EP0877824B1 - Fil metallique pret a l'emploi et procede pour obtenir ce fil - Google Patents
Fil metallique pret a l'emploi et procede pour obtenir ce fil Download PDFInfo
- Publication number
- EP0877824B1 EP0877824B1 EP97900245A EP97900245A EP0877824B1 EP 0877824 B1 EP0877824 B1 EP 0877824B1 EP 97900245 A EP97900245 A EP 97900245A EP 97900245 A EP97900245 A EP 97900245A EP 0877824 B1 EP0877824 B1 EP 0877824B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wire
- steel
- alloying element
- weight
- microalloyed
- 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.)
- Expired - Lifetime
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
- 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
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- 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
- C22C38/12—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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12354—Nonplanar, uniform-thickness material having symmetrical channel shape or reverse fold [e.g., making acute angle, etc.]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12375—All metal or with adjacent metals having member which crosses the plane of another member [e.g., T or X cross section, etc.]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12431—Foil or filament smaller than 6 mils
Definitions
- the invention relates to ready-to-use metal wires and methods for obtaining these sons. These ready-made threads are used for example to reinforce articles of plastics or rubber, in particular pipes, belts, tablecloths, tire covers.
- ready-to-use yarn used in the present application means, in a way known in the art, that this wire can be used, for the intended application, without the to undergo a heat treatment likely to modify its structure metallurgical and without subjecting it to a deformation of its metallic material, by example a wire drawing, likely to modify its diameter.
- Patent application WO-A-92/14811 describes a method for obtaining a wire ready for the use comprising a steel substrate whose structure comprises more than 90% of hardened returned martensite, the steel having a carbon content at least equal to 0.05% and at most equal to 0.6%, this substrate being coated with a metal alloy other than steel, for example brass.
- the process for obtaining this thread comprises a quenching treatment on a work hardened wire by heating the wire above the point of AC3 transformation to give it a homogeneous austenite structure and then rapidly cooling, at a speed at least equal to 150 ° C / second, at below the end point of martensitic transformation. After this treatment of quenching at least two metals are deposited on the wire, the wire is heated to cause by diffusion the formation of an alloy of these metals, generally brass, we then cool the wire and we work harden it.
- EP-A-330752 describes a steel wire (carbon from 0.01 to 0.5%) for be used as tire reinforcement and which may contain Nb, V and / or Ti for obtaining a special structure or for regulating the content of carbon and nitrogen.
- the starting steel contains (in a way optional) Cr and / or Mo to provide improved corrosion resistance.
- the purpose of the method followed by EP-A-330752 is directed purely to obtaining of a mixed structure of ferrite and martensite and / or bainite.
- the ready-to-use wire has a coating of metal alloy other than steel disposed on a microalloyed steel substrate having the characteristics mentioned above.
- a deposition is carried out on the wire.
- the invention also relates to assemblies comprising at least one wire ready for the use according to the invention.
- assemblies are for example strands, wire cables, especially cables with wire layers or cables made up of strands of wires.
- the invention also relates to articles reinforced at least in part by threads. ready to use or by assemblies conforming to the preceding definitions, such articles being for example pipes, belts, tablecloths, envelopes tires.
- returned martensite structure means that this structure contains less than 1% of non-martensitic phase (s). this other phase, or these other phases, being due to inevitable heterogeneities of steel.
- breaking strength measurements are carried out in tension according to the method described in French standard AFNOR NF A 03-151 of June 1978.
- the structure of steels is determined visually with a microscope optical with a magnification of 400.
- the preparation of samples by chemical attack as well as structural examination are carried out according to the following reference: De Ferri Metallographica vol. No. II, A. Schrader, A. Rose, Edition Verlay Stahleisen GmbH. Düsseldorf.
- C, Mn, Ni, Cr, Mo. Si and Co represent the% by weight, that is to say % by weight, of chemical bodies of which they are the symbols.
