EP4144459A4 - Method for reducing surface cracks of casting blank by using ferrite phase - Google Patents

Method for reducing surface cracks of casting blank by using ferrite phase Download PDF

Info

Publication number
EP4144459A4
EP4144459A4 EP21829482.5A EP21829482A EP4144459A4 EP 4144459 A4 EP4144459 A4 EP 4144459A4 EP 21829482 A EP21829482 A EP 21829482A EP 4144459 A4 EP4144459 A4 EP 4144459A4
Authority
EP
European Patent Office
Prior art keywords
ferrite phase
casting blank
surface cracks
reducing surface
cracks
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.)
Granted
Application number
EP21829482.5A
Other languages
German (de)
French (fr)
Other versions
EP4144459B1 (en
EP4144459A1 (en
Inventor
Yingchun Wang
Guodong Xu
Rongjun Xu
Zhengjie FAN
Xiaoming RUAN
Yan Wang
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.)
Baoshan Iron and Steel Co Ltd
Original Assignee
Baoshan Iron and Steel 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 Baoshan Iron and Steel Co Ltd filed Critical Baoshan Iron and Steel Co Ltd
Publication of EP4144459A1 publication Critical patent/EP4144459A1/en
Publication of EP4144459A4 publication Critical patent/EP4144459A4/en
Application granted granted Critical
Publication of EP4144459B1 publication Critical patent/EP4144459B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/16—Controlling or regulating processes or operations
    • B22D11/22—Controlling or regulating processes or operations for cooling cast stock or mould
    • B22D11/225—Controlling or regulating processes or operations for cooling cast stock or mould for secondary cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/124—Accessories for subsequent treating or working cast stock in situ for cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/124—Accessories for subsequent treating or working cast stock in situ for cooling
    • B22D11/1246—Nozzles; Spray heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
    • B22D11/1287—Rolls; Lubricating, cooling or heating rolls while in use
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/84—Controlled slow cooling
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0081—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for slabs; for billets
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
    • C21D1/60—Aqueous agents
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/62—Quenching devices
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/62—Quenching devices
    • C21D1/667—Quenching devices for spray quenching
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING 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
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/005—Ferrite

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Continuous Casting (AREA)
EP21829482.5A 2020-06-25 2021-06-25 Method for reducing surface cracks of casting blank by using ferrite phase Active EP4144459B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202010592850.0A CN113843403B (en) 2020-06-25 2020-06-25 Method for improving surface cracks of casting blank by using ferrite phase
PCT/CN2021/102405 WO2021259376A1 (en) 2020-06-25 2021-06-25 Method for reducing surface cracks of casting blank by using ferrite phase

Publications (3)

Publication Number Publication Date
EP4144459A1 EP4144459A1 (en) 2023-03-08
EP4144459A4 true EP4144459A4 (en) 2023-08-30
EP4144459B1 EP4144459B1 (en) 2024-10-02

Family

ID=78972051

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21829482.5A Active EP4144459B1 (en) 2020-06-25 2021-06-25 Method for reducing surface cracks of casting blank by using ferrite phase

Country Status (5)

Country Link
EP (1) EP4144459B1 (en)
JP (1) JP2023530911A (en)
KR (1) KR20230015949A (en)
CN (1) CN113843403B (en)
WO (1) WO2021259376A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114672628B (en) * 2022-03-30 2023-03-14 东北大学 Slab surface quenching system and process based on continuous casting machine tail end
CN114734014B (en) * 2022-03-31 2024-01-19 东北大学 Cooling method and system for controlling crack at corner of microalloy steel plate blank
CN114850423B (en) * 2022-05-21 2023-05-23 湖南华菱湘潭钢铁有限公司 Control method for corner cracks of medium-carbon manganese steel continuous casting bloom

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012176436A (en) * 2011-01-31 2012-09-13 Jfe Steel Corp Continuous casting method of steel
CN102861890A (en) * 2012-09-19 2013-01-09 中冶南方工程技术有限公司 Secondary cooling method for reducing transverse cracks of corners of microalloy sheet billet
US20180363088A1 (en) * 2015-08-11 2018-12-20 Jfe Steel Corporation Material for high strength steel sheets, hot rolled material for high strength steel sheets, hot-rolled and annealed material for high strength steel sheets, high strength steel sheet, high strength hot-dip-coated steel sheet, high strength electroplated steel sheet, and method of manufacturing same

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3058079B2 (en) * 1996-02-23 2000-07-04 住友金属工業株式会社 Steel continuous casting method
JP2010082638A (en) * 2008-09-30 2010-04-15 Jfe Steel Corp Method for producing continuously cast slab
CN101722287B (en) * 2008-11-03 2012-07-18 攀钢集团研究院有限公司 Method for cooling continuous casting blanks and method for producing continuous casting billets comprising same
JP5381468B2 (en) * 2009-07-30 2014-01-08 新日鐵住金株式会社 Secondary cooling method in continuous casting machine
CN102228968B (en) * 2011-06-20 2014-01-22 重庆大学 Method for implementing direct conveying and charging of high-strength low alloy steel continuously-cast slab
JP5920192B2 (en) * 2012-03-01 2016-05-18 Ｊｆｅスチール株式会社 Steel continuous casting method
CN104399923B (en) * 2014-11-18 2016-07-06 钢铁研究总院 A kind of method producing special heavy plate continuous casting billet
CN105478704B (en) 2016-01-04 2018-03-23 河北钢铁股份有限公司邯郸分公司 Prevent the system and its application method of micro alloyed steel strand continuous casting chink defect
CN108393456B (en) * 2017-02-05 2019-10-29 鞍钢股份有限公司 Q345B thick plate casting blank structure control method
CN107695313B (en) 2017-08-22 2019-10-11 中冶连铸技术工程有限责任公司 A kind of method and arrangement of nozzles method solving slab Corner Crackss
CN110756756B (en) * 2019-10-10 2021-06-01 山东钢铁股份有限公司 Method for reducing generation rate of cracks on surface of hot-delivery casting blank
CN110653352A (en) 2019-11-06 2020-01-07 湖南华菱湘潭钢铁有限公司 Method for controlling surface crack of casting blank initiated by proeutectoid ferrite

