EP1415009A1 - Fonte nodulaire a resistance et ductilite elevees et boitier de transmission qu'elle permet de realiser - Google Patents

Fonte nodulaire a resistance et ductilite elevees et boitier de transmission qu'elle permet de realiser

Info

Publication number
EP1415009A1
EP1415009A1 EP02766913A EP02766913A EP1415009A1 EP 1415009 A1 EP1415009 A1 EP 1415009A1 EP 02766913 A EP02766913 A EP 02766913A EP 02766913 A EP02766913 A EP 02766913A EP 1415009 A1 EP1415009 A1 EP 1415009A1
Authority
EP
European Patent Office
Prior art keywords
percent
strength
ductility
silicon
housing
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.)
Granted
Application number
EP02766913A
Other languages
German (de)
English (en)
Other versions
EP1415009B1 (fr
Inventor
Oskar Kehrer
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.)
Magna Drivetrain AG and Co KG
Original Assignee
Magna Steyr Powertrain AG and Co KG
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 Magna Steyr Powertrain AG and Co KG filed Critical Magna Steyr Powertrain AG and Co KG
Priority to AT02766913T priority Critical patent/ATE316586T1/de
Publication of EP1415009A1 publication Critical patent/EP1415009A1/fr
Application granted granted Critical
Publication of EP1415009B1 publication Critical patent/EP1415009B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C37/00—Cast-iron alloys
    • C22C37/10—Cast-iron alloys containing aluminium or silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C37/00—Cast-iron alloys
    • C22C37/04—Cast-iron alloys containing spheroidal graphite

Definitions

  • the invention relates to a nodular cast iron with siliconized silicon, as it is commonly used for heavily used castings, for example the materials according to DIN or SAE [in square brackets]:
  • the first one (a) is still ferritic and therefore tenacious, but its strength is only mediocre. If the strength is to be higher, one resorts to the materials b), c) and d), which in turn are ferritic-perlitic to 0 perlitiscli, with strong declinative toughness and weldability. These materials have from a) to d) increasingly a multiphase (ferritic-pearlitic) Grundfuge locally different composition, which is reinforced by the unavoidable during casting locally different cooling conditions and to 5 problems in the subsequent, in particular machining , Editing leads. Their use is therefore limited to special applications. In vehicle construction, the reduction of weight is a particular concern, which in castings low wall thickness - ie high strength - but also requires toughness and good workability. It is then necessary to use steel, but it is about 10 percent heavier.
  • a nodular cast iron according to the invention contains: 4 to 6 percent silicon and a proportion of carbon corresponding to the carbon equivalent, a maximum of 0.03 percent phosphorus and 0.2 to 0.5 percent nickel.
  • the high content of silicon has a ferrite-stabilizing effect and also increases the strength.
  • the carbon equivalent requires a corresponding reduction of the carbon content. Since phosphorus acts as embrittlement due to the strong solid solution hardening of the compounds it has received, the phosphorus content must be kept as small as possible. Nickel also reduces the brittleness and increases the strength, the required proportions are so small that the resulting additional costs are negligible.
  • the invention also relates to housings, in particular gear housing, which consist of a ductile iron according to one of the preceding claims.
  • gear housing which consist of a ductile iron according to one of the preceding claims.
  • Such a gear housing can be thinner walled and lighter because of the high strength of the fiction, according to improved ductile iron.
  • the machining necessary for the formation of connection flanges and bearing seats is possible without restriction.
  • a gear housing made of the material according to the invention can be welded to a toothed part made of alloyed and / or case-hardened steel.
  • Fig. 1 A comparison of nodular iron according to the prior
  • FIG. 2 shows a section through a transmission housing according to the invention.
  • the housing for example, the housing of a transmission, with 1 and a connected thereto to a component gear designated by 2.
  • the housing 1 here consists of an inventively improved ductile iron.
  • the gear 2 is made of steel and case hardened.
  • the housing 1 has a first axis normal to be welded surface 3, To which a cylindrical collar 4 connects, which forms an outer cylindrical mating surface 5.
  • the housing 1 may be provided at a location greater wall thickness with a parallel to the first surface to be welded to circumferential groove 6, which is rounded in cross-section.
  • the cylindrical mating surface 8 can be withdrawn at the transition to the second surface 7 to be welded, so that an extension 9 forms. This facilitates the production and the sliding of the gear on the collar 4 and, if necessary, improves the penetration of the root.
  • the axis of rotation of the component and 20 of the welding head is designated.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Details Of Gearings (AREA)
  • Gears, Cams (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

