US20100186855A1 - Steel and processing method for the manufacture of high strength, fracture-splittable machinery components - Google Patents

Steel and processing method for the manufacture of high strength, fracture-splittable machinery components Download PDF

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Publication number
US20100186855A1
US20100186855A1 US12/310,588 US31058807A US2010186855A1 US 20100186855 A1 US20100186855 A1 US 20100186855A1 US 31058807 A US31058807 A US 31058807A US 2010186855 A1 US2010186855 A1 US 2010186855A1
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US
United States
Prior art keywords
accordance
steel
fracture
component
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.)
Abandoned
Application number
US12/310,588
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English (en)
Inventor
Roman Diederichs
Axel Stueber
Robert Lange
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.)
Georgsmarienhuette GmbH
Original Assignee
Georgsmarienhuette GmbH
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 Georgsmarienhuette GmbH filed Critical Georgsmarienhuette GmbH
Assigned to GEORGSMARIENHUETTE GMBH reassignment GEORGSMARIENHUETTE GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DIEDERICHS, ROMAN, LANGE, ROBERT, STUEBER, AXEL
Publication of US20100186855A1 publication Critical patent/US20100186855A1/en
Abandoned legal-status Critical Current

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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
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/001—Ferrous alloys, e.g. steel alloys containing N
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum

Definitions

  • the invention concerns a steel and the processing method for the manufacture of high strength, fracture-splittable machinery components. This material was developed, for example, for the manufacture of crack connecting rods.
  • the steel must be suitable for forging or for other heat forming processes.
  • the heat used in the forging is dissipated by controlled cooling to produce a largely pearlitic structure that has an apparent limit of elasticity in excess of 750 N/mm 2 , a tensile strength between 1000 and 1200 N/mm 2 , elongation to fracture of over 10% and reduction in area at fracture of over 25%. Its fracture-splittability is a particularly important feature.
  • the desired properties can be obtained by intentionally creating a pearlitic structure with the precipitation of special carbides (niobium and vanadium carbide) and of manganese sulphides by an appropriately formulated chemical composition, controlled temperature management during the heat forming when producing the preliminary material as well as when forging the finished components (thermomechanical treatment), and a suitable heat treatment after completion of the forging or heat forming, as the case may be.
  • examples of the steels used for this purpose are either mostly eutectoid compositions with approximately 0.7% C, 0.5 to 0.9% Mn, 0.06 to 0.07% S and possibly 0.1 to 0.2% V (C70S6, 70MnVS4), or an average carbon content of approximately 0.4%, about 1% Mn, 0.06 to 0.07% S and about 0.3% V (36MnVS4) according to customers' technical specifications.
  • the aim of this invention is to avoid the cited disadvantages by proposing a new steel which has the required mechanical properties regarding strength (and fatigue strength) and, additionally, good toughness characteristics in tensile tests, combined at the same time with good splittability.
  • the steel must also be easy to continuously cast and forge.
  • the new steel must use fewer resources when being produced than the known steels by partially substituting the vanadium content with niobium using an appropriately adapted forming and cooling strategy.
  • the high value for the apparent limit of elasticity is achieved, other than with the basic composition, by the precipitation of extremely finely dispersed carbides of special carbide formers niobium and vanadium. This requires a solution of the present carbides before the final hot forming process as well as controlled temperature management during the hot forming, followed by a final cooling off stage. Finely dispersed precipitation can be achieved, in particular, by having a low final forming temperature, ending with slightly accelerated cooling. This raises the apparent limit of elasticity in particular, thus improving the elastic limit ratio considerably.
  • the tensile strength value of the basic composition comprising 0.5% C, 0.6% Si, 1.0% Mn, 0.23% Cr, 0.2% Ni and 0.14% V can be adjusted to the desired level by slightly accelerated cooling after hot forming.
  • the toughness characteristic values are controlled, in particular, by selective alloying with 0.06 to 0.07% sulphur.
  • the carbon content and relatively high nitrogen content also act positively in this regard.
  • a crystalline fracture or macroscopic deformation is essential for the material to split properly. This is achieved by designing the alloy with high contents of carbon, nitrogen and sulphur, and comparatively low contents of chromium, nickel and molybdenum.
  • the invention concerns a steel for the manufacture of fracture-splittable components for the vehicle industry with the following chemical composition in percentages by weight:

