EP3889314A4 - Tôle d'acier plaquée avec un alliage d'al-fe pour formage à la presse à chaud présentant une excellente résistance à la corrosion et une excellente résistance à la chaleur, pièce formée à la presse à chaud et procédé de fabrication associé - Google Patents

Tôle d'acier plaquée avec un alliage d'al-fe pour formage à la presse à chaud présentant une excellente résistance à la corrosion et une excellente résistance à la chaleur, pièce formée à la presse à chaud et procédé de fabrication associé Download PDF

Info

Publication number
EP3889314A4
EP3889314A4 EP19891044.0A EP19891044A EP3889314A4 EP 3889314 A4 EP3889314 A4 EP 3889314A4 EP 19891044 A EP19891044 A EP 19891044A EP 3889314 A4 EP3889314 A4 EP 3889314A4
Authority
EP
European Patent Office
Prior art keywords
hot press
steel sheet
manufacturing process
plated steel
excellent corrosion
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
EP19891044.0A
Other languages
German (de)
English (en)
Other versions
EP3889314A1 (fr
Inventor
Seong-Woo Kim
Jin-Keun Oh
Sang-Heon Kim
Yeol-Rae Cho
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.)
Posco Holdings Inc
Original Assignee
Posco 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 Posco Co Ltd filed Critical Posco Co Ltd
Priority claimed from PCT/KR2019/016761 external-priority patent/WO2020111879A1/fr
Publication of EP3889314A1 publication Critical patent/EP3889314A1/fr
Publication of EP3889314A4 publication Critical patent/EP3889314A4/fr
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C28/00Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/02Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material
    • C23C28/021Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material including at least one metal alloy layer
    • 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
    • C21D1/78Combined heat-treatments not provided for above
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C30/00Alloys containing less than 50% by weight of each constituent
    • 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
    • C22C38/14Ferrous alloys, e.g. steel alloys containing 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
    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/04Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
    • C23C2/12Aluminium or alloys based thereon
    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/26After-treatment
    • C23C2/28Thermal after-treatment, e.g. treatment in oil bath
    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/26After-treatment
    • C23C2/28Thermal after-treatment, e.g. treatment in oil bath
    • C23C2/29Cooling or quenching
    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/34Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
    • C23C2/36Elongated material
    • C23C2/40Plates; Strips
    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C28/00Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/02Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material
    • C23C28/027Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material including at least one metal matrix material comprising a mixture of at least two metals or metal phases or metal matrix composites, e.g. metal matrix with embedded inorganic hard particles, CERMET, MMC.
    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C28/00Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/02Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material
    • C23C28/028Including graded layers in composition or in physical properties, e.g. density, porosity, grain size
    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C30/00Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Composite Materials (AREA)
  • Inorganic Chemistry (AREA)
  • Coating With Molten Metal (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
EP19891044.0A 2018-11-30 2019-11-29 Tôle d'acier plaquée avec un alliage d'al-fe pour formage à la presse à chaud présentant une excellente résistance à la corrosion et une excellente résistance à la chaleur, pièce formée à la presse à chaud et procédé de fabrication associé Pending EP3889314A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR20180152574 2018-11-30
PCT/KR2019/016761 WO2020111879A1 (fr) 2018-11-30 2019-11-29 Tôle d'acier plaquée avec un alliage d'al-fe pour formage à la presse à chaud présentant une excellente résistance à la corrosion et une excellente résistance à la chaleur, pièce formée à la presse à chaud et procédé de fabrication associé

Publications (2)

Publication Number Publication Date
EP3889314A1 EP3889314A1 (fr) 2021-10-06
EP3889314A4 true EP3889314A4 (fr) 2021-11-10

Family

ID=71082084

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19891044.0A Pending EP3889314A4 (fr) 2018-11-30 2019-11-29 Tôle d'acier plaquée avec un alliage d'al-fe pour formage à la presse à chaud présentant une excellente résistance à la corrosion et une excellente résistance à la chaleur, pièce formée à la presse à chaud et procédé de fabrication associé

Country Status (3)

Country Link
EP (1) EP3889314A4 (fr)
KR (2) KR102264726B1 (fr)
CN (2) CN120464954A (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102227111B1 (ko) * 2018-11-30 2021-03-12 주식회사 포스코 열간성형 부재 및 그 제조방법
KR102928173B1 (ko) 2022-06-13 2026-02-19 주식회사 엔디소프트 화자분할 기술이 적용된 앱을 이용한 단말기 음성 대화 방법

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3239337A1 (fr) * 2014-12-24 2017-11-01 Posco Élément de moulage hpf présentant une excellente résistance au délaminage et son procédé de fabrication
KR20180074292A (ko) * 2016-12-23 2018-07-03 주식회사 포스코 TWB 용접 특성이 우수한 열간성형용 Al-Fe 합금화 도금강판, 열간성형 부재 및 그들의 제조방법
EP3396010A1 (fr) * 2015-12-23 2018-10-31 Posco Tôle en acier revêtue d'alliage d'aluminium-fer pour formage par pressage à chaud, ayant d'excellentes résistance à la facture retardée par hydrogène, résistance au pelage et soudabilité et élément formé à chaud au moyen de celle-ci

