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WO2003045625A2 - Fonte vermiculaire possedant une capacite elevee d'usinabilite - Google Patents

Fonte vermiculaire possedant une capacite elevee d'usinabilite Download PDF

Info

Publication number
WO2003045625A2
WO2003045625A2 PCT/BR2002/000164 BR0200164W WO03045625A2 WO 2003045625 A2 WO2003045625 A2 WO 2003045625A2 BR 0200164 W BR0200164 W BR 0200164W WO 03045625 A2 WO03045625 A2 WO 03045625A2
Authority
WO
WIPO (PCT)
Prior art keywords
cast iron
machinability
vermicular cast
vermicular
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.)
Ceased
Application number
PCT/BR2002/000164
Other languages
English (en)
Other versions
WO2003045625A3 (fr
Inventor
Wilson Luiz Guesser
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.)
Tupy Fundicoes Ltda
Original Assignee
Tupy Fundicoes Ltda
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 Tupy Fundicoes Ltda filed Critical Tupy Fundicoes Ltda
Priority to EP02782549A priority Critical patent/EP1458517A4/fr
Publication of WO2003045625A2 publication Critical patent/WO2003045625A2/fr
Publication of WO2003045625A3 publication Critical patent/WO2003045625A3/fr
Anticipated expiration legal-status Critical
Ceased 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

Definitions

  • the present report is about vermicular cast iron of high machinability, and more specifically, to a vermicular cast iron that presents a bigger amount of graphite in its microstructure.
  • the vermicular cast iron comprises a group of Fe-C-Si alloys and also contains Mn, P, S, with controlled additions of Mg, presenting graphite predominately in vermicular form (form IV according to Standard ASTM A247), with up to 20% of nodules (forms I and II Standard ASTM A247) in its microstructure .
  • its ultimate tensile strength may be changed from 350 to 500 Mega Pascal through complementary additions of pearlitic elements such as Mn, Cr, Cu and Sn.
  • the vermicular cast iron has been increasingly applied in automotive components such as internal combustion engine blocks, internal combustion engine heads, disks and brake drums.
  • the low machinability of conventional vermicular cast iron is a characteristic known to the material which reflects in the decrease of a tool life when compared to the machining of gray cast iron.
  • the decrease in the tool or component life is real and effective, being its quantitative parameter dependent on the machining operation in particular. It can be observed that such reduction is of at least 50% in milling and boring operations, and could decrease up to 95% the life of the tool in cylinder hole reaming operations.
  • One of the goals of the present invention is to provide vermicular cast iron of high machinability, that allows an increase in the life of tools to be used with the cast part together with the innovated characteristics.
  • Another goal of the present invention is to provide vermicular cast iron of high machinability that presents a machinability at least 40% bigger than the conventional vermicular cast iron, machinability evaluated by the life of the cutting tool.
  • vermicular cast iron of high machinability that comprises the inclusion of a defined amount of graphite in its microstructure and in the limitation of harmful chemical elements, besides defining the parameters for the correct pearlite interlamellar spacing.
  • the ideal amount of graphite in the microstructure is between 10 and 13%.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Powder Metallurgy (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

Fonte vermiculaire possédant une capacité élevée d'usinabilité, exempte de porosités microscopiques, présentant une résistance à la traction extrême entre 350 et 500 MEGA PASCAL, ainsi qu'une usinabilité supérieure d'au moins 40 % à celle de la fonte vermiculaire classique, cette usinabilité étant évaluée au moyen de la durée de vie de l'outil coupant.
PCT/BR2002/000164 2001-11-27 2002-11-26 Fonte vermiculaire possedant une capacite elevee d'usinabilite Ceased WO2003045625A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP02782549A EP1458517A4 (fr) 2001-11-27 2002-11-26 Fonte vermiculaire possedant une capacite elevee d'usinabilite

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BR0105987A BR0105987B1 (pt) 2001-11-27 2001-11-27 ferro fundido vermicular de alta usinabilidade.
BRPI0105987-4 2001-11-27

Publications (2)

Publication Number Publication Date
WO2003045625A2 true WO2003045625A2 (fr) 2003-06-05
WO2003045625A3 WO2003045625A3 (fr) 2003-10-23

Family

ID=3948158

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/BR2002/000164 Ceased WO2003045625A2 (fr) 2001-11-27 2002-11-26 Fonte vermiculaire possedant une capacite elevee d'usinabilite

Country Status (3)

Country Link
EP (1) EP1458517A4 (fr)
BR (1) BR0105987B1 (fr)
WO (1) WO2003045625A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2518174A4 (fr) * 2009-12-22 2014-05-07 Doosan Infracore Co Ltd Fonte cgi et son procédé de fabrication

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR102016021139B1 (pt) * 2016-09-13 2021-11-30 Tupy S.A. Liga de ferro fundido vermicular e cabeçote de motor a combustão interna

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1069058A (en) * 1965-05-04 1967-05-17 Int Nickel Ltd Cast iron
US4409028A (en) * 1979-10-24 1983-10-11 Moore William H Process for producing cast iron
JPS6036754A (ja) * 1983-08-08 1985-02-25 Kubota Ltd 複合シリンダ−ライナ−
CN85107725B (zh) * 1985-10-17 1987-12-23 陕西机械学院 制造玻璃瓶模具的蠕墨铸铁
JP2624886B2 (ja) * 1990-09-19 1997-06-25 株式会社日立製作所 エレベータ装置
EP0769615A1 (fr) * 1995-10-17 1997-04-23 Ford Motor Company Limited Bloc à cylindres d'un moteur
DE19654893C2 (de) * 1996-07-25 1999-06-10 Federal Mogul Burscheid Gmbh Kolbenringe von Verbrennungskraftmaschinen aus einer Gußeisenlegierung
US5858127A (en) * 1996-08-02 1999-01-12 Gunite Corporation Metal alloys and brake drums made from such alloys
JP2894300B2 (ja) * 1996-11-15 1999-05-24 株式会社日立製作所 コンパクト・バーミキュラ黒鉛鋳鉄
SE9904257D0 (sv) * 1999-11-23 1999-11-23 Sintercast Ab New cast iron alloy

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2518174A4 (fr) * 2009-12-22 2014-05-07 Doosan Infracore Co Ltd Fonte cgi et son procédé de fabrication

Also Published As

Publication number Publication date
EP1458517A2 (fr) 2004-09-22
BR0105987A (pt) 2002-11-12
BR0105987B1 (pt) 2009-08-11
WO2003045625A3 (fr) 2003-10-23
EP1458517A4 (fr) 2005-02-23

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