EP0779375B1 - Acier pour la fabrication de pièces de mécanique sécables et pièce obtenue - Google Patents
Acier pour la fabrication de pièces de mécanique sécables et pièce obtenue Download PDFInfo
- Publication number
- EP0779375B1 EP0779375B1 EP96402534A EP96402534A EP0779375B1 EP 0779375 B1 EP0779375 B1 EP 0779375B1 EP 96402534 A EP96402534 A EP 96402534A EP 96402534 A EP96402534 A EP 96402534A EP 0779375 B1 EP0779375 B1 EP 0779375B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- steel
- chemical composition
- mpa
- steel according
- less
- 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
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
Definitions
- the present invention relates to a steel for manufacturing a part of breakable mechanics, and in particular for the manufacture of a connecting rod for internal combustion engine.
- connection rods internal combustion engine consist of at least two elements separable assembled by fixing means such as screws.
- These parts can be cast iron, sintered and forged metal powder, or forged steel.
- the invention relates to parts, and in particular connecting rods, in forged steel.
- the steel constituting the forged steel connecting rods must be forgeable, easily machinable and have mechanical characteristics allowing to ensure good service life of the connecting rods. Characteristics mechanical properties generally required are a hardness of between 210 HB and 360 HB and a breaking strength of between 650 MPa and 1200 MPa. to obtain sufficient resistance to fatigue, and an elastic limit included between 300 MPa and 800 MPa in order to avoid deformation by exceeding the elastic limit.
- the precise choice of characteristics required for a particular connecting rod intended for a particular engine depends on the design of the rod and the nature of the engine in which it is incorporated.
- the steel which constitutes it is chosen in function of these mechanical characteristics and the manufacturing process which includes, after forging, a controlled cooling intended to obtain a ferrito-pearlitic structure which has mechanical characteristics required and satisfactory machinability.
- the steels used are, in general carbon steels like XC42 or low alloy steels like 45M5, 30MSV6, 38MVS5 (according to French standard).
- the carbon content is chosen mainly according to the level of hardness required, and the elements of alloy are added either to increase the hardenability of the steel so increase the proportion of perlite, which is favorable for machinability, i.e. to harden ferrite and improve the yield strength to strength ratio rupture.
- the separation of the different parts of the connecting rod does not can only be done by machining which requires a complex machining range and expensive.
- Impurities taken among P, Si, Ni, V, Cu, Cr and Mo having individual contents preferably such as: Ni ⁇ 0.2%, Mo ⁇ 0.02%, Cr ⁇ 0.1%, Cu ⁇ 0.15% V ⁇ 0.035% 0.15% ⁇ If ⁇ 0.35%, and P ⁇ 0.03%.
- this steel which is of the XC70 type (according to the French standard), has the disadvantage of having an irregular behavior during the fragile rupture operation, in particular because, it is practically impossible to control industrially the proportion of proeutectoid phase, this can vary from 0% to 15% depending on the exact chemical analysis of the steel and the means of manufacture used, which makes it difficult to use industrially, moreover, it only makes it possible to obtain the characteristics specific to the XC70 which limits its use to parts for which these characteristics are suitable.
- the object of the present invention is to remedy these drawbacks by offering a steel which makes it possible to obtain the mechanical characteristics required for a wide range of applications, particularly in the field connecting rods, and good machinability, while allowing the operation to be carried out brittle failure under satisfactory industrial conditions.
- the invention relates to a steel for the manufacture of a breakable mechanical part whose chemical composition comprises, by weight: 0.25% ⁇ C ⁇ 0.75%, 0.2% ⁇ If ⁇ 1.5%, 0.1% ⁇ Mn ⁇ 2%, 0% ⁇ Ni ⁇ 1%, 0% ⁇ Cr ⁇ 1%, 0% ⁇ Mo ⁇ 1%, 0% ⁇ Cu ⁇ 1%, 0% ⁇ V ⁇ 0.2%, 0.02% ⁇ S ⁇ 0.35%, 0.04% ⁇ P ⁇ 0.2%, 0% ⁇ Al ⁇ 0.005%, 0.005% ⁇ N ⁇ 0.02%, possibly at minus one element taken from lead, tellurium and selenium in contents less than 0.1%, the remainder being iron and impurities resulting from elaboration, the steel possibly being treated with calcium.
