EP2655677B1 - Procédé et installation de fabrication en continu un fil d'acier - Google Patents

Procédé et installation de fabrication en continu un fil d'acier Download PDF

Info

Publication number
EP2655677B1
EP2655677B1 EP11815567.0A EP11815567A EP2655677B1 EP 2655677 B1 EP2655677 B1 EP 2655677B1 EP 11815567 A EP11815567 A EP 11815567A EP 2655677 B1 EP2655677 B1 EP 2655677B1
Authority
EP
European Patent Office
Prior art keywords
steel wire
steel
patenting
process according
section
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.)
Active
Application number
EP11815567.0A
Other languages
German (de)
English (en)
Other versions
EP2655677A1 (fr
Inventor
Simone Agresti
Federico CIANCIOSI
Andrea Pieralli
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.)
Bekaert NV SA
Original Assignee
Bekaert NV SA
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 Bekaert NV SA filed Critical Bekaert NV SA
Publication of EP2655677A1 publication Critical patent/EP2655677A1/fr
Application granted granted Critical
Publication of EP2655677B1 publication Critical patent/EP2655677B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • 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
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • C21D9/573—Continuous furnaces for strip or wire with cooling
    • C21D9/5732—Continuous furnaces for strip or wire with cooling of wires; of rods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/04—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of bars or wire
    • 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
    • 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
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/64—Patenting furnaces