- vanadium can be used in this formula having the same effect as molybdenum, while the aforementioned reference does not mention vanadium.
- T d [area of peak ⁇ ] / [area of peak ⁇ + area of peak ⁇ ]
- the peak ⁇ corresponds approximately to the angle of 50 ° and the peak ⁇ corresponds approximately to the angle 51 °.
- the steel of these machine wires has a pearlitic structure.
- M F and AC3 for these wire rods are given in table 2.
- M F AC3 Son A and B 123 ° C 769 ° C Wire C 122 ° C 779 ° C Wire D 125 ° C 786 ° C
- wires A and B are therefore identical and not micro-alloyed, the wires C and D being micro-alloyed and different from each other.
- the quench cooling conditions are as follows.
- Wires A, C and D speed of 130 ° C / second using as quench gas mixture of hydrogen and nitrogen (75% by volume of hydrogen, 25% by volume nitrogen volume).
- Wire B speed of 180 ° C / second using pure hydrogen.
- the Vickers hardness is measured on each of the wires obtained referenced A1, B1, C1 and D1, the letters A, B, C and D each identifying the starting wire rod cited above.
- the wire A1 is unusable due to its too low hardness, which is due to the fact that its structure is not made up solely of martensite but contains both martensite and bainite.
- the wires B1, C1 and D1 each consist almost entirely of martensite and their Vickers hardness is satisfactory.
- wires C1 and D1 made of microalloyed steel, are obtained with easy quenching perform (relatively low speed, with an inexpensive gas mixture and not dangerous), while wire B1 is obtained with a difficult process and expensive (high quenching speed, using pure hydrogen), this process to obtain sufficient hardness but which is however less than that of the microalloyed wires C1 and D1.
- vanadium makes it possible to improve the quenchability of steel, i.e. the formation of a single martensite phase during the quenching.
- control wire B2 is then heated by the Joule effect, for 5 seconds each time, to three tempering temperatures T r (525 ° C, 590 ° C, 670 ° C) and then cooled to room temperature (about 20 ° C) , in order to evaluate the effect of this heat treatment on the tensile strength R m and on the diffusion rate T d of the brass, formed by the alloy of copper and zinc, for the wire thus obtained B3, in each case.
- the diffusion rate T d is insufficient (less than 0.85) but that the breaking strength is higher than for the other temperatures.
- a very good diffusion of the brass is obtained for the treatment at 670 ° C (diffusion greater than 0.85) but the resistance to rupture is notably lower than at 525 ° C and is not sufficient to allow obtaining high tensile strength by subsequent drawing.
- the breaking strength is slightly higher for treatment at 590 ° C than that obtained at 670 ° C, with a slightly lower diffusion of the brass, although satisfactory, but this resistance is also insufficient to guarantee a high resistance after wire drawing. .
- the diffusion rate of the brass is higher at 0.9, that is to say that the diffusion is very good, and that the resistance to breaking is also very good, much higher than that obtained for the wire witness B3 when the diffusion of the brass is greater than 0.9.
- the presence of vanadium therefore allows, unexpectedly, to have both a good diffusion of brass and good resistance to breakage thanks to the formation of fine precipitates of carbonitride and / or vanadium carbide, which was in solution after the quenching period, despite the very short income time.
- T r are those indicated previously for the income and the values of T d are those indicated previously and which were determined after the brass plating operation, before drawing, the values of T d being practically unchanged during the wire drawing.
- wires C4 and D4 in accordance with the invention are characterized both by a good rate of diffusion of brass (greater than 0.9) and excellent resistance to breakage (greater than 2900 MPa).
- B4 control wires have resistance to breakage significantly lower than that of wires C4 and D4 conforming to the invention, except for the wire B4 initially treated at a tempering temperature of 525 ° C, but then the diffusion rate of the brass is insufficient (less than 0.85), i.e. drawing is difficult to perform and leads to frequent breaks of the wire during its deformation, which makes obtaining the wire much more difficult than in the case of wires C4 and D4 of the invention.