- the chemical composition of the steel satisfies at least one of the following relationships: 0.06% ⁇ P ⁇ 0.12%, 0.8% ⁇ If ⁇ 1.2%, 0.05% ⁇ V ⁇ 0.15%.
- the chemical composition of the steel can be such that: 0.65% ⁇ C ⁇ 0.75%, 0.25% ⁇ Mn ⁇ 1%, Ni ⁇ 0.15%, Cr ⁇ 0.15%, Mo ⁇ 0.05%, Cu ⁇ 0.35%
- the chemical composition of the steel can also be such that: 0.25% ⁇ C ⁇ 0.5%, Ni ⁇ 0.15%, Cr ⁇ 0.15%, Mo ⁇ 0.05%, Cu ⁇ 0.35%, preferably with 0.25% ⁇ Mn ⁇ 1.3%.
- the invention also relates to the use of a steel according to the invention for the manufacture of a mechanical part comprising at least two elements obtained by fragile rupture of a blank of said part, as well as said piece.
- This part can be, in particular, a connecting rod for a motor internal combustion consisting for example of a steel whose hardness is between 210 HB and 360 HB, the breaking strength is between 650 MPa and 1200 MPa, with a majority of relatively large grains, of which the ASTM size index of the austenitic grains is less than 5, having, preferably, a structure comprising at least 70% perlite.
- a steel close to the eutectoid comprising from 0.65% to 0.75% of carbon, less than 1% silicon, 0.25% to 1% manganese, less than 0.15% nickel, less than 0.15% chromium, less than 0.05% molybdenum, less than 0.35% copper and less than 0.005% aluminum.
- This steel can be carbon steel, at which case it contains less than 0.5% manganese. But it can be also a steel weakly alloyed with manganese, silicon, or possibly with vanadium. It can then contain between 1% and 2% of manganese, and / or between 0.5% and 1.5% of silicon, and / or between 0.5% and 0.2% of vanadium.
- the blanks were then machined and then separated in half elements by fragile rupture. This separation by fragile rupture was made without difficulty whatever the ferrite content.
- the blanks were then machined and then separated in half elements by fragile rupture. This separation by fragile rupture was made without difficulty whatever the ferrite content.
- the blanks were then machined and then separated in half elements by fragile rupture. This separation by fragile rupture was made without difficulty whatever the ferrite content.
Description
- plus de 0,25% de carbone pour permettre d'obtenir une structure ferrito-perlitique ou perlitique de dureté supérieure à 210 HB, mais moins de 0,75% de façon à éviter la formation de carbures de fer défavorables à l'usinabilité;
- de 0,04% à 0,2% de phosphore, et de préférence, de 0,06% à 0,12% afin de fragiliser la structure, et en particulier la ferrite, obtenue après forgeage et traitement thermique; notamment lorsque la structure est essentiellement perlitique, cette teneur en phosphore permet d'obtenir une bonne reproductibilité de la rupture fragile d'ébauches de pièces de mécanique; de préférence, la teneur en phosphore doit être telle que: P ≥ 0,18 - 0,2 x C . On obtient ainsi une résilience Kcv inférieure à environ 7 Joules à la température ambiante, nécessaire pour obtenir une bonne aptitude à la rupture 100% fragile avec une déformation latérale inférieure ou égale à 120 µm;
- moins de 0,005% et de préférence moins de 0,003% d'aluminium afin d'éviter la présence d'inclusions d'alumine défavorables à l'usinabilité, et également pour éviter la formation de nitrures d'aluminium qui empêchent le grain de grossir pendant le réchauffage avant forgeage, ce qui est défavorable à l'aptitude à la rupture fragile;
