EP0845544B1 - Stahlprodukt aus bainitischem Stahl sowie Verfahren zur Herstellung des Stahlproduktes - Google Patents

Stahlprodukt aus bainitischem Stahl sowie Verfahren zur Herstellung des Stahlproduktes Download PDF

Info

Publication number
EP0845544B1
EP0845544B1 EP97402787A EP97402787A EP0845544B1 EP 0845544 B1 EP0845544 B1 EP 0845544B1 EP 97402787 A EP97402787 A EP 97402787A EP 97402787 A EP97402787 A EP 97402787A EP 0845544 B1 EP0845544 B1 EP 0845544B1
Authority
EP
European Patent Office
Prior art keywords
steel
steel product
temperature
product
chemical composition
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
Application number
EP97402787A
Other languages
English (en)
French (fr)
Other versions
EP0845544A1 (de
Inventor
Jacques Bellus
Gilles Pierson
Claude Pichard
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.)
Ascometal SA
Original Assignee
Ascometal 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 Ascometal SA filed Critical Ascometal SA
Publication of EP0845544A1 publication Critical patent/EP0845544A1/de
Application granted granted Critical
Publication of EP0845544B1 publication Critical patent/EP0845544B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • C21D8/0263—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment following hot rolling
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • C21D1/19—Hardening; Quenching with or without subsequent tempering by interrupted quenching
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • C21D1/19—Hardening; Quenching with or without subsequent tempering by interrupted quenching
    • C21D1/20—Isothermal quenching, e.g. bainitic hardening
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/002—Bainite

