Processing

Please wait...

Settings

Settings

Goto Application

1. WO2022067962 - LOW-COST HIGH-PERFORMANCE Q370QE-HPS BRIDGE STEEL AND PRODUCTION METHOD

Publication Number WO/2022/067962
Publication Date 07.04.2022
International Application No. PCT/CN2020/126500
International Filing Date 04.11.2020
IPC
C22C 38/38 2006.1
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
18containing chromium
38with more than 1.5% by weight of manganese
C22C 33/04 2006.1
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
33Making ferrous alloys
04by melting
C21D 8/00 2006.1
CCHEMISTRY; METALLURGY
21METALLURGY OF IRON
DMODIFYING 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
8Modifying the physical properties by deformation combined with, or followed by, heat treatment
CPC
B21B 37/74
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
BROLLING OF METAL
37Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
74Temperature control, e.g. by cooling or heating the rolls or the product
C22C 38/02
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
02containing silicon
C22C 38/06
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
06containing aluminium
C22C 38/26
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
18containing chromium
26with niobium or tantalum
C22C 38/28
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
18containing chromium
28with titanium or zirconium
C22C 38/38
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
18containing chromium
38with more than 1.5% by weight of manganese
Applicants
  • 南京钢铁股份有限公司 NANJING IRON & STEEL CO., LTD. [CN]/[CN]
Inventors
  • 祝瑞荣 ZHU, Ruirong
  • 翟冬雨 ZHAI, Dongyu
  • 洪君 HONG, Jun
  • 丁叶 DING, Ye
  • 李翔 LI, Xiang
  • 高燕 GAO, Yan
  • 张媛钰 ZHANG, Yuanyu
Agents
  • 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 GENERAL PARTNERSHIP)
Priority Data
202011048079.729.09.2020CN
Publication Language Chinese (zh)
Filing Language Chinese (ZH)
Designated States
Title
(EN) LOW-COST HIGH-PERFORMANCE Q370QE-HPS BRIDGE STEEL AND PRODUCTION METHOD
(FR) ACIER À PONT Q370QE-HPS À HAUTE PERFORMANCE ET FAIBLE COÛT, ET PROCÉDÉ DE PRODUCTION
(ZH) 低成本高性能Q370qE-HPS桥梁钢及生产方法
Abstract
(EN) The present invention relates to the technical field of steel production. Disclosed is low-cost high-performance Q370qE-HPS bridge steel, comprising the following chemical components in mass percentage: C: 0.05%-0.08%, Si: 0.10%-0.40%, Mn: 1.61%-1.70%, P≤0.015%, S≤0.0030%, Nb: 0.030%-0.050%, Ti: 0.010%-0.018%, residual Ni≤0.05%, Cr: 0.20%-0.30%, residual Mo≤0.05%, residual Cu≤0.05%, residual B≤0.05%, N≤0.005%, Al: 0.020%-0.050%, and the balance of Fe and impurities. By using a TMCP rolling process, a bridge steel plate which has a low yield ratio and excellent welding performance and satisfies standard requirements is obtained, thereby improving market competitiveness of enterprises.
(FR) La présente invention concerne le domaine technique de la production d'acier. L'invention divulgue un acier à pont Q370qE-HPS à haute performance à faible coût, comprenant les composants chimiques suivants en pourcentage en masse : C : 0,05 % à 0,08 %, Si : 0,10 % à 0,40 %, Mn : 1,61 % à 1,70 %, P ≤ 0,015 %, S ≤ 0,0030 %, Nb : 0,030 % à 0,050 %, Ti : 0,010 %-0,018 %, Ni résiduel ≤ 0,05 %, Cr : 0,20 % à 0,30 %, Mo résiduel ≤ 0,05 %, Cu résiduel ≤ 0,05 %, B résiduel ≤ 0,05 %, N résiduel ≤ 0,005 %, Al : 0,020 % à 0,050 %, le reste étant du Fe et des impuretés. En utilisant un procédé de laminage de TMCP, une plaque d'acier à pont qui a un faible rapport de rendement et une excellente performance de soudage et satisfait aux exigences standard est obtenue, ce qui permet d'améliorer la compétitivité du marché des entreprises.
(ZH) 本发明公开了一种低成本高性能Q370qE-HPS桥梁钢,涉及钢铁生产技术领域,其化学成分及质量百分比如下:C:0.05%~0.08%,Si:0.10%~0.40%,Mn:1.61%~1.70%,P≤0.015%,S≤0.0030%,Nb:0.030%~0.050%,Ti:0.010%~0.018%,残余Ni≤0.05%,Cr:0.20%~0.30%,残余Mo≤0.05%,残余Cu≤0.05%,残余B≤0.05%,N≤0.005%,Al:0.020%~0.050%,余量为Fe和杂质。采用TMCP轧制工艺,得到屈强比低焊接性能优异的满足标准要求的桥梁钢板,提高了企业的市场竞争力。
Related patent documents
Latest bibliographic data on file with the International Bureau