- de 0,2% à 1,5% de silicium; le silicium est un élément désoxydant qui doit être ajouté en des teneurs supérieures à 0,2% pour assurer une bonne désoxydation, mais, en plus fortes teneurs cet élément durcit et fragilise la ferrite ce qui est favorable à une bonne usinabilité; pour obtenir cet effet favorable, sa teneur peut être fixée entre 0,8% et 1,2%;
- de 0% à 0,2%, et, de préférence, de 0,05% à 0,15% de vanadium pour durcir la ferrite et améliorer le rapport limite d'élasticité sur résistance à la rupture;
- de 0,02% à 0,35% , et de préférence, de 0,05% à 0,12% de soufre pour améliorer l'usinabilité;
- éventuellement, au moins un élément pris parmi le plomb, le tellure et le sélénium en des teneurs inférieures à 0,1% de façon à améliorer l'usinabilité;
- de 0,1% à 2% de manganèse et de préférence plus de 0,25% afin de fixer le soufre sous forme de sulfures de manganèse, et dans ce cas, la teneur en soufre peut être limitée à 1%; mais, le manganèse peut également être ajouté pour augmenter la trempabilité afin d'abaisser la température de début de transformation ferrito-perlitique et ainsi de limiter la teneur en ferrite, ce qui est favorable à l'usinabilité;
- éventuellement un ou plusieurs éléments pris parmi le nickel, le chrome, le molybdène et le cuivre, en des teneurs comprises entre 0% et 1% afin d'ajuster la trempabilité; lorsque ces éléments ne sont pas ajoutés volontairement, ils peuvent néanmoins exister à titre de résiduels apportés par les matières premières lors de l'élaboration, dans ce cas, les teneurs en nickel et en chrome sont inférieures à 0,15%, la teneur en molybdène est inférieure à 0,05% et la teneur en cuivre est inférieure à 0,35%.
Claims (12)
- Acier pour la fabrication d'une pièce de mécanique sécable caractérisé en ce que sa composition chimique comprend, en poids:0,25% ≤ C ≤ 0,75%0,2% ≤ Si ≤ 1,5%0,1% ≤ Mn ≤ 2%0% ≤ Ni ≤ 1%0% ≤ Cr ≤ 1%0% ≤ Mo ≤ 1%0% ≤ Cu ≤ 1%0% ≤ V ≤ 0,2%0,02% ≤ S ≤ 0,35%0,04% ≤ P ≤ 0,2%0% ≤ Al ≤ 0,005%0,005% ≤ N ≤ 0,02%éventuellement au moins un élément pris parmi le plomb, le tellure et le sélénium en des teneurs inférieures à 0,1%,
- Acier selon la revendication 1 caractérisé en ce que sa composition chimique est telle que:
0,06% ≤ P ≤ 0,12% - Acier selon la revendication 1 ou la revendication 2 caractérisé en ce que sa composition chimique est telle que:
0,8% ≤ Si ≤ 1,2% - Acier selon l'une quelconque des revendications 1 à 3 caractérisé en ce que sa composition chimique est telle que:
0,05% ≤ V ≤ 0,15% - Acier selon l'une quelconque des revendications 1 à 4 caractérisé en ce que sa composition chimique est telle que:0,65% ≤ C ≤ 0,75%0,25% ≤ Mn ≤ 1%Ni ≤ 0,15%Cr ≤ 0,15%Mo ≤ 0,05%Cu ≤ 0,35%Al ≤ 0,005%
- Acier selon l'une quelconque des revendications 1 à 4 caractérisé en ce que sa composition chimique est telle que:0,25% ≤ C ≤ 0,5%Ni ≤ 0,15%Cr ≤ 0,15%Mo ≤ 0,05%Cu ≤ 0,35%
- Acier selon la revendication 6 caractérisé en ce que sa composition chimique est telle que:
0,25% ≤ Mn ≤ 1,3% - Utilisation d'un acier selon l'une quelconque des revendications 1 à 7 pour la fabrication d'une pièce de mécanique comportant au moins deux éléments obtenue par rupture fragile d'une ébauche.
