EP3339464B1 - Procédé de fabrication d'une tôle d'acier à dureté élevée - Google Patents

Procédé de fabrication d'une tôle d'acier à dureté élevée Download PDF

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Publication number
EP3339464B1
EP3339464B1 EP16839505.1A EP16839505A EP3339464B1 EP 3339464 B1 EP3339464 B1 EP 3339464B1 EP 16839505 A EP16839505 A EP 16839505A EP 3339464 B1 EP3339464 B1 EP 3339464B1
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Prior art keywords
steel sheet
less
content
hardness
hot
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EP16839505.1A
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German (de)
English (en)
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EP3339464A1 (fr
EP3339464A4 (fr
Inventor
Young-Roc Im
Jun-Sang JANG
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Posco Holdings Inc
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Posco Co Ltd
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Priority to EP24150998.3A priority Critical patent/EP4324954A3/fr
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    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D8/00Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0226Hot rolling
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18Hardening; Quenching with or without subsequent tempering
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D8/00Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D8/00Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0247Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • C21D8/0263Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment following hot rolling
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D9/00Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/46Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/02Ferrous alloys, e.g. steel alloys containing silicon
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/06Ferrous alloys, e.g. steel alloys containing aluminium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/44Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/46Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/48Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/50Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/54Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/58Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D2211/00Microstructure comprising significant phases
    • C21D2211/002Bainite
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D2211/00Microstructure comprising significant phases
    • C21D2211/005Ferrite
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D2211/00Microstructure comprising significant phases
    • C21D2211/008Martensite

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Steel (AREA)
  • Heat Treatment Of Sheet Steel (AREA)

Claims (4)

  1. Procédé de fabrication d'une tôle d'acier à haute dureté, le procédé de fabrication d'une tôle d'acier, ayant une microstructure comprenant 95 % en volume ou plus d'une phase martensite et une dureté Brinell de 500 HB ou plus, comprenant : le laminage à chaud de finition à 870 °C à 930 °C et le refroidissement d'une brame d'acier constituée de carbone (C) : 0,05 % en poids à 0,3 % en poids, de silicium (Si) : plus de 0 % en poids à 0,5 % en poids ou moins, de manganèse (Mn) : plus de 0 % en poids à 2,5 % en poids ou moins, de chrome (Cr) : plus de 0 % en poids à 1,5 % en poids ou moins, de molybdène (Mo) : plus de 0 % en poids à 1,0 % en poids ou moins, de nickel (Ni) : plus de 0 % en poids à 1,0 % en poids ou moins, de niobium (Nb) : plus de 0 % en poids à 0,1 % en poids ou moins, de titane (Ti) : plus de 0 % en poids à 0,1 % en poids ou moins, de vanadium (V) : plus de 0 % en poids à 0,1 % en poids ou moins, de bore (B) : plus de 0 % en poids à 0,01 % en poids ou moins, d'aluminium (Al) : plus de 0 % en poids à 0,1 % en poids ou moins, d'un reste de fer (Fe) et d'autres impuretés inévitables, en tant que tôle d'acier laminée à chaud, dans lequel une teneur en carbone (C) satisfait la Relation (1),
    dans lequel une vitesse de refroidissement pendant le refroidissement de la tôle d'acier laminée à chaud est de 20 °C/s à 150 °C/s,
    dans lequel une température de fin de refroidissement pendant le refroidissement de la tôle d'acier laminée à chaud est le point Ms, qui est une température de début de transformation de martensite, ou en dessous, C une teneur en carbone C 0,481 0,104 Mn 0,035 Si 0,088 Cr 0,054 Ni 0,035 Mo 0,0003 C . R .
    Figure imgb0004
    où Mn, Si, Cr, Ni et Mo sont des valeurs représentant la teneur de chaque élément en % en poids, C.R. est une valeur représentant une vitesse de refroidissement pendant le refroidissement d'une tôle d'acier laminée à chaud, et son unité est °C/s.
  2. Procédé de fabrication d'une tôle d'acier à haute dureté selon la revendication 1, dans lequel la teneur en carbone (C) est de 0,19 % à 0,3 %.
  3. Procédé de fabrication d'une tôle d'acier à haute dureté selon la revendication 1, dans lequel la teneur en silicium (Si) est de 0,21 % à 0,5 %.
  4. Procédé de fabrication d'une tôle d'acier à haute dureté selon la revendication 1, dans lequel la teneur en manganèse est de 1,4 % à 2,5 %.
EP16839505.1A 2015-08-21 2016-08-18 Procédé de fabrication d'une tôle d'acier à dureté élevée Active EP3339464B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP24150998.3A EP4324954A3 (fr) 2015-08-21 2016-08-18 Tôle d'acier à dureté élevée et son procédé de fabrication

