EP4424862A4 - Procédés de fabrication de fil machine pour forgeage à froid et partie de vis, ayant d'excellentes caractéristiques de forage - Google Patents

Procédés de fabrication de fil machine pour forgeage à froid et partie de vis, ayant d'excellentes caractéristiques de forage

Info

Publication number: EP4424862A4
Authority: EP; European Patent Office
Prior art keywords: produce; screw part; cold forging; rolled wire; drilling properties
Prior art date: 2021-12-16
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

EP22907909.0A

Other languages

German (de)

English (en)

Other versions

EP4424862A1 (fr

Inventor

Byungin Jung

Youngsoo Chun

Yongsik Park

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.)

2021-12-16

Filing date

2022-12-13

Publication date

2025-11-12

2022-12-13 Application filed by Posco Co Ltd filed Critical Posco Co Ltd

2024-09-04 Publication of EP4424862A1 publication Critical patent/EP4424862A1/fr

2025-11-12 Publication of EP4424862A4 publication Critical patent/EP4424862A4/fr

Status Pending legal-status Critical Current

Links

Classifications

- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
- 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
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/002—Heat treatment of ferrous alloys containing Cr
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/005—Heat treatment of ferrous alloys containing Mn
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/008—Heat treatment of ferrous alloys containing Si
- 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
- 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
- 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
- C22C38/02—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
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron
- 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
- C21D2211/002—Bainite
- 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
- 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
- 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
- C21D2211/009—Pearlite

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 Articles (AREA)
Heat Treatment Of Steel (AREA)

EP22907909.0A 2021-12-16 2022-12-13 Procédés de fabrication de fil machine pour forgeage à froid et partie de vis, ayant d'excellentes caractéristiques de forage Pending EP4424862A4 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
KR1020210180892A KR20230091619A (ko)	2021-12-16	2021-12-16	드릴링 특성이 우수한 냉간단조용 선재 및 스크류 부품의 제조방법
PCT/KR2022/020274 WO2023113442A1 (fr)	2021-12-16	2022-12-13	Procédés de fabrication de fil machine pour forgeage à froid et partie de vis, ayant d'excellentes caractéristiques de forage

Publications (2)

Publication Number	Publication Date
EP4424862A1 EP4424862A1 (fr)	2024-09-04
EP4424862A4 true EP4424862A4 (fr)	2025-11-12

Family

ID=86773086

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP22907909.0A Pending EP4424862A4 (fr)	2021-12-16	2022-12-13	Procédés de fabrication de fil machine pour forgeage à froid et partie de vis, ayant d'excellentes caractéristiques de forage

Country Status (6)

Country	Link
US (1)	US20250043376A1 (fr)
EP (1)	EP4424862A4 (fr)
JP (1)	JP2025500864A (fr)
KR (1)	KR20230091619A (fr)
CN (1)	CN118382715A (fr)
WO (1)	WO2023113442A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
KR20250091580A (ko) *	2023-12-14	2025-06-23	주식회사 포스코	풍력타워 체결용 선재, 볼트 및 이들의 제조방법
KR20250091916A (ko) *	2023-12-14	2025-06-23	주식회사 포스코	선재, 볼트 및 이들의 제조방법

Citations (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPH11293401A (ja) *	1998-02-10	1999-10-26	Kobe Steel Ltd	冷間加工性と耐遅れ破壊性に優れたｂ含有鋼およびその製造方法並びにボルト
KR20010060772A (ko) *	1999-12-28	2001-07-07	이구택	강도 및 인성이 우수한 비조질강 및 이를 이용한 선재의제조방법
JP2003183733A (ja) *	2001-12-14	2003-07-03	Sumitomo Metal Ind Ltd	線材の製造方法
WO2006088019A1 (fr) *	2005-02-16	2006-08-24	Nippon Steel Corporation	Matériau filaire laminé à chaud excellent en forgeage à froid après un traitement de sphéroïdisation, fil d’acier recuit par sphéroïdisation excellent en forgeage à froid, et procédé de fabrication idoine
EP2832875A1 (fr) *	2012-03-26	2015-02-04	Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)	Acier pour boulon à résistance élevée avec ajout de bore ayant une excellente résistance à la fracture différée et boulon à résistance élevée
US20180305787A1 (en) *	2015-12-17	2018-10-25	Posco	Non-heat treated wire rod excellent in strength and cold workability and method for manufacturing same
WO2021125793A1 (fr) *	2019-12-17	2021-06-24	주식회사 포스코	Fil-machine pour acier de qualité de frappe à froid à haute résistance présentant une excellente résistance à la fragilisation par l'hydrogène, et procédé de fabrication associé