Definitions

  • the present invention concerns a process and a plant for continuously manufacturing a steel wire, as well as such a steel wire and a cord formed with a plurality of such steel wires.
  • the steel wires or cords can be used as structural reinforcement elements in the manufacture of elastomeric materials, like for example semifinished products intended for manufacturing tyres, tubes, conveyor belts, driving belts and cables.
  • the steel wires can also be used for cutting materials.
  • a cord is typically made by cording a plurality of suitable steel wires.
  • the steel wires intended for manufacturing tyres comprise a steel core coated by at least one metal layer which provides for both protecting the underlying steel from corrosion and for providing a suitable adhesion of the metal wire or of the cord comprising said wire to the elastomeric material with which the wire or the cord are rubber coated, in addition to facilitating and improving the drawing process which the wire undergoes.
  • documents US6228188 , US7354493 , and US20090308503 refer to processes and systems for manufacturing highly resistant wires through heat treatment.
  • GB1549125 A , US3718024 A and FR 1409716 A disclose in general multi stage wire cooling at patenting.
  • the manufacture of steel wire typically provides a series of continuous machining and treatments, comprising at least: a first drawing, during which the steel wire is brought to a diameter that is suitable for the machining and for the subsequent treatments; austenitizing, during which the steel wire is heated to a temperature of 950-1100 °C and is kept at such a temperature for a period of time that is sufficient for the steel structure to entirely become austenite; a patenting, during which the steel wire is quickly cooled to about 550-600 °C and is kept at such a temperature for a period of time that is sufficient for the steel is kept at such a temperature for a period of time that is sufficient for the steel structure to become substantially pearlitic; a coating treatment, for example brassing, in which the steel wire is coated with metal or metal alloys for example with copper and zinc; a drawing, in which the diameter of the steel wire is reduced to the final desired value.
  • austenite to refer to steel with a substantially entirely austenitic structure, pearl
  • the desired phase transformation of the structure of the steel wire from austenite (solid solution of carbon in gamma iron) to pearlite (formed by lamellae of ferrite and of cementite) is indeed carried out as long as the initial cooling is quick enough, otherwise the austenite does not transform into pearlite but into bainite (acicular aggregate formed by ferrite and particles of cementite or complex carbides), which is a steel structure that is not desired, since it is not suitable for the subsequent drawing: by this it is meant that the mechanical characteristics of the steel wire after drawing are not optimal if the structure thereof comprises a considerable amount of bainite.
  • the Applicant has found that it is possible to keep the austenitic structure of the steel wire even when subjecting it to slow cooling, after being austenitized at high temperature.
  • the Applicant has thus found that it is possible to slowly lower the temperature of the steel wire, keeping its austenitic structure, and then quickly cool it in a simpler manner -thanks to the lower starting temperature- causing the desired transformation from austenite to pearlite, forming a wire which -once drawn-has excellent mechanical characteristics (for example high resistance, high elongation and high torsional and fatigue resistance).
  • the Applicant has found that pearlite forming the wire mainly has a lamellar microstructure rather than a fragmented microstructure and again that such a lamellar structure is fine; by the term "fine” it is meant to indicate a lamellar microstructure in which the spacing is lower than about 100 nm.
  • the Applicant has attributed to this fine lamellar pearlitic microstructure a greater capability of the wire of withstanding the subsequent drawing.
  • the invention concerns a process for manufacturing a steel wire according to claim 1.
  • the Applicant has been able to find that during the slow cooling, the steel wire substantially keeps its austenite structure unaltered; with the subsequent quick cooling, the steel wire is brought to the conditions wherein it can begin changing phase in which the austenitic structure is transformed into pearlitic structure.
  • the beginning of the change of state can also occur at a relatively low temperature, at the second predetermined temperature of (550-600 °C), i.e. at the ideal conditions for there to be the substantially total desired transformation into pearlite.
  • the invention concerns a plant for the production of steel wire according to claim 12.
  • Further aspects of the invention concern a steel wire obtained according to the process of the first aspect of the invention, a process for manufacturing a steel cord which uses such a steel wire and a steel cord obtained with such a process.
  • drawing the steel wire is carried out until the wire has a diameter of 0.1-0.6 mm.
  • the process comprises coating the steel wire with at least a metal or metal alloy layer.
  • such a coating of the steel wire is carried out in order to brass said steel wire.
  • the slow cooling is carried out in air.
  • air in the present description, it is meant a gaseous atmosphere which mainly comprises air, but it is not excluded for there to be other secondary gaseous substances, for example due to the machining previously carried out or that occur immediately after, or that come from the steel itself in those temperature conditions.
  • the slow cooling therefore, does not require a complex cooling system; it is sufficient to ensure an exchange of air that is suitable for taking away the heat necessary for the desired reduction of temperature.
  • the quick cooling can be carried out in molten lead bath.
  • This system makes it possible to obtain, in a relatively simple manner, the desired quick lowering of the temperature thanks to the thermal conductivity of lead and thanks to the possibility of suitably adjusting the temperature of molten lead.
  • the quick cooling is carried out by spraying cooling liquid. This system allows a better control of the temperature in the subsequent sections of the plant during the quick cooling.
  • the keeping of the wire at a predetermined temperature is carried out in molten lead bath.
  • This system makes it possible to take away, in a relatively simple manner, the great amount of heat necessary for the transformation of austenite into pearlite.
