EP4227431A4 - V-N MICROALLOYED STEEL AND METHOD FOR PRODUCING A V-N MICROALLOYED CONTINUOUS CASTING BLANK WITHOUT SURFACE CRACKS - Google Patents

V-N MICROALLOYED STEEL AND METHOD FOR PRODUCING A V-N MICROALLOYED CONTINUOUS CASTING BLANK WITHOUT SURFACE CRACKS Download PDF

Info

Publication number
EP4227431A4
EP4227431A4 EP21847037.5A EP21847037A EP4227431A4 EP 4227431 A4 EP4227431 A4 EP 4227431A4 EP 21847037 A EP21847037 A EP 21847037A EP 4227431 A4 EP4227431 A4 EP 4227431A4
Authority
EP
European Patent Office
Prior art keywords
microalloyed
producing
continuous casting
casting blank
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.)
Pending
Application number
EP21847037.5A
Other languages
German (de)
French (fr)
Other versions
EP4227431A1 (en
Inventor
Zhongxue WANG
Xiaoxin HUO
Linxiu DU
Heng Ma
Aijiao CHEN
Chuanzhi DU
Wei NING
Yue Liu
Hongyan WU
Kang HE
Lifeng Zhao
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.)
Laiwu Steel Group Yinshan Section Steel Co Ltd
Original Assignee
Laiwu Steel Group Yinshan Section 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 Laiwu Steel Group Yinshan Section Steel Co Ltd filed Critical Laiwu Steel Group Yinshan Section Steel Co Ltd
Publication of EP4227431A1 publication Critical patent/EP4227431A1/en
Publication of EP4227431A4 publication Critical patent/EP4227431A4/en
Pending legal-status Critical Current

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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/30—Regulating or controlling the blowing
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/06—Deoxidising, e.g. killing
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/072—Treatment with gases
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/001—Ferrous alloys, e.g. steel alloys containing N
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • 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
    • B22D11/001—Continuous casting of metals, i.e. casting in indefinite lengths of specific alloys

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Continuous Casting (AREA)
EP21847037.5A 2020-09-18 2021-09-14 V-N MICROALLOYED STEEL AND METHOD FOR PRODUCING A V-N MICROALLOYED CONTINUOUS CASTING BLANK WITHOUT SURFACE CRACKS Pending EP4227431A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202010990234.0A CN111996466B (en) 2020-09-18 2020-09-18 V-N microalloyed steel and production method of V-N microalloyed continuous casting billet without surface cracks
PCT/CN2021/118337 WO2022017545A1 (en) 2020-09-18 2021-09-14 V-n microalloyed steel and method for producing v-n microalloyed and surface-crack-free continuous casting blank

Publications (2)

Publication Number Publication Date
EP4227431A1 EP4227431A1 (en) 2023-08-16
EP4227431A4 true EP4227431A4 (en) 2024-10-30

Family

ID=73475522

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21847037.5A Pending EP4227431A4 (en) 2020-09-18 2021-09-14 V-N MICROALLOYED STEEL AND METHOD FOR PRODUCING A V-N MICROALLOYED CONTINUOUS CASTING BLANK WITHOUT SURFACE CRACKS

Country Status (4)

Country Link
US (1) US20240327963A1 (en)
EP (1) EP4227431A4 (en)
CN (1) CN111996466B (en)
WO (1) WO2022017545A1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111996466B (en) * 2020-09-18 2021-09-17 莱芜钢铁集团银山型钢有限公司 V-N microalloyed steel and production method of V-N microalloyed continuous casting billet without surface cracks
CN114734014B (en) * 2022-03-31 2024-01-19 东北大学 A cooling method and system for corner crack control of microalloy steel slabs
CN114686750B (en) * 2022-04-02 2023-07-25 山东莱钢永锋钢铁有限公司 Production method for precisely controlling nitrogen content of vanadium-containing steel
CN114677366B (en) * 2022-04-19 2024-11-29 厦门汇利伟业科技有限公司 Intelligent argon blowing control method and terminal
CN115216687A (en) * 2022-06-14 2022-10-21 阳春新钢铁有限责任公司 A kind of 25MnSiVTi hot-rolled wire rod for PC steel bar and preparation method thereof
CN115338383B (en) * 2022-08-19 2023-12-01 建龙北满特殊钢有限责任公司 Control method for internal corner cracks of medium-carbon MnB steel bloom
CN116287969B (en) * 2022-09-08 2024-03-08 包头钢铁（集团）有限责任公司 Production method of low-crack-rate low-alloy high-strength steel special-shaped blank
CN115717222A (en) * 2022-11-16 2023-02-28 包头钢铁（集团）有限责任公司 Production method of steel for V-N alloying A350LF6 flange
CN116213668B (en) * 2023-01-19 2024-11-29 鞍钢股份有限公司 A method for controlling surface cracks in VN microalloyed steel continuous casting billets
CN116287564B (en) * 2023-02-06 2024-09-24 包头钢铁（集团）有限责任公司 Low-nitrogen smelting method for LF refining furnace
CN118600149B (en) * 2024-08-09 2024-11-01 山西建龙实业有限公司 A method for producing small-section aluminum-containing square billet by slag washing and direct-lifting technology

