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1. (WO2019001464) PRODUCTION TECHNOLOGY FOR ULTRA-FINE GRAIN WIDE-THICK PIPELINE STEEL PLATE
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Pub. No.: WO/2019/001464 International Application No.: PCT/CN2018/093096
Publication Date: 03.01.2019 International Filing Date: 27.06.2018
IPC:
C22C 38/58 (2006.01) ,C21D 8/02 (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
18
containing chromium
40
with nickel
58
with more than 1.5% by weight of manganese
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
8
Modifying the physical properties by deformation combined with, or followed by, heat treatment
02
during manufacturing of plates or strips
Applicants:
南京钢铁股份有限公司 NANJING IRON & STEEL CO., LTD. [CN/CN]; 中国江苏省南京市 六合区卸甲甸 XieJiaDian Liuhe District Nanjing, Jiangsu 210035, CN
Inventors:
黄一新 HUANG, YiXin; CN
祝瑞荣 ZHU, RuiRong; CN
姚永宽 YAO, YongKuan; CN
楚觉非 CHU, JueFei; CN
翟冬雨 ZHAI, DongYu; CN
Agent:
南京利丰知识产权代理事务所(特殊普通合伙) NANJING LI&FENG INTELLECTUAL PROPERTY AGENCY (SPECIAL CENERAL PARTNERSHIP); 中国江苏省南京市 秦淮区中华路50号江苏国际经贸大厦1801室 Room 1801 Jiangsu International Economic And Trade Building, No. 50, Zhonghua Road, Qinhuai District Nanjing, Jiangsu 210001, CN
Priority Data:
201710499699.427.06.2017CN
Title (EN) PRODUCTION TECHNOLOGY FOR ULTRA-FINE GRAIN WIDE-THICK PIPELINE STEEL PLATE
(FR) TECHNOLOGIE DE PRODUCTION DE PLAQUE D'ACIER DE PIPELINE DE GANDE ÉPAISSEUR À GRAIN ULTRA-FIN
(ZH) 一种超细晶粒宽厚管线钢板的生产工艺
Abstract:
(EN) An ultra-fine grain wide-thick pipeline steel plate and production technology therefor, the steel plate comprising the following components by weight percent: C: 0.040-0.070%; Si: 0.15-0.30%; Mn: 1.30-1.80%; P≤0.015%; S≤0.005%; Nb: 0.030-0.07%; Ti: 0.006-0.020%; Ca: 0.0005-0.0040%; Al: 0.015-0.050%; Ni: 0.10-0.30%; Cr: 0.10-0.30%; Mo: 0.08-0.18%; Cu: 0.1-0.20%; and the remainder being Fe and unavoidable impurities. Uniform-structure bainite and acicular ferrite are obtained by means of reasonable improvement on a blank heating technology, optimization of a rolling schedule and perfection of laminar cooling technology, which ensures the stabilization of the structure and performance, and meets the performance requirements of wide-thick high steel grade pipeline steel.
(FR) L'invention concerne une plaque d'acier de pipeline de gande épaisseur à grain ultra-fin et une technologie de production de celle-ci. La plaque d'acier comprend les constituants suivants en pourcentage en poids: C: 0,040 à 0,070%; Si: 0,15 à 0,30%; Mn: 1,30 à 1,80%; P ≤ 0,015%; S ≤ 0,005%; Nb: 0,030 à 0,07%; Ti: 0,006 à 0,020%; Ca: 0,0005 à 0,0040%; Al: 0,015 à 0,050%; Ni: 0,10 à 0,30%; Cr: 0,10 à 0,30%; Mo: 0,08 à 0,18%; Cu: 0,1 à 0,20%; et le reste étant constitué de Fe et d'impuretés inévitables. La bainite à structure uniforme et la ferrite aciculaire sont obtenues par amélioration raisonnable d'une technologie de chauffage d'ébauche, optimisation d'un processus de laminage et perfectionnement de la technologie de refroidissement laminaire, ce qui assure la stabilisation de la structure et des performances, et répond aux exigences de performance d'un acier fin de grande épaisseur pour pipeline.
(ZH) 一种超细晶粒宽厚管线钢板及其生产工艺,钢板的重百分比成份为:C:0.040~0.070%、Si:0.15~0.30%、Mn:1.30~1.80%、P≤0.015%、S≤0.005%、Nb:0.030~0.07%、Ti:0.006~0.020%、Ca:0.0005~0.0040%、Al:0.015~0.050%、Ni:0.10~0.30%、Cr:0.10~0.30%、Mo:0.08~0.18%、Cu:0.1~0.20%,余量为Fe和不可避免的杂质;通过改善坯料加热工艺,优选轧制规程,完善层流冷却工艺,得到组织均匀的贝氏体、针状铁素体,确保了组织与性能的稳定,满足了宽厚高钢级管线钢性能要求。
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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: Chinese (ZH)
Filing Language: Chinese (ZH)