- Utilisation d'un acier selon la revendication 8 caractérisée en ce que la pièce a une structure ferrito-perlitique.
- Pièce de mécanique comportant au moins deux éléments obtenue par rupture fragile d'une ébauche, et notamment bielle par exemple pour moteur à combustion interne, caractérisée en ce que elle est constituée d'un acier selon l'une quelconque des revendications 1 à 7.
- Pièce selon la revendication 10 caractérisée en ce que l'acier qui la constitue a une dureté comprise entre 210 HB et 360 HB, une résistance à la rupture comprise entre 650 MPa et 1200 MPa, et une majorité de grains dont l'indice de taille ASTM de grain austénitique est inférieur à 5.
- Pièce selon la revendication 10 ou la revendication 11 caractérisée en ce que l'acier qui la constitue a une structure comportant au moins 70% de perlite.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9514833 | 1995-12-14 | ||
FR9514833A FR2742448B1 (fr) | 1995-12-14 | 1995-12-14 | Acier pour la fabrication de pieces de mecanique secables et piece obtenue |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0779375A1 EP0779375A1 (fr) | 1997-06-18 |
EP0779375B1 true EP0779375B1 (fr) | 2000-06-07 |
Family
ID=9485504
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96402534A Expired - Lifetime EP0779375B1 (fr) | 1995-12-14 | 1996-11-26 | Acier pour la fabrication de pièces de mécanique sécables et pièce obtenue |
Country Status (17)
Country | Link |
---|---|
US (1) | US5769970A (fr) |
EP (1) | EP0779375B1 (fr) |
JP (1) | JPH09176796A (fr) |
KR (1) | KR970043238A (fr) |
CN (1) | CN1158908A (fr) |
AR (1) | AR004375A1 (fr) |
AT (1) | ATE193733T1 (fr) |
BR (1) | BR9606002A (fr) |
CA (1) | CA2192509A1 (fr) |
DE (1) | DE69608773T2 (fr) |
DK (1) | DK0779375T3 (fr) |
ES (1) | ES2148705T3 (fr) |
FR (1) | FR2742448B1 (fr) |
GR (1) | GR3034003T3 (fr) |
NO (1) | NO965318L (fr) |
PL (1) | PL192823B1 (fr) |
PT (1) | PT779375E (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008028447A1 (fr) | 2006-09-01 | 2008-03-13 | Georgsmarienhütte Gmbh | Acier et procédé de transformation pour produire des pièces mécaniques pouvant être séparées par rupture présentant une résistance accrue |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0856590B2 (fr) * | 1997-02-04 | 2005-12-28 | Daido Tokushuko Kabushiki Kaisha | Acier affiné non-thermique à haute résistance mécanique pour forgeage à chaud |
JP3445478B2 (ja) * | 1997-11-18 | 2003-09-08 | いすゞ自動車株式会社 | 機械構造用鋼及びそれを用いた破断分割機械部品 |
FR2774098B1 (fr) * | 1998-01-28 | 2001-08-03 | Ascometal Sa | Acier et procede pour la fabrication de pieces de mecanique secables |
GB2335200A (en) * | 1998-03-10 | 1999-09-15 | British Steel Plc | Steel composition |
JP3671688B2 (ja) * | 1998-08-28 | 2005-07-13 | 株式会社神戸製鋼所 | 破断分断性に優れた破断分割型コンロッド用熱間鍛造用非調質鋼 |
FR2800670B1 (fr) * | 1999-11-05 | 2003-04-18 | Fag Oem & Handel Ag | Bandage de roues ou roue monobloc pour des jeux de roues de vehicules ferroviaires |
US6395109B1 (en) * | 2000-02-15 | 2002-05-28 | Cargill, Incorporated | Bar product, cylinder rods, hydraulic cylinders, and method for manufacturing |
JP3893889B2 (ja) * | 2001-03-21 | 2007-03-14 | 大同特殊鋼株式会社 | 破断による分離が容易な熱間鍛造用非調質鋼 |
US6899667B2 (en) * | 2002-10-21 | 2005-05-31 | Paul F. Becker | Method and apparatus for the treatment of physical and mental disorders with low frequency, low flux density magnetic fields |
