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1. (WO2017171366) HIGH-STRENGTH COLD ROLLED STEEL SHEET WITH EXCELLENT YIELD STRENGTH AND DUCTILITY, COATED STEEL PLATE, AND METHOD FOR MANUFACTURING SAME
Latest bibliographic data on file with the International Bureau    Submit observation

Pub. No.:    WO/2017/171366    International Application No.:    PCT/KR2017/003351
Publication Date: 05.10.2017 International Filing Date: 28.03.2017
IPC:
C22C 38/00 (2006.01), C22C 38/02 (2006.01), C22C 38/04 (2006.01), C22C 38/06 (2006.01), C22C 38/12 (2006.01), C22C 38/14 (2006.01), C22C 38/60 (2006.01), C21D 8/02 (2006.01)
Applicants: POSCO [KR/KR]; (Goedong-dong) 6261, Donghaean-ro, Nam-gu Pohang-si, Gyeongsangbuk-do 37859 (KR)
Inventors: LEE, Kyoo-Young; (KR).
LEE, Won-Hwi; (KR).
LEE, Sea-Woong; (KR).
RYU, Joo-Hyun; (KR)
Agent: C&S PATENT AND LAW OFFICE; 7th Floor, Daelim Acrotel 13, Eonju-ro 30-gil Gangnam-gu, Seoul 06292 (KR)
Priority Data:
10-2016-0036872 28.03.2016 KR
Title (EN) HIGH-STRENGTH COLD ROLLED STEEL SHEET WITH EXCELLENT YIELD STRENGTH AND DUCTILITY, COATED STEEL PLATE, AND METHOD FOR MANUFACTURING SAME
(FR) TÔLE D'ACIER LAMINÉE À FROID À RÉSISTANCE ÉLEVÉE AYANT D'EXCELLENTES LIMITE D'ÉLASTICITÉ ET DUCTILITÉ, PLAQUE D'ACIER REVÊTUE ET SON PROCÉDÉ DE FABRICATION
(KO) 항복강도와 연성이 우수한 고강도 냉연강판, 도금강판 및 이들의 제조방법
Abstract: front page image
(EN)The present invention relates to a high-strength steel sheet for use in lightening materials for electronic products and materials for vehicles including automobiles, trains and ships and, more particularly, to a high strength cold rolled steel sheet, a coated steel plate, and a method for manufacturing the same, wherein yield strength and ductility are improved by controlling the internal oxidation depth and the amount of residual austenite after first annealing, and the high strength cold rolled steel sheet and the coated steel plate can be stably manufactured and provided without any dent defects during the manufacturing thereof.
(FR)La présente invention concerne une tôle d'acier à résistance élevée pour utilisation dans des matériaux d'allègement pour des produits et des matériaux électroniques pour des véhicules comprenant des automobiles, des trains et des navires et, plus particulièrement, une tôle d'acier laminée à froid à résistance élevée, une plaque d'acier revêtue, et leur procédé de fabrication, la limite d'élasticité et la ductilité étant améliorées par régulation de la profondeur d'oxydation interne et de la quantité d'austénite résiduelle après un premier recuit, et la tôle d'acier laminée à froid à résistance élevée et la plaque d'acier revêtue peuvent être fabriquées de façon stable et produites sans aucun défaut d'enfoncement pendant la fabrication de celles-ci.
(KO)본 발명은 전자제품용 소재와 자동차, 기차 및 배 등을 포함한 운송수단용 소재등의 경량화에 사용되는 고강도 강판에 관한 것으로서, 보다 상세하게는 내부산화 깊이 및 1차 소둔 후 잔류 오스테나이트 양을 제어함으로써 항복강도 및 연성이 향상되고, 생산시 덴트 결함의 발생 없이 안정적으로 생산 및 제공할 수 있는 고강도 냉연강판, 도금강판 및 이들의 제조방법에 관한 것이다.
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, JP, KE, KG, KH, KN, KP, 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 (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (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: Korean (KO)
Filing Language: Korean (KO)