EP4265766A4 - Wire rod and parts with improved resistance to delayed fracture and method for producing the same - Google Patents

Wire rod and parts with improved resistance to delayed fracture and method for producing the same

Info

Publication number
EP4265766A4
EP4265766A4 EP21907056.2A EP21907056A EP4265766A4 EP 4265766 A4 EP4265766 A4 EP 4265766A4 EP 21907056 A EP21907056 A EP 21907056A EP 4265766 A4 EP4265766 A4 EP 4265766A4
Authority
EP
European Patent Office
Prior art keywords
producing
parts
same
wire rod
improved resistance
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
EP21907056.2A
Other languages
German (de)
French (fr)
Other versions
EP4265766A1 (en
Inventor
Youngsoo Chun
Sang-Yoon Lee
Seok-Hwan Choi
Myungsoo Choi
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
Publication of EP4265766A1 publication Critical patent/EP4265766A1/en
Publication of EP4265766A4 publication Critical patent/EP4265766A4/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • C21D1/25—Hardening, combined with annealing between 300 degrees Celsius and 600 degrees Celsius, i.e. heat refining ("Vergüten")
    • 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
    • C21D1/26—Methods of annealing
    • C21D1/32—Soft annealing, e.g. spheroidising
    • 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
    • C21D8/00—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/06—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
    • 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
    • C21D9/0093—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for screws; for bolts
    • 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
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • 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
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/525—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length for wire, for rods
    • 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
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • 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
    • C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
    • 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
    • C21D2211/001—Austenite
    • 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
    • C21D2211/008—Martensite

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Heat Treatment Of Steel (AREA)
  • Heat Treatment Of Articles (AREA)
EP21907056.2A 2020-12-18 2021-12-14 Wire rod and parts with improved resistance to delayed fracture and method for producing the same Pending EP4265766A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020200178274A KR102492644B1 (en) 2020-12-18 2020-12-18 Wire rod and parts with improved delayed fracture resisitance and method for manufacturing the same
PCT/KR2021/018977 WO2022131752A1 (en) 2020-12-18 2021-12-14 Wire rod and parts with improved delayed fracture resistance, and methods for manufacturing same

Publications (2)

Publication Number Publication Date
EP4265766A1 EP4265766A1 (en) 2023-10-25
EP4265766A4 true EP4265766A4 (en) 2025-10-01

Family

ID=82059247

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21907056.2A Pending EP4265766A4 (en) 2020-12-18 2021-12-14 Wire rod and parts with improved resistance to delayed fracture and method for producing the same

Country Status (6)

Country Link
US (1) US20240060162A1 (en)
EP (1) EP4265766A4 (en)
JP (2) JP2024500152A (en)
KR (1) KR102492644B1 (en)
CN (1) CN116783316A (en)
WO (1) WO2022131752A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005133152A (en) * 2003-10-30 2005-05-26 Kobe Steel Ltd High-strength wire rod to be induction-hardened superior in cold workability and impact resistance, and steel component using the wire rod
KR20100076743A (en) * 2008-12-26 2010-07-06 주식회사 포스코 High strength steel plate with excellent resistance of cyclic pressure for low-temperature pressure vessel, manufacturing method thereof and manufacturing method of deep drawing article
WO2011108459A1 (en) * 2010-03-02 2011-09-09 新日本製鐵株式会社 Steel wire with excellent cold forging characteristics and manufacturing process thereof
EP2832875A1 (en) * 2012-03-26 2015-02-04 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) Boron-added high strength bolt steel having excellent delayed fracture resistance and high strength bolt
EP3252184A1 (en) * 2015-01-27 2017-12-06 Nippon Steel & Sumitomo Metal Corporation Rod material for non-tempered machine component, steel rod for non-tempered machine component, and non-tempered machine component

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1036940A (en) * 1996-07-19 1998-02-10 Kobe Steel Ltd High strength bolt steel excellent in delayed fracture resistance, and bolt
JP3535754B2 (en) * 1998-02-10 2004-06-07 株式会社神戸製鋼所 B-containing steel excellent in cold workability and delayed fracture resistance, its manufacturing method and bolt
JP3966493B2 (en) 1999-05-26 2007-08-29 新日本製鐵株式会社 Cold forging wire and method for producing the same
KR101033752B1 (en) * 2005-02-16 2011-05-09 신닛뽄세이테쯔 카부시키카이샤 Hot rolled wire rod having excellent cold forging after spheroidizing treatment, spheroidized annealed steel wire having excellent cold forging, and method for producing them
JP5776623B2 (en) * 2012-05-08 2015-09-09 新日鐵住金株式会社 Steel wire rods / bars with excellent cold workability and manufacturing method thereof
KR101665886B1 (en) 2015-09-04 2016-10-13 주식회사 포스코 Non-quenched and tempered steel having excellent cold workability and impact toughness and method for manufacturing same
CN107815594A (en) * 2017-11-12 2018-03-20 湖南华菱湘潭钢铁有限公司 A kind of production method of cold extrusion gear wire rod