  • the keeping of the wire at a predetermined temperature is carried out by spraying cooling liquid.
  • This system allows the best control of the temperature during the keeping of the temperature during the phase change from austenite to pearlite, making it possible to keep track of the generated heat while the transformation is taking place.
  • the steel wire reaches a maximum temperature of 950°C. Indeed, it has been found that the presence of the subsequent slow cooling makes it possible to carry out the austenitization at a temperature that is slightly lower than what is commonly used; it is thought -without by this wishing to give an interpretation of the physical phenomena which can occur during the process according to the invention- that the austenitization can be completed during the slow cooling.
  • the steel wire reaches a maximum temperature of 930°C, even more preferably of 920°C. It has been found that with these temperatures the steel wire is substantially completely austenitic when the transformation of phase into pearlite starts. With this condition ensured, the advantage in terms of manufacturing costs which are obtained by reducing the temperature during austenitization, are evident.
  • the steel wire reaches a minimum temperature of about 740-760°C.
  • the steel wire reaches a minimum temperature of about 750°C.
  • the steel wire reaches a minimum temperature of 580-600 °C.
  • the coating of the steel wire comprises:
  • the drawing is a drawing in wet conditions.
  • the first subsection of the patenting section comprises a chamber in controlled atmosphere, passed through by the steel wire.
  • the second subsection of the patenting section comprises a molten lead bath, passed through by the steel wire.
  • the second subsection of the patenting section comprises a chamber with at least one sprayer, for spraying the steel wire with a cooling liquid spray.
  • the second subsection of the patenting section comprises a molten lead bath, passed through by the steel wire, followed by a chamber with at least one sprayer, for spraying the steel wire with a cooling liquid spray.
  • a plant 100 for manufacturing high resistance steel wire F comprises an inlet section 110 of the steel wire, an austenitizing section 120, a patenting section 130, a brassing section 140 and a drawing section 150.
  • the patenting section 130 comprises a first subsection 131 and a second subsection 135, separate and different from the first subsection 131.
  • the steel wire F is slow cooled to a first predetermined temperature ranged between 720 and 800 °C in a time period of 4-10 s.
  • the steel wire is quick cooled to a second predetermined temperature ranged between 550 and 600 °C in a time period of 0.5-2 s and then is kept substantially at said second predetermined temperature ranged between 550 and 600 °C for a time period of at least 3 s.
  • the expression “kept substantially at said second predetermined temperature” it is meant kept in a temperature range within about 30 °C or preferably 20°C, of the predetermined temperature. Such a temperature variation is connected to the exothermicity of the reaction of austenite-pearlite phase transformation which leads to the recalescence phenomenon, the increase tendency of the temperature of the wire during the phase transformation.
  • the first subsection 131 of the patenting section 130 comprises a controlled atmosphere chamber 132, passed through by the steel wire F.
  • the second subsection 135 of the patenting section 130 comprises a molten lead bath 136, passed through by the steel wire F.
  • the second subsection 235 of the patenting section 230 comprises a chamber 237 with at least a sprayer 238, for spraying the steel wire F with a cooling liquid spray.
  • the second subsection 335 of the patenting section 330 comprises a molten lead bath 336, passed through by the steel wire F, followed by a chamber 337 with at least one sprayer 338, for spraying the steel wire F with a cooling liquid spray.
  • the steel used is a steel containing 0.2%-1.0% of C (Carbon), preferably 0.6%-0.95% of C.
  • a process according to the invention provides: providing a steel wire F, having a diameter of 0.5-3.5 mm; its austenitization, at a temperature of 900-1000 °C; its patenting; its brassing; its drawing, to a diameter of 0.1-2 mm, preferably 0.1-0.6 mm.
  • patenting comprises slow cooling of the steel wire F at a temperature of 700-800 °C in a time period of 4-10 s; its quick cooling at a temperature of 550-600 °C in a time period of 0.5-2 s; keeping it at a temperature of 550-600 °C for a time period of at least 3 s.
  • the arrangement of the steel wire F occurs in the inlet section 110, its austenitization in the austenitizing section 120, its patenting in the patenting section 130, the slow cooling in the subsection 131, the quick cooling and keeping in the subsection 135.
  • the slow cooling is carried out in air, in the chamber 132.
  • the quick cooling is carried out in the molten lead bath 136.
  • the quick cooling is carried out by spraying cooling liquid, in the chamber 237 by the sprayers 238.
  • the keeping of the temperature is carried out in the molten lead bath 136, 336.
  • keeping of the temperature is carried out by spraying cooling liquid, into the chamber 237, 337 by the sprayers 238, 338.
  • the cooling liquid is water.
  • the steel wire F reaches a maximum temperature of 950°C, more preferably of 930 °C and even more preferably of 920°C.
  • the steel wire F reaches a first predetermined minimum temperature of 740-760°C, more preferably of about 750°C.
  • the steel wire F reaches a second predetermined minimum temperature of 550-650°C, more preferably of 580-600°C.
  • brassing comprises the application of a copper coating, the application of a zinc coating, and thermally diffusing the copper and the zinc applied.
  • drawing is a drawing in wet conditions.
  • Tests 1*, 2*, 3* carried out on wires made with the processes according to the prior art compared with tests 4 ⁇ , 5 ⁇ carried out on wires made with the process according to the invention make it possible to highlight an increase in the mechanical qualities both before patenting and at the end in wires patented following the process according to the present invention. It should also be noted how the microstructures in the wires made with the process according to the present invention are decidedly better, in terms of fine pearlite and in terms of lamellar spacing.
  • the Applicant has also been able to obtain a substantial improvement in the cording process thanks to the wires manufactured with the process according to the invention.
  • the process for manufacturing a steel wire according to the invention makes it possible

