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1. WO2020134675 - CORROSION-RESISTANT MARINE COMPOSITE STEEL PLATE AND MANUFACTURING METHOD THEREFOR

Publication Number WO/2020/134675
Publication Date 02.07.2020
International Application No. PCT/CN2019/118515
International Filing Date 14.11.2019
IPC
B32B 15/01 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
15Layered products essentially comprising metal
01all layers being exclusively metallic
CPC
B21B 1/38
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
BROLLING OF METAL
1Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section
38for rolling sheets of limited length, e.g. folded sheets, superimposed sheets, ; pack rolling
B32B 15/01
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
15Layered products comprising ; a layer of; metal
01all layers being exclusively metallic
B32B 15/011
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
15Layered products comprising ; a layer of; metal
01all layers being exclusively metallic
011all layers being formed of iron alloys or steels
C21D 1/02
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
1General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
02Hardening articles or materials formed by forging or rolling, with no further heating beyond that required for the formation
C21D 1/19
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
1General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
18Hardening
19by interrupted quenching
C21D 1/25
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
1General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
18Hardening
25Hardening, combined with annealing between 300 degrees Celsius and 600 degrees Celsius, i.e. heat refining ("Vergüten")
Applicants
  • 宝山钢铁股份有限公司 BAOSHAN IRON & STEEL CO., LTD. [CN]/[CN]
Inventors
  • 梁晓军 LIANG, Xiaojun
  • 焦四海 JIAO, Sihai
  • 丁建华 DING, Jianhua
  • 袁向前 YUAN, Xiangqian
  • 施青 SHI, Qing
  • 赖万晓 LAI, Wanxiao
  • 张所全 ZHANG, Suoquan
  • 王治宇 WANG, Zhiyu
  • 郝英敏 HAO, Yingmin
  • 陶孝勇 TAO, Xiaoyong
Agents
  • 上海华诚知识产权代理有限公司 WATSON & BAND INTELLECTUAL PROPERTY AGENT LTD.
Priority Data
201811602617.526.12.2018CN
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) CORROSION-RESISTANT MARINE COMPOSITE STEEL PLATE AND MANUFACTURING METHOD THEREFOR
(FR) PLAQUE D'ACIER COMPOSITE MARINE RÉSISTANTE À LA CORROSION ET PROCÉDÉ DE FABRICATION ASSOCIÉ
(ZH) 一种耐蚀船用复合钢板及其制造方法
Abstract
(EN)
Disclosed are a corrosion-resistant marine composite steel plate and a manufacturing method therefor. The corrosion-resistant composite steel plate has a two-layer structure, wherein one layer is made of duplex stainless steel and the other layer is made of carbon steel. The components in percentage by weight of the duplex stainless steel are: C ≤ 0.03%, Mn ≤ 2.00%, Si ≤ 1.00%, 21.0-23.0% of Cr, 4.5-6.5% of Ni, 2.5-3.5% of Mo, 0.08-0.20% of N, and the balance being Fe and inevitable impurities; and the components in percentage by weight of the carbon steel are: 0.03% ≤ C ≤ 0.13%, Si ≤ 0.50%, 0.90-1.60% of Mn, P ≤ 0.020%, S ≤ 0.025%, Cu ≤ 0.035%, Cr ≤ 0.20%, Ni ≤ 0.40%, 0.02-0.05% of Nb, Ti ≤ 0.02%, Mo ≤ 0.08%, Al ≥ 0.015%, and the balance being Fe and inevitable impurities. A rolled composite steel plate is produced by using a double-barrier vacuum blank assembly method, so that a reduction in structure weight is achieved while a good structural strength and an excellent corrosion resistance are obtained.
(FR)
La présente invention concerne une plaque d'acier composite marine résistante à la corrosion et un procédé de fabrication associé. La plaque d'acier composite résistante à la corrosion présente une structure bicouche, une couche étant réalisée en acier inoxydable duplex et l'autre couche étant réalisée en acier au carbone. Les composants en pourcentage en poids de l'acier inoxydable duplex sont : C ≤ 0,03 %, Mn ≤ 2,00 %, Si ≤ 1,00 %, 21,0 à 23,0 % de Cr, 4,5 à 6,5 % de Ni, 2,5 à 3,5 % de Mo, 0,08 à 0,20 % de N, et le reste étant du Fe et des impuretés inévitables ; et les composants en pourcentage en poids de l'acier au carbone sont : 0,03 % ≤ C ≤ 0,13 %, Si ≤ 0,50 %, 0,90 à 1,60 % de Mn, P ≤ 0,020 %, S ≤ 0,025 %, Cu ≤ 0,035 %, Cr ≤ 0,20 %, Ni ≤ 0,40 %, 0,02 à 0,05 % de Nb, Ti ≤ 0,02 %, Mo ≤ 0,08 %, Al ≥ 0,015 %, et le reste étant du Fe et des impuretés inévitables. Une plaque d'acier composite laminée est produite en utilisant un procédé d'assemblage d'ébauche sous vide à double barrière, de manière à obtenir une réduction du poids de la structure tout en obtenant une bonne résistance structurale et une excellente résistance à la corrosion.
(ZH)
一种耐蚀船用复合钢板及其制造方法,该耐蚀复合钢板为两层结构,其中,一层为双相不锈钢,一层为碳钢;双相不锈钢的成分重量百分比为:C≤0.03%,Mn≤2.00%,Si≤1.00%,Cr:21.0-23.0%,Ni:4.5-6.5%,Mo:2.5-3.5%,N:0.08-0.20%,余Fe及不可避免杂质;碳钢的成分重量百分比为:0.03%≤C≤0.13%,Si≤0.50%,Mn:0.90-1.60%,P≤0.020%,S≤0.025%,Cu≤0.035%,Cr≤0.20%,Ni≤0.40%,Nb:0.02~0.05%,Ti≤0.02%,Mo≤0.08%,Al≥0.015%,余Fe及不可避免杂质。采用双屏障真空组坯法进行轧制复合钢板的生产,在获得良好的结构强度与优异的耐蚀性能同时实现结构减重。
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