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公开(公告)号:AU2013268908A1
公开(公告)日:2014-11-20
申请号:AU2013268908
申请日:2013-05-30
Applicant: JFE STEEL CORP
Inventor: MIYATA YUKIO , ISHIGURO YASUHIDE , ISHIKAWA KAZUTOSHI , NAKAHASHI TETSU
Abstract: Provided is a high-strength stainless steel seamless pipe for use as oil well piping that has a wall thickness surpassing 25.4 mm, that is rated at 110 ksi (758 MPa) or higher, that exhibits a vE
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公开(公告)号:CA2872342C
公开(公告)日:2018-07-17
申请号:CA2872342
申请日:2013-05-30
Applicant: JFE STEEL CORP
Inventor: MIYATA YUKIO , ISHIGURO YASUHIDE , ISHIKAWA KAZUTOSHI , NAKAHASHI TETSU
Abstract: Provided is a high-strength stainless steel tube for oil country tubular goods having a wall thickness of more than 25.4 mm and a high strength of a 110 ksi (758 MPa) grade yield stress or more with excellent toughness and excellent corrosion resistance. A steel material having a chemical composition containing, by mass%, C: 0.005% or more and 0.06% or less, Si: 0.05% or more and 0.5% or less, Mn: 0.2% or more and 1.8% or less, Cr: 15.5% or more and 18.0% or less, Ni: 1.5% or more and 5.0% or less, V: 0.02% or more and 0.2% or less, Al: 0.002% or more and 0.05% or less, N: 0.01% or more and 0.15% or less, 0: 0.006% or less, and further containing one or more of Mo: 1.0% or more and 3.5% or less, W: 3.0% or less and Cu: 3.5% or less, in which the relational expressions Cr+0.65Ni+0.60Mo+0.30W+0.55Cu-20C>=19.5 and Cr+Mo+0.50W+0.30Si-43.5C-0.4Mn-Ni-0.3Cu-9N>=11.5 are satisfied, is made into a seamless steel tube by performing heating and hot rolling. The hot rolling is performed under conditions such that the total rolling reduction in a temperature range of 1100°C to 900°C is 30% or more. After the hot rolling has been performed, cooling is performed at a cooling rate equal to or more than an air-cooling rate, and, further, quenching-tempering is performed. With this method, a high-strength and high-toughness seamless steel tube having a strength of 110 ksi (758 MPa) or more and a toughness of 40 J or more in terms of vE-10 despite having a thick wall and excellent corrosion resistance even in a high-temperature corrosion environment having a temperature of 230°C and containing CO2 and Cl- can be stably manufactured.
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公开(公告)号:IN2395KON2014A
公开(公告)日:2015-05-01
申请号:IN2395KON2014
申请日:2014-10-28
Applicant: JFE STEEL CORP
Inventor: MIYATA YUKIO , ISHIGURO YASUHIDE , ISHIKAWA KAZUTOSHI , NAKAHASHI TETSU
Abstract: Provided is a high-strength stainless steel seamless pipe for use as oil well piping that has a wall thickness surpassing 25.4 mm, that is rated at 110 ksi (758 MPa) or higher, that exhibits a vE-10 of 40J or higher, and that exhibits excellent corrosion resistance in a high-temperature corrosive environment. The steel seamless pipe is obtained by heating and hot rolling a steel material of which the composition includes, in terms of mass%, 0.005-0.06% of C, 0.05-0.5% of Si, 0.2-1.8% of Mn, 15.5-18.0% of Cr, 1.5-5.0% of Ni, 0.02-0.2% of V, 0.002-0.05% of Al, 0.01-0.15% of N, and 0.006% or less of O, and additionally includes 1.0-3.5% of Mo and/or 3.0% or less of W and/or 3.5% or less of Cu so as to satisfy [Cr + 0.65Ni + 0.60Mo + 0.30W + 0.55Cu - 20C ≧ 19.5] and [Cr + Mo + 0.50W + 0.30Si - 43.5C - 0.4Mn - Ni - 0.3Cu - 9N ≧ 11.5]. On this occasion, hot rolling is carried out so as to achieve a total rolling reduction rate of 30% or more in the temperature range of 1100-900° C. After completion of hot rolling, cooling is carried out at a cooling rate faster than that of air cooling, and a hardening-tempering treatment is performed.