US7819794B2 (en) * | 2002-10-21 | 2010-10-26 | Becker Paul F | Method and apparatus for the treatment of physical and mental disorders with low frequency, low flux density magnetic fields |
JP4346404B2 (ja) * | 2002-11-20 | 2009-10-21 | 本田技研工業株式会社 | 低温での破断分離用非調質鋼及びこの非調質鋼からなる勘合部材 |
JP2005308189A (ja) * | 2004-04-26 | 2005-11-04 | Honda Motor Co Ltd | コネクティングロッド及びその製造方法 |
JP4763551B2 (ja) * | 2006-08-24 | 2011-08-31 | 住友金属工業株式会社 | 破断分離性と加工性に優れた機械構造用鋼およびその製造方法 |
WO2009069296A1 (fr) * | 2007-11-28 | 2009-06-04 | Kao Corporation | Agent d'élimination d'un biolfilm |
JP4264460B1 (ja) * | 2007-12-03 | 2009-05-20 | 株式会社神戸製鋼所 | 破断分割性および被削性に優れた破断分割型コネクティングロッド用鋼 |
CN102061995A (zh) * | 2010-11-26 | 2011-05-18 | 杭州汽轮铸锻有限公司 | 一种燃气轮机进气缸及制作工艺 |
FR3064282B1 (fr) * | 2017-03-23 | 2021-12-31 | Asco Ind | Acier, procede pour la fabrication de pieces mecaniques en cet acier, et pieces ainsi fabriquees |
CN109234626B (zh) * | 2018-07-18 | 2020-11-24 | 石家庄钢铁有限责任公司 | 一种易切削重载汽车轮毂轴承用钢及制造方法 |
CN114645208B (zh) * | 2022-03-23 | 2023-04-25 | 青海西钢特殊钢科技开发有限公司 | 一种采用碲处理的非调质胀断连杆用钢及其生产方法 |
CN114959501B (zh) * | 2022-06-29 | 2023-04-07 | 马鞍山钢铁股份有限公司 | 一种Te微合金化高碳胀断连杆用钢及制造方法和应用 |
CN115029640B (zh) * | 2022-06-29 | 2023-04-07 | 马鞍山钢铁股份有限公司 | 一种Te微合金化中碳胀断连杆用钢及制造方法和应用 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2182758A (en) * | 1938-05-14 | 1939-12-05 | Inland Steel Co | Steel |
US2182759A (en) * | 1938-08-15 | 1939-12-05 | Inland Steel Co | Steel |
US2402862A (en) * | 1943-03-25 | 1946-06-25 | Nat Tube Co | Well casing |
US4168159A (en) * | 1978-02-28 | 1979-09-18 | Latrobe Steel Company | High speed steels with phosphorus for improved cutting performance |
US4786466A (en) * | 1987-02-19 | 1988-11-22 | Frema, Inc. | Low-sulfur, lead-free free machining steel alloy |
US5055253A (en) * | 1990-07-17 | 1991-10-08 | Nelson & Associates Research, Inc. | Metallic composition |
US5135587A (en) * | 1991-04-01 | 1992-08-04 | Ford Motor Company | Machinable, strong, but crackable low ductility steel forging |
-
1995
- 1995-12-14 FR FR9514833A patent/FR2742448B1/fr not_active Expired - Fee Related
-
1996
- 1996-11-26 DK DK96402534T patent/DK0779375T3/da active
- 1996-11-26 ES ES96402534T patent/ES2148705T3/es not_active Expired - Lifetime
- 1996-11-26 PT PT96402534T patent/PT779375E/pt unknown
- 1996-11-26 AT AT96402534T patent/ATE193733T1/de not_active IP Right Cessation
- 1996-11-26 DE DE69608773T patent/DE69608773T2/de not_active Expired - Lifetime
- 1996-11-26 EP EP96402534A patent/EP0779375B1/fr not_active Expired - Lifetime
- 1996-12-10 KR KR1019960063848A patent/KR970043238A/ko not_active Application Discontinuation
- 1996-12-10 CA CA002192509A patent/CA2192509A1/fr not_active Abandoned
- 1996-12-11 AR ARP960105626A patent/AR004375A1/es unknown
- 1996-12-12 PL PL317455A patent/PL192823B1/pl unknown
- 1996-12-12 NO NO965318A patent/NO965318L/no unknown
- 1996-12-13 BR BR9606002A patent/BR9606002A/pt not_active IP Right Cessation
- 1996-12-13 JP JP8352891A patent/JPH09176796A/ja active Pending
- 1996-12-13 CN CN96119789A patent/CN1158908A/zh active Pending
- 1996-12-16 US US08/767,430 patent/US5769970A/en not_active Expired - Lifetime
-
2000
- 2000-07-24 GR GR20000401689T patent/GR3034003T3/el not_active IP Right Cessation
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008028447A1 (fr) | 2006-09-01 | 2008-03-13 | Georgsmarienhütte Gmbh | Acier et procédé de transformation pour produire des pièces mécaniques pouvant être séparées par rupture présentant une résistance accrue |