La présente invention concerne une fonte nodulaire améliorée qui, malgré une dureté élevée, doit présenter une bonne aptitude à l'usinage et à la soudure. Ladite fonte comprend : 4 à 6 % de silicium et une proportion de carbone limitée en fonction de l'équivalent de carbone, au maximum 0,03 % de phosphore, et 0,2 à 0,5 % de nickel. Un boîtier (1) réalisé à partir de cette fonte est soudé avec une pièce d'engrenage (2) en acier allié et/ou cémenté.
EP02766913A 2001-08-07 2002-08-02 Fonte nodulaire a resistance et ductilite elevees et boitier de transmission qu'elle permet de realiser Expired - Lifetime EP1415009B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT02766913T ATE316586T1 (de) 2001-08-07 2002-08-02 Spharoguss mit hoher festigkeit und duktilitat und daraus hergestelltes getriebegehause

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT6232001 2001-08-07
AT0062301U AT5381U1 (de) 2001-08-07 2001-08-07 Sphäroguss hoher festigkeit und duktilität und daraus hergestelltes getriebegehäuse
PCT/AT2002/000234 WO2003014407A1 (fr) 2001-08-07 2002-08-02 Fonte nodulaire a resistance et ductilite elevees et boitier de transmission qu'elle permet de realiser

Publications (2)

Publication Number Publication Date
EP1415009A1 true EP1415009A1 (fr) 2004-05-06
EP1415009B1 EP1415009B1 (fr) 2006-01-25

Family

ID=3495482

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02766913A Expired - Lifetime EP1415009B1 (fr) 2001-08-07 2002-08-02 Fonte nodulaire a resistance et ductilite elevees et boitier de transmission qu'elle permet de realiser

Country Status (7)

Country Link
US (1) US20040219052A1 (fr)
EP (1) EP1415009B1 (fr)
JP (1) JP2004537652A (fr)
KR (1) KR20040017853A (fr)
AT (2) AT5381U1 (fr)
CA (1) CA2456432A1 (fr)
WO (1) WO2003014407A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006038670B4 (de) * 2006-08-17 2010-12-09 Federal-Mogul Burscheid Gmbh Hochsiliziumhaltiger Stahlwerkstoff zur Herstellung von Kolbenringen und Zylinderlaufbuchsen
RU2546938C1 (ru) * 2014-02-25 2015-04-10 Юлия Алексеевна Щепочкина Чугун

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3749463A (en) * 1970-10-13 1973-07-31 J Krapf Bearing mounting method and apparatus
DE2456700C3 (de) * 1974-11-30 1980-07-31 Goetze Ag, 5093 Burscheid Dichtleiste für Rotationskolbenmotoren
DE3147461C2 (de) * 1981-12-01 1983-10-13 Goetze Ag, 5093 Burscheid Verschleißfeste Gußeisenlegierung hoher Festigkeit mit sphärolithischer Graphitausscheidung, ihr Herstellungsverfahren und ihre Verwendung
JPS6017819B2 (ja) * 1982-04-01 1985-05-07 マツダ株式会社 高温耐酸化性、耐熱疲労性に優れた球状黒鉛鋳鉄
US4484953A (en) * 1983-01-24 1984-11-27 Ford Motor Company Method of making ductile cast iron with improved strength
US4475956A (en) * 1983-01-24 1984-10-09 Ford Motor Company Method of making high strength ferritic ductile iron parts
DE19636808C1 (de) * 1996-09-11 1997-09-25 Harzer Grauguswerke Gmbh Gußeisen-Legierung für thermisch hochbelastete Motorenteile

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO03014407A1 *

Also Published As

Publication number Publication date
JP2004537652A (ja) 2004-12-16
ATE316586T1 (de) 2006-02-15
KR20040017853A (ko) 2004-02-27
CA2456432A1 (fr) 2003-02-20
AT5381U1 (de) 2002-06-25
EP1415009B1 (fr) 2006-01-25
WO2003014407A1 (fr) 2003-02-20
US20040219052A1 (en) 2004-11-04

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