EP3848477A4 - Tôle d'acier laminée à froid à haute teneur en carbone et son procédé de production, et pièces mécaniques en acier à haute teneur en carbone - Google Patents

Tôle d'acier laminée à froid à haute teneur en carbone et son procédé de production, et pièces mécaniques en acier à haute teneur en carbone Download PDF

Info

Publication number
EP3848477A4
EP3848477A4 EP19817932.7A EP19817932A EP3848477A4 EP 3848477 A4 EP3848477 A4 EP 3848477A4 EP 19817932 A EP19817932 A EP 19817932A EP 3848477 A4 EP3848477 A4 EP 3848477A4
Authority
EP
European Patent Office
Prior art keywords
carbon
production method
method therefor
mechanical parts
parts made
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP19817932.7A
Other languages
German (de)
English (en)
Other versions
EP3848477A1 (fr
Inventor
Eiji Tsuchiya
Yuta Matsumura
Hiroki Ota
Yuka Miyamoto
Yasuhiro Sakurai
Hideyuki Kimura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Steel Corp
TOKUSHU KINZOKU EXCEL CO Ltd
Original Assignee
JFE Steel Corp
TOKUSHU KINZOKU EXCEL CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by JFE Steel Corp, TOKUSHU KINZOKU EXCEL CO Ltd filed Critical JFE Steel Corp
Publication of EP3848477A1 publication Critical patent/EP3848477A1/fr
Publication of EP3848477A4 publication Critical patent/EP3848477A4/fr
Pending legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18Hardening; Quenching with or without subsequent tempering
    • C21D1/25Hardening, combined with annealing between 300 degrees Celsius and 600 degrees Celsius, i.e. heat refining ("Vergüten")
    • 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
    • C21D1/26Methods of annealing
    • 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
    • C21D1/26Methods of annealing
    • C21D1/32Soft annealing, e.g. spheroidising
    • 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
    • C21D1/56General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
    • C21D1/58Oils
    • 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
    • C21D8/0205Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips of ferrous alloys
    • 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
    • C21D8/0236Cold 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
    • 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
    • C21D8/0268Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment between cold rolling steps
    • 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
    • C21D8/0273Final recrystallisation annealing
    • 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
    • C21D9/26Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for needles; for teeth for card-clothing
    • 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
    • C22C38/04Ferrous alloys, e.g. steel alloys containing manganese
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/12Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • 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
    • C22C38/22Ferrous alloys, e.g. steel alloys containing chromium 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
    • C22C38/24Ferrous alloys, e.g. steel alloys containing chromium 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
    • C22C38/26Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
    • 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
    • C21D2211/004Dispersions; Precipitations
    • 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
    • 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
    • C21D2261/00Machining or cutting being involved

Landscapes

  • 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)
  • Oil, Petroleum & Natural Gas (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Heat Treatment Of Articles (AREA)
EP19817932.7A 2019-11-08 2019-11-08 Tôle d'acier laminée à froid à haute teneur en carbone et son procédé de production, et pièces mécaniques en acier à haute teneur en carbone Pending EP3848477A4 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2019/043828 WO2021090472A1 (fr) 2019-11-08 2019-11-08 Tôle d'acier laminée à froid à haute teneur en carbone et son procédé de production, et pièces mécaniques en acier à haute teneur en carbone

Publications (2)

Publication Number Publication Date
EP3848477A1 EP3848477A1 (fr) 2021-07-14
EP3848477A4 true EP3848477A4 (fr) 2022-05-25

Family

ID=75849823

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19817932.7A Pending EP3848477A4 (fr) 2019-11-08 2019-11-08 Tôle d'acier laminée à froid à haute teneur en carbone et son procédé de production, et pièces mécaniques en acier à haute teneur en carbone

Country Status (6)