- the wire rod usable for the invention is produced in the manner which is usual for a wire rod intended to be transformed into fine wire ready for use to reinforce tire casings.
- a bath of molten steel having the composition indicated for the wire rod according to the invention.
- This steel is first produced in an electric oven or oxygen converter then deoxidized in a bag using an oxidant, like silicon, which is not likely to produce inclusions of alumina.
- the vanadium is then introduced into the bag in the form of loose pieces of ferrovanadium by addition to the metal bath.
- the process is similar if the alloying element is to be chromium or molybdenum.
- the steel bath is continuously poured in the form of billets or blooms.
- These semi-finished products are then conventionally rolled into wires machine with a diameter of 5.5 mm, first in billets, if it is blooms, or directly in the wire rod in the case of billets.
- the alloying element is vanadium alone, which has the advantage of giving small precipitates, while chromium gives large precipitated and that molybdenum tends to cause segregation. If we uses chromium alone, its content in the steel is advantageously at least equal to 0.2%.
- deformation of the wire in the previous examples was carried out by drawing. but other techniques are possible, for example rolling, associated possibly to a wire drawing, for at least one of the operations of deformation.
- the coating of the wire ready for the use according to the invention is an alloy other than brass, this alloy being obtained with two metals, or more than two metals, for example ternary copper - zinc - nickel alloys, copper - zinc - cobalt, copper - zinc - tin, the main thing being that the metals used are likely to form a alloy, by diffusion, at a temperature at most equal to the temperature of annealed.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Heat Treatment Of Steel (AREA)
- Metal Extraction Processes (AREA)
Description
- utilisation d'un fil machine de départ ayant une teneur en carbone inférieure à celle d'un acier perlitique.
- grande souplesse dans le choix des diamètres des fils machine et des fils prêts à l'emploi ainsi obtenus,
- tréfilage réalisé à partir du fil machine avec des vitesses élevées et avec des casses réduites,
- le traitement de diffusion est réalisé en même temps que le revenu du fil, ce qui limite les coûts de fabrication.
On utilise dans ce but la relation
Le taux de diffusion Td est donné par la formule
| C | Mn | Si | V | S | P | |
| Fils A,B | 0,427 | 0,619 | 0,222 | 0 | < 0,003 | < 0,003 |
| Fil C | 0,428 | 0,621 | 0,224 | 0,103 | < 0,003 | < 0,003 |
| Fil D | 0,419 | 0,611 | 0,222 | 0,156 | < 0,003 | < 0,003 |
| MF | AC3 | |
| Fils A et B | 123°C | 769°C |
| Fil C | 122°C | 779°C |
| Fil D | 125°C | 786°C |
- chauffage à 1000°C maintenu pendant 5 secondes ;
- refroidissement rapide jusqu'à la température ambiante (environ 20°C).
| Fil A1 | Fil B1 | Fil C1 | Fil D1 |
| 650 | 685 | 690 | 700 |
Les fils B1, C1 et D1 sont constitués chacun pratiquement uniquement de martensite et leur dureté Vickers est satisfaisante.
| Tr | Rm (MPa) | Td |
| 525°C | 1239 | 0,82 |
| 590°C | 1120 | 0,92 |
| 670°C | 964 | 0,95 |
| Rm(MPa) | Td | |
| Fil C3 | 1229 | 0,92 |
| Fil D3 | 1261 | 0,92 |
| Tr | Rm(MPa) | Td | |
| B4 | 525°C | 2960 | 0,82 |
| B4 | 590°C | 2820 | 0,92 |
| B4 | 670°C | 2530 | 0,95 |
| C4 | 590°C | 2945 | 0,92 |
| D4 | 590°C | 2983 | 0,92 |
- la teneur en carbone de l'acier est au moins égale à 0,3 % et au plus égale à 0,5 % (% en poids), cette teneur étant par exemple environ 0,4 % ;
- l'acier vérifie les relations suivantes : 0,3 % ≤Mn≤0,6 % ; 0,1 % ≤Si≤0,3 %; P≤0,02%;S≤0,02%(% en poids) ;
- l'élément d'alliage ou l'ensemble des éléments d'alliage représente au plus 0,3 % en poids de l'acier ;
- la résistance à la rupture est au moins égale à 2900 MPa ;
- le diamètre est au moins égal à 0,15 mm et au plus égal à 0,40 mm.