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3173782A (en) * 1962-06-13 1965-03-16 Bethlehem Steel Corp Vanadium nitrogen steel
GB1289373A (en) * 1969-07-16 1972-09-20
CN1405351A (en) * 2002-03-18 2003-03-26 安阳钢铁股份有限公司 High-strength low alloy steel micro alloying by using rich-nitrogen and vanadium-containing alloy and its smelting method

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1340418C (en) * 1989-08-18 1999-03-02 George E. Ruddle Method for manufacturing seamless tubulars using t-v-n microalloyed steels
JP4923650B2 (en) * 2006-03-20 2012-04-25 Ｊｆｅスチール株式会社 Method for preventing surface cracks in continuous cast slabs
CN103361552A (en) * 2012-03-30 2013-10-23 鞍钢股份有限公司 V-N microalloyed 460MPa thick plate and manufacturing method thereof
CN102864376B (en) * 2012-09-13 2014-04-23 莱芜钢铁集团有限公司 High-strength full-thread equal-strong resin bolting reinforcing bar and production method thereof
CN106086595A (en) * 2016-07-29 2016-11-09 中天钢铁集团有限公司 A kind of it is prevented effectively from the production technology that marine anchor chain round steel cracks
CN107866538B (en) * 2017-11-24 2020-06-19 南京钢铁股份有限公司 Continuous casting production method for square billet of vanadium-containing and nitrogen-containing microalloyed peritectic steel
CN109852891B (en) * 2017-11-30 2021-01-08 上海梅山钢铁股份有限公司 A kind of low carbon boron-containing steel continuous casting slab corner crack control method
CN111996466B (en) * 2020-09-18 2021-09-17 莱芜钢铁集团银山型钢有限公司 V-N microalloyed steel and production method of V-N microalloyed continuous casting billet without surface cracks

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3173782A (en) * 1962-06-13 1965-03-16 Bethlehem Steel Corp Vanadium nitrogen steel
GB1289373A (en) * 1969-07-16 1972-09-20
CN1405351A (en) * 2002-03-18 2003-03-26 安阳钢铁股份有限公司 High-strength low alloy steel micro alloying by using rich-nitrogen and vanadium-containing alloy and its smelting method

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
See also references of WO2022017545A1 *
YANG YINGDONG ET AL: "Effect of Nitrogen Content Control on Surface Cracks of S450J0-T Hot-rolled H-shaped steel", SHANGHAI JINSHU, vol. 40, no. 3, 31 May 2018 (2018-05-31), CN, pages 69 - 72, XP055889397, ISSN: 1001-7208 *

Also Published As

Publication number Publication date
EP4227431A1 (en) 2023-08-16
WO2022017545A1 (en) 2022-01-27
CN111996466A (en) 2020-11-27
CN111996466B (en) 2021-09-17
US20240327963A1 (en) 2024-10-03

