： MIYATA YUKIO , KIMURA MITSUO , TANAKA MASAHITO , SHIMAMOTO KEN
IPC分类号： C22C38/00 , B21D3/00 , C21D9/08 , C22C38/02 , C22C38/58
CPC分类号： C21D9/14 , C21D1/22 , C21D6/004 , C21D8/105 , C21D9/08 , C21D2211/008 , C22C38/004 , C22C38/02 , C22C38/04 , C22C38/40 , C22C38/58

7. 发明公开

EP1514950A4 STAINLESS-STEEL PIPE FOR OIL WELL AND PROCESS FOR PRODUCING THE SAME 有权
标题翻译： ROHR AUS NICHTROSTENDEM STAHLFÜRÖLQUELLEUND HERSTELLUNGSVERFAHRENDAFÜR
公开(公告)号：EP1514950A4
公开(公告)日：2005-07-20
申请号：EP03733478
申请日：2003-06-18
申请人： JFE STEEL CORP
发明人： KIMURA MITSUO , TAMARI TAKANORI , TOYOOKA TAKAAKI
IPC分类号： B21C37/08 , C21D9/08 , C22C38/00 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50
CPC分类号： C21D6/004 , B21C37/08 , C21D9/14 , C21D2211/008 , C22C38/001 , C22C38/002 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50
摘要： A stainless-steel pipe with excellent corrosion resistance for oil wells, characterized by having a composition which comprises, in terms of wt.%, up to 0.05% carbon, up to 0.5% silicon, 0.20 to 1.80% manganese, up to 0.03% phosphorus, up to 0.005% sulfur, 14.0 to 18.0% chromium, 5.0 to 8.0% nickel, 1.5 to 3.5% molybdenum, 0.5 to 3.5% copper, up to 0.05% aluminum, up to 0.20% vanadium, 0.01 to 0.15% nitrogen, up to 0.006% oxygen, and iron and unavoidable impurities as the remainder, provided that Cr+0.65Ni+0.6Mo+0.55Cu-20C≥18.5 and Cr+Mo+0.3Si-43.5C-0.4Mn-Ni-0.3Cu-9N≤11 (wherein Cr, Ni, Mo, Cu, C, Si, Mn, and N mean the contents of the respective elements (wt.%)).
摘要翻译： 1，一种对油井具有优异耐腐蚀性的不锈钢管，其特征在于其组成按重量百分比计包含至多0.05％的碳，至多0.5％的硅，0.20至1.80％的锰，至多0.03％磷，高达0.005％的硫，14.0-18.0％的铬，5.0-8.0％的镍，1.5-3.5％的钼，0.5-3.5％的铜，至多0.05％的铝，至多0.20％的钒，0.01-0.15％的氮，如果Cr + 0.65Ni + 0.6Mo + 0.55Cu-20C≥18.5且Cr + Mo + 0.3Si-43.5C-0.4Mn-Ni-0.3Cu-20C≥18.5，则氧含量高达0.006％，余量为铁和不可避免的杂质。 9N≤11（其中Cr，Ni，Mo，Cu，C，Si，Mn和N是指各元素的含量（重量％））。

8. 发明专利

RU2599936C2 БЕСШОВНАЯ ТРУБА ИЗ ВЫСОКОПРОЧНОЙ НЕРЖАВЕЮЩЕЙ СТАЛИ С ВЫСОКОЙ КОРРОЗИОННОЙ СТОЙКОСТЬЮ ДЛЯ НЕФТЯНОЙ СКВАЖИНЫ И СПОСОБ ЕЁ ИЗГОТОВЛЕНИЯ 未知
公开(公告)号：RU2599936C2
公开(公告)日：2016-10-20
申请号：RU2015101733
申请日：2013-06-19
申请人： JFE STEEL CORP
发明人： EGUTI KENITIRO , ISIGURO YASUKHIDE , MIYATA YUKIO , KIMURA MITSUO
IPC分类号： C22C38/44 , C21D9/08
摘要： Изобретениеотноситсяк областиметаллургии, аименнок составамвысокопрочныхнержавеющихсталей, используемыхдляизготовлениябесшовныхтрубдлянефтяныхскважит. Стальсодержит, мас.%: С: 0,05 илименьше, Si: 0,5 илименьше, Mn: 0,15 илибольшеи 1,0 илименьше, Cr: 13,5 илибольшеи 15,4 илименьше, Ni: 3,5 илибольшеи 6,0 илименьше, Мо: 1,5 илибольшеи 5,0 илименьше, Cu: 3,5 илименьше, W: 2,5 илименьше, N: 0,15 илименьше, Fe инеизбежныепримесиостальное. Длякомпонентовсталивыполняетсяследующееусловие: -5,9×(7,82+27C-0,91Si+0,21Mn-0,9Cr+Ni-1,1Mo-0,55W+0,2Cu+11N)≥13,0. Стальобладаетвысокойстойкостьюк сульфидномукоррозионномурастрескиваниюподнапряжением. 2 н. и 18 з.п. ф-лы, 2 табл.

