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1. WO2020111782 - STEEL SHEET HAVING CORROSION RESISTANCE IN LOW CONCENTRATION SULFURIC ACID/HYDROCHLORIC ACID COMPLEX CONDENSATION ATMOSPHERE AND MANUFACTURING METHOD THEREFOR

Publication Number WO/2020/111782
Publication Date 04.06.2020
International Application No. PCT/KR2019/016491
International Filing Date 27.11.2019
IPC
C22C 38/04 2006.01
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
04containing manganese
C22C 38/00 2006.01
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
C22C 38/60 2006.01
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
60containing lead, selenium, tellurium or antimony, or more than 0.04% by weight of sulfur
C22C 38/12 2006.01
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
12containing tungsten, tantalum, molybdenum, vanadium or niobium
C22C 38/16 2006.01
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
16containing copper
C21D 8/02 2006.01
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
02during manufacturing of plates or strips
CPC
C21D 8/02
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 BY DECARBURISATION, TEMPERING OR OTHER TREATMENTS
8Modifying the physical properties by deformation combined with, or followed by, heat treatment
02during manufacturing of plates or strips
C22C 38/00
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
C22C 38/04
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
04containing manganese
C22C 38/12
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
12containing tungsten, tantalum, molybdenum, vanadium, or niobium
C22C 38/16
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
16containing copper
C22C 38/60
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
60containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
Applicants
  • 주식회사 포스코 POSCO [KR]/[KR]
Inventors
  • 이병호 LEE, Byoung Ho
  • 조민호 JO, Minho
  • 홍영광 HONG, Young-Kwang
Agents
  • 유미특허법인 YOU ME PATENT AND LAW FIRM
Priority Data
10-2018-015298130.11.2018KR
10-2019-015336926.11.2019KR
Publication Language Korean (KO)
Filing Language Korean (KO)
Designated States
Title
(EN) STEEL SHEET HAVING CORROSION RESISTANCE IN LOW CONCENTRATION SULFURIC ACID/HYDROCHLORIC ACID COMPLEX CONDENSATION ATMOSPHERE AND MANUFACTURING METHOD THEREFOR
(FR) TÔLE D'ACIER PRÉSENTANT UNE RÉSISTANCE À LA CORROSION DANS UNE ATMOSPHÈRE DE CONDENSATION DE COMPLEXE ACIDE SULFURIQUE/ACIDE CHLORHYDRIQUE À FAIBLE CONCENTRATION ET SON PROCÉDÉ DE FABRICATION
(KO) 저농도 황산/염산 복합 응축 분위기에서 내식성을 갖는 강판 및 그 제조방법
Abstract
(EN)
A corrosion-resistant steel sheet according to an embodiment of the present invention comprises: by weight, 0.15% or less (excluding 0%) of carbon (C); 0.5 to 1.5% of manganese (Mn); 0.05 to 0.2% of antimony (Sb); 0.03 to 0.45% of tin (Sn); at least one of tungsten (W) and copper (Cu), wherein tungsten (W) is contained alone in an amount of 0.45% or less (excluding 0%), copper (Cu) is contained alone in an amount of 0.005 to 0.05%, or a combination of tungsten (W) and copper (Cu) is contained in an amount of 0.005 to 0.5%; and the balance of iron (Fe) and inevitable impurities, and satisfies formula 1 below. [Formula 1] 5×[Sb] + 3×[Sn] + [W] - 2×[Cu] ≥ 0.70 (wherein, [Sb], [Sn], [W] and [Cu] denote contents (wt%) of Sb, Sn, W and Cu, respectively. In the case that W or Cu is not contained, [W] or [Cu] is 0.)
(FR)
Selon un mode de réalisation, la présente invention concerne une tôle d'acier résistante à la corrosion comprenant : en poids, 0,15 % ou moins (à l'exclusion de 0 %) de carbone (C) ; 0,5 à 1,5 % de manganèse (Mn) ; 0,05 à 0,2 % d'antimoine (Sb) ; 0,03 à 0,45 % d'étain (Sn) ; du tungstène (W) et/ou du cuivre (Cu), le tungstène (W) étant contenu seul dans une quantité de 0,45 % ou moins (à l'exclusion de 0 %), le cuivre (Cu) étant contenu seul dans une quantité de 0,005 à 0,05 %, ou une combinaison de tungstène (W) et de cuivre (Cu) étant contenue dans une quantité de 0,005 à 0,5 % ; et le reste étant du fer (Fe) et des impuretés inévitables, et satisfaisant à la formule (1) ci-dessous. [Formule (1)] 5 × [Sb] + 3 × [Sn] + [W] - 2 × [Cu] ≥ 0,70 ([Sb], [Sn], [W] et [Cu] désignant des teneurs (% en poids) de Sb, Sn, W et Cu, respectivement. Dans le cas où W ou Cu n'est pas contenu, [W] ou [Cu] étant égal à 0.)
(KO)
본 발명의 일 실시예에 의한 내식성 강판은, 중량%로, 탄소(C): 0.15% 이하(0%를 제외함), 망간(Mn): 0.5 내지 1.5%, 안티몬(Sb): 0.05 내지 0.2% 및 주석(Sn): 0.03 내지 0.45%을 포함하고, 텅스텐(W) 및 구리(Cu) 중 1종 이상을 포함하되, 텅스텐(W)을 단독으로 0.45%이하(0%를 제외함)로 포함하거나, 구리(Cu)를 단독으로 0.005 내지 0.05% 포함하거나, 텅스텐(W) 및 구리(Cu)를 그 합량으로 0.005 내지 0.5% 포함하고, 잔부 철(Fe) 및 불가피한 불순물을 포함하고, 하기 식 1을 만족한다. [식 1] 5×[Sb] + 3×[Sn] + [W] - 2×[Cu] ≥ 0.70 (식 1에서, [Sb], [Sn], [W] 및 [Cu]는 각각 강판 내의 Sb, Sn, W 및 Cu의 함량(중량%)을 나타낸다. 단, W 또는 Cu를 포함하지 않는 경우 [W] 또는 [Cu]는 0을 나타낸다.)
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