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1. WO2022001904 - X90-GRADE HIGH-STRENGTH PIPELINE STEEL PLATE COIL HAVING THICKNESS OF ≥ 20 MM AND MANUFACTURING METHOD THEREFOR

Publication Number WO/2022/001904
Publication Date 06.01.2022
International Application No. PCT/CN2021/102569
International Filing Date 26.06.2021
IPC
C22C 38/58 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
40with nickel
58with more than 1.5% by weight of manganese
C22C 38/54 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
40with nickel
54with boron
C22C 38/50 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
40with nickel
50with titanium or zirconium
C22C 38/48 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
40with nickel
48with niobium or tantalum
C22C 38/46 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
40with nickel
46with vanadium
C22C 38/44 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
40with nickel
44with molybdenum or tungsten
CPC
C21D 11/005
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, e.g. BY DECARBURISATION OR TEMPERING
11Process control or regulation for heat treatments
005for cooling
C21D 2211/002
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, e.g. BY DECARBURISATION OR TEMPERING
2211Microstructure comprising significant phases
002Bainite
C21D 2211/005
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, e.g. BY DECARBURISATION OR TEMPERING
2211Microstructure comprising significant phases
005Ferrite
C21D 2211/008
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, e.g. BY DECARBURISATION OR TEMPERING
2211Microstructure comprising significant phases
008Martensite
C21D 8/0205
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, e.g. BY DECARBURISATION OR TEMPERING
8Modifying the physical properties by deformation combined with, or followed by, heat treatment
02during manufacturing of plates or strips
0205of ferrous alloys
C21D 8/0247
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, e.g. BY DECARBURISATION OR TEMPERING
8Modifying the physical properties by deformation combined with, or followed by, heat treatment
02during manufacturing of plates or strips
0247characterised by the heat treatment
Applicants
  • 武汉钢铁有限公司 WUHAN IRON AND STEEL COMPANY LIMITED [CN]/[CN]
Inventors
  • 邹航 ZOU, Hang
  • 李利巍 LI, Liwei
  • 徐进桥 XU, Jinqiao
  • 岳江波 YUE, Jiangbo
  • 徐锋 XU, Feng
  • 梅荣利 MEI, Rongli
  • 张鹏武 ZHANG, Pengwu
  • 袁金 YUAN, Jin
  • 李鹏程 LI, Pengcheng
  • 周正军 ZHOU, Zhengjun
Agents
  • 湖北武汉永嘉专利代理有限公司 HUBEI WUHAN YONGJIA PATENT AGENCY CO., LTD.
Priority Data
202010617441.130.06.2020CN
Publication Language Chinese (zh)
Filing Language Chinese (ZH)
Designated States
Title
(EN) X90-GRADE HIGH-STRENGTH PIPELINE STEEL PLATE COIL HAVING THICKNESS OF ≥ 20 MM AND MANUFACTURING METHOD THEREFOR
(FR) BOBINE DE PLAQUE D'ACIER À HAUTE RÉSISTANCE DE NUANCE X90 POUR CANALISATION, AYANT UNE ÉPAISSEUR ≥ 20 MM, ET SON PROCÉDÉ DE FABRICATION
(ZH) 一种厚度≥20mm的X90级高强度管线钢板卷及其制造方法
Abstract
(EN) Disclosed is an X90-grade high-strength pipeline steel plate coil having a thickness of ≥ 20 mm, comprising C, Si, Mn, P, S, Cu, Ni, Cr, Mo, Nb, V, Ti, N, Al, Ca and B, with the balance being Fe and inevitable inclusions, and with 0.163% to 0.19% of Pcm and 2.65% to 2.85% of Mn + Cr + 3Mo. Further disclosed is a method for manufacturing an X90-grade high-strength pipeline steel plate coil having a thickness of ≥ 20 mm, the process flow thereof involving: smelting, casting blank heating, controlled rolling and controlled cooling. The construction requirement of an oil and gas delivery pipeline ≥ 40 billion m3/a can be met, and -20ºCCVN ≥ 305 J, -15ºCDWTT ≥ 85%, and a uniform elongation Agt ≥ 5% are also met.
(FR) Est divulguée une bobine de plaque d'acier à haute résistance de nuance X90 pour canalisation ayant une épaisseur ≥ 20 mm, comprenant C, Si, Mn, P, S, Cu, Ni, Cr, Mo, Nb, V, Ti, N, Al, Ca et B, le reste étant Fe et des inclusions inévitables, avec 0,163 % à 0,19 % de Pcm et de 2,65 % à 2,85 % de Mn + Cr + 3 Mo. Est en outre divulgué un procédé de fabrication d'une bobine de plaque d'acier à haute résistance de nuance X90 pour canalisation ayant une épaisseur ≥ 20 mm, dont le déroulement opératoire implique : une fusion, un chauffage d'ébauche de coulée, un laminage contrôlé et un refroidissement contrôlé. L'exigence de construction d'une canalisation de distribution de pétrole et de gaz apte à transporter au moins 40 milliards de m3 par an peut être satisfaite, les propriétés suivantes étant également satisfaites : valeur d'essai CVN à -20 °C ≥ 305 J, valeur d'essai DWTT à -15 °C ≥ 85 % et allongement uniforme Agt ≥ 5 %.
(ZH) 本发明公开了厚度≥20mm的X90级高强度管线钢板卷,包括C、Si、Mn、P、S、Cu、Ni、Cr、Mo、Nb、V、Ti、N、Al、Ca、B,余量为Fe及不可避免的夹杂;Pcm:0.163%~0.19%,Mn+Cr+3Mo:2.65%~2.85%。一种厚度≥20mm的X90级高强度管线钢板卷的制造方法,工艺流程为:冶炼、铸坯加热、控制轧制和控制冷却。能够满足≥400亿m3/a油气输送管道建设需求,同时满足-20℃CVN≥305J,-15℃DWTT≥85%,均匀延伸率Agt≥5%。
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