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1. WO2019132129 - NON-ORIENTED ELECTRICAL STEEL SHEET AND METHOD FOR PRODUCING SAME

Publication Number WO/2019/132129
Publication Date 04.07.2019
International Application No. PCT/KR2018/005623
International Filing Date 16.05.2018
IPC
C22C 38/02 2006.1
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 38/60 2006.1
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 38/00 2006.1
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
C22C 38/12 2006.1
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 38/14 2006.1
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
14containing titanium or zirconium
C21D 8/12 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
12during manufacturing of articles with special electromagnetic properties
CPC
C21D 6/00
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
6Heat treatment of ferrous alloys
C21D 6/008
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
6Heat treatment of ferrous alloys
008containing Si
C21D 8/12
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
12during manufacturing of articles with special electromagnetic properties
C21D 8/1205
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
12during manufacturing of articles with special electromagnetic properties
1205involving a particular fabrication or treatment of ingot or slab
C21D 8/1222
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
12during manufacturing of articles with special electromagnetic properties
1216the working step(s) being of interest
1222Hot rolling
C21D 8/1233
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
12during manufacturing of articles with special electromagnetic properties
1216the working step(s) being of interest
1233Cold rolling
Applicants
  • 주식회사 포스코 POSCO [KR]/[KR]
Inventors
  • 이현주 LEE, Hun Ju
  • 김용수 KIM, Yong-Soo
  • 신수용 SHIN, Su-Yong
Agents
  • 유미 특허법인 YOU ME PATENT AND LAW FIRM
Priority Data
10-2017-017991826.12.2017KR
Publication Language Korean (ko)
Filing Language Korean (KO)
Designated States
Title
(EN) NON-ORIENTED ELECTRICAL STEEL SHEET AND METHOD FOR PRODUCING SAME
(FR) TÔLE D'ACIER ÉLECTRIQUE NON ORIENTÉE ET SON PROCÉDÉ DE FABRICATION
(KO) 무방향성 전기강판 및 그 제조방법
Abstract
(EN) A non-oriented electrical steel sheet according to an embodiment of the present invention comprises 2.0 to 4.0 wt% of Si, 0.05 to 1.5 wt% of Al, 0.05 to 2.5 wt% of Mn, 0.005 wt% or less (excluding 0 wt%) of C, 0.005 wt% or less (excluding 0 wt%) of N, 0.001 to 0.1 wt% of Sn, 0.001 to 0.1 wt% of Sb, 0.001 to 0.1 wt% of P, 0.001 to 0.01 wt% of As, 0.0005 to 0.01 wt% of Se, 0.0005 to 0.01 wt% of Pb, 0.0005 to 0.01 wt% of Bi, and the remainder of Fe and inevitable impurities, wherein the Taylor factor (M) of each grain included in the steel sheet is represented by the following formula 1, and the average Taylor factor value of the steel sheet is 2.75 or lower: (I) (in formula 1, σ denotes macroscopic stress, and τCRSS denotes critical resolved shear stress).
(FR) Selon un mode de réalisation de la présente invention, une tôle d'acier électrique non orientée comprend de 2,0 à 4,0 % en poids de Si, de 0,05 à 1,5 % en poids d'Al, de 0,05 à 2,5 % en poids de Mn, 0,005 % en poids ou moins (à l'exclusion de 0 % en poids) de C, 0,005 % en poids ou moins (à l'exclusion de 0 % en poids) de N, de 0,001 à 0,1 % en poids de Sn, de 0,001 à 0,1 % en poids de Sb, de 0,001 à 0,1 % en poids de P, de 0,001 à 0,01 % en poids d'As, de 0,0005 à 0,01 % en poids de Se, de 0,0005 à 0,01 % en poids de Pb et de 0,0005 à 0,01 % en poids de Bi, le reste étant du Fe et des impuretés inévitables. Le facteur de Taylor (M) de chaque grain compris dans la tôle d'acier est représenté par la formule 1 ci-après, la valeur moyenne du facteur de Taylor de la tôle d'acier étant inférieure ou égale à 2,75 ou moins : (I) (dans la formule 1, σ représente une contrainte macroscopique et τCRSS représente une contrainte de cisaillement critique résolue).
(KO) 본 발명의 일 실시예에 의한 무방향성 전기강판은 중량 %로, Si : 2.0 내지 4.0%, A1 : 0.05 내지 1.5%, Mn : 0.05 내지 2.5%, C : 0.005%이하 (0%를 제외함), N : 0.005%이하 (0%를 제외함) Sn : 0.001 내지 0.1%, Sb : 0.001 내지 0.1%, P : 0.001 내지 0.1%, As : 0.001 내지 0.01%, Se : 0.0005 내지 0.01%, Pb: 0.0005 내지 0.01%, Bi : 0.0005 내지 0.01% 및 잔부는 Fe 및 불가피한 불순물을 포함하고, 강판 내에 포함된 각 결정립의 테일러 팩터 (Taylor Factor, M)가 하기 식 1로 표시되고, 강판의 평균 테일러 팩터 값이 2.75 이하이다. (I) (식 1에서, σ은 거시적 응력을 의미하고, τCRSS는 임계분해전단응력 (Critical Resolved Shear Stress)을 의미한다.)
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