Similar Documents

Publication Publication Date Title
EP4227431A4 (en) V-N MICROALLOYED STEEL AND METHOD FOR PRODUCING A V-N MICROALLOYED CONTINUOUS CASTING BLANK WITHOUT SURFACE CRACKS
EP4123039A4 (en) SEAMLESS STAINLESS STEEL PIPE AND METHOD FOR PRODUCING SEAMLESS STAINLESS STEEL PIPE
CN109396368B (en) Method for improving internal quality of high-carbon steel bloom continuous casting billet
CN103128237A (en) Extremely-thick slab caster and method for producing extremely-thick slabs thereof
EP4215627A4 (en) LOW-COST MELT PROCESS FOR POLAR-PURPOSE STEEL USING MOLTEN IRON WITH ULTRA-HIGH PHOSPHORUS CONTENT
CN105364042A (en) Method for controlling crystalline structure uniformity of large-section heavy rail steel cast blank
EP4223899A4 (en) STEEL SHEET AND METHOD FOR MANUFACTURING STEEL SHEET
EP3916024A4 (en) COMPOSITION FOR FORMING A HYDROGEL, HYDROGEL AND METHOD FOR PRODUCING A COMPOSITION FOR FORMING A HYDROGEL
CN104741560B (en) A kind of method reducing the transverse corner crack stricture of vagina of steel containing niobium
EP4119687A4 (en) STEEL MELTING PROCESS FOR ULTRA-THIN CARBORUNDUM WIRE
CN101456066A (en) A wedge-shaped billet online cutting method and equipment
CN1090805A (en) The manufacturing system of whole long rail
EP3992145A4 (en) METHOD FOR REMOVING PHOSPHORUS FROM A PHOSPHORUS-CONTAINING SUBSTANCE, METHOD FOR PRODUCING A STARTING MATERIAL FOR METAL Smelting OR A STARTING MATERIAL FOR METAL REFINING, AND METHOD FOR PRODUCING METAL
CN115635058A (en) Continuous casting machine capable of producing shaped billet and square billet and production method thereof
EP4350012A4 (en) METHOD FOR PROCESSING MOLTEN STEEL AND METHOD FOR PRODUCING STEEL
CN104084552B (en) A continuous casting method
CN112743052A (en) Slab crystallizer for solving casting blank narrow surface cracks and control method
CN202461456U (en) Tiled butt joint type ingot mold
CN201922005U (en) Continuous casting crystallizer capable of realizing uniform heat transfer in metal initial solidification areas
CN111069554B (en) Online thermal width adjusting method for continuous casting chamfering crystallizer
EP4339302A4 (en) PROCESS FOR REFINING MOLTEN STEEL
RU2724210C1 (en) Method of increasing mechanical properties of steel ab2-1 in direct laser growing of metal workpieces
CN202316935U (en) Continuous casting crystallizer
CN102699299B (en) Method for producing high-quality extra thick slab through complete gas atomization secondary cooling mode
CN109382490B (en) YQ450NQR 1B-shaped steel bloom surface quality control method

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: 20230710

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

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
REG Reference to a national code

Ref country code: DE

Ref legal event code: R079

Free format text: PREVIOUS MAIN CLASS: C22C0038120000

Ipc: C22C0038000000

A4 Supplementary search report drawn up and despatched

Effective date: 20241001

RIC1 Information provided on ipc code assigned before grant

Ipc: C21C 7/072 20060101ALN20240925BHEP

Ipc: C21C 7/06 20060101ALN20240925BHEP

Ipc: B22D 11/22 20060101ALI20240925BHEP

Ipc: B22D 11/00 20060101ALI20240925BHEP

Ipc: C22C 38/12 20060101ALI20240925BHEP

Ipc: C22C 38/04 20060101ALI20240925BHEP

Ipc: C22C 38/02 20060101ALI20240925BHEP

Ipc: C22C 38/00 20060101AFI20240925BHEP

RIN1 Information on inventor provided before grant (corrected)

Inventor name: YIN, XUNQIANG

Inventor name: ZHANG, QINGPU

Inventor name: HE, KANG

Inventor name: WU, HONGYAN

Inventor name: GAO, ZHIBIN

Inventor name: DU, CHUANZHI

Inventor name: SUN, ZHENGXU

Inventor name: ZHANG, PEI

Inventor name: MA, HENG

Inventor name: DU, LINXIU

Inventor name: HUO, XIAOXIN

Inventor name: WANG, ZHONGXUE

RIC1 Information provided on ipc code assigned before grant

Ipc: C22C 38/00 20060101AFI20260115BHEP

Ipc: C22C 38/02 20060101ALI20260115BHEP

Ipc: C22C 38/04 20060101ALI20260115BHEP

Ipc: C22C 38/12 20060101ALI20260115BHEP

Ipc: B22D 11/00 20060101ALI20260115BHEP

Ipc: B22D 11/22 20060101ALI20260115BHEP

Ipc: C21C 7/06 20060101ALN20260115BHEP

Ipc: C21C 7/072 20060101ALN20260115BHEP

RIC1 Information provided on ipc code assigned before grant

Ipc: C22C 38/00 20060101AFI20260206BHEP

Ipc: C22C 38/02 20060101ALI20260206BHEP

Ipc: C22C 38/04 20060101ALI20260206BHEP

Ipc: C22C 38/12 20060101ALI20260206BHEP

Ipc: B22D 11/00 20060101ALI20260206BHEP

Ipc: B22D 11/22 20060101ALI20260206BHEP

Ipc: C21C 7/06 20060101ALN20260206BHEP

Ipc: C21C 7/072 20060101ALN20260206BHEP