Definitions

  • the present invention relates to a steel product having high mechanical properties, good impact resistance and good machinability, the steel product can be used to manufacture directly by machining mechanical steel parts having high mechanical characteristics and good impact resistance.
  • Step product means a steel product obtained by rolling with hot of a semi-finished product such as an ingot, a bloom, a billet or a slab, possibly having undergone a heat treatment after the hot rolling, and being, for example, in the form of a bar round or square section, of a profile, a wire, a sheet, a plate, or even in the form of a seamless tube.
  • the tempering generates risks of spotting which makes the manufacture of the steel product delicate, this manufacture being all the more delicate as the mechanical characteristics sought are high.
  • the need for income after quenching lengthens the manufacturing process, which increases costs.
  • the relatively high carbon content, necessary to obtain such characteristics mechanical makes machining difficult, in particular because, during tempering, very hard carbides can form.
  • the object of the present invention is to remedy these drawbacks by proposing a means for manufacturing a mechanical mechanical part of which one at least part has both a tensile strength greater than 1000 MPa, very good ductility, good machinability, these properties obtained without the need for treatment thermal income.
  • the subject of the invention is a steel product such as, for example, a round or square bar, a seamless tube, a plate or a sheet, having a bainitic structure, and, at 20 ° C., a resistance tensile Rm ⁇ 1000 MPa, a yield strength to tensile strength ratio Rp0,2 / Rm ⁇ 0.78, a necking Z ⁇ 55% and a resilience Mesnager Km ⁇ 45 J / cm 2 , said steel product consisting of a steel whose chemical composition comprises, by weight: 0.06% ⁇ C ⁇ 0.11% 1% ⁇ Mn ⁇ 1.7% 0.15% ⁇ If ⁇ 0.40% 0.025% ⁇ S ⁇ 0.10% P ⁇ 0.025% 0% ⁇ Ni ⁇ 0.25% 0.5% ⁇ Cr ⁇ 1.20% 0.08% ⁇ Mo ⁇ 0.13% 0% ⁇ Cu ⁇ 0.25% 0.003% ⁇ Al ⁇ 0.035% 0% ⁇ Ti ⁇ 0.035%
  • the characteristic dimension of the steel product is between 10 mm and 50 mm.
  • the invention relates to a method of manufacturing a mechanical mechanical part of steel whose mechanical characteristics at 20 ° C are: Rm ⁇ 1000 MPa Rp0.2 / Rm ⁇ 0.78 Z ⁇ 55% Km ⁇ 45 J / cm 2 according to which a steel product according to the invention is supplied and a machining is carried out.
  • the chemical composition must satisfy the relationship: Mn + Cr + Mo ⁇ 2.1%
  • This steel is cast in the form of a semi-finished product such as an ingot, a bloom, a billet or a slab which is hot rolled after reheating at a temperature above 1000 ° C and below or equal to 1250 ° C to form a steel product such as a round or square section bar, a profile, a plate, a wire, a seamless tube or a sheet metal.
  • the steel product is subjected to a heat treatment to give it a bainitic structure having the desired mechanical characteristics, namely: Rm ⁇ 1000 MPa Rp0.2 / Rm ⁇ 0.78 Z ⁇ 55% Km ⁇ 45 J / cm 2 Km being Mesnager resilience.
  • the mechanical part is then machined in the steel product, and there is no need for additional heat treatment.
  • the first embodiment has the advantage of not comprising any reheating after rolling.
  • the second embodiment includes reheating additional but it has the advantage of leading to a greater refinement of the grain, which is particularly favorable to impact resistance and ductility.
  • the characteristic dimension of the steel product i.e. the dimension that determines the distribution of cooling rates in the mass, between 10 mm and 50 mm.
  • This characteristic dimension is, for example, for a round bar, the diameter; for a section bar square, the length of one side of the square; for a plate or a dish, the thickness.
  • a mechanical part was made consisting of a solid axis comprising two cylindrical parts of diameter 48 mm and 46 mm, from a steel steel product in accordance with the invention.
  • the steel was rolled in the form a 49 mm diameter round bar, after having heated it to 1180 ° C.
  • the end of rolling temperature was 1020 ° C.
  • machining was carried out by removing chips using a tool comprising a carbide plate coated with Ti (C, N) + Al 2 O 3 , up to 48 mm for the part main and 46 mm for the remaining part, did not present any particular difficulties.
  • the steel was hot rolled to obtain a dish and the end of rolling temperature was 1010 ° C., then it was cooled from 980 ° C. to 58 ° C., ie Ms - 405 ° C., at the average cooling rate of 0.75 ° C / s, before being reheated to the temperature of 940 ° C, i.e. Ac 3 + 72 ° C, then cooled to 28 ° C, i.e. Bs - 601 ° C, at the average cooling rate of 39 ° C / s.
  • the dish was machined without difficulty by cutting to length, then machined, also without difficulty, to drill fixing holes for 10 mm diameter with a 10 mm diameter drill with inserts made of HSCO 6-5-2-5 high-alloy steel coated with TiN.
  • This steel was hot rolled and then subjected to heat treatment oil quenching followed by tempering.
  • the austenitization and income had to be adjusted, the first to 875 ° C and the second to 590 ° C, to obtain the same hardness as with the steel according to the invention, namely 330 HB.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Steel (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Coating With Molten Metal (AREA)

Claims (5)