- la teneur en carbone de l'acier du fil machine utilisé est au moins égale à 0,3 % et au plus égale à 0,5 % (% en poids), cette teneur étant par exemple environ 0,4 %;
- l'acier du fil machine utilisé vérifie les relations suivantes :
0,3 % ≤ Mn≤0,6 % ; 0,1 %≤Si≤0,3 %;P≤0,02 %; S≤0,02 %(% en poids) ; - l'élément d'alliage ou l'ensemble des éléments d'alliage de l'acier du fil machine utilisé représente au plus 0,3 % en poids de cet acier ;
- la vitesse de refroidissement lors de la trempe est inférieure à 150°C/seconde ;
- la température de revenu est au moins égale à 400°C et au plus égale à 650°C ;
- on refroidit le fil à la température ambiante après l'avoir porté à la température de revenu ;
- le taux de déformation ε après le traitement de revenu est au moins égal à 3.
Claims (28)
- Fil d'acier microallié prêt à l'emploi présentant les caractéristiques suivantes:son diamètre est compris dans un domaine de 0,10 mm à 0,50 mm;sa résistance à la rupture en traction est au moins égale à 2800 MPa;l'acier microallié a une teneur en carbone de 0,2% à 0,6% et une teneur de 0,08% à 0,5% d'un élément d'alliage choisi dans le groupe formé par le vanadium (V), le molybdène (Mo), le chrome (Cr) ou un mélange de deux ou plus de ces éléments (% en poids d'acier);l'acier microallié a une structure de martensite revenue écrouie.
- Fil selon la revendication 1, caractérisé en ce qu'il comporte un revêtement en alliage métallique autre que l'acier disposé sur l'acier microallié servant de substrat.
- Fil selon la revendication 2, caractérisé en ce que le revêtement est en laiton.
- Fil selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la teneur en carbone de l'acier microallié est au moins égale à 0,3% et au plus égale à 0,5%.
- Fil selon la revendication 4, caractérisé en ce que la teneur en carbone est égale à environ 0.4%.
- Fil selon l'une quelconque des revendications 1 à 5, caractérisé en ce que l'acier vérifie les relations suivantes (% en poids):
0,3%≤Mn≤0,6%;0,1%≤Si≤0,3%;P≤0,02%;S≤0,02%. - Fil selon l'une quelconque des revendications 1 à 6, caractérisé en ce que l'élément d'alliage (V, Mo, Cr) représente au plus 0.3% en poids de l'acier microallié.
- Fil selon l'une quelconque des revendications 1 à 7, caractérisé en ce que l'élément d'alliage est le vanadium seul.
- Fil selon l'une quelconque des revendications 1 à 7, caractérisé en ce que l'élément d'alliage est le chrome seul, sa teneur dans l'acier étant d'au moins 0,2%.
- Fil selon l'une quelconque des revendications 1 à 9, caractérisé en ce que sa résistance à la rupture en traction est au moins égale à 2900 MPa.
- Fil selon l'une quelconque des revendications 1 à 10, caractérisé en ce que son diamètre est au moins égal à 0,15 mm et au plus égal à 0,40 mm.