EP2057298A1 (fr) | 2006-09-01 | 2009-05-13 | Georgsmarienhütte GmbH | Acier et procédé de transformation pour produire des pièces mécaniques pouvant être séparées par rupture présentant une résistance accrue |
Also Published As
Publication number | Publication date |
---|---|
AR004375A1 (es) | 1998-11-04 |
FR2742448A1 (fr) | 1997-06-20 |
NO965318D0 (no) | 1996-12-12 |
CA2192509A1 (fr) | 1997-06-15 |
FR2742448B1 (fr) | 1998-01-16 |
BR9606002A (pt) | 1998-09-01 |
EP0779375A1 (fr) | 1997-06-18 |
ATE193733T1 (de) | 2000-06-15 |
PL192823B1 (pl) | 2006-12-29 |
NO965318L (no) | 1997-06-16 |
DK0779375T3 (da) | 2000-10-16 |
PT779375E (pt) | 2000-10-31 |
PL317455A1 (en) | 1997-06-23 |
CN1158908A (zh) | 1997-09-10 |
US5769970A (en) | 1998-06-23 |
JPH09176796A (ja) | 1997-07-08 |
DE69608773D1 (de) | 2000-07-13 |
ES2148705T3 (es) | 2000-10-16 |
KR970043238A (ko) | 1997-07-26 |
MX9606392A (es) | 1997-10-31 |
GR3034003T3 (en) | 2000-11-30 |
DE69608773T2 (de) | 2001-02-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0779375B1 (fr) | Acier pour la fabrication de pièces de mécanique sécables et pièce obtenue | |
JP4645593B2 (ja) | 機械構造用部品およびその製造方法 | |
KR0175075B1 (ko) | 증기터빈용 회전자 및 그 제조방법 | |
EP0629714B1 (fr) | Acier inoxydable martensitique à usinabilité améliorée | |
TWI494445B (zh) | 滲碳鋼零件(一) | |
CA2607446C (fr) | Acier martensitique durci, procede de fabrication d'une piece a partir de cet acier, et piece ainsi obtenue | |
JP4924422B2 (ja) | 低炭素硫黄快削鋼 | |
CA2694844C (fr) | Acier martensitique durci a teneur faible ou nulle en cobalt, procede de fabrication d'une piece a partir de cet acier, et piece ainsi obtenue | |
JPWO2008084749A1 (ja) | 被削性と強度特性に優れた機械構造用鋼 | |
CA2730520A1 (fr) | Acier martensitique durci a teneur faible en cobalt, procede de fabrication d'une piece a partir de cet acier, et piece ainsi obtenue | |
EP1979583A1 (fr) | Procédé de fabrication d'une soupape de moteur à explosion, et soupape ainsi obtenue | |
EP1051531B1 (fr) | Acier et procede pour la fabrication de pieces de mecanique secables | |
JP2006299296A (ja) | 疲労特性と耐結晶粒粗大化特性に優れた肌焼用圧延棒鋼およびその製法 | |
CA2559562C (fr) | Acier pour pieces mecaniques, procede de fabrication de pieces mecaniques l'utilisant et pieces mecaniques ainsi realisees | |
JP4972972B2 (ja) | Ni基合金 | |
JP2007154295A (ja) | 耐摩耗性鋳鋼およびその製造方法 | |
JP4470522B2 (ja) | 低靭延性快削性非調質鋼 | |
JP2007113071A (ja) | 転動疲労特性および結晶粒粗大化防止特性に優れた肌焼用鋼 | |
EP1379706B1 (fr) | Acier a outils a tenacite renforcee, procede de fabrication de pieces dans cet acier et pieces obtenues | |
US20050205168A1 (en) | Crankshaft | |
JP2007197747A (ja) | 球状黒鉛鋳鉄 | |
WO2016151390A1 (fr) | Pieces a structure bainitique a hautes proprietes de resistance et procede de fabrication | |
JP2008223083A (ja) | クランクシャフト及びその製造方法 | |
JP3255612B2 (ja) | 超快削鋼棒線材の製造方法及びそれによる超快削鋼棒線材 | |
JP3442706B2 (ja) | 快削鋼 |
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 GR IE IT LI LU MC NL PT SE |
|
17P | Request for examination filed |
Effective date: 19970707 |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
17Q | First examination report despatched |
Effective date: 19990824 |
|
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 |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: ASCOMETAL (SOCIETE ANONYME) |
|
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 GR IE IT LI LU MC NL PT SE |
|
REF | Corresponds to: |
