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1. WO2020111006 - MANUFACTURING METHOD FOR NON-ORIENTED MAGNETIC STEEL SHEET

Publication Number WO/2020/111006
Publication Date 04.06.2020
International Application No. PCT/JP2019/046005
International Filing Date 25.11.2019
IPC
B21B 3/02 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
BROLLING OF METAL
3Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences
02Rolling special iron alloys
C21D 8/12 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
12during manufacturing of articles with special electromagnetic properties
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 38/00 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 38/14 2006.01
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
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
B21B 3/02
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
BROLLING OF METAL
3Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
02Rolling special iron alloys ; , e.g. stainless steel
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 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
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 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 38/00
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
C22C 38/14
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
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
  • JFEスチール株式会社 JFE STEEL CORPORATION [JP]/[JP]
Inventors
  • 大久保 智幸 OKUBO Tomoyuki
  • 上坂 正憲 UESAKA Masanori
  • 財前 善彰 ZAIZEN Yoshiaki
  • 尾田 善彦 ODA Yoshihiko
Agents
  • 杉村 憲司 SUGIMURA Kenji
Priority Data
2018-22026826.11.2018JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) MANUFACTURING METHOD FOR NON-ORIENTED MAGNETIC STEEL SHEET
(FR) PROCÉDÉ DE FABRICATION POUR FEUILLE D'ACIER MAGNÉTIQUE NON ORIENTÉE
(JA) 無方向性電磁鋼板の製造方法
Abstract
(EN)
The present invention makes it possible to stably improve a magnetic flux density by utilizing induction heating and radiation heating at a time of finish annealing for a non-oriented magnetic steel sheet. Provided is a manufacturing method for a non-oriented magnetic steel sheet, in which a slab having an adjusted predetermined component composition is hot-rolled, a hot-rolled sheet annealing is performed or not performed, cold rolling is performed one time, or cold rolling is performed two or more times with intermediate annealing performed therebetween, and then finish annealing is performed. In the manufacturing method, a recrystallization rate of a material before final cold rolling is set to be less than 80%, and {100}<011> intensity in a 1/4 layer of the material is set be equal to or less than 8. In the finish annealing, an average heating velocity at 600 to 720ºC is set to be equal to or more than 50ºC/s, and an average heating velocity at 720 to 760ºC is set to be equal to or more than 5ºC/s.
(FR)
La présente invention permet d'améliorer de manière stable une densité de flux magnétique en utilisant un chauffage par induction et un chauffage par rayonnement au moment d'un recuit de finition destinés à une feuille d'acier magnétique non orientée. L'invention concerne un procédé de fabrication d'une feuille d'acier magnétique non orientée, dans lequel une plaque présentant une composition de constituant prédéterminée ajustée est laminée à chaud, un recuit de feuille laminée à chaud est réalisé ou non, un laminage à froid est réalisé une fois ou un laminage à froid est réalisé deux fois ou plus à l'aide d'un recuit intermédiaire réalisé entre ces derniers, puis un recuit de finition est réalisé. Dans le procédé de fabrication, un taux de recristallisation d'un matériau avant le laminage à froid final est défini de manière à être inférieur à 80 %, et une intensité {100}<011> dans un 1/4 de couche du matériau est définie comme étant égale ou inférieure à 8. Dans le recuit de finition, une vitesse de chauffage moyenne à 600 à 720 °C est définie de manière à être égale ou supérieure à 50 °C/s et une vitesse de chauffage moyenne à 720 à 760 °C est définie de manière à être égale ou supérieure à 5 °C/s.
(JA)
無方向性電磁鋼板の仕上焼鈍に際し、誘導加熱と輻射加熱を活用することによって、磁束密度の安定した向上を可能ならしめる。 所定の成分組成に調整したスラブを、熱間圧延し、ついで熱延板焼鈍を行いまたは行わず、1回または中間焼鈍を挟む2回以上の冷間圧延を行ったのち、仕上焼鈍を行う無方向性電磁鋼板の製造方法において、 最終冷間圧延前の材料の再結晶率を80%未満、該材料の1/4層における{100}<011>強度を8以下とし、かつ仕上焼鈍において600~720℃の平均加熱速度を50℃/s以上、720~760℃の平均加熱速度を5℃/s以上とする。
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