- Procédé pour produire un fil d'acier microallié prêt à l'emploi selon l'une quelconque des revendications 1 à 11, caractérisé en ce qu'il comporte les étapes suivantes:a) on part d'un fil machine en acier microallié ayant une teneur en carbone de 0,2% à 0,6% et une teneur de 0,08% à 0,5% d'un élément d'alliage choisi dans le groupe formé par le vanadium (V) , le molybdène (Mo), le chrome (Cr) ou un mélange de deux ou plus de ces éléments (% en poids d'acier);b) on déforme ce fil machine de telle sorte que le diamètre du fil après cette déformation soit inférieur à 3 mm;c) on arrête la déformation et on effectue un traitement thermique de trempe sur le fil déformé, ce traitement consistant à chauffer le fil au-dessus du point de transformation AC3 pour lui donner une structure d'austénite homogène, puis à le refroidir au moins jusqu'au point de fin de transformation martensitique MF, la vitesse de ce refroidissement étant au moins égale à 60°C/s, de façon à obtenir une structure de martensite;d) on chauffe ensuite le fil à une température, dite température de revenu, au moins égale à 250°C et au plus égale à 700°C, de façon à provoquer la formation, pour l'acier. d'une précipitation d'au moins un carbonitrure et/ou carbure de l'élément d'alliage et la formation d'une structure de martensite revenue;e) on refroidit ensuite le fil à une température inférieure à 250°C;f) on déforme ensuite le fil, le taux de déformation ε étant au moins égal à 1, de manière à obtenir une structure de martensite revenue écrouie;
- Procédé selon la revendication 12, caractérisé en ce que, après l'étape c), on effectue sur le fil un dépôt d'au moins deux métaux susceptibles de former par diffusion un alliage différent de l'acier sur l'acier du fil servant de substrat, le chauffage à la température de revenu, lors de l'étape d), servant également à provoquer la formation, par diffusion, d'un alliage de ces métaux.
- Procédé selon la revendication 13, caractérisé en ce que l'on effectue un dépôt de cuivre et de zinc pour obtenir un alliage de laiton lors de l'étape d).
- Procédé selon l'une quelconque des revendications 12 à 14, caractérisé en ce que la teneur en carbone de l'acier du fil machine est au moins égale à 0,3% et au plus égale à 0,5%.
- Procédé selon la revendication 15, caractérisé en ce que la teneur en carbone est égale à environ 0,4%.
- Procédé selon l'une quelconque des revendications 12 à 16, caractérisé en ce que l'acier du fil machine vérifie les relations suivantes (% en poids) :
0,3% ≤ Mn ≤0,6% ; 0,1% ≤ Si ≤ 0,3% ; P ≤ 0,02% ; S ≤ 0,02%. - Procédé selon l'une quelconque des revendications 12 à 17, caractérisé en ce que l'élément d'alliage (V, Mo, Cr) représente au plus 0,3% en poids d'acier microallié.
- Procédé selon l'une quelconque des revendications 12 à 18, caractérisé en ce que l'élément d'alliage est le vanadium seul.
- Procédé selon l'une quelconque des revendications 12 à 18, caractérisé en ce que l'élément d'alliage est le chrome seul, sa teneur dans l'acier étant d'au moins 0,2%.
- Procédé selon l'une quelconque des revendications 12 à 20, caractérisé en ce que la vitesse de refroidissement lors de la trempe de l'étape c) est inférieure à 150°C/seconde.
- Procédé selon l'une quelconque des revendications 12 à 21, caractérisé en ce que la température de revenu de l'étape d) est au moins égale à 400°C et au plus égale à 650°C.
- Procédé selon l'une quelconque des revendications 12 à 22. caractérisé en ce que l'on refroidit le fil à la température ambiante après l'avoir porté à la température de revenu.
- Procédé selon l'une quelconque des revendications 12 à 23, caractérisé en ce que le taux de déformation ε après le traitement de revenu est au moins égal à 3.
- Assemblage de renforcement comportant au moins un fil d'acier microallié selon l'une quelconque des revendications 1 à 11.
- Utilisation d'un fil d'acier microallié selon l'une quelconque des revendications 1 à 11 ou d'un assemblage selon la revendication 25, pour le renforcement d'articles en matières plastiques et/ou en caoutchouc.