  1. Walzstahlprodukt, gekennzeichnet durch eine bainitische Struktur und dadurch, dass seine mechanischen Eigenschaften bei 20°C sind: Rm ≥ 1000 MPa Rp0,2/Rm ≥ 0,78 Z ≥ 55% Km ≥ 45 J/cm2 sowie dadurch, dass es aus einem Stahl besteht, dessen chemische Zusammensetzung in Gew% umfasst: 0,06% ≤ C ≤ 0,11% 1% ≤ Mn ≤ 1,7% 0,15% ≤ Si ≤ 0,40% 0,025% ≤ S ≤ 0,10% P ≤ 0,025% 0% ≤ Ni ≤ 0,25% 0,5% ≤ Cr ≤ 1,20% 0,08% ≤ Mo ≤ 0,13% 0% ≤ Cu ≤ 0,25% 0,003% ≤ Al ≤ 0,035% 0% ≤ Ti ≤ 0,035% 0% ≤ V ≤ 0,10% 0% ≤ Nb ≤ 0,06% 0,0008% ≤ B ≤ 0,0040% 0,0060% ≤ N ≤ 0,011% und gegebenenfalls ein oder mehrere Elemente, ausgewählt aus bis zu 0,010% Te, bis zu 0,025% Se, bis zu 0,13% Bi, bis zu 0,090% Pb, bis zu 0,0040% Ca, wobei der Rest aus Eisen und aus der Verarbeitung stammenden Verunreinigungen stammt, wobei die chemische Zusammensetzung zudem die Beziehungen erfüllt: Mn + Cr + Mo ≥ 2,1% 0,015% ≤ V + Nb + Ti ≤ 0,13% Al + Ti ≥ 0,020% Mn/S ≥ 12
  2. Stahlprodukt nach Anspruch 1, dadurch gekennzeichnet, dass seine charakteristischen Abmessungen von 10 mm bis 50 mm reichen.
  3. Verfahren zur Herstellung eines Stahlproduktes nach Anspruch 1 oder Anspruch 2, dadurch gekennzeichnet, dass:
    ein Zwischenerzeugnis aus Stahl erhalten wird, dessen chemische Zusammensetzung in Gew% umfasst: 0,06% ≤ C ≤ 0,11% 1% ≤ Mn ≤ 1,7% 0,15% ≤ Si ≤ 0,40% 0,025% ≤ S ≤ 0,10% P ≤ 0,025% 0% ≤ Ni ≤ 0,25% 0,5% ≤ Cr ≤ 1,20% 0,08% ≤ Mo ≤ 0,13% 0% ≤ Cu ≤ 0,25% 0,003% ≤ Al ≤ 0,035% 0% ≤ Ti ≤ 0,035% 0% ≤ V ≤ 0,10% 0% ≤ Nb ≤ 0,06% 0,0008% ≤ B ≤ 0,0040% 0,0060% ≤ N ≤ 0,011% und gegebenenfalls ein oder mehrere Elemente, ausgewählt aus bis zu 0,010% Te, bis zu 0,025% Se, bis zu 0,13% Bi, bis zu 0,090% Pb, bis zu 0,0040% Ca, wobei der Rest aus Eisen und aus der Verarbeitung stammenden Verunreinigungen stammt, wobei die chemische Zusammensetzung zudem die Beziehungen erfüllt: Mn + Cr + Mo ≥ 2,1% 0,015% ≤ V + Nb + Ti ≤ 0,13% Al + Ti ≥ 0,020% Mn/S ≥ 12,
    das Zwischenerzeugnis bis auf eine Temperatur über 1000°C erhitzt und gewalzt wird, um ein Stahlprodukt herzustellen,
    das Stahlprodukt direkt nach dem Walzen mit einer mittleren Abkühlgeschwindigkeit über oder gleich 0,5°C/s bis auf eine Temperatur unter oder gleich Ms - 350° gekühlt wird, wobei Ms die Maximaltemperatur ist, bei der die martensitische Umwandlung des Stahls beginnt,
    das Stahlprodukt erneut bis auf eine Temperatur über Ac3 und zwischen 910°C und 980°C erhitzt wird
    und es mit einer mittleren Abkühlgeschwindigkeit zwischen 17°C/s und 150°C/s bis auf eine Temperatur unter oder gleich Bs - 450° gekühlt wird und man es dann bis auf Umgebungstemperatur abkühlen lässt.
  4. Verfahren zur Herstellung eines Stahlproduktes nach Anspruch 1 oder Anspruch 2, dadurch gekennzeichnet, dass:
    ein Zwischenerzeugnis aus Stahl erhalten wird, dessen chemische Zusammensetzung in Gew% umfasst: 0,06% ≤ C ≤ 0,11% 1% ≤ Mn ≤ 1,7% 0,15% ≤ Si ≤ 0,40% 0,025% ≤ S ≤ 0,10% P ≤ 0,025% 0% ≤ Ni ≤ 0,25% 0,5% ≤ Cr ≤ 1,20% 0,08% ≤ Mo ≤ 0,13% 0% ≤ Cu ≤ 0,25% 0,003% ≤ Al ≤ 0,035% 0% ≤ Ti ≤ 0,035% 0% ≤ V ≤ 0,10% 0% ≤ Nb ≤ 0,06% 0,0008% ≤ B ≤ 0,0040% 0,0060% ≤ N ≤ 0,011% und gegebenenfalls ein oder mehrere Elemente, ausgewählt aus bis zu 0,010% Te, bis zu 0,025% Se, bis zu 0,13% Bi, bis zu 0,090% Pb, bis zu 0,0040% Ca, wobei der Rest aus Eisen und aus der Verarbeitung stammenden Verunreinigungen stammt, wobei die chemische Zusammensetzung zudem die Beziehungen erfüllt : Mn + Cr + Mo ≥ 2,1% 0,015% ≤ V + Nb + Ti ≤ 0,13% Al + Ti ≥ 0,020% Mn/S ≥ 12,
    das Zwischenerzeugnis bis auf eine Temperatur über 1000°C erhitzt und gewalzt wird, um ein Stahlprodukt herzustellen, das man auf natürliche Weise bis auf eine Temperatur zwischen 920°C und 980°C abkühlen lässt,
    und das Stahlprodukt mit einer mittleren Abkühlgeschwindigkeit zwischen 17°C/s und 150°C/s bis auf eine Temperatur unter oder gleich Bs - 400° gekühlt wird, wobei Bs die Temperatur bei Beginn der bainitischen Umwandlung des Stahls bei der wirksamen Abkühlgeschwindigkeit ist, und man es dann bis auf Umgebungstemperatur abkühlen lässt.
  5. Verfahren zur Herstellung eines Maschinenteils aus Stahl, dessen mechanische Eigenschaften bei 20°C sind: Rm ≥ 1000 MPa Rp0,2/Rm ≥ 0,78 Z ≥ 55% Km ≥ 45 J/cm2, dadurch gekennzeichnet, dass ein Stahlprodukt nach Anspruch 1 erhalten wird und dadurch, dass eine Bearbeitung durchgeführt wird.
EP97402787A 1996-11-26 1997-11-20 Stahlprodukt aus bainitischem Stahl sowie Verfahren zur Herstellung des Stahlproduktes Expired - Lifetime EP0845544B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9614434A FR2756298B1 (fr) 1996-11-26 1996-11-26 Acier et procede pour la fabrication d'une piece de mecanique ayant une structure bainitique
FR9614434 1996-11-26

