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1. WO2020111734 - ACID-RESISTANT STEEL SHEET AND MANUFACTURING METHOD THEREFOR

Publication Number WO/2020/111734
Publication Date 04.06.2020
International Application No. PCT/KR2019/016378
International Filing Date 26.11.2019
IPC
C22C 38/02 2006.01
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 38/04 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 38/06 2006.01
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 38/00 2006.01
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
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 38/02
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 38/04
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 38/06
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
06containing aluminium
Applicants
  • 주식회사 포스코 POSCO [KR]/[KR]
Inventors
  • 조민호 JO, Min Ho
  • 이병호 LEE, Byoung Ho
  • 홍영광 HONG, Young-Kwang
Agents
  • 유미특허법인 YOU ME PATENT AND LAW FIRM
Priority Data
10-2018-015313630.11.2018KR
Publication Language Korean (KO)
Filing Language Korean (KO)
Designated States
Title
(EN) ACID-RESISTANT STEEL SHEET AND MANUFACTURING METHOD THEREFOR
(FR) TÔLE D'ACIER RÉSISTANT AUX ACIDES ET PROCÉDÉ DE FABRICATION ASSOCIÉ
(KO) 내산용 강판 및 그 제조방법
Abstract
(EN)
An acid-resistant steel sheet according to one embodiment of the present invention comprises, by wt%, 0.1% or less of C (excluding 0%), 2.0-4.0% of Si, and the balance of Fe and inevitable impurities, wherein the Si amount of a surface part from the surface of the steel sheet to an inward depth of 10 μm is 15 wt% or more.
(FR)
La présente invention, selon un mode de réalisation, concerne une tôle d'acier résistant aux acides comprenant, en % en poids, 0,1 % ou moins de C (à l'exclusion de 0 %), de 2,0 à 4,0 % de Si, et le reste étant du Fe et des impuretés inévitables, la quantité de Si d'une partie de surface allant de la surface de la tôle d'acier à une profondeur vers l'intérieur de 10 µm étant supérieure ou égale à 15 % en poids.
(KO)
본 발명의 일 실시예에 의한 내산용 강판은 중량%로 C: 0.1% 이하(0%를 제외함) 및 Si: 2.0 내지 4.0% 포함하고, 잔부 Fe 및 불가피한 불순물을 포함하고, 강판 표면으로부터 내부 방향으로 깊이 10㎛ 까지의 표면부의 Si 함량이 15 중량% 이상이다.
Also published as
Latest bibliographic data on file with the International Bureau