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1. (WO2018227740) LOW YIELD STRENGTH RATIO, HIGH STRENGTH AND DUCTILITY THICK GAUGE STEEL PLATE AND MANUFACTURING METHOD THEREFOR
Latest bibliographic data on file with the International BureauSubmit observation

Pub. No.: WO/2018/227740 International Application No.: PCT/CN2017/096430
Publication Date: 20.12.2018 International Filing Date: 08.08.2017
IPC:
C22C 38/58 (2006.01) ,C22C 38/02 (2006.01) ,C22C 38/06 (2006.01) ,C22C 38/44 (2006.01) ,C22C 38/50 (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
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C
ALLOYS
38
Ferrous alloys, e.g. steel alloys
02
containing silicon
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
06
containing aluminium
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
44
with molybdenum or tungsten
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
50
with titanium or zirconium
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 Xie Jia Dian Liuhe District Nanjing, Jiangsu 210035, CN
Inventors:
孙超 SUN, Chao; CN
李强 LI, Qiang; CN
单以刚 SHAN, Yigang; CN
王从道 WANG, Chongdao; CN
党军 DANG, Jun; CN
Agent:
南京利丰知识产权代理事务所(特殊普通合伙) NANJING IRON & STEEL CO., LTD.; 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:
201710445091.313.06.2017CN
Title (EN) LOW YIELD STRENGTH RATIO, HIGH STRENGTH AND DUCTILITY THICK GAUGE STEEL PLATE AND MANUFACTURING METHOD THEREFOR
(FR) PLAQUE D'ACIER DE FORTE ÉPAISSEUR À BAS RAPPORT DE LIMITE D'ÉLASTICITÉ ET RÉSISTANCE ET DUCTILITÉ ÉLEVÉES, ET SON PROCÉDÉ DE FABRICATION
(ZH) 一种低屈强比高强韧厚规格钢板及其制造方法
Abstract:
(EN) A low yield strength ratio, high strength and ductility thick gauge steel plate, the content of the chemical components thereof in terms of percentage by mass being: C: 0.060-0.080%, Mn: 5.5-6.0%, Si: 0.10-0.30%, Al: 0.015-0.040%, Mo: 0.15-0.30%, Cr: 0.20-0.40%, Ni: 0.15-0.40%, Ti: 0.01-0.03%, S ≤ 0.006%, P ≤ 0.010%, the remainder being Fe and unavoidable impurity elements. The steel plate is provided with increased yield strength, reduced yield strength ratio, and great low-temperature impact toughness. A manufacturing method for the steel plate comprises: heating, rolling, and heat treatment. The method requires only one heat treatment and has a simple process.
(FR) Cette invention concerne une plaque d'acier de forte épaisseur à bas rapport de limite d'élasticité et résistance et ductilité élevées, la teneur en constituants chimiques de ladite plaque étant, en termes de pourcentage en masse, C : 0,060 à 0,080 %, Mn : 5,5 à 6,0 %, Si : 0,10 à 0,30 %, Al : 0,015-0,040 %, Mo : 0,15 à 0,30 %, Cr : 0,20 à 0,40 %, Ni : 0,15 à 0,40 %, Ti : 0,01 à 0,03 %, S ≤ 0,006 %, P ≤ 0,010 %, le reste étant du Fe et des éléments d'impuretés inévitables. La plaque d'acier est dotée d'une limite d'élasticité accrue, d'un rapport de limite d'élasticité réduit et d'une grande ténacité à l'impact à basse température. Un procédé de fabrication de la plaque d'acier comprend un chauffage, un laminage et un traitement thermique. Le procédé ne nécessite qu'un seul traitement thermique, et sa mise en œuvre est simple.
(ZH) 一种低屈强比高强韧厚规格钢板,其化学组分的质量百分比含量为:C:0.060-0.080%、Mn:5.5-6.0%、Si:0.10-0.30%、Al:0.015-0.040%、Mo:0.15-0.30%、Cr:0.20-0.40%、Ni:0.15-0.40%、Ti:0.01-0.03%、S≤0.006%、P≤0.010%,余量为Fe和不可避免的杂质元素;该钢板具有较高的屈服强度、较低的屈强比和良好的低温冲击韧性。钢板的制造方法包括:加热、轧制和热处理;该方法仅需要一次热处理,工艺简单。
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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 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: Chinese (ZH)
Filing Language: Chinese (ZH)