Country Link
EP (1) EP3848477A4 (fr)
JP (1) JP6880245B1 (fr)
KR (1) KR102329386B1 (fr)
CN (1) CN113099723B (fr)
TW (1) TWI734291B (fr)
WO (1) WO2021090472A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4324953A1 (fr) * 2021-06-18 2024-02-21 JFE Steel Corporation Pièce en acier et procédé de fabrication de pièce en acier
CN117396624A (zh) * 2021-06-18 2024-01-12 杰富意钢铁株式会社 冷轧钢板、钢制部件、冷轧钢板的制造方法和钢制部件的制造方法
CN114055082B (zh) * 2021-11-15 2024-02-06 江苏九天光电科技有限公司 一种钩针用优特钢精密钢带的生产方法
CN114855076B (zh) * 2022-04-15 2023-03-17 首钢集团有限公司 一种高球化率高碳钢及其制备方法
CN114850436B (zh) * 2022-05-06 2023-05-09 上海交通大学 一种高碳高合金钢的碳化物细化方法
CN114774795A (zh) * 2022-05-09 2022-07-22 湖南华菱涟钢特种新材料有限公司 一种超高碳素工具钢热轧钢板及其生产方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1772939A (zh) * 2005-11-17 2006-05-17 上海隆兴特钢有限公司 高纯净钢纺织针用钢带及其生产方法
EP3216889A1 (fr) * 2015-08-14 2017-09-13 Tokushu Kinzoku Excel Co., Ltd. Tôle d'acier à haute teneur en carbone laminée à froid et son procédé de fabrication
US20180202022A1 (en) * 2015-07-16 2018-07-19 Nisshin Steel Co., Ltd. Steel sheet for textile machinery parts and method for manufacturing the same

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4492105B2 (ja) * 2003-11-28 2010-06-30 Jfeスチール株式会社 伸びフランジ性に優れた高強度冷延鋼板の製造方法
JP4530268B2 (ja) 2004-08-26 2010-08-25 日新製鋼株式会社 衝撃特性に優れた高炭素鋼部材及びその製造方法
JP5030280B2 (ja) 2007-07-20 2012-09-19 日新製鋼株式会社 焼入れ性、疲労特性、靭性に優れた高炭素鋼板及びその製造方法
KR101128942B1 (ko) * 2008-12-24 2012-03-27 주식회사 포스코 열처리 특성이 우수한 미세구상화 강판 및 그 제조방법
CN103210098B (zh) * 2010-09-16 2015-09-09 Posco公司 高碳热轧钢板、高碳冷轧钢板及其制造方法
KR101614230B1 (ko) * 2011-09-30 2016-04-20 신닛테츠스미킨 카부시키카이샤 베이킹 경화성이 우수한 고강도 용융 아연 도금 강판, 고강도 합금화 용융 아연 도금 강판 및 그것들의 제조 방법
CN103290308B (zh) * 2012-02-27 2017-04-12 株式会社神户制钢所 高强度冷轧钢板及其制造方法
EP3015561B1 (fr) * 2013-06-27 2018-06-13 Nisshin Steel Co., Ltd. Matériau d'acier résistant à l'abrasion, ayant d'excellentes caractéristiques de fatigue, et son procédé de fabrication
KR101799712B1 (ko) * 2013-11-22 2017-11-20 신닛테츠스미킨 카부시키카이샤 고탄소 강판 및 그 제조 방법
JP6615039B2 (ja) 2016-04-13 2019-12-04 日鉄日新製鋼株式会社 靭性に優れる耐摩耗性鋼板
CN110306027A (zh) * 2019-07-02 2019-10-08 浙江豪环新材料有限公司 一种t8碳素钢冷轧生产工艺

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1772939A (zh) * 2005-11-17 2006-05-17 上海隆兴特钢有限公司 高纯净钢纺织针用钢带及其生产方法
US20180202022A1 (en) * 2015-07-16 2018-07-19 Nisshin Steel Co., Ltd. Steel sheet for textile machinery parts and method for manufacturing the same
EP3216889A1 (fr) * 2015-08-14 2017-09-13 Tokushu Kinzoku Excel Co., Ltd. Tôle d'acier à haute teneur en carbone laminée à froid et son procédé de fabrication

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2021090472A1 *

Also Published As

Publication number Publication date
KR102329386B1 (ko) 2021-11-19
EP3848477A1 (fr) 2021-07-14
CN113099723A (zh) 2021-07-09
JPWO2021090472A1 (ja) 2021-11-25
TW202118881A (zh) 2021-05-16
JP6880245B1 (ja) 2021-06-02
KR20210056880A (ko) 2021-05-20
CN113099723B (zh) 2023-02-17
TWI734291B (zh) 2021-07-21
WO2021090472A1 (fr) 2021-05-14