- Article renforcé au moins en partie par un fil d'acier microallié conforme à l'une quelconque des revendications 1 à 11 ou par un assemblage selon la revendication 25.
- Article selon la revendication 27, caractérisé en ce qu'il est un pneumatique.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9600406A FR2743573A1 (fr) | 1996-01-16 | 1996-01-16 | Fil metallique pret a l'emploi et procede pour obtenir ce fil |
| FR9600406 | 1996-01-16 | ||
| PCT/FR1997/000028 WO1997026379A1 (fr) | 1996-01-16 | 1997-01-08 | Fil metallique pret a l'emploi et procede pour obtenir ce fil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0877824A1 EP0877824A1 (fr) | 1998-11-18 |
| EP0877824B1 true EP0877824B1 (fr) | 2000-09-20 |
Family
ID=9488126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP97900245A Expired - Lifetime EP0877824B1 (fr) | 1996-01-16 | 1997-01-08 | Fil metallique pret a l'emploi et procede pour obtenir ce fil |
Country Status (13)
| Country | Link |
|---|---|
| US (1) | US6106637A (fr) |
| EP (1) | EP0877824B1 (fr) |
| JP (1) | JP2000503724A (fr) |
| KR (1) | KR19990077252A (fr) |
| CN (1) | CN1079117C (fr) |
| AU (1) | AU1383497A (fr) |
| BR (1) | BR9706987A (fr) |
| CA (1) | CA2243324A1 (fr) |
| DE (1) | DE69703149T2 (fr) |
| ES (1) | ES2150752T3 (fr) |
| FR (1) | FR2743573A1 (fr) |
| RU (1) | RU2177510C2 (fr) |
| WO (1) | WO1997026379A1 (fr) |
Families Citing this family (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE60039861D1 (de) * | 1999-04-20 | 2008-09-25 | Samsung Electronics Co Ltd | Werbeverwaltungssystem für digitale videoströme |
| CN1086321C (zh) * | 1999-12-23 | 2002-06-19 | 尤文法 | 一种金属丝网的制造方法 |
| US6395109B1 (en) | 2000-02-15 | 2002-05-28 | Cargill, Incorporated | Bar product, cylinder rods, hydraulic cylinders, and method for manufacturing |
| CA2303693C (fr) * | 2000-03-15 | 2001-12-11 | Richard Aaron Barkley | Methode et appareil pour renforcer les boucles de bande en metal |
| FR2836847B1 (fr) * | 2002-03-05 | 2004-05-14 | Coflexip | Procede de fabrication de fil d'armure en acier plaque pour conduite tubulaire flexible de transport d'hydrocarbures, et conduite ainsi armee |
| US20040149362A1 (en) * | 2002-11-19 | 2004-08-05 | Mmfx Technologies Corporation, A Corporation Of The State Of California | Cold-worked steels with packet-lath martensite/austenite microstructure |
| RU2262539C1 (ru) * | 2003-12-26 | 2005-10-20 | Общество с ограниченной отвественностью "Интелмет НТ" | Сортовой прокат круглый из легированной стали для холодной объемной штамповки сложнопрофильных высокопрочных крепежных деталей |
| RU2249626C1 (ru) * | 2003-12-26 | 2005-04-10 | Общество с ограниченной ответственностью "Интелмет НТ" | Сортовой прокат, круглый, из среднеуглеродистой борсодержащей стали для холодной объемной штамповки высокопрочных крепежных деталей |
| RU2249628C1 (ru) * | 2003-12-26 | 2005-04-10 | Общество с ограниченной ответственностью "Интелмет НТ" | Сортовой прокат, круглый, из низкоуглеродистой стали для холодной объемной штамповки сложнопрофильных крепежных деталей особо сложной формы |