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012176436A (en) * 2011-01-31 2012-09-13 Jfe Steel Corp Continuous casting method of steel
CN102861890A (en) * 2012-09-19 2013-01-09 中冶南方工程技术有限公司 Secondary cooling method for reducing transverse cracks of corners of microalloy sheet billet
US20180363088A1 (en) * 2015-08-11 2018-12-20 Jfe Steel Corporation Material for high strength steel sheets, hot rolled material for high strength steel sheets, hot-rolled and annealed material for high strength steel sheets, high strength steel sheet, high strength hot-dip-coated steel sheet, high strength electroplated steel sheet, and method of manufacturing same

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2021259376A1 *

Also Published As

Publication number Publication date
KR20230015949A (en) 2023-01-31
CN113843403B (en) 2023-01-20
CN113843403A (en) 2021-12-28
EP4144459B1 (en) 2024-10-02
EP4144459A1 (en) 2023-03-08
WO2021259376A1 (en) 2021-12-30
JP2023530911A (en) 2023-07-20

Similar Documents

Publication Publication Date Title
EP4144459A4 (en) Method for reducing surface cracks of casting blank by using ferrite phase
GB2587066B (en) Method for compensating gain flatness of transceiver
EP3953157A4 (en) Method of 3d printing shapes defined by surface equations
EP4100255A4 (en) Method of printing
EP3831205A4 (en) Method of controlling soybean rust fungus that is resistant to qo inhibitors
EP4015656A4 (en) Method for producing ultra-low-temperature high-strength acid-resistant container steel by means of casting blank
EP4159879A4 (en) Method for producing reduced iron
EP3960888A4 (en) Method for producing grain-oriented electromagnetic steel sheet
EP3960887A4 (en) Method for producing grain-oriented electromagnetic steel sheet
EP3913108A4 (en) Method for producing grain-oriented electromagnetic steel sheet
EP4116314A4 (en) Method for preparing 16alpha-hydroxyprednisolone
EP4140992A4 (en) Method for preparing s-nicotine
EP3909703A4 (en) Method for continuous casting of slab
EP3957756A4 (en) Method for producing chromium-containing molten iron
EP4209280A4 (en) Method of pattern formation
EP4151754A4 (en) Method for producing reduced iron
EP4079468A4 (en) Method for controlling following of curved surface by robot
EP4096662A4 (en) Process for preparation of lasmiditan
EP4163280A4 (en) Method for producing heterocyclic compound
EP4130020A4 (en) Novel method for preparing inotodiol
EP4032990A4 (en) Method for producing molten steel
EP4122938A4 (en) Production method for transition metal compound
EP4141131A4 (en) Facility and method for production of direct reduced iron
EP3988663A4 (en) Production method of (r)-reticulin
AU2023901896A0 (en) Method for Production of Concrete

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: 20221128

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

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

Free format text: STATUS: EXAMINATION IS IN PROGRESS

A4 Supplementary search report drawn up and despatched

Effective date: 20230802

RIC1 Information provided on ipc code assigned before grant

Ipc: C21D 1/84 20060101ALI20230727BHEP

Ipc: B22D 11/128 20060101ALI20230727BHEP

Ipc: B22D 11/124 20060101ALI20230727BHEP

Ipc: B22D 11/22 20060101AFI20230727BHEP

17Q First examination report despatched

Effective date: 20230814

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

RIC1 Information provided on ipc code assigned before grant

Ipc: C21D 1/667 20060101ALN20240516BHEP

Ipc: C21D 1/62 20060101ALN20240516BHEP

Ipc: C21D 1/60 20060101ALN20240516BHEP

Ipc: C21D 9/00 20060101ALI20240516BHEP

Ipc: C21D 1/84 20060101ALI20240516BHEP

Ipc: B22D 11/128 20060101ALI20240516BHEP

Ipc: B22D 11/124 20060101ALI20240516BHEP

Ipc: B22D 11/22 20060101AFI20240516BHEP

RIC1 Information provided on ipc code assigned before grant

Ipc: C21D 1/667 20060101ALN20240517BHEP

Ipc: C21D 1/62 20060101ALN20240517BHEP

Ipc: C21D 1/60 20060101ALN20240517BHEP

Ipc: C21D 9/00 20060101ALI20240517BHEP

Ipc: C21D 1/84 20060101ALI20240517BHEP

Ipc: B22D 11/128 20060101ALI20240517BHEP

Ipc: B22D 11/124 20060101ALI20240517BHEP

Ipc: B22D 11/22 20060101AFI20240517BHEP

INTG Intention to grant announced

Effective date: 20240607

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

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

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

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: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602021019703

Country of ref document: DE