EP3492616A4 - Fil d'acier à haute résistance - Google Patents

Fil d'acier à haute résistance Download PDF

Info

Publication number: EP3492616A4
Authority: EP; European Patent Office
Prior art keywords: steel wire; high strength; strength steel; wire; strength
Prior art date: 2016-07-29
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 Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Withdrawn

Application number

EP17834575.7A

Other languages

German (de)

English (en)

Other versions

EP3492616A1 (fr

Inventor

Makoto Okonogi

Naoki Matsui

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.)

Nippon Steel Corp

Original Assignee

Nippon Steel Corp

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.)

2016-07-29

Filing date

2017-07-28

Publication date

2020-01-08

2017-07-28 Application filed by Nippon Steel Corp filed Critical Nippon Steel Corp

2019-06-05 Publication of EP3492616A1 publication Critical patent/EP3492616A1/fr

2020-01-08 Publication of EP3492616A4 publication Critical patent/EP3492616A4/fr

Status Withdrawn legal-status Critical Current

Links

Classifications

- 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
- 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
- C21D9/52—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
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- 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
- C22C38/008—Ferrous alloys, e.g. steel alloys containing tin
- 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
- C22C38/06—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
- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
- 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
- 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
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
- 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
- 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
- C22C38/20—Ferrous alloys, e.g. steel alloys containing chromium with copper
- 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
- C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
- 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
- C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
- 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
- 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
- C22C38/34—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- 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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
- 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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
- 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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
- 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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel 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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel 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
- C21D2211/009—Pearlite

Landscapes

Chemical & Material Sciences (AREA)
Engineering & Computer Science (AREA)
Materials Engineering (AREA)
Mechanical Engineering (AREA)
Metallurgy (AREA)
Organic Chemistry (AREA)
Crystallography & Structural Chemistry (AREA)
Physics & Mathematics (AREA)
Thermal Sciences (AREA)
Manufacturing & Machinery (AREA)
Heat Treatment Of Steel (AREA)
Heat Treatment Of Strip Materials And Filament Materials (AREA)
Ropes Or Cables (AREA)

EP17834575.7A 2016-07-29 2017-07-28 Fil d'acier à haute résistance Withdrawn EP3492616A4 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
JP2016150584		2016-07-29
PCT/JP2017/027578 WO2018021574A1 (fr)	2016-07-29	2017-07-28	Fil d'acier à haute résistance

Publications (2)

Publication Number	Publication Date
EP3492616A1 EP3492616A1 (fr)	2019-06-05
EP3492616A4 true EP3492616A4 (fr)	2020-01-08

Family

ID=61016144

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP17834575.7A Withdrawn EP3492616A4 (fr)	2016-07-29	2017-07-28	Fil d'acier à haute résistance

Country Status (10)

Country	Link
US (1)	US20200354810A1 (fr)
EP (1)	EP3492616A4 (fr)
JP (1)	JP6893212B2 (fr)
KR (1)	KR20190021379A (fr)
CN (1)	CN109563577A (fr)
BR (1)	BR112019000924A2 (fr)
CA (1)	CA3031185A1 (fr)
MX (1)	MX2019000974A (fr)
MY (1)	MY197958A (fr)
WO (1)	WO2018021574A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JP5521885B2 (ja) *	2010-08-17	2014-06-18	新日鐵住金株式会社	高強度かつ耐水素脆化特性に優れた機械部品用鋼線、および機械部品とその製造方法
JP7226548B2 (ja)	2019-06-19	2023-02-21	日本製鉄株式会社	線材
JP7469642B2 (ja) *	2020-05-21	2024-04-17	日本製鉄株式会社	高強度鋼線
US11892048B2 (en)	2020-06-15	2024-02-06	Sumitomo Electric Industries, Ltd.	Spring steel wire
DE112020006794T5 (de)	2020-06-17	2023-01-05	Sumitomo Electric Industries, Ltd.	Federstahldraht
CN114075639A (zh) *	2020-08-20	2022-02-22	宝山钢铁股份有限公司	一种高强度高疲劳寿命缆索用钢、盘条及其制备方法
CN112458356B (zh) *	2020-10-15	2022-02-01	中天钢铁集团有限公司	一种1860MPa级桥梁缆索镀锌钢丝用φ14mm盘条及制备方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US20130133789A1 (en) *	2010-08-17	2013-05-30	Makoto Okonogi	Steel wire of special steel and wire rod of special steel
WO2015186801A1 (fr) *	2014-06-04	2015-12-10	新日鐵住金株式会社	Fil d'acier

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JP4267376B2 (ja)	2003-06-04	2009-05-27	新日本製鐵株式会社	遅れ破壊特性の優れた高強度ｐｃ鋼線およびその製造方法
JP5315790B2 (ja)	2008-05-19	2013-10-16	新日鐵住金株式会社	耐遅れ破壊特性に優れた高強度ｐｃ鋼線
CN101586208B (zh) *	2008-05-23	2011-05-11	宝山钢铁股份有限公司	2200MPa级超高强度热轧线材及其制造方法
JP5224009B2 (ja) *	2011-03-14	2013-07-03	新日鐵住金株式会社	鋼線材及びその製造方法
WO2013031640A1 (fr) *	2011-08-26	2013-03-07	新日鐵住金株式会社	Matériau de fil pour un composant de machine non raffiné ; fil d'acier pour un composant de machine non raffiné ; composant de machine non raffiné ; et procédé permettant de fabriquer un matériau de fil pour un composant de machine non raffiné, un fil d'acier pour un composant de machine non raffiné et un composant de machine non raffiné
CN105324503B (zh) *	2013-06-24	2017-03-15	新日铁住金株式会社	高碳钢线材及其制造方法
US10487379B2 (en) *	2014-08-08	2019-11-26	Nippon Steel Corporation	High-carbon steel wire rod with excellent wire drawability
JP6418976B2 (ja)	2015-02-19	2018-11-07	三井・ケマーズフロロプロダクツ株式会社	撥水性表面に非晶性フッ素樹脂塗膜を形成させた多層積層体

