EP1415009B1 - Spharoguss mit hoher festigkeit und duktilitat und daraus hergestelltes getriebegehause - Google Patents

Spharoguss mit hoher festigkeit und duktilitat und daraus hergestelltes getriebegehause Download PDF

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Publication number
EP1415009B1
EP1415009B1 EP02766913A EP02766913A EP1415009B1 EP 1415009 B1 EP1415009 B1 EP 1415009B1 EP 02766913 A EP02766913 A EP 02766913A EP 02766913 A EP02766913 A EP 02766913A EP 1415009 B1 EP1415009 B1 EP 1415009B1
Authority
EP
European Patent Office
Prior art keywords
percent
cast iron
strength
gjs
content
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
EP02766913A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1415009A1 (de
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 Drivetrain 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 Drivetrain AG and Co KG filed Critical Magna Drivetrain AG and Co KG
Priority to AT02766913T priority Critical patent/ATE316586T1/de
Publication of EP1415009A1 publication Critical patent/EP1415009A1/de
Application granted granted Critical
Publication of EP1415009B1 publication Critical patent/EP1415009B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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 first one (a) is still ferritic and therefore tough, but its strength is only mediocre. If the strength is to be higher, one resorts to the materials b), c) and d), which are in turn ferritic-perlitic to purely pearlitic, with greatly decreasing toughness and weldability. These materials have from a) to d) increasingly a multiphase (ferritic-pearlitic) basic structure locally different composition, which is reinforced by the unavoidable during casting locally different cooling conditions and leads to problems in the subsequent, especially machining, machining , Their use is therefore limited to special applications.
  • a ductile iron according to the invention contains: 4 to 6 percent silicon and a proportion of carbon reduced to 2.2 to 3.37 percent corresponding to the carbon equivalent, maximum 0.03 percent phosphorus, 0.2 to 0.5 percent nickel, balance iron, for the formation of ductile iron usual additives and unavoidable impurities.
  • 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 embrittled due to the strong solid solution hardening of his incoming compounds acts, the phosphorus content is to be kept as small as possible. Nickel 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 housing, in particular gear housing, which consist of a ductile iron according to one of the preceding claims.
  • housing in particular gear housing, which consist of a ductile iron according to one of the preceding claims.
  • Such a transmission housing can be thinner walled and lighter because of the high strength of the ductile iron improved according to the invention. The necessary for the formation of connecting flanges and bearing seats machining is fully possible.
  • 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 the properties of the prior art materials according to a) to d) above in the first four columns are compared with those of the invention improved in the fifth column.
  • the numbers and statements speak for themselves and support the statements made in the introduction.
  • 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 machined to be welded surface 3, which is followed by a cylindrical collar 4, 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.
  • On the toothed wheel 2 there is provided a second surface 7 to be welded in a plane normal to the axis and a cylindrical mating surface 8 which sits on the cylindrical mating face 5.
  • the cylindrical mating surface 8 may be withdrawn at the transition to the second surface to be welded 7, so that an extension 9 is formed. This facilitates the manufacture and the sliding of the gear on the collar 4 and, if necessary, improves the penetration of the root. With 18, the axis of rotation of the component and 20 of the welding head is designated.

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  • 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)
EP02766913A 2001-08-07 2002-08-02 Spharoguss mit hoher festigkeit und duktilitat und daraus hergestelltes getriebegehause Expired - Lifetime EP1415009B1 (de)

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 (de) 2001-08-07 2002-08-02 Spharoguss mit hoher festigkeit und duktilitat und daraus hergestelltes getriebegehause

Publications (2)

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

Family

ID=3495482

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02766913A Expired - Lifetime EP1415009B1 (de) 2001-08-07 2002-08-02 Spharoguss mit hoher festigkeit und duktilitat und daraus hergestelltes getriebegehause

Country Status (7)

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

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

Also Published As

Publication number Publication date
JP2004537652A (ja) 2004-12-16
EP1415009A1 (de) 2004-05-06
ATE316586T1 (de) 2006-02-15
KR20040017853A (ko) 2004-02-27
CA2456432A1 (en) 2003-02-20
AT5381U1 (de) 2002-06-25
WO2003014407A1 (de) 2003-02-20
US20040219052A1 (en) 2004-11-04

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