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Steel (AREA)
  • Heat Treatment Of Articles (AREA)
  • Processing Of Solid Wastes (AREA)
  • Forging (AREA)
US12/310,588 2006-09-01 2007-07-27 Steel and processing method for the manufacture of high strength, fracture-splittable machinery components Abandoned US20100186855A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102006041146.3 2006-09-01
DE102006041146A DE102006041146A1 (de) 2006-09-01 2006-09-01 Stahl und Verarbeitungsverfahren für die Herstellung von höherfesten bruchtrennbaren Maschinenbauteilen
PCT/DE2007/001337 WO2008028447A1 (fr) 2006-09-01 2007-07-27 Acier et procédé de transformation pour produire des pièces mécaniques pouvant être séparées par rupture présentant une résistance accrue

Publications (1)

Publication Number Publication Date
US20100186855A1 true US20100186855A1 (en) 2010-07-29

Family

ID=38989625

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/310,588 Abandoned US20100186855A1 (en) 2006-09-01 2007-07-27 Steel and processing method for the manufacture of high strength, fracture-splittable machinery components

Country Status (15)

Country Link
US (1) US20100186855A1 (fr)
EP (1) EP2057298B1 (fr)
JP (1) JP2010501733A (fr)
KR (1) KR20090049591A (fr)
CN (1) CN101542007A (fr)
AR (1) AR062184A1 (fr)
AU (1) AU2007294317B2 (fr)
BR (1) BRPI0716206A2 (fr)
CA (1) CA2666677A1 (fr)
DE (1) DE102006041146A1 (fr)
MX (1) MX2009001971A (fr)
RU (1) RU2441093C2 (fr)
TW (1) TW200825188A (fr)
WO (1) WO2008028447A1 (fr)
ZA (1) ZA200900848B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021099815A1 (fr) 2019-11-18 2021-05-27 Arcelormittal Pièce forgée en acier et son procédé de fabrication

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3168319B1 (fr) * 2014-07-08 2020-12-16 Sidenor Investigación y Desarrollo, S.A. Acier haute résistance faiblement allié pour formage à chaud de pièces de haute résistance et de limite élastique élevée
CN105543651B (zh) * 2015-12-21 2017-11-17 武钢集团昆明钢铁股份有限公司 一种用于制造水电站发电机转轴、铰轴的锻件钢钢水及其冶炼方法
CN107619995A (zh) * 2017-08-11 2018-01-23 江阴兴澄特种钢铁有限公司 一种大直径工程机械液压油缸活塞杆用圆钢及其制造方法
EP3453777A1 (fr) 2017-09-08 2019-03-13 Cemtas Celk Makina Sanayi Ve Ticaret Anonim Sirketi Acier micro allié fractionnable et à résistance élevée
CN108504935A (zh) * 2018-05-11 2018-09-07 攀钢集团攀枝花钢铁研究院有限公司 含v、n非调质预硬型塑料模具钢及其制备方法
CN108624815A (zh) * 2018-05-11 2018-10-09 攀钢集团攀枝花钢铁研究院有限公司 含V、Nb、Ti非调质预硬型塑料模具钢及其制备方法
CN108486472A (zh) * 2018-05-11 2018-09-04 攀钢集团攀枝花钢铁研究院有限公司 含V、Ti、N非调质预硬型塑料模具钢及其制备方法
CN108504934A (zh) * 2018-05-11 2018-09-07 攀钢集团攀枝花钢铁研究院有限公司 含V、Nb、N非调质预硬型塑料模具钢及其制备方法
CN108546879A (zh) * 2018-05-11 2018-09-18 攀钢集团攀枝花钢铁研究院有限公司 含V、Nb非调质预硬型塑料模具钢及其制备方法
CN110284055A (zh) * 2019-06-17 2019-09-27 威海津恒科技有限公司 一种耐磨汽车冲压件模具及其制备方法
TR201921217A2 (tr) 2019-12-24 2021-07-26 Tirsan Kardan Sanayi Ve Ticaret Anonim Sirketi Yüksek mukavemetli, düşük alaşımlı çelik kompozisyonu
CN111235487B (zh) * 2020-03-23 2021-08-31 马鞍山钢铁股份有限公司 一种长寿命钎杆用钢及其生产方法
CN114058943A (zh) * 2021-09-14 2022-02-18 武汉钢铁有限公司 一种微合金钢及其制作方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5769970A (en) * 1995-12-14 1998-06-23 Ascometal (Societe Anonyme) Steel for the manufacture of separable mechanical components and separable mechanical component
US20040131494A1 (en) * 2002-11-20 2004-07-08 Koichiro Inoue Microalloyed steel easy to separate by fracture splitting at low temperature and fitting member produced through separation by fracture splitting at low temperature