Publications (2)

Publication Number Publication Date
EP0845544A1 EP0845544A1 (de) 1998-06-03
EP0845544B1 true EP0845544B1 (de) 2003-01-02

Family

ID=9498012

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97402787A Expired - Lifetime EP0845544B1 (de) 1996-11-26 1997-11-20 Stahlprodukt aus bainitischem Stahl sowie Verfahren zur Herstellung des Stahlproduktes

Country Status (6)

Country Link
EP (1) EP0845544B1 (de)
AT (1) ATE230443T1 (de)
DE (1) DE69718132T2 (de)
ES (1) ES2190514T3 (de)
FR (1) FR2756298B1 (de)
NO (1) NO975392L (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2802607B1 (fr) 1999-12-15 2002-02-01 Inst Francais Du Petrole Conduite flexible comportant des armures en acier bas carbone
FR2807068B1 (fr) * 2000-03-29 2002-10-11 Usinor Acier lamine a chaud a tres haute limite d'elasticite et resistance mecanique utilisable notamment pour la realisation de piece de vehicules automobiles
JP2003096534A (ja) * 2001-07-19 2003-04-03 Mitsubishi Heavy Ind Ltd 高強度耐熱鋼、高強度耐熱鋼の製造方法、及び高強度耐熱管部材の製造方法
EP2309012B1 (de) * 2003-09-30 2012-09-12 Nippon Steel Corporation Kalt gewalztes Stahlblech mit hohem Streckgrenzenverhältnis und hoher Festigkeit und feuerverzinktes, dünnes, kalt gewalztes Stahlblech mit hohem Streckgrenzenverhältnis und hoher Festigkeit mit hervorragender Schweissbarkeit und Duktilität sowie legiertes, feuerverzinktes, dünnes, kalt gewalztes Stahlblech mit hohem Streckgrenzenverhältnis und hoher Festigkeit und Herstellungsverfahren dafür
SI2103704T1 (sl) 2008-03-10 2012-11-30 Swiss Steel Ag Vroče valjani dolg proizvod in postopek za njegovo izdelavo
FR2958660B1 (fr) * 2010-04-07 2013-07-19 Ascometal Sa Acier pour pieces mecaniques a hautes caracteristiques et son procede de fabrication.
EP2453026A1 (de) 2010-11-10 2012-05-16 Swiss Steel AG Warmumgeformtes Stahlprodukt und Verfahren zu dessen Herstellung
WO2013117953A1 (en) * 2012-02-10 2013-08-15 Ascometal Process for making a steel part, and steel part so obtained
US20160138142A1 (en) 2014-11-18 2016-05-19 Air Liquide Large Industries U.S. Lp Materials of construction for use in high pressure hydrogen storage in a salt cavern