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020150117985A KR101696094B1 (ko) 2015-08-21 2015-08-21 고 경도 강판 및 그 제조방법
PCT/KR2016/009079 WO2017034216A1 (fr) 2015-08-21 2016-08-18 Tôle d'acier à dureté élevée et son procédé de fabrication

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP24150998.3A Division EP4324954A3 (fr) 2015-08-21 2016-08-18 Tôle d'acier à dureté élevée et son procédé de fabrication
EP24150998.3A Division-Into EP4324954A3 (fr) 2015-08-21 2016-08-18 Tôle d'acier à dureté élevée et son procédé de fabrication

Publications (3)

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EP3339464A1 EP3339464A1 (fr) 2018-06-27
EP3339464A4 EP3339464A4 (fr) 2018-08-08
EP3339464B1 true EP3339464B1 (fr) 2024-07-03

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EP24150998.3A Pending EP4324954A3 (fr) 2015-08-21 2016-08-18 Tôle d'acier à dureté élevée et son procédé de fabrication

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US (1) US20180237875A1 (fr)
EP (2) EP3339464B1 (fr)
JP (1) JP6843119B2 (fr)
KR (1) KR101696094B1 (fr)
CN (1) CN107923023B (fr)
WO (1) WO2017034216A1 (fr)

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KR102031443B1 (ko) 2017-12-22 2019-11-08 주식회사 포스코 우수한 경도와 충격인성을 갖는 내마모강 및 그 제조방법
KR102031446B1 (ko) * 2017-12-22 2019-11-08 주식회사 포스코 우수한 경도와 충격인성을 갖는 내마모강 및 그 제조방법
KR102045646B1 (ko) * 2017-12-26 2019-11-15 주식회사 포스코 재질 균일성이 우수한 내마모 강판 및 그 제조방법
KR102175570B1 (ko) * 2018-09-27 2020-11-06 주식회사 포스코 우수한 경도와 충격인성을 갖는 내마모강 및 그 제조방법
JP7163887B2 (ja) * 2019-08-21 2022-11-01 Jfeスチール株式会社 耐疲労特性に優れた耐摩耗鋼材
JP7163889B2 (ja) * 2019-08-21 2022-11-01 Jfeスチール株式会社 耐疲労特性に優れた耐摩耗鋼材の製造方法
DE102019215055A1 (de) * 2019-09-30 2021-04-01 Thyssenkrupp Steel Europe Ag Verfahren zur Herstellung eines Stahlproduktes sowie ein entsprechendes Stahlprodukt
CN113215488B (zh) * 2021-05-07 2022-06-17 马鞍山钢铁股份有限公司 一种免热处理nm360耐磨钢板及其制造方法

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Also Published As

Publication number Publication date
CN107923023A (zh) 2018-04-17
JP6843119B2 (ja) 2021-03-17
EP4324954A3 (fr) 2024-05-22
CN107923023B (zh) 2020-04-24
EP3339464A1 (fr) 2018-06-27
US20180237875A1 (en) 2018-08-23
EP3339464A4 (fr) 2018-08-08
JP2018528325A (ja) 2018-09-27
KR101696094B1 (ko) 2017-01-13
WO2017034216A1 (fr) 2017-03-02
EP4324954A2 (fr) 2024-02-21

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