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2780984B1 (fr) 1998-07-09 2001-06-22 Lorraine Laminage Tole d'acier laminee a chaud et a froid revetue et comportant une tres haute resistance apres traitement thermique
JP4453853B2 (ja) * 2000-02-22 2010-04-21 日新製鋼株式会社 加工性,耐熱性,耐酸化性に優れた溶融アルミめっき系鋼板の製造方法
JP4325442B2 (ja) * 2004-03-12 2009-09-02 住友金属工業株式会社 溶融亜鉛系めっき鋼材の製造方法
KR100851163B1 (ko) * 2006-12-29 2008-08-08 주식회사 포스코 도금부착성 및 굽힘가공성이 우수한 초고강도 강판 및 이를이용한 합금화 용융아연도금강판의 제조방법
KR20120041544A (ko) * 2010-10-21 2012-05-02 주식회사 포스코 도금성, 도금밀착성 및 스폿용접성이 우수한 용융아연도금강판 및 그 제조방법
KR101220708B1 (ko) * 2010-12-27 2013-01-09 주식회사 포스코 내파우더링성이 우수한 고망간 고알루미늄 합금화 용융아연도금강판 및 그 제조방법
WO2013002575A2 (fr) * 2011-06-28 2013-01-03 주식회사 포스코 Tôle d'acier plaqué dotée d'une couche métallisée pourvue d'une excellente stabilité pour le pressage à chaud
JP6296805B2 (ja) 2014-01-23 2018-03-20 Ai Technology株式会社 検知装置
KR101569509B1 (ko) * 2014-12-24 2015-11-17 주식회사 포스코 프레스성형시 내파우더링성이 우수한 hpf 성형부재 및 이의 제조방법
KR101696069B1 (ko) * 2015-05-26 2017-01-13 주식회사 포스코 내박리성이 우수한 hpf 성형부재 및 그 제조방법
CN108588612B (zh) * 2018-04-28 2019-09-20 育材堂(苏州)材料科技有限公司 热冲压成形构件、热冲压成形用预涂镀钢板及热冲压成形工艺

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3239337A1 (fr) * 2014-12-24 2017-11-01 Posco Élément de moulage hpf présentant une excellente résistance au délaminage et son procédé de fabrication
EP3396010A1 (fr) * 2015-12-23 2018-10-31 Posco Tôle en acier revêtue d'alliage d'aluminium-fer pour formage par pressage à chaud, ayant d'excellentes résistance à la facture retardée par hydrogène, résistance au pelage et soudabilité et élément formé à chaud au moyen de celle-ci
KR20180074292A (ko) * 2016-12-23 2018-07-03 주식회사 포스코 TWB 용접 특성이 우수한 열간성형용 Al-Fe 합금화 도금강판, 열간성형 부재 및 그들의 제조방법

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2020111879A1 *

Also Published As

Publication number Publication date
CN120464954A (zh) 2025-08-12
CN113166913A (zh) 2021-07-23
KR20200066240A (ko) 2020-06-09
KR102450998B1 (ko) 2022-10-07
KR20210070967A (ko) 2021-06-15
EP3889314A1 (fr) 2021-10-06
KR102264726B1 (ko) 2021-06-16
CN113166913B (zh) 2023-12-29