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPH0713257B2 (ja) *	1990-05-30	1995-02-15	新日本製鐵株式会社	圧延ままで表面異常相のない軟質線材の製造方法
JP3966493B2 (ja)	1999-05-26	2007-08-29	新日本製鐵株式会社	冷間鍛造用線材及びその製造方法
JP2010138718A (ja) *	2008-12-09	2010-06-24	Ntn Corp	ラッシュアジャスタ
CN205625560U (zh) *	2016-04-21	2016-10-12	佛山市顺德区美的电热电器制造有限公司	螺杆及原汁机
KR102224044B1 (ko) *	2018-12-18	2021-03-09	주식회사 포스코	흑연화 열처리용 선재와 흑연강 및 그 제조방법

2021
- 2021-12-16 KR KR1020210180892A patent/KR20230091619A/ko active Pending
2022
- 2022-12-13 US US18/719,104 patent/US20250043376A1/en active Pending
- 2022-12-13 EP EP22907909.0A patent/EP4424862A4/fr active Pending
- 2022-12-13 WO PCT/KR2022/020274 patent/WO2023113442A1/fr not_active Ceased
- 2022-12-13 CN CN202280082388.7A patent/CN118382715A/zh active Pending
- 2022-12-13 JP JP2024535603A patent/JP2025500864A/ja active Pending

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPH11293401A (ja) *	1998-02-10	1999-10-26	Kobe Steel Ltd	冷間加工性と耐遅れ破壊性に優れたｂ含有鋼およびその製造方法並びにボルト
KR20010060772A (ko) *	1999-12-28	2001-07-07	이구택	강도 및 인성이 우수한 비조질강 및 이를 이용한 선재의제조방법
JP2003183733A (ja) *	2001-12-14	2003-07-03	Sumitomo Metal Ind Ltd	線材の製造方法
WO2006088019A1 (fr) *	2005-02-16	2006-08-24	Nippon Steel Corporation	Matériau filaire laminé à chaud excellent en forgeage à froid après un traitement de sphéroïdisation, fil d’acier recuit par sphéroïdisation excellent en forgeage à froid, et procédé de fabrication idoine
EP2832875A1 (fr) *	2012-03-26	2015-02-04	Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)	Acier pour boulon à résistance élevée avec ajout de bore ayant une excellente résistance à la fracture différée et boulon à résistance élevée
US20180305787A1 (en) *	2015-12-17	2018-10-25	Posco	Non-heat treated wire rod excellent in strength and cold workability and method for manufacturing same
WO2021125793A1 (fr) *	2019-12-17	2021-06-24	주식회사 포스코	Fil-machine pour acier de qualité de frappe à froid à haute résistance présentant une excellente résistance à la fragilisation par l'hydrogène, et procédé de fabrication associé
EP4079907A1 (fr) *	2019-12-17	2022-10-26	Posco	Fil-machine pour acier de qualité de frappe à froid à haute résistance présentant une excellente résistance à la fragilisation par l'hydrogène, et procédé de fabrication associé

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2023113442A1 *

Also Published As

Publication number	Publication date
EP4424862A1 (fr)	2024-09-04
WO2023113442A1 (fr)	2023-06-22
JP2025500864A (ja)	2025-01-15
CN118382715A (zh)	2024-07-23
KR20230091619A (ko)	2023-06-23
US20250043376A1 (en)	2025-02-06

Legal Events

Date	Code	Title	Description
2023-06-24	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE
2024-08-02	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
2024-08-02	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE
2024-09-04	17P	Request for examination filed	Effective date: 20240531
2024-09-04	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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR
2025-03-26	DAV	Request for validation of the european patent (deleted)
2025-03-26	DAX	Request for extension of the european patent (deleted)
2025-11-12	A4	Supplementary search report drawn up and despatched	Effective date: 20251010
2025-11-12	RIC1	Information provided on ipc code assigned before grant	Ipc: C22C 38/28 20060101AFI20251006BHEP Ipc: C22C 38/32 20060101ALI20251006BHEP Ipc: C22C 38/00 20060101ALI20251006BHEP Ipc: B21B 1/16 20060101ALI20251006BHEP Ipc: C21D 9/52 20060101ALI20251006BHEP Ipc: C21D 1/18 20060101ALI20251006BHEP Ipc: C21D 1/84 20060101ALI20251006BHEP

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