2017
- 2017-07-28 JP JP2018530444A patent/JP6893212B2/ja active Active
- 2017-07-28 US US16/320,459 patent/US20200354810A1/en not_active Abandoned
- 2017-07-28 WO PCT/JP2017/027578 patent/WO2018021574A1/fr not_active Ceased
- 2017-07-28 EP EP17834575.7A patent/EP3492616A4/fr not_active Withdrawn
- 2017-07-28 CA CA3031185A patent/CA3031185A1/fr not_active Abandoned
- 2017-07-28 MY MYPI2019000401A patent/MY197958A/en unknown
- 2017-07-28 MX MX2019000974A patent/MX2019000974A/es unknown
- 2017-07-28 BR BR112019000924-8A patent/BR112019000924A2/pt not_active Application Discontinuation
- 2017-07-28 CN CN201780043855.4A patent/CN109563577A/zh active Pending
- 2017-07-28 KR KR1020197002093A patent/KR20190021379A/ko not_active Ceased

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US20130133789A1 (en) *	2010-08-17	2013-05-30	Makoto Okonogi	Steel wire of special steel and wire rod of special steel
WO2015186801A1 (fr) *	2014-06-04	2015-12-10	新日鐵住金株式会社	Fil d'acier

Also Published As

Publication number	Publication date
US20200354810A1 (en)	2020-11-12
BR112019000924A2 (pt)	2019-04-30
KR20190021379A (ko)	2019-03-05
JP6893212B2 (ja)	2021-06-23
WO2018021574A1 (fr)	2018-02-01
MX2019000974A (es)	2019-07-04
JPWO2018021574A1 (ja)	2019-05-23
CA3031185A1 (fr)	2018-02-01
CN109563577A (zh)	2019-04-02
EP3492616A1 (fr)	2019-06-05
MY197958A (en)	2023-07-25

Legal Events

Date	Code	Title	Description
2018-02-03	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE
2019-05-03	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
2019-05-03	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE
2019-06-05	17P	Request for examination filed	Effective date: 20190221
2019-06-05	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
2019-06-05	AX	Request for extension of the european patent	Extension state: BA ME
2019-07-03	RAP1	Party data changed (applicant data changed or rights of an application transferred)	Owner name: NIPPON STEEL CORPORATION
2019-11-06	DAV	Request for validation of the european patent (deleted)
2019-11-06	DAX	Request for extension of the european patent (deleted)
2020-01-08	A4	Supplementary search report drawn up and despatched	Effective date: 20191205
2020-09-02	RIC1	Information provided on ipc code assigned before grant	Ipc: C21D 8/06 20060101ALI20200728BHEP Ipc: C22C 38/34 20060101ALI20200728BHEP Ipc: C22C 38/20 20060101ALI20200728BHEP Ipc: C22C 38/48 20060101ALI20200728BHEP Ipc: C22C 38/06 20060101ALI20200728BHEP Ipc: C22C 38/24 20060101ALI20200728BHEP Ipc: C22C 38/18 20060101ALI20200728BHEP Ipc: C22C 38/54 20060101ALI20200728BHEP Ipc: C22C 38/40 20060101ALI20200728BHEP Ipc: C22C 38/02 20060101ALI20200728BHEP Ipc: C21D 9/52 20060101ALI20200728BHEP Ipc: C22C 38/32 20060101ALI20200728BHEP Ipc: C22C 38/26 20060101ALI20200728BHEP Ipc: C22C 38/12 20060101ALI20200728BHEP Ipc: C22C 38/04 20060101AFI20200728BHEP Ipc: C22C 38/42 20060101ALI20200728BHEP Ipc: C22C 38/46 20060101ALI20200728BHEP Ipc: C22C 38/16 20060101ALI20200728BHEP Ipc: C22C 38/14 20060101ALI20200728BHEP Ipc: C22C 38/08 20060101ALI20200728BHEP
2020-09-14	GRAP	Despatch of communication of intention to grant a patent	Free format text: ORIGINAL CODE: EPIDOSNIGR1
2020-09-14	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: GRANT OF PATENT IS INTENDED
2020-10-14	INTG	Intention to grant announced	Effective date: 20200915
2020-10-14	RIN1	Information on inventor provided before grant (corrected)	Inventor name: OKONOGI, MAKOTO Inventor name: MATSUI, NAOKI
2021-06-04	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN
2021-07-07	18D	Application deemed to be withdrawn	Effective date: 20210126

Publication	Publication Date	Title
EP3647446A4 (fr)	2021-02-17	Fil d'acier à haute résistance
EP3492616A4 (fr)	2020-01-08	Fil d'acier à haute résistance
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EP3517643A4 (fr)	2020-03-04	Tôle d'acier
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EP3508602A4 (fr)	2020-04-01	Acier inoxydable austénitique
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EP3460088A4 (fr)	2020-03-11	Tôle d'acier
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EP3396002A4 (fr)	2019-08-14	Composant en acier
EP3342891A4 (fr)	2019-03-13	Tôle d'acier
EP3508599A4 (fr)	2019-08-28	Tôle d'acier à haute résistance et son procédé de fabrication
EP3502296A4 (fr)	2019-09-04	Tôle d'acier
EP3527682A4 (fr)	2020-03-11	Fil d'acier et fil d'acier revêtu
EP3480330A4 (fr)	2020-01-08	Acier inoxydable austénitique
EP3409810A4 (fr)	2019-07-31	Acier à ressorts