Similar Documents

Publication Publication Date Title
EP3848477A4 (fr) Tôle d'acier laminée à froid à haute teneur en carbone et son procédé de production, et pièces mécaniques en acier à haute teneur en carbone
EP3770292A4 (fr) Tôle d'acier laminée à froid à ténacité élevée et son procédé de fabrication
EP4043595A4 (fr) Feuille d'acier laminée à froid et son procédé de fabrication
EP3971308A4 (fr) Élément à haute résistance, procédé de fabrication d'un élément à haute résistance et procédé de fabrication d'une tôle en acier pour élément à haute résistance
EP3889282A4 (fr) Tôle d'acier haute résistance et procédé de fabrication de celle-ci
EP4012055A4 (fr) Feuille d'acier mince à haute résistance et son procédé de fabrication
EP3950974A4 (fr) Tôle en acier ainsi que procédé de fabrication de celle-ci, et tôle en acier plaquée
EP3705592A4 (fr) Tôle d'acier laminée à froid à haute résistance, tôle d'acier plaquée à haute résistance, et leurs procédés de production
EP4029957A4 (fr) Tôle en acier hautement résistante, et procédé de fabrication de celle-ci
EP3789510A4 (fr) Tôle fine d'acier et son procédé de production
EP3854900A4 (fr) Élément en acier, tôle d'acier et leurs procédés de production
EP3940094A4 (fr) Tôle d'acier à haute résistance et son procédé de production
EP3825432A4 (fr) Tôle d'acier de haute résistance et procédé de production pour celle-ci
EP3825433A4 (fr) Tôle d'acier à haute résistance et son procédé de production
EP3901303A4 (fr) Tôle d'acier laminée à chaud à haute teneur en carbone et son procédé de fabrication
EP3922738A4 (fr) Élément en acier revêtu, tôle d'acier revêtue et procédés de production d'un tel élément et d'une telle tôle d'acier
EP3889283A4 (fr) Tôle d'acier haute résistance et procédé de fabrication de celle-ci
EP3916112A4 (fr) Tôle d'acier épaisse et son procédé de production
EP4015660A4 (fr) Tôle d'acier, élément, procédé de production de ladite tôle d'acier et procédé de production dudit élément
EP3910087A4 (fr) Tôle d'acier laminée à froid à résistance élevée et procédé pour sa production
EP4015659A4 (fr) Tôle d'acier résistante à l'usure et son procédé de production
EP3954792A4 (fr) Tôle d'acier et son procédé de production
EP4029956A4 (fr) Tôle en acier hautement résistante, et procédé de fabrication de celle-ci
EP4029959A4 (fr) Tôle en acier hautement résistante, et procédé de fabrication de celle-ci
EP4001447A4 (fr) Tôle d'acier, élément et leurs procédés de production

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20191220

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: DE

Ref legal event code: R079

Free format text: PREVIOUS MAIN CLASS: C22C0038000000

Ipc: C21D0009460000

A4 Supplementary search report drawn up and despatched

Effective date: 20220425

RIC1 Information provided on ipc code assigned before grant

Ipc: C21D 8/02 20060101ALI20220419BHEP

Ipc: C22C 38/24 20060101ALI20220419BHEP

Ipc: C22C 38/22 20060101ALI20220419BHEP

Ipc: C22C 38/04 20060101ALI20220419BHEP

Ipc: C22C 38/02 20060101ALI20220419BHEP

Ipc: C21D 9/26 20060101ALI20220419BHEP

Ipc: C21D 1/58 20060101ALI20220419BHEP

Ipc: C21D 1/32 20060101ALI20220419BHEP

Ipc: C21D 1/26 20060101ALI20220419BHEP

Ipc: C21D 1/25 20060101ALI20220419BHEP

Ipc: C21D 1/18 20060101ALI20220419BHEP

Ipc: C22C 38/12 20060101ALI20220419BHEP

Ipc: C22C 38/26 20060101ALI20220419BHEP

Ipc: C21D 9/46 20060101AFI20220419BHEP

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)