| RU2249627C1 (ru) * | 2003-12-26 | 2005-04-10 | Общество с ограниченной ответственностью "Интелмет НТ" | Сортовой прокат, круглый, из микролегированной высокопластичной стали для холодной объемной штамповки высокопрочных крепежных деталей |
| RU2262538C1 (ru) * | 2003-12-26 | 2005-10-20 | Общество с ограниченной ответственностью "Интелмет НТ" | Сортовой прокат круглый из низкоуглеродистой высокопластичной стали для холодной объемной штамповки сложнопрофильных крепежных деталей особо сложной формы |
| RU2249629C1 (ru) * | 2003-12-26 | 2005-04-10 | Общество с ограниченной ответственностью "Интелмет НТ" | Сортовой прокат, круглый, из среднеуглеродистой высокопластичной стали для холодной объемной штамповки сложнопрофильных крепежных деталей особо сложной формы |
| RU2285054C2 (ru) * | 2004-07-13 | 2006-10-10 | Открытое акционерное общество "Оскольский электрометаллургический комбинат" | Круглый сортовой прокат из среднеуглеродистой хромсодержащей стали |
| RU2285056C2 (ru) * | 2004-07-13 | 2006-10-10 | Открытое акционерное общество "Оскольский электрометаллургический комбинат" | Пруток из среднеуглеродистой стали |
| RU2293770C2 (ru) * | 2004-07-13 | 2007-02-20 | Общество с ограниченной ответственностью "Интелмет НТ" | Пруток из среднеуглеродистой микролегированной стали |
| RU2285055C2 (ru) * | 2004-07-13 | 2006-10-10 | Открытое акционерное общество "Оскольский электрометаллургический комбинат" | Способ производства сортового проката в прутках из среднеуглеродистой микролегированной стали |
| RU2277595C1 (ru) * | 2004-10-05 | 2006-06-10 | Открытое акционерное общество "Оскольский электрометаллургический комбинат" (ОАО "ОЭМК") | Круглый сортовой прокат из среднелегированной стали |
| US7617713B2 (en) * | 2004-12-14 | 2009-11-17 | The Goodyear Tire + Rubber Company, Inc. | Final die for wire drawing machines |
| DE102006008607A1 (de) * | 2005-04-11 | 2006-10-26 | Schaeffler Kg | Axialfixierung eines Federabstützteils eines schaltbaren Stößels |
| RU2330891C2 (ru) * | 2006-09-19 | 2008-08-10 | Открытое акционерное общество "Оскольский электрометаллургический комбинат" | Сортовой прокат круглый из низкоуглеродистой высокопластичной стали для холодной объемной штамповки |
| RU2336364C1 (ru) * | 2006-12-19 | 2008-10-20 | Институт физики металлов УрО РАН | Аустенитная сталь |
| RU2480852C2 (ru) * | 2011-01-17 | 2013-04-27 | Закрытое акционерное общество "Москабельмет" | Катанка из алюминиевого сплава |
| RU2505619C1 (ru) * | 2012-11-23 | 2014-01-27 | Открытое акционерное общество "Научно-производственное объединение "Прибор" | Малоуглеродистая легированная сталь |
| FR3013737B1 (fr) * | 2013-11-22 | 2016-01-01 | Michelin & Cie | Fil d'acier a haute trefilabilite comprenant un taux de carbone en masse compris entre 0,05 % inclus et 0,4 % exclu |
| WO2015097349A1 (fr) | 2013-12-24 | 2015-07-02 | Arcelormittal Wire France | Fil laminé à froid en acier à haute résistance à la fatigue et à la fragilisation par l'hydrogène et renfort de conduites flexibles l'incorporant |
| WO2017059578A1 (fr) * | 2015-10-09 | 2017-04-13 | Nv Bekaert Sa | Fil d'acier allongé à revêtement métallique pour résistance à la corrosion |