Similar Documents

Publication Publication Date Title
EP3805421A4 (fr) Tôle d'acier plaquée d'alliage al-fe destinée à un formage à chaud, présentant d'excellentes caractéristiques de soudage twb, élément de formage à chaud et procédés de fabrication s'y rapportant
EP3632585A4 (fr) Tôle d'acier pour élément formé à la presse à chaud présentant une excellente résistance à la fracture retardée par l'hydrogène, et son procédé de fabrication
EP3889312A4 (fr) Tôle d'acier plaquée avec al-fe pour formage à la presse à chaud ayant une excellente résistance à la corrosion et une excellente soudabilité par points, et son procédé de fabrication
MA50881A (fr) Procédé de fabrication d'une ébauche en acier soudée à l'aide d'un fil d'apport présentant une teneur en carbone définie, ébauche soudée associée, procédé de fabrication d'une pièce soudée avec pièce en acier formée par pressage à chaud et refroidie et pièce associée
EP3530768A4 (fr) Tôle d'acier plaquée, procédé de fabrication d'une tôle d'acier galvanisée à chaud, et procédé de fabrication de tôle d'acier allié galvanisée à chaud
EP3901315A4 (fr) Tôle d'acier plaquée destinée au formage à la presse à chaud présentant d'excellentes propriétés de résistance aux chocs après formage à la presse à chaud, élément formé à la presse à chaud, et procédés de fabrication associés
EP3859041A4 (fr) Tôle d'acier laminée à froid à haute résistance ayant un rapport d'expansion de trou élevé, tôle d'acier galvanisée à chaud par trempe à haute résistance, et procédés de fabrication associés
EP4079922A4 (fr) Tôle d'acier en alliage d'aluminium, élément formé à chaud et procédés de fabrication de la tôle d'acier en alliage d'aluminium et de l'élément formé à chaud
MA49658A (fr) Feuille d'acier laminée à chaud et revêtue pour formage à chaud, pièce d'acier formée à chaud et revêtue et leurs procédés de fabrication
EP3556896A4 (fr) Tôle d'acier laminée à froid à haute résistance présentant une excellente limite d'élasticité, une excellente ductilité et une excellente capacité d'expansion de trou, tôle d'acier galvanisée par immersion à chaud et procédé de production associé
EP3517636A4 (fr) Tôle d'acier laminée à froid pour un formage à chaud, présentant d'excellentes propriétés de résistance à la corrosion et de soudabilité par points, élément formé à chaud, et son procédé de fabrication
EP3859045A4 (fr) Tôle d'acier plaquée à résistance à la corrosion élevée, pourvue d'une excellente adhérence de placage et d'une excellente résistance à la fragilisation par métal liquide
EP3845682A4 (fr) Tôle d'acier plaquée d'alliage d'aluminium et de zinc présentant une excellente aptitude au façonnage à chaud et une excellente résistance à la corrosion, et son procédé de fabrication
EP2138599A4 (fr) Tôle d'acier galvanisé à chaud au trempé, haute résistance et procédé pour la produire
EP3421633A4 (fr) Tôle d'acier mince, tôle d'acier plaquée, procédé de fabrication de tôle d'acier laminée à chaud, procédé de fabrication de tôle d'acier laminée à froid très dure, procédé de fabrication de tôle d'acier mince, et procédé de fabrication de tôle d'acier plaquée
EP3751016A4 (fr) Tôle d'acier plaquée zinc pour l'estampage à chaud et son procédé de production
EP3647445A4 (fr) Élément pressé à chaud et son procédé de fabrication, et tôle d'acier laminée à froid pour pressage à chaud et son procédé de fabrication
EP2128295A4 (fr) Tôle d'acier galvanisé à chaud, haute résistance, possédant une excellente aptitude au moulage, et son procédé de production
EP3647449A4 (fr) Élément pressé à chaud et son procédé de fabrication, et tôle d'acier laminée à froid pour pressage à chaud et son procédé de fabrication
EP3647448A4 (fr) Élément pressé à chaud et son procédé de fabrication, et tôle d'acier laminé à froid pour pressage à chaud et son procédé de fabrication
EP3889314A4 (fr) Tôle d'acier plaquée avec un alliage d'al-fe pour formage à la presse à chaud présentant une excellente résistance à la corrosion et une excellente résistance à la chaleur, pièce formée à la presse à chaud et procédé de fabrication associé
EP3647444A4 (fr) Élément de compression à chaud et son procédé de fabrication, et tôle d'acier laminée à froid pour compression à chaud et son procédé de fabrication
EP3561118A4 (fr) Tôle d'acier de résistance élevée ayant d'excellentes caractéristiques d'allongement à haute température, élément pressé à chaud, et procédés de fabrication pour ladite tôle et ledit élément
EP3556898A4 (fr) Procédé de production d'une tôle d'acier galvanisée par immersion à chaud ayant une excellente aptitude au formage à la presse et une excellente clarté de peinture, et tôle d'acier galvanisée par immersion à chaud ainsi produite
EP3831971A4 (fr) Tôle d'acier plaquée laminée à chaud à résistance élevée

Legal Events

Date Code Title Description
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: 20210623

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

A4 Supplementary search report drawn up and despatched

Effective date: 20211008

RIC1 Information provided on ipc code assigned before grant

Ipc: C23C 30/00 20060101ALI20211004BHEP

Ipc: C23C 28/02 20060101ALI20211004BHEP

Ipc: C21D 1/78 20060101ALI20211004BHEP

Ipc: C22C 30/00 20060101ALI20211004BHEP

Ipc: C22C 38/02 20060101ALI20211004BHEP

Ipc: C22C 38/06 20060101ALI20211004BHEP

Ipc: C22C 38/14 20060101ALI20211004BHEP

Ipc: C22C 38/18 20060101ALI20211004BHEP

Ipc: C23C 2/40 20060101ALI20211004BHEP

Ipc: C23C 2/12 20060101ALI20211004BHEP

Ipc: C23C 2/28 20060101AFI20211004BHEP

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
RAP3 Party data changed (applicant data changed or rights of an application transferred)

Owner name: POSCO HOLDINGS INC.

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: POSCO CO., LTD

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

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20241028

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

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

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20260309