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1. WO2012141206 - HIGH-STRENGTH NON-ORIENTED MAGNETIC STEEL SHEET

Publication Number WO/2012/141206
Publication Date 18.10.2012
International Application No. PCT/JP2012/059886
International Filing Date 11.04.2012
Chapter 2 Demand Filed 04.02.2013
IPC
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 38/16 2006.1
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 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
H01F 1/16 2006.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
1Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
01of inorganic materials
03characterised by their coercivity
12of soft-magnetic materials
14metals or alloys
16in the form of sheets
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 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
C21D 8/1261
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
1244the heat treatment(s) being of interest
1261following hot rolling
C21D 8/1272
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
1244the heat treatment(s) being of interest
1272Final recrystallisation annealing
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
Applicants
  • 新日鐵住金株式会社 NIPPON STEEL & SUMITOMO METAL CORPORATION [JP]/[JP] (AllExceptUS)
  • 有田 吉宏 ARITA, Yoshihiro [JP]/[JP] (UsOnly)
  • 藤倉 昌浩 FUJIKURA, Masahiro [JP]/[JP] (UsOnly)
  • 村上 英邦 MURAKAMI, Hidekuni [JP]/[JP] (UsOnly)
Inventors
  • 有田 吉宏 ARITA, Yoshihiro
  • 藤倉 昌浩 FUJIKURA, Masahiro
  • 村上 英邦 MURAKAMI, Hidekuni
Agents
  • 國分 孝悦 KOKUBUN, Takayoshi
Priority Data
2011-08952913.04.2011JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) HIGH-STRENGTH NON-ORIENTED MAGNETIC STEEL SHEET
(FR) TÔLE D'ACIER MAGNÉTIQUE NON ORIENTÉE À HAUTE RÉSISTANCE
(JA) 高強度無方向性電磁鋼板
Abstract
(EN) This high-strength non-oriented magnetic steel sheet contains, in mass%, 0.010% or less of C, 2.0-4.0% (inclusive) of Si, 0.05-0.50% (inclusive) of Mn, 0.2-3.0% (inclusive) of Al, 0.005% or less of N, 0.005-0.030% (inclusive) of S and 0.5-3.0% (inclusive) of Cu, with the balance made up of Fe and unavoidable impurities. This high-strength non-oriented magnetic steel sheet satisfies formula (1) when the Mn content is represented by [Mn] and the S content is represented by [S], and contains sulfides having circle-equivalent diameters of 0.1-1.0 μm (inclusive) at a density from 1.0 × 104 pieces/mm2 to 1.0 × 106 pieces/mm2 (inclusive). 10 ≤ [Mn]/[S] ≤ 50 (1)
(FR) La présente invention se rapporte à une tôle d'acier magnétique non orientée à haute résistance qui contient, en % en masse, une quantité de carbone (C) égale ou inférieure à 0,010 %, une quantité de silicium (Si) comprise entre 2,0 et 4,0 % (inclus), une quantité de manganèse (Mn) comprise entre 0,05 et 0,50 % (inclus), une quantité d'aluminium (Al) comprise entre 0,2 et 3,0 % (inclus), une quantité d'azote (N) égale ou inférieure à 0,005 %, une quantité de soufre (S) comprise entre 0,005 et 0,030 % (inclus) et une quantité de cuivre (Cu) comprise entre 0,5 et 3,0 % (inclus), le reste étant du fer (Fe) et des impuretés inévitables. Cette tôle d'acier magnétique non orientée à haute résistance satisfait la formule (1) lorsque la teneur en manganèse (Mn) est représentée par [Mn] et que la teneur en soufre (S) est représentée par [S], et contient des sulfures qui présentent des diamètres de cercle équivalent compris entre 0,1 et 1,0 μm (inclus) à une densité qui varie entre 1,0 × 104 pièces/mm2 et 1,0 × 106 pièces/mm2 (inclus). 10 ≤ [Mn]/[S] ≤ 50 (1)
(JA)  質量%で、C:0.010%以下、Si:2.0%以上4.0%以下、Mn:0.05%以上0.50%以下、Al:0.2%以上3.0%以下、N:0.005%以下、S:0.005%以上0.030%以下、及びCu:0.5%以上3.0%以下、を含有し、残部がFe及び不可避的不純物からなる。Mn含有量を[Mn]、S含有量を[S]と表したときに、式(1)が成り立ち、円相当径が0.1μm以上1.0μm以下の硫化物が1mm当たり1.0×10個以上1.0×10個以下含まれている。 10≦[Mn]/[S]≦50 ・・・ (1)
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