| FR3045670A1 (fr) * | 2015-12-16 | 2017-06-23 | Michelin & Cie | Feuillard en acier au carbone, son utilisation pour le renforcement d'articles en caoutchouc |
| FR3045671B1 (fr) * | 2015-12-16 | 2017-12-08 | Michelin & Cie | Pneu renforce par un ruban en acier au carbone |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU464632A1 (ru) * | 1973-06-22 | 1975-03-25 | Магнитогорский горно-металлургический институт им. Г.И. Носова | Способ изготовлени биметаллической проволоки |
| GB2088257B (en) * | 1980-11-08 | 1984-07-18 | Sumitomo Metal Ind | Making rod or wire |
| BR8208108A (pt) * | 1982-12-09 | 1984-12-11 | Univ California | Vergalhoes e arames de aco de fase dupla com alta resistencia e alta dutibilidade com um baixo teor em carbono,e processo para fabrica-los |
| EP0330752B1 (fr) * | 1988-02-29 | 1994-03-02 | Kabushiki Kaisha Kobe Seiko Sho | Fil très fin ayant une résistance très élevée et matériaux de renforcement et matériaux composites contenant ce fil |
| US5167727A (en) * | 1989-10-02 | 1992-12-01 | The Goodyear Tire & Rubber Company | Alloy steel tire cord and its heat treatment process |
| FR2672827A1 (fr) * | 1991-02-14 | 1992-08-21 | Michelin & Cie | Fil metallique comportant un substrat en acier ayant une structure de type martensite revenue ecrouie, et un revetement; procede pour obtenir ce fil. |
| JP2627373B2 (ja) * | 1991-07-08 | 1997-07-02 | 金井 宏之 | 高強度極細金属線 |
| RU2034052C1 (ru) * | 1992-06-15 | 1995-04-30 | Белорусский Металлургический Завод | Катанка для металлокорда |
| JPH06336648A (ja) * | 1993-05-28 | 1994-12-06 | Nippon Steel Corp | 耐遅れ破壊特性に優れた高強度pc棒線とその製造方法 |
-
1996
- 1996-01-16 FR FR9600406A patent/FR2743573A1/fr active Pending
-
1997
- 1997-01-08 US US09/101,652 patent/US6106637A/en not_active Expired - Lifetime
- 1997-01-08 CA CA002243324A patent/CA2243324A1/fr not_active Abandoned
- 1997-01-08 AU AU13834/97A patent/AU1383497A/en not_active Abandoned
- 1997-01-08 CN CN97193103A patent/CN1079117C/zh not_active Expired - Fee Related
- 1997-01-08 DE DE69703149T patent/DE69703149T2/de not_active Expired - Lifetime
- 1997-01-08 RU RU98115314/02A patent/RU2177510C2/ru not_active IP Right Cessation
- 1997-01-08 WO PCT/FR1997/000028 patent/WO1997026379A1/fr not_active Ceased
- 1997-01-08 ES ES97900245T patent/ES2150752T3/es not_active Expired - Lifetime
- 1997-01-08 JP JP9525726A patent/JP2000503724A/ja active Pending
- 1997-01-08 BR BR9706987A patent/BR9706987A/pt not_active IP Right Cessation
- 1997-01-08 EP EP97900245A patent/EP0877824B1/fr not_active Expired - Lifetime
- 1997-01-08 KR KR1019980705397A patent/KR19990077252A/ko not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| AU1383497A (en) | 1997-08-11 |
| EP0877824A1 (fr) | 1998-11-18 |
| CN1214085A (zh) | 1999-04-14 |
| CA2243324A1 (fr) | 1997-07-24 |
| ES2150752T3 (es) | 2000-12-01 |
| WO1997026379A1 (fr) | 1997-07-24 |
| RU2177510C2 (ru) | 2001-12-27 |
| FR2743573A1 (fr) | 1997-07-18 |
| JP2000503724A (ja) | 2000-03-28 |
| KR19990077252A (ko) | 1999-10-25 |
| US6106637A (en) | 2000-08-22 |
| DE69703149D1 (de) | 2000-10-26 |
| BR9706987A (pt) | 1999-07-20 |
| DE69703149T2 (de) | 2001-05-17 |
| CN1079117C (zh) | 2002-02-13 |
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