Claims (15)

  1. Procédé de fabrication d'un fil d'acier (F) comprenant :
    - l'obtention d'un fil d'acier (F), ayant un premier diamètre prédéterminé allant d'environ 0,5 mm à environ 3,5 mm ;
    - l'austénitisation dudit fil d'acier (F), à une température allant d'environ 900 °C à environ 1000 °C ;
    - le patentage dudit fil d'acier (F) ;
    - l'étirage dudit fil d'acier (F), jusqu'à un deuxième diamètre prédéterminé allant d'environ 0,1 mm à environ 2 mm ;
    dans lequel le patentage du fil d'acier (F) comprend :
    - le refroidissement lent dudit fil d'acier (F) dans l'air ou dans une atmosphère contrôlée, jusqu'à une première température prédéterminée allant d'environ 720 °C à environ 800 °C dans un laps de temps allant d'environ 4 s à environ 10 s ;
    - le refroidissement rapide dudit fil d'acier (F) dans un bain de plomb fondu ou par pulvérisation de liquide de refroidissement, jusqu'à une deuxième température prédéterminée allant d'environ 550 °C à environ 600 °C dans un laps de temps allant d'environ 0,5 s à environ 2 s ;
    - le maintien dudit fil d'acier (F) sensiblement à ladite deuxième température prédéterminée pendant un laps de temps d'au moins 3 s.
  2. Procédé selon la revendication 1, dans lequel le maintien dudit fil d'acier (F) sensiblement à ladite deuxième température prédéterminée est réalisé dans un bain de plomb fondu ou par pulvérisation de liquide de refroidissement.
  3. Procédé selon la revendication 1 dans lequel, pendant l'austénitisation dudit fil d'acier (F), ledit fil d'acier (F) atteint une température maximale de 950 °C.
  4. Procédé selon la revendication 1 dans lequel, pendant l'austénitisation du fil d'acier (F), ledit fil d'acier (F) atteint une température maximale de 930 °C.
  5. Procédé selon la revendication 1 dans lequel, pendant le refroidissement lent du fil d'acier (F), ledit fil d'acier (F) atteint une première température minimale prédéterminée de 740-760 °C.
  6. Procédé selon la revendication 1 dans lequel, pendant le refroidissement rapide du fil d'acier (F), ledit fil d'acier (F) atteint une deuxième température minimale prédéterminée de 550-650 °C.
  7. Procédé selon la revendication 1, ledit procédé comprenant, avant l'étirage du fil d'acier patenté (F), le revêtement du fil d'acier (F) avec au moins une couche de métal ou d'alliage métallique.
  8. Procédé selon la revendication 7, dans lequel ledit revêtement du fil d'acier (F) est réalisé afin de laitonner ledit fil d'acier (F).
  9. Procédé selon la revendication 8, dans lequel le laitonnage du fil d'acier (F) comprend :
    - l'application d'un revêtement de cuivre,
    - l'application d'un revêtement de zinc,
    - la diffusion thermique du cuivre et du zinc appliqués.
  10. Procédé selon la revendication 1, dans lequel l'étirage est réalisé dans des conditions humides.
  11. Procédé de fabrication continue d'un câble d'acier, comprenant :
    - la préparation d'une pluralité de fils d'acier (F) selon l'une quelconque des revendications 1 à 10 ;
    - le câblage des fils d'acier (F) de ladite pluralité.
  12. Installation destinée à la fabrication d'un fil d'acier (F), comprenant :
    - une section d'entrée (110) du fil d'acier (F) ;
    - une section d'austénitisation du fil d'acier (F) ;
    - une section de patentage du fil d'acier (F) ;
    - une section d'étirage du fil d'acier (F) ;
    dans laquelle la section de patentage comprend :
    - une première sous-section (131), appropriée pour refroidir lentement ledit fil d'acier (F) dans l'air ou dans une atmosphère contrôlée, jusqu'à une première température prédéterminée allant d'environ 720 à environ 800 °C dans un laps de temps de 4-10 s ;
    - une deuxième sous-section (135 ; 235 ; 335), séparée et différente de la première sous-section (131), appropriée pour refroidir rapidement ledit fil d'acier (F) dans un bain de plomb fondu ou par pulvérisation de liquide de refroidissement jusqu'à une deuxième température prédéterminée allant d'environ 550 °C à environ 600 °C dans un laps de temps de 0,5-2 s et maintenir ensuite ledit fil d'acier (F) sensiblement à ladite deuxième température prédéterminée allant d'environ 550 °C à environ 600 °C pendant un laps de temps d'au moins 3 s.
  13. Installation selon la revendication 12, dans laquelle la deuxième sous-section (335) de la section de patentage (130) comprend un bain de plomb fondu (336), traversé par le fil d'acier (F), suivi d'une chambre (337) avec au moins un pulvérisateur (338), pour pulvériser le fil d'acier (F) avec un aérosol de liquide de refroidissement.
  14. Installation selon la revendication 12, dans laquelle une section de revêtement métallique (140) du fil d'acier (F) est également prévue.
  15. Installation selon la revendication 12 ou 13, dans laquelle le liquide de refroidissement est l'eau.
EP11815567.0A 2010-12-23 2011-12-21 Procédé et installation de fabrication en continu un fil d'acier Active EP2655677B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ITMI20102385 2010-12-23
US201161441858P 2011-02-11 2011-02-11
PCT/IB2011/003144 WO2012085651A1 (fr) 2010-12-23 2011-12-21 Procédé et installation de fabrication en continu un fil d'acier