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3009443C2 (de) * 1980-03-12 1981-11-19 Thyssen Edelstahlwerke AG, 4000 Düsseldorf Verwendung eines Stahls hoher Festigkeit und Zähigkeit
JPH01176055A (ja) * 1987-12-28 1989-07-12 Kawasaki Steel Corp 被削性に優れた熱間鍛造用非調質鋼
JPH04191348A (ja) * 1990-11-24 1992-07-09 Daido Steel Co Ltd 高靭性非調質鋼
EP0856590B2 (fr) * 1997-02-04 2005-12-28 Daido Tokushuko Kabushiki Kaisha Acier affiné non-thermique à haute résistance mécanique pour forgeage à chaud
FR2774098B1 (fr) * 1998-01-28 2001-08-03 Ascometal Sa Acier et procede pour la fabrication de pieces de mecanique secables
JP5023410B2 (ja) * 2001-03-02 2012-09-12 大同特殊鋼株式会社 破断分離が容易な熱間鍛造用非調質鋼
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
JP2003193184A (ja) * 2001-12-28 2003-07-09 Kobe Steel Ltd 破断分割型コネクティングロッド及びそれ用の鋼

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5769970A (en) * 1995-12-14 1998-06-23 Ascometal (Societe Anonyme) Steel for the manufacture of separable mechanical components and separable mechanical component
US20040131494A1 (en) * 2002-11-20 2004-07-08 Koichiro Inoue Microalloyed steel easy to separate by fracture splitting at low temperature and fitting member produced through separation by fracture splitting at low temperature

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021099815A1 (fr) 2019-11-18 2021-05-27 Arcelormittal Pièce forgée en acier et son procédé de fabrication

Also Published As

Publication number Publication date
ZA200900848B (en) 2009-12-30
CN101542007A (zh) 2009-09-23
MX2009001971A (es) 2009-03-09
AR062184A1 (es) 2008-10-22
RU2441093C2 (ru) 2012-01-27
AU2007294317B2 (en) 2011-10-13
WO2008028447A1 (fr) 2008-03-13
EP2057298A1 (fr) 2009-05-13
AU2007294317A1 (en) 2008-03-13
BRPI0716206A2 (pt) 2013-11-12
DE102006041146A1 (de) 2008-03-06
EP2057298B1 (fr) 2012-11-14
KR20090049591A (ko) 2009-05-18
CA2666677A1 (fr) 2008-03-13
TW200825188A (en) 2008-06-16
JP2010501733A (ja) 2010-01-21
RU2009111860A (ru) 2010-10-10

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Owner name: GEORGSMARIENHUETTE GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:DIEDERICHS, ROMAN;STUEBER, AXEL;LANGE, ROBERT;SIGNING DATES FROM 20090212 TO 20090224;REEL/FRAME:022367/0410

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION