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1. (WO2019065115) OIL WELL PIPE MARTENSITIC STAINLESS SEAMLESS STEEL PIPE AND PRODUCTION METHOD FOR SAME
Latest bibliographic data on file with the International Bureau    Submit observation
Pub. No.: WO/2019/065115 International Application No.: PCT/JP2018/032685
Publication Date: 04.04.2019 International Filing Date: 04.09.2018
IPC:
C22C 38/00 (2006.01) ,C21D 9/08 (2006.01) ,C22C 38/52 (2006.01) ,C22C 38/54 (2006.01)
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C
ALLOYS
38
Ferrous alloys, e.g. steel alloys
C CHEMISTRY; METALLURGY
21
METALLURGY OF IRON
D
MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING, OR OTHER TREATMENTS
9
Heat treatment, e.g. annealing, hardening, quenching, tempering, adapted for particular articles; Furnaces therefor
08
for tubular bodies or pipes
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C
ALLOYS
38
Ferrous alloys, e.g. steel alloys
18
containing chromium
40
with nickel
52
with cobalt
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C
ALLOYS
38
Ferrous alloys, e.g. steel alloys
18
containing chromium
40
with nickel
54
with boron
Applicants:
ＪＦＥスチール株式会社 JFE STEEL CORPORATION [JP/JP]; 東京都千代田区内幸町二丁目２番３号 2-3, Uchisaiwai-cho 2-chome, Chiyoda-ku, Tokyo 1000011, JP
Inventors:
遠藤　まみ ENDO Mami; JP
加茂　祐一 KAMO Yuichi; JP
柚賀　正雄 YUGA Masao; JP
Agent:
熊坂　晃 KUMASAKA Akira; JP
尾崎　大介 OZAKI Daisuke; JP
磯村　哲朗 ISOMURA Tetsuo; JP
坂井　哲也 SAKAI Tetsuya; JP
森　和弘 MORI Kazuhiro; JP
Priority Data:
2017-19007529.09.2017JP
Title (EN) OIL WELL PIPE MARTENSITIC STAINLESS SEAMLESS STEEL PIPE AND PRODUCTION METHOD FOR SAME
(FR) TUYAU SANS SOUDURE EN ACIER INOXYDABLE À BASE DE MARTENSITE POUR TUBAGE DE PUITS DE PÉTROLE, ET PROCÉDÉ DE FABRICATION DE CELUI-CI
(JA) 油井管用マルテンサイト系ステンレス継目無鋼管およびその製造方法
Abstract:
(EN) The purpose of the present invention is to provide: an oil well pipe martensitic stainless seamless steel pipe that has a yield stress of at least 758 MPa (110 ksi) and excellent sulfide stress cracking resistance; and a production method for the oil well pipe martensitic stainless seamless steel pipe. An oil well pipe martensitic stainless seamless steel pipe that: has a composition that contains, by mass, at least 0.010% of C, no more than 0.5% of Si, 0.05%–0.24% of Mn, no more than 0.030% of P, no more than 0.005% of S, 4.6%–8.0% of Ni, 10.0%–14.0% of Cr, 1.0%–2.7% of Mo, no more than 0.1% of Al, 0.005%–0.2% of V, no more than 0.1% of N, 0.06%–0.25% of Ti, 0.01%–1.0% of Cu, and 0.01%–1.0% of Co and that satisfies a prescribed relational expression for C, Mn, Cr, Cu, Ni, Mo, W, Nb, N, and Ti, the remainder being Fe and unavoidable impurities; and has a yield stress of at least 758 MPa.
(FR) L'invention a pour objet de fournir un tuyau sans soudure en acier inoxydable à base de martensite pour tubage de puits de pétrole qui possède une résistance au formage supérieure ou égale à 758MPa（110ksi）, et une excellente résistance à la fissuration par corrosion sous l'effet d'un sulfure, et un procédé de fabrication de ce tuyau sans soudure. Le tuyau sans soudure en acier inoxydable à base de martensite pour tubage de puits de pétrole de l'invention possède une résistance au formage supérieure ou égale à 758MPa, et présente une composition qui comprend, en % en masse, C：0,010% ou plus, Si：0,5% ou moins, Mn：0,05 à 0,24%, P：0,030% ou moins, S：0,005% ou moins, Ni：4,6 à 8,0%, Cr：10,0 à 14,0%, Mo：1,0 à 2,7%, Al：0,1% ou moins, V：0,005 à 0,2%, N：0,1% ou moins, Ti：0,06 à 0,25%, Cu：0,01 à 1,0% et Co：0,01 à 1,0%, C, Mn, Cr, Cu, Ni, Mo, W, Nb, N et Ti satisfaisant une formule relationnelle prédéfinie, et le reste étant constitué de Fe et des impuretés inévitables.
(JA) 758MPa（110ksi）以上の降伏応力を有し、かつ、優れた耐硫化物応力腐食割れ性を有する油井管用マルテンサイト系ステンレス継目無鋼管およびその製造方法を提供することを目的とする。　質量%で、C：0.010%以上、Si：0.5%以下、Mn：0.05～0.24%、P：0.030%以下、S：0.005%以下、Ni：4.6～8.0%、Cr：10.0～14.0%、Mo：1.0～2.7%、Al：0.1%以下、V：0.005～0.2%、N：0.1%以下、Ti：0.06～0.25%、Cu：0.01～1.0%、Co：0.01～1.0%を含有し、かつC、Mn、Cr、Cu、Ni、Mo、W、Nb、N、Tiが所定の関係式を満足し、残部Feおよび不可避的不純物からなる組成を有し、758MPa以上の降伏応力を有する油井管用マルテンサイト系ステンレス継目無鋼管。
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)