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公开(公告)号:CA2872342A1
公开(公告)日:2013-12-05
申请号:CA2872342
申请日:2013-05-30
Applicant: JFE STEEL CORP
Inventor: MIYATA YUKIO , ISHIGURO YASUHIDE , ISHIKAWA KAZUTOSHI , NAKAHASHI TETSU
Abstract: Provided is a high-strength stainless steel seamless pipe for use as oil well piping that has a wall thickness surpassing 25.4 mm, that is rated at 110 ksi (758 MPa) or higher, that exhibits a vE-10 of 40J or higher, and that exhibits excellent corrosion resistance in a high-temperature corrosive environment. The steel seamless pipe is obtained by heating and hot rolling a steel material of which the composition includes, in terms of mass%, 0.005-0.06% of C, 0.05-0.5% of Si, 0.2-1.8% of Mn, 15.5-18.0% of Cr, 1.5-5.0% of Ni, 0.02-0.2% of V, 0.002-0.05% of Al, 0.01-0.15% of N, and 0.006% or less of O, and additionally includes 1.0-3.5% of Mo and/or 3.0% or less of W and/or 3.5% or less of Cu so as to satisfy [Cr + 0.65Ni + 0.60Mo + 0.30W + 0.55Cu - 20C ? 19.5] and [Cr + Mo + 0.50W + 0.30Si - 43.5C - 0.4Mn - Ni - 0.3Cu - 9N ? 11.5]. On this occasion, hot rolling is carried out so as to achieve a total rolling reduction rate of 30% or more in the temperature range of 1100-900° C. After completion of hot rolling, cooling is carried out at a cooling rate faster than that of air cooling, and a hardening-tempering treatment is performed.
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公开(公告)号:EP2905347A4
公开(公告)日:2016-03-16
申请号:EP13844288
申请日:2013-10-03
Applicant: JFE STEEL CORP
Inventor: KATSUMURA TATSURO , FUKUDA HIROYUKI , SUGANO KOJI , ISHIKAWA KAZUTOSHI , ISHIGURO YASUHIDE
CPC classification number: C22C38/54 , C21D1/00 , C21D1/18 , C21D1/60 , C21D6/001 , C21D6/004 , C21D6/005 , C21D6/008 , C21D8/105 , C21D9/08 , C21D9/085 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50
Abstract: In the conventional art, it is difficult to stably adjust the strength of a heavy wall steel pipe to a target strength of 95 to 140 ksi (= TS: 655 to 965 MPa) by one Q-T operation. Specifically, a method for manufacturing a heavy wall steel pipe includes a cooling step in which a steel pipe, with a wall thickness of 1/2 inch or more, that has been heated to the gamma range (i.e., austenite region) is dipped in water while supporting and rotating the steel pipe about the axis of pipe, an axial stream which is a water flow in the direction of axis of pipe is applied to the inside surface of the steel pipe under rotation in the water, and an impinging stream which is a water flow impinging on the outer surface of the pipe is applied to the outer surface of the steel pipe under rotation in the water. The rotation is performed at a circumferential velocity of pipe of 4 m/s or more, the application of the axial stream and the impinging stream is started within 1.1 s after the entire steel pipe is dipped, and continued until the temperature of the steel pipe is decreased to 150°C or lower, the pipe flow velocity of the axial stream is set at 7 m/s or more, and the discharge flow velocity of the impinging stream is set at 9 m/s or more.
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公开(公告)号:CA3139909A1
公开(公告)日:2020-11-19
申请号:CA3139909
申请日:2020-05-12
Applicant: JFE STEEL CORP
Inventor: ARATANI MASATOSHI , ISHIKAWA KAZUTOSHI , MATSUI RYOJI , KONDOU TOMONORI
Abstract: Provided is an electric-resistance-welded steel pipe for a hollow stabilizer, which makes it possible to suppress the generation of not only a ferrite decarburization layer but also a total decarburization layer even when heat treatment is performed in the atmosphere and to obtain a hollow stabilizer having excellent fatigue characteristics. The electric-resistance-welded steel pipe for a hollow stabilizer has a prescribed component composition, and the total decarburization depths on the inner surface and the outer surface thereof are 100 µm or less.
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公开(公告)号:ES2708275T3
公开(公告)日:2019-04-09
申请号:ES13796392
申请日:2013-05-30
Applicant: JFE STEEL CORP
Inventor: MIYATA YUKIO , ISHIGURO YASUHIDE , ISHIKAWA KAZUTOSHI , NAKAHASHI TETSU
Abstract: Procedimiento para fabricar un tubo sin soldadura de acero inoxidable de alta resistencia para productos tubulares de países petrolíferos con un grosor de pared de más de 25,4 mm, comprendiendo el procedimiento el calentamiento de un material de acero; laminado en caliente, incluyendo laminado con perforación del material de acero en un tubo de acero sin soldadura; y enfriado del tubo de acero sin soldadura a temperatura ambiente a una velocidad de enfriamiento igual o superior a la velocidad de enfriamiento por aire, presentando el material de acero una composición química que contiene, en % en masa, C: 0,005% o más y 0,06% o menos, Si: 0,05% o más y 0,5% o menos, Mn: 0,2% o más y 1,8% o menos, P: 0,03% o menos, S: 0,005% o menos, Cr: 15,5% o más y 18,0% o menos, Ni: 1,5% o más y 4,5% o menos, V: 0,02% o más y 0,2% o menos, Al: 0,002% o más y 0,05% o menos, N: 0,01% o más y 0,15% o menos, O: 0,006% o menos, y que consiste, además, en uno, dos o más seleccionados de entre Mo: 1,0% o más y 3,5 % o menos, W: 3,0% o menos y Cu: 3,5% o menos, opcionalmente, además, uno o más seleccionados de entre Nb: 0,2% o menos, Ti: 0,3% o menos, Zr: 0,2% o menos y B: 0,01% o menos, y Ca: 0,01% menos, y siendo el resto Fe e impurezas inevitables, en el que se cumplen las siguientes expresiones relacionales (1) y (2), el laminado en caliente, incluyendo laminado con perforación, se realiza bajo unas condiciones de manera que la reducción total de laminado en un rango de temperaturas de 1100 ºC a 900 ºC es de un 30% o más y, después de que el tubo de acero laminado se enfríe a temperatura ambiente, se realiza un temple-revenido o revenido: Cr + 0,65Ni + 0,60Mo + 0,30W + 0,55Cu - 20C >= 19,5 ... (1), Cr + Mo + 0,50W + 0,30Si-43,5C-0,4Mn-Ni-0,3Cu-9N >=11,5 ··· (2), donde Cr, Mo, W, Si, C, Mn, Ni, Cu y N: contenido (% en masa) de elementos químicos respectivamente representados por los símbolos atómicos correspondientes.
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公开(公告)号:AU2013268908B2
公开(公告)日:2016-01-28
申请号:AU2013268908
申请日:2013-05-30
Applicant: JFE STEEL CORP
Inventor: MIYATA YUKIO , ISHIGURO YASUHIDE , ISHIKAWA KAZUTOSHI , NAKAHASHI TETSU
Abstract: Provided is a high-strength stainless steel seamless pipe for use as oil well piping that has a wall thickness surpassing 25.4 mm, that is rated at 110 ksi (758 MPa) or higher, that exhibits a vE
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公开(公告)号:MX2015003780A
公开(公告)日:2015-07-14
申请号:MX2015003780
申请日:2013-10-03
Applicant: JFE STEEL CORP
Inventor: ISHIGURO YASUHIDE , SUGANO KOJI , KATSUMURA TATSURO , FUKUDA HIROYUKI , ISHIKAWA KAZUTOSHI
Abstract: En la técnica convencional, es difícil ajustar de forma estable la resistencia de un tubo de acero de pared gruesa a una resistencia objetivo de 95 a 140 ksi (= TS: 655 a 965 MPa) mediante una operación de Q-T. Específicamente, un método para la fabricación de un tubo de acero de pared gruesa incluye una etapa de enfriamiento en la cual un tubo de acero, con un espesor de pared de 1/2 pulgada o más, que se ha calentado al intervalo gamma (es decir, región austenítica) se sumerge en agua mientras se soporta y se hace girar el tubo de acero alrededor del eje de tubo, una corriente axial la cual es un flujo de agua en la dirección del eje de tubo se aplica a la superficie interior del tubo de acero bajo rotación en el agua, y una corriente de impacto la cual es un flujo de agua que choca sobre la superficie exterior del tubo se aplica a la superficie exterior del tubo de acero bajo rotación en el agua. La rotación se realiza a una velocidad circunferencial de tubo de 4 m/s o más, la aplicación de la corriente axial y la corriente de impacto se inicia dentro de 1.1 s después de que todo el tubo de acero se sumerge, y se continúa hasta que la temperatura del tubo de acero se reduce a 150 °C o inferior, la velocidad de flujo de tubo de la corriente axial se establece en 7 m/s o más, y la velocidad de flujo de descarga de la corriente de impacto se establece en 9 m/s o más.
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公开(公告)号:EP2857119A4
公开(公告)日:2015-12-16
申请号:EP12877718
申请日:2012-05-29
Applicant: JFE STEEL CORP
Inventor: KATSUMURA TATSURO , ITAKURA NORITSUGU , NAMBU SEIICHIRO , ISHIKAWA KAZUTOSHI
CPC classification number: B21D39/20 , B21C1/24 , B21C3/16 , B21D41/026 , G06F17/5018
Abstract: In Tube expanding manufacturing using only an internal tool, it conventionally takes a long time and is expensive to determine manufacturing conditions. Thus specifically, through a tube expanding processing simulation, a workpiece shape in a state where a tip of a workpiece 10 has advanced by 1.0 m or more after passing through a shoulder portion 3 of a tool 1 is evaluated. A hollow piece shape and a tool shape such that the external diameter is within ±1% of the target, the thickness is within ±7.5% of the target, and the internal gap between the hollow piece and the tool is 1.0 mm or less are obtained by repeated calculation, and thereby actual tube expanding manufacturing conditions are determined.
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