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005133152A (en) * 2003-10-30 2005-05-26 Kobe Steel Ltd High-strength wire rod to be induction-hardened superior in cold workability and impact resistance, and steel component using the wire rod
KR20100076743A (en) * 2008-12-26 2010-07-06 주식회사 포스코 High strength steel plate with excellent resistance of cyclic pressure for low-temperature pressure vessel, manufacturing method thereof and manufacturing method of deep drawing article
WO2011108459A1 (en) * 2010-03-02 2011-09-09 新日本製鐵株式会社 Steel wire with excellent cold forging characteristics and manufacturing process thereof
EP2832875A1 (en) * 2012-03-26 2015-02-04 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) Boron-added high strength bolt steel having excellent delayed fracture resistance and high strength bolt
EP3252184A1 (en) * 2015-01-27 2017-12-06 Nippon Steel & Sumitomo Metal Corporation Rod material for non-tempered machine component, steel rod for non-tempered machine component, and non-tempered machine component

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2022131752A1 *

Also Published As

Publication number Publication date
WO2022131752A1 (en) 2022-06-23
KR102492644B1 (en) 2023-01-30
KR20220087847A (en) 2022-06-27
JP2025148485A (en) 2025-10-07
EP4265766A1 (en) 2023-10-25
CN116783316A (en) 2023-09-19
JP2024500152A (en) 2024-01-04
US20240060162A1 (en) 2024-02-22

Similar Documents

Publication Publication Date Title
EP3561116C0 (en) ALUMINUM ALLOY CLAD STEEL MATERIAL WITH EXCELLENT CORROSION RESISTANCE AND METHOD FOR MANUFACTURING THE SAME
EP4204015A4 (en) SYSTEMS AND METHODS FOR THE PRODUCTION OF RNA CONSTRUCTS WITH ENHANCED TRANSLATION AND STABILITY
EP3668501A4 (en) PAMOATE SALT OF MONOAMINE AGAINST PARKINSON, METHOD OF PREPARATION THEREOF AND USE
EP3387347A4 (en) INSULATING STRUCTURE WITH AN INSULATING ELEMENT AND METHOD OF MANUFACTURING THE SAME
EP4430018A4 (en) Biocarbon compositions with optimized composition parameters and methods for their production
EP4052591A4 (en) METHOD FOR PRODUCING TEMPE-CONTAINING SAUCE AND SAUCE PRODUCED THEREFROM
EP3565442A4 (en) CARPETS WITH IMPROVED DELAMINATION RESISTANCE AND LIQUID BARRIER PROPERTIES AND METHOD OF MANUFACTURING THEREOF
EP3575077A4 (en) METAL-RESIN COMPOSITE STRUCTURE AND METHOD FOR PRODUCING THE SAME
EP3739080C0 (en) AUSTENITIC HEAT RESISTANT ALLOY, METHOD OF PRODUCING THE SAME AND AUSTENITIC HEAT RESISTANT ALLOY MATERIAL
EP3947115A4 (en) VEHICLE WITH OVERALL VARIABLE LENGTH AND METHODS OF SELECTIVE LENGTHS
EP3678701A4 (en) THERAPEUTIC PROTEIN COMPOSITIONS AND METHOD FOR MANUFACTURING AND USING THEREOF
EP4082587C0 (en) BIOMATERIAL WITH STOMACH-DERIVED STEM CELLS AND METHOD FOR PRODUCING THEM
EP3927155C0 (en) FISHING LURE, MOLDABLE COMPOSITION FOR PRODUCING THE FISHING LURE AND METHOD FOR PRODUCING THE FISHING LURE
EP3798312A4 (en) NOVEL FRUCTOSE-4-EPIMERASE AND METHOD FOR MANUFACTURING TAGATOSE WITH IT
DE102008006553A8 (en) Plastic discs with electrically conductive structure and method for producing the same
EP4265766A4 (en) Wire rod and parts with improved resistance to delayed fracture and method for producing the same
EP4422691A4 (en) MODIFIED ALGINATES AND METHODS FOR THE PREPARATION AND USE THEREOF
EP3814126C0 (en) METHOD FOR PRODUCING COMPOSITES AND ARRANGEMENT FOR PRODUCING COMPOSITES
EP3776693C0 (en) Anode materials and methods for producing and using the same
EP4323362C0 (en) PROCESS FOR THE PREPARATION OF CARBANUCLEOSIDES WITH AMIDES
EP3559115A4 (en) COMPOSITION AND METHOD FOR PRODUCING THE COMPOSITION
EP3551687C0 (en) METHOD FOR PRODUCING A STABILIZER COMPOSITION AND STABILIZER COMPOSITION PRODUCED THEREFROM
EP4125369A4 (en) PONGAMIA PROTEIN PRODUCTS AND METHODS FOR THE PRODUCTION AND USE THEREOF
EP4155264A4 (en) COMPOSITION AND METHOD FOR THE PRODUCTION THEREOF
EP4265770A4 (en) Wire rod and part with improved resistance to delayed fracture for use in bolts and method for producing the same

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: 20230616

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: C22C0038000000

Ipc: C22C0038020000

A4 Supplementary search report drawn up and despatched

Effective date: 20250901

RIC1 Information provided on ipc code assigned before grant

Ipc: C22C 38/02 20060101AFI20250826BHEP

Ipc: C22C 38/04 20060101ALI20250826BHEP

Ipc: C22C 38/14 20060101ALI20250826BHEP

Ipc: C21D 9/52 20060101ALI20250826BHEP

Ipc: C21D 8/06 20060101ALI20250826BHEP