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5524932A (en) * 1978-08-08 1980-02-22 Nippon Steel Corp Manufacture of bainite tough hardening steel
JPS59110721A (ja) * 1982-12-14 1984-06-26 Nippon Steel Corp 硫化物応力腐食割れ抵抗性に優れた低合金高張力鋼の製造方法
DE3571254D1 (en) * 1985-02-16 1989-08-03 Ovako Oy Method and steel alloy for producing high-strength hot forgings
GB8603500D0 (en) * 1986-02-13 1986-03-19 Hunting Oilfield Services Ltd Steel alloys
JPH0565540A (ja) * 1991-09-10 1993-03-19 Nissan Motor Co Ltd 高強度ボルトの製造方法
FR2685708B1 (fr) * 1991-12-30 1994-07-22 Ascometal Sa Produit long pour la fabrication par formage a froid, notamment par frappe a froid, de produits elabores tels que des boulons et procede de fabrication d'un produit a froid.
JPH06248341A (ja) * 1993-02-23 1994-09-06 Sumitomo Metal Ind Ltd 非調質鋼からの高強度高靱性鋼の製造方法
FR2741632B1 (fr) * 1995-11-27 1997-12-26 Ascometal Sa Acier pour la fabrication d'une piece forgee ayant une structure bainitique et procede de fabrication d'une piece

Also Published As

Publication number Publication date
FR2756298B1 (fr) 1998-12-24
NO975392D0 (no) 1997-11-24
ES2190514T3 (es) 2003-08-01
EP0845544A1 (de) 1998-06-03
FR2756298A1 (fr) 1998-05-29
DE69718132T2 (de) 2003-10-09
ATE230443T1 (de) 2003-01-15
NO975392L (no) 1998-05-27
DE69718132D1 (de) 2003-02-06

Similar Documents

Publication Publication Date Title
EP0709481B1 (de) Niedrig legierter Stahl zur Herstellung von Spritzformen für plastische Werkstoffe oder für Gegenstände aus Gummi
EP0792944B1 (de) Stahl, geeignet für die Herstellung von Spritzgussformen für plastische Werkstoffe
EP1649069B1 (de) Verfahren zur herstellung von blechen aus austenitischem eisen/kohlenstoff/mangan-stahl mit hoher festigkeit und hervorragender zähigkeit und kaltumformbarkeit, und so hergestellte bleche
EP0805220B1 (de) Niedrig legiertes Stahl für die Herstellung von Pressformen für Plastikwerkstoffen
EP1563103B1 (de) Verfahren zum herstellen eines abriebfesten stahlblechs und so hergestelltes stahlblech
EP0851038B1 (de) Stahl und Verfahren zur Formung eines Stahlwerkstückes durch kalte plastische Verarbeitung
EP0787812B1 (de) Herstellungsverfahren eines Stahlschmiedestücks
FR2847272A1 (fr) Procede pour fabriquer une tole en acier resistant a l'abrasion et tole obtenue
EP0775756B1 (de) Stahl für die Herstellung von Schmiedestücken mit bainitischer Struktur, und Herstellungsverfahren dieser Erzeugnisse
EP0845544B1 (de) Stahlprodukt aus bainitischem Stahl sowie Verfahren zur Herstellung des Stahlproduktes
EP0209437B1 (de) Leicht legierter, geschmiedeter Stahlzylinder zum Kaltwalzen
EP1051531B1 (de) Stahl und verfahren zur herstellung von teilbaren maschinenteilen
WO2004048631A1 (fr) Piece d’acier de construction soudable et procede de fabrication
EP1587963B1 (de) Hochfester warmgewalzter stahl und verfahren zur herstellung von bändern
EP1379706B1 (de) Werkzeugstahl von hoher zähigkeit, verfahren zum herstellen von teilen aus diesem stahl und so hergestellte teile
EP2257652B1 (de) Herstellungsverfahren von rostfreien austenitischen stahlblechen mit hohen mechanischen eigenschaften
CZ20013818A3 (cs) Ocelový obráběcí stroj k obrábění kovů za studena, jeho vyuľití a výroba
EP0550294B1 (de) Rohfabrikate grosser Länge für Herstellungsverfahren durch Kaltumformen, insbesondere für Kaltstauchen von formgebend bearbeitete Erzeugnisse wie Bolzen, und Verfahren zur Herstellung dieser kaltgeformten Gegenstände
EP0493218A1 (de) Verfahren zur Herstellung eines nichtrostenden Stahles mit ferritisch-martensitischem Mischgefüge und so hergestelltes Stahl
FR2777023A1 (fr) Composition d'acier a outils
EP1565587A1 (de) Gebrauchsfertiges mechanisches teil aus stahl mit niedrigem kohlenstoffgehalt fur plastische verformung und herstellungsverfahren
EP0902094A1 (de) Verfahren zum Herstellen eines mechanischen Werkstücks mit mindestens ein mittels Induktion oberflächengehartetes Teil und also hergestelltes Werkstück
EP0526330B1 (de) Verfahren zum Herstellen dünnwandiger Rohre, Stahl zum Herstellen dieser Rohre und nach diesem Verfahren hergestellte Rohre für Fahrradrahmen
EP0181791B1 (de) Niedriglegierter Manganstahl für Fahrradrahmenrohre, entsprechendes Rahmenrohr und dessen Herstellungsverfahren
EP0497642A1 (de) Verfahren zum Herstellen von massiven Stahlwerkstücken und so hergestellte Werkstücke