9. 发明专利

BR112012026595A2 tubo de aço contendo cr para tubo para condução excelente em resistência a rachaduras por corrosão sob tensão intergranular em zona termicamente afetada soldada 未知
公开(公告)号：BR112012026595A2
公开(公告)日：2016-07-12
申请号：BR112012026595
申请日：2011-04-15
申请人： JFE STEEL CORP
发明人： KIMURA MITSUO , MIYATA YUKIO
IPC分类号： C22C38/00 , C22C38/58
摘要： tubo de aço contendo cr para tubo para condução excelente em resistência a rachaduras por corrosão sob tensão intergranular em zona termicamente afetada soldada. a presente invenção refere-se a um tubo de aço contendo cr para tubo para condução com alta força de classe x-65 a x-80 e sendo excelente em tenacidade, resistência à corrosão e resistência a rachaduras por corrosão sob tensão de sulfeto, e também sendo excelente em resistência a rachaduras por corrosão sob tensão intergranular em uma zona termicamente afetada soldada. para ser mais específico, a composição do tubo de aço contendo cr, em % de masa; 0,001 a 0,015% de c; 0,05 a 0,50% de si; 0,10 a 2,0% de mn; 0,001 a 0,10% de al; 15,0 a 18,0% de cr; 2,0 a 6,0% de ni; 1,5 a 3,5% de mo; 0,001 a 0,20% de v e 0,015% ou menos de n, de modo a satisfazer a relação a seguir de cr + mo + 0,4w + 0,3si-43,5c - 0,4mn-ni-0,3cu - 9n: 11,5 a 13,3. uma zona termicamente afetada soldada que é aquecida a uma região de temperatura de fase única de ferrita de 1300ºc ou mais no momento da soldagem e é esfriada tem a microestrutura em que 50% ou mais dos limites de grãos de ferrita anteriores são ocupados por uma fase martensita e/ou uma fase austenita em uma razão para o comprimento total dos limites de grãos de ferrita anteriores. em conformidade, a formação de uma zona esgotada em carboneto de cr é suprimida, assim fornecendo um tubo de aço que acentuadamente melhora a resistência a rachaduras por corrosão sob tensão intergranular em uma zona termicamen te afetada soldada. devido a tal tubo de aço, é possível adquirir um efeito vantajoso em que se torna desnecessário realizar tratamento térmico pós-soldagem, assim encurtando de modo acentuado o período de construção da estrutura de tubo de aço soldada.

10. 发明专利

CA2536404C EXPANSIBLE SEAMLESS STEEL PIPE FOR USE IN OIL WELL AND METHOD FOR PRODUCTION THEREOF 未知
公开(公告)号：CA2536404C
公开(公告)日：2011-08-16
申请号：CA2536404
申请日：2004-10-18
申请人： JFE STEEL CORP
发明人： YAMAZAKI YOSHIO , MIYATA YUKIO , KIMURA MITSUO , SAKATA KEI , TANAKA MASAHITO
IPC分类号： C22C38/00 , C21D1/18 , C21D1/28 , C21D8/10 , C21D9/08
摘要： An expansible seamless steel pipe for use in oil well, which contains C: 0.010 % or more and less than 0.10 %, Si: 0.05 to 1 %, Mn: 0.5 to 4 %, P: 0.03 % or less, S: 0.015 % or less, Al: 0.01 to 0.06 %, N: 0.007 % or less, O: 0.005 % or less, Nb: 0.01 to 0.2 %, and contains one or more of Nb, Mo and Cr in the range that Nb: 0.01 to 0.2 %, Mo: 0.05 to 0.5 %, and Cr: 0.05 to 1.5 %, with the proviso that the formulae of Mn + 0.9×Cr + 2.6×Mo >= 2.0 and 4×C - 0.3×Si + Mn + 1.3×Cr + 1.5×Mo

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