Publications (2)

Publication Number Publication Date
EP2655677A1 EP2655677A1 (fr) 2013-10-30
EP2655677B1 true EP2655677B1 (fr) 2018-06-06

Family

ID=43737038

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11815567.0A Active EP2655677B1 (fr) 2010-12-23 2011-12-21 Procédé et installation de fabrication en continu un fil d'acier

Country Status (6)

Country Link
EP (1) EP2655677B1 (fr)
CN (1) CN103314121B (fr)
BR (1) BR112013015116B1 (fr)
RU (1) RU2604542C2 (fr)
TR (1) TR201810002T4 (fr)
WO (1) WO2012085651A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL2951327T3 (pl) 2013-02-01 2020-09-07 Nv Bekaert Sa Wymuszone chłodzenie wodą drutów z grubej stali
CN103114197A (zh) * 2013-03-11 2013-05-22 袁建红 一种气排钉用铁丝退火方法
WO2018107473A1 (fr) * 2016-12-16 2018-06-21 蔡赛 Procédé de recuit et de traitement thermique pour fil d'acier
WO2018163541A1 (fr) * 2017-03-10 2018-09-13 住友電気工業株式会社 Fil machine pour ressort hélicoïdal oblique, et ressort hélicoïdal oblique
CN106811746A (zh) * 2017-03-13 2017-06-09 江苏伟建工具科技有限公司 一种高速钢皮膜槽
JP7078042B2 (ja) * 2017-05-25 2022-05-31 住友電気工業株式会社 斜め巻きばねおよびコネクタ

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE328602B (fr) 1962-08-24 1970-09-21 Morgan Construction Co
US3718024A (en) * 1971-02-12 1973-02-27 Morgan Construction Co Apparatus including a fluidized bed for cooling steel rod through transformation
DD127063A1 (fr) 1976-06-09 1977-09-07
JPS58221234A (ja) * 1982-05-19 1983-12-22 Sumitomo Electric Ind Ltd 鋼線材の熱処理方法
GB8505491D0 (en) * 1985-03-04 1985-04-03 Bekaert Sa Nv Heat treatment of steel
BE1004285A6 (fr) * 1989-07-03 1992-10-27 Centre Rech Metallurgique Procede et dispositif de refroidissement continu d'un fil d'acier trefile.
FR2661194B1 (fr) * 1990-04-20 1993-08-13 Coflexip Procede d'elaboration de fils d'acier destines a la fabrication de conduites flexibles, fils d'acier obtenus par ce procede et conduites flexibles renforcees par de tels fils.
ZA924360B (en) 1991-07-22 1993-03-31 Bekaert Sa Nv Heat treatment of steel wire
RU2102502C1 (ru) * 1994-10-17 1998-01-20 Инновационная фирма "Экомет", ЛТД" Способ термической обработки проволоки и устройство для его осуществления
RU2116360C1 (ru) * 1997-09-15 1998-07-27 Борис Николаевич Шустов Способ термической обработки протяжных изделий и установка для его реализации
EP1004689B1 (fr) * 1998-10-28 2014-01-29 Pirelli Tyre S.p.A. Fils métalliques revêtus et procédé de fabrication
JP4115622B2 (ja) * 1999-04-22 2008-07-09 日鐵住金溶接工業株式会社 溶接用鋼ワイヤの連続焼鈍炉
BE1014868A3 (fr) 2002-06-06 2004-05-04 Four Industriel Belge Procede et dispositif de patentage de fils d'acier
US8506878B2 (en) 2006-07-14 2013-08-13 Thermcraft, Incorporated Rod or wire manufacturing system, related methods, and related products

