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1. WO2015020028 - SOFT HIGH-CARBON STEEL SHEET

Publication Number WO/2015/020028
Publication Date 12.02.2015
International Application No. PCT/JP2014/070570
International Filing Date 05.08.2014
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 38/06 2006.1
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 38/60 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
C21C 7/00 2006.1
CCHEMISTRY; METALLURGY
21METALLURGY OF IRON
CPROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
7Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/-C21C5/118
C21C 7/04 2006.1
CCHEMISTRY; METALLURGY
21METALLURGY OF IRON
CPROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
7Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/-C21C5/118
04Removing impurities by adding a treating agent
C21C 7/06 2006.1
CCHEMISTRY; METALLURGY
21METALLURGY OF IRON
CPROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
7Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/-C21C5/118
04Removing impurities by adding a treating agent
06Deoxidising, e.g. killing
CPC
C21D 1/32
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
1General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
26Methods of annealing
32Soft annealing, e.g. spheroidising
C21D 2201/05
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
2201Treatment for obtaining particular effects
05Grain orientation
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 8/0263
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
0263following hot 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
  • 株式会社神戸製鋼所 KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.) [JP]/[JP]
Inventors
  • 梶原 桂 KAJIHARA Katsura
Agents
  • 濱田 百合子 HAMADA Yuriko
Priority Data
2013-16426807.08.2013JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) SOFT HIGH-CARBON STEEL SHEET
(FR) TÔLE D'ACIER DOUX À TENEUR ÉLEVÉE EN CARBONE
(JA) 軟質高炭素鋼板
Abstract
(EN)  The present invention pertains to a soft high-carbon steel sheet comprising 0.65-1.0% of C, 0.10-0.60% of Si, 0.10-1.0% of Mn, 0.01-0.1% of Al, more than 0% and up to 0.03% of P, and more than 0% and up to 0.01% of S (percentages given with respect to mass), the remainder comprising iron and inevitable impurities. The surface area of ferrite crystal grains present at a depth of t/4 (t: sheet thickness) and having a sheet-surface orientation of 10° or less relative to the (123) plane is 20% or more, and the average diameter of the ferrite crystal grains present at the depth of t/4 is 3-50 μm.
(FR)  La présente invention concerne une tôle d'acier doux à teneur élevée en carbone comprenant de 0,65 à 1,0 % de C, de 0,10 à 0,60 % de Si, de 0,10 à 1,0 % de Mn, de 0,01 à 0,1 % d'Al, plus de 0 % et jusqu'à 0,03 % de P, et plus de 0 % et jusqu'à 0,01 % de S (pourcentages donnés en masse), le complément comprenant du fer et des impuretés inévitables. La surface des grains de cristaux de ferrite, présents à une profondeur de t/4 (t : épaisseur de la tôle) et ayant une orientation de surface de tôle inférieure ou égale à 10° par rapport au plan (123), est supérieure ou égale à 20 %, et le diamètre moyen des grains de cristaux de ferrite présents à la profondeur de t/4 est compris entre 3 et 50 µm.
(JA)  本発明は、質量%で、C:0.65~1.0%、Si:0.10~0.60%、Mn:0.10~1.0%、Al:0.01~0.1%、P:0%超0.03%以下、S:0%超0.01%以下、をそれぞれ含み、残部が鉄および不可避的不純物からなる成分組成を有するとともに、板厚をtと表した場合の深さt/4の位置に存在するフェライト結晶粒に関し、板面方位が(123)面から10°以内のフェライト結晶粒の面積率が20%以上であるとともに、前記深さt/4の位置に存在するフェライト結晶粒の平均粒径が3~50μmである軟質高炭素鋼板に関する。
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