Ref document number: 193733 Country of ref document: AT Date of ref document: 20000615 Kind code of ref document: T |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: FRENCH |
|
REF | Corresponds to: |
Ref document number: 69608773 Country of ref document: DE Date of ref document: 20000713 |
|
ITF | It: translation for a ep patent filed |
Owner name: BUGNION S.P.A. |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 20000816 |
|
REG | Reference to a national code |
Ref country code: DK Ref legal event code: T3 Ref country code: ES Ref legal event code: FG2A Ref document number: 2148705 Country of ref document: ES Kind code of ref document: T3 |
|
REG | Reference to a national code |
Ref country code: PT Ref legal event code: SC4A Free format text: AVAILABILITY OF NATIONAL TRANSLATION Effective date: 20000718 |
|
PLBQ | Unpublished change to opponent data |
Free format text: ORIGINAL CODE: EPIDOS OPPO |
|
PLBI | Opposition filed |
Free format text: ORIGINAL CODE: 0009260 |
|
PLBF | Reply of patent proprietor to notice(s) of opposition |
Free format text: ORIGINAL CODE: EPIDOS OBSO |
|
PLBF | Reply of patent proprietor to notice(s) of opposition |
Free format text: ORIGINAL CODE: EPIDOS OBSO |
|
26 | Opposition filed |
Opponent name: GEORGSMARIENHUETTE GMBH Effective date: 20010228 |
|
NLR1 | Nl: opposition has been filed with the epo |
Opponent name: GEORGSMARIENHUETTE GMBH |
|
PLBF | Reply of patent proprietor to notice(s) of opposition |
Free format text: ORIGINAL CODE: EPIDOS OBSO |
|
PLBF | Reply of patent proprietor to notice(s) of opposition |
Free format text: ORIGINAL CODE: EPIDOS OBSO |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
PLBO | Opposition rejected |
Free format text: ORIGINAL CODE: EPIDOS REJO |
|
PLBN | Opposition rejected |
Free format text: ORIGINAL CODE: 0009273 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: OPPOSITION REJECTED |
|
27O | Opposition rejected |
Effective date: 20021029 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: MC Payment date: 20091021 Year of fee payment: 14 Ref country code: LU Payment date: 20091117 Year of fee payment: 14 Ref country code: IE Payment date: 20091027 Year of fee payment: 14 Ref country code: DK Payment date: 20091022 Year of fee payment: 14 Ref country code: CH Payment date: 20091117 Year of fee payment: 14 Ref country code: AT Payment date: 20091020 Year of fee payment: 14 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: PT Payment date: 20091023 Year of fee payment: 14 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GR Payment date: 20091021 Year of fee payment: 14 Ref country code: BE Payment date: 20091221 Year of fee payment: 14 |
|
BERE | Be: lapsed |
Owner name: S.A. *ASCOMETAL Effective date: 20101130 |
|
REG | Reference to a national code |
Ref country code: PT Ref legal event code: MM4A Free format text: LAPSE DUE TO NON-PAYMENT OF FEES Effective date: 20110526 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20101130 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
REG | Reference to a national code |
Ref country code: DK Ref legal event code: EBP |
|
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 NON-PAYMENT OF DUE FEES Effective date: 20110526 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20101130 Ref country code: GR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20110602 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20101130 |
|
