Processing

Please wait...

Settings

Settings

Goto Application

1. WO2019189872 - FERRITE-BASED STAINLESS STEEL SHEET AND PRODUCTION METHOD THEREOF, AND FERRITE-BASED STAINLESS MEMBER

Publication Number WO/2019/189872
Publication Date 03.10.2019
International Application No. PCT/JP2019/014318
International Filing Date 29.03.2019
IPC
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 9/46 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
9Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
46for sheet metals
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
CPC
C21D 2211/005
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
2211Microstructure comprising significant phases
005Ferrite
C21D 8/0221
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
02during manufacturing of plates or strips
0221characterised by the working steps
C21D 8/0226
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
02during manufacturing of plates or strips
0221characterised by the working steps
0226Hot rolling
C21D 8/0236
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
02during manufacturing of plates or strips
0221characterised by the working steps
0236Cold rolling
C21D 8/0273
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
02during manufacturing of plates or strips
0247characterised by the heat treatment
0273Final recrystallisation annealing
C21D 9/46
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
9Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
46for sheet metals
Applicants
  • 日鉄ステンレス株式会社 NIPPON STEEL STAINLESS STEEL CORPORATION [JP]/[JP]
Inventors
  • 西村 航 NISHIMURA, Koh
  • 井上 宜治 INOUE, Yoshiharu
  • 濱田 純一 HAMADA, Junichi
Agents
  • 特許業務法人ブライタス BRIGHTAS IP ATTORNEYS
Priority Data
2018-06822130.03.2018JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) FERRITE-BASED STAINLESS STEEL SHEET AND PRODUCTION METHOD THEREOF, AND FERRITE-BASED STAINLESS MEMBER
(FR) TÔLE D'ACIER INOXYDABLE À BASE DE FERRITE ET SON PROCÉDÉ DE PRODUCTION, ET ÉLÉMENT INOXYDABLE À BASE DE FERRITE
(JA) フェライト系ステンレス鋼板、およびその製造方法ならびにフェライト系ステンレス部材
Abstract
(EN)
The ferrite-based stainless steel sheet: has a chemical composition comprising, by mass%, C: 0.001-0.020%, Si: 0.02-1.50%, Mn: 0.02-1.50%, P: 0.01-0.05%, S: 0.0001-0.01%, Cr: 10.0-25.0%, Ti: 0.01-0.30%, N: 0.001-0.030%, an optional element, and the balance: Fe and inevitable impurities; has a grain size number of 6 or higher; satisfies [A + B ≥ 12.0/t], [X + Y ≥ 12.0/(t - 0.3)], and [(X + Y) - (A + B) ≤ 5.0] in terms of crystal orientation strength of the ferrite phase as measured by X-ray diffraction; and has a sheet thickness of 1.0 mm or more. Here, in the formulas, t represents sheet thickness (mm), A represents {111} <112> crystal orientation strength of sheet thickness center part, B represents {111} <112> crystal orientation strength of 1/4 sheet thickness part, X represents {322} <236> crystal orientation strength of the sheet thickness center part, and Y represents {322} <236> crystal orientation strength of the 1/4 sheet thickness part.
(FR)
La tôle d'acier inoxydable à base de ferrite a une composition chimique comprenant, en % en masse, C : 0,001-0,020 %, Si : 0,02-1,50 %, Mn : 0,02-1,50 %, P: 0,01-0,05 %, S : 0,0001-0,01 %, Cr : 10,0-25,0 %, Ti : 0,01-0,30 %, N : 0,001-0,030 %, un élément facultatif, et le reste étant constitué de Fe et d'impuretés inévitables. La tôle en question a un numéro granulométrique égal à 6 ou plus ; elle satisfait [A + B ≥ 12,0/t], [X + Y ≥ 12,0/ (t - 0,3)] et [(X +Y)- (A + B) ≤ 5,0] en termes de force d'orientation cristalline de la phase ferritique telle que mesurée par diffraction des rayons X ; et elle a une épaisseur de tôle de 1,0 mm ou plus. Dans les formules exposées ici, t représente l'épaisseur de tôle (mm), A représente la force d'orientation cristalline {111} <112> de la partie centrale de l'épaisseur de tôle, B représente la force d'orientation cristalline {111} <112> à 1/4 de l'épaisseur de tôle, X représente la force d'orientation cristalline {322} <236> de la partie centrale de l'épaisseur de tôle, et Y représente la force d'orientation cristalline {322} <236> à 1/4 de l'épaisseur de tôle.
(JA)
化学組成が、質量%で、C:0.001~0.020%、Si:0.02~1.50%、Mn:0.02~1.50%、P:0.01~0.05%、S:0.0001~0.01%、Cr:10.0~25.0%、Ti:0.01~0.30%、N:0.001~0.030%、任意元素、および残部:Feおよび不可避的不純物であり、結晶粒度番号が6以上であり、かつ、X線回折によるフェライト相の結晶方位強度において、[A+B≧12.0/t]、[X+Y≧12.0/(t-0.3)]および[(X+Y)-(A+B)≦5.0]を満足し、板厚が1.0mm以上である、フェライト系ステンレス鋼板。但し、上記式中においてt:板厚(mm)、A:板厚中心部の{111}<112>結晶方位強度、B:板厚1/4部の{111}<112>結晶方位強度、X:板厚中心部の{322}<236>結晶方位強度、Y:板厚1/4部の{322}<236>結晶方位強度を示す。
Also published as
MXMX/a/2020/010123
TH2001005587
Latest bibliographic data on file with the International Bureau