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
WO2012085651A1 (fr) 2012-06-28
TR201810002T4 (tr) 2018-08-27
CN103314121A (zh) 2013-09-18
CN103314121B (zh) 2015-04-08
RU2013132962A (ru) 2015-01-27
EP2655677A1 (fr) 2013-10-30
BR112013015116B1 (pt) 2019-03-19
BR112013015116A2 (pt) 2016-11-22
RU2604542C2 (ru) 2016-12-10
WO2012085651A8 (fr) 2013-07-18

Similar Documents

Publication Publication Date Title
EP2655677B1 (fr) Procédé et installation de fabrication en continu un fil d'acier
JP5361098B1 (ja) 圧縮コイルばねおよびその製造方法
JP6251830B1 (ja) 圧縮コイルばね
US20160145712A1 (en) High carbon steel wire rod and method for manufacturing same
JPS62192532A (ja) スチ−ルワイヤ−の製造方法
JPH10168525A (ja) マイクロ合金化された高炭素鋼及び高張力フィラメントの製造方法
CN110832096A (zh) 高强度钢丝
CN107208208A (zh) 拉丝加工性优异的高碳钢线材
KR20110021741A (ko) 비스무트에서 패턴팅된 스틸 필라멘트
JP5553384B2 (ja) 高炭素鋼線材の製造方法
US5503688A (en) Metal wire comprising a substrate of steel of work-hardened tempered martensite type structure and a coating
JP4980172B2 (ja) 強度延性バランスに優れた高強度極細鋼線の製造方法
US6949149B2 (en) High strength, high carbon steel wire
JP2001220650A (ja) 鋼線、ばね及びそれらの製造方法
JPH06330168A (ja) パテンティングされた鋼ワイヤの製造方法
US4604145A (en) Process for production of steel bar or steel wire having an improved spheroidal structure of cementite
JP7062395B2 (ja) 圧縮コイルばねの製造方法
JP2000119805A (ja) 伸線加工性に優れた鋼線材
CN109689238B (zh) 钢管的在线制造方法
JPH07268546A (ja) 二層組織構造を有する高炭素鋼線材およびその製造方法
JP6614005B2 (ja) 高強度鋼線用熱間圧延線材およびその製造方法
US10131966B2 (en) Method for heat treatment with continuous cooling of a steel reinforcement element for tires
JP2010065274A (ja) 高炭素鋼線材のパテンティング方法
JPH05295436A (ja) 過共析鋼線材の製造方法
JP2002180200A (ja) 硬引きばね用鋼線材、硬引きばね用伸線材および硬引きばね並びに硬引きばねの製造方法

Legal Events

Date Code Title Description
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

17P Request for examination filed

Effective date: 20130716

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

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: PIRELLI TYRE S.P.A.

DAX Request for extension of the european patent (deleted)
RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: NV BEKAERT SA

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20171023

RIN1 Information on inventor provided before grant (corrected)

Inventor name: PIERALLI, ANDREA

Inventor name: AGRESTI, SIMONE

Inventor name: CIANCIOSI, FEDERICO

GRAJ Information related to disapproval of communication of intention to grant by the applicant or resumption of examination proceedings by the epo deleted

Free format text: ORIGINAL CODE: EPIDOSDIGR1

INTC Intention to grant announced (deleted)
GRAR Information related to intention to grant a patent recorded

Free format text: ORIGINAL CODE: EPIDOSNIGR71

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

INTG Intention to grant announced

Effective date: 20180426

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

Ref country code: AT

Ref legal event code: REF

Ref document number: 1006150

Country of ref document: AT

Kind code of ref document: T

Effective date: 20180615

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602011049097

Country of ref document: DE

REG Reference to a national code

Ref country code: RO

Ref legal event code: EPE

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20180606

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180606

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180606

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180906

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180606

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180606

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180906

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180606

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180907

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180606

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180606

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180606

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 1006150

Country of ref document: AT

Kind code of ref document: T

Effective date: 20180606

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180606

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180606

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181006

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180606

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180606

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180606

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180606

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180606

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602011049097

Country of ref document: DE

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20190307

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180606

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180606

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602011049097

Country of ref document: DE

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20181221

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20181221

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180606

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20181231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20181231

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20181221

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190702

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180606

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20181231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20181231

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20181231

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20181221

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20181221

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20191230

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180606

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20111221

Ref country code: MK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180606

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20201221

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: TR

Payment date: 20221220

Year of fee payment: 12

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230619

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: RO

Payment date: 20231212

Year of fee payment: 13