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

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FI FR GB IT LI LU NL PT SE

17P Request for examination filed

Effective date: 19981203

AKX Designation fees paid

Free format text: AT BE CH DE DK ES FI FR GB IT LI LU NL PT SE

RBV Designated contracting states (corrected)

Designated state(s): AT BE CH DE DK ES FI FR GB IT LI LU NL PT SE

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

17Q First examination report despatched

Effective date: 20020411

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE DK ES FI FR GB IT LI LU NL PT SE

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: 20030102

REF Corresponds to:

Ref document number: 230443

Country of ref document: AT

Date of ref document: 20030115

Kind code of ref document: T

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: 20030102:NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20030104

REF Corresponds to:

Ref document number: 69718132

Country of ref document: DE

Date of ref document: 20030206

Kind code of ref document: P

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: 20030402

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: 20030402

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2190514

Country of ref document: ES

Kind code of ref document: T3

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: 20031003

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

Ref country code: LU

Payment date: 20081021

Year of fee payment: 12

Ref country code: DE

Payment date: 20081113

Year of fee payment: 12

Ref country code: CH

Payment date: 20081015

Year of fee payment: 12

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

Ref country code: FI

Payment date: 20081106

Year of fee payment: 12

Ref country code: ES

Payment date: 20081120

Year of fee payment: 12

Ref country code: AT

Payment date: 20081021

Year of fee payment: 12

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

Ref country code: SE

Payment date: 20081028

Year of fee payment: 12

Ref country code: BE

Payment date: 20081215

Year of fee payment: 12

Ref country code: IT

Payment date: 20081114

Year of fee payment: 12

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

Ref country code: FR

Payment date: 20081117

Year of fee payment: 12

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

Ref country code: GB

Payment date: 20081107

Year of fee payment: 12

BERE Be: lapsed

Owner name: *ASCOMETAL

Effective date: 20091130

EUG Se: european patent has lapsed
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: 20091120

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20100730

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

Ref country code: FI

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

Effective date: 20091120

Ref country code: AT

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

Effective date: 20091120

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: 20091130

Ref country code: FR

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

Effective date: 20091130

Ref country code: CH

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

Effective date: 20091130

Ref country code: BE

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

Effective date: 20091130

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

Ref country code: DE

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

Effective date: 20100601

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

Ref country code: GB

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

Effective date: 20091120

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20110303

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: 20091120

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: 20091120

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

Ref country code: SE

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

Effective date: 20091121

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

Ref country code: ES

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

Effective date: 20110302

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

Ref country code: ES

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

Effective date: 20091121