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 NON-PAYMENT OF DUE FEES Effective date: 20101126 Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20101130 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: MM4A |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DK Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20101130 Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20101126 |
|
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: 20101126 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FI Payment date: 20141023 Year of fee payment: 19 Ref country code: FR Payment date: 20141016 Year of fee payment: 19 Ref country code: GB Payment date: 20141118 Year of fee payment: 19 Ref country code: SE Payment date: 20141114 Year of fee payment: 19 Ref country code: DE Payment date: 20141113 Year of fee payment: 19 Ref country code: ES Payment date: 20141124 Year of fee payment: 19 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: TP Owner name: ASCO INDUSTRIES, FR Effective date: 20141222 Ref country code: FR Ref legal event code: GC Effective date: 20141222 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 20141024 Year of fee payment: 19 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20141113 Year of fee payment: 19 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: S117 Free format text: REQUEST FILED; REQUEST FOR CORRECTION UNDER SECTION 117 FILED ON 18 MAY 2015 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: S117 Free format text: CORRECTIONS ALLOWED; REQUEST FOR CORRECTION UNDER SECTION 117 FILED 18 MAY 2015, ALLOWED ON 28 AUGUST 2015 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: 732E Free format text: REGISTERED BETWEEN 20150910 AND 20150916 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R082 Ref document number: 69608773 Country of ref document: DE Representative=s name: HAFT - KARAKATSANIS PATENTANWALTSKANZLEI, DE Ref country code: DE Ref legal event code: R082 Ref document number: 69608773 Country of ref document: DE Representative=s name: LAVOIX MUNICH, DE Ref country code: DE Ref legal event code: R081 Ref document number: 69608773 Country of ref document: DE Owner name: ASCO INDUSTRIES, FR Free format text: FORMER OWNER: ASCOMETAL (S.A.), PUTEAUX, FR |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R082 Ref document number: 69608773 Country of ref document: DE Representative=s name: HAFT - KARAKATSANIS PATENTANWALTSKANZLEI, DE |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 69608773 Country of ref document: DE |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20151126 |
|
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: 20151126 |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: MM Effective date: 20151201 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20160729 |
|
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: 20151127 |
|
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 NON-PAYMENT OF DUE FEES Effective date: 20151201 |
|
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: 20160601 Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20151126 |
|
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: 20151130 |
|
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: 20151127 |
|
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: 20151126 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20180507 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: RG Effective date: 20180606 |