EP1235657A2 - Moule perdu pour la realisation d'une chemise de cylindre - Google Patents

Moule perdu pour la realisation d'une chemise de cylindre

Info

Publication number
EP1235657A2
EP1235657A2 EP00985038A EP00985038A EP1235657A2 EP 1235657 A2 EP1235657 A2 EP 1235657A2 EP 00985038 A EP00985038 A EP 00985038A EP 00985038 A EP00985038 A EP 00985038A EP 1235657 A2 EP1235657 A2 EP 1235657A2
Authority
EP
European Patent Office
Prior art keywords
lost
inner core
cast
particles
producing
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.)
Withdrawn
Application number
EP00985038A
Other languages
German (de)
English (en)
Inventor
Peter Grahle
Jens WIESENMÜLLER
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.)
Mahle Ventiltrieb GmbH
Original Assignee
Mahle Ventiltrieb 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 Mahle Ventiltrieb GmbH filed Critical Mahle Ventiltrieb GmbH
Publication of EP1235657A2 publication Critical patent/EP1235657A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
    • B22C7/02—Lost patterns
    • B22C7/023—Patterns made from expanded plastic materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00—Casting in, on, or around objects which form part of the product
    • B22D19/0009—Cylinders, pistons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00—Casting in, on, or around objects which form part of the product
    • B22D19/0081—Casting in, on, or around objects which form part of the product pretreatment of the insert, e.g. for enhancing the bonding between insert and surrounding cast metal

Definitions

  • the invention relates to a lost mold for the production of a cylinder liner or of other castings, in particular of ring carriers for pistons and a corresponding manufacturing method, as well as cylinder liners produced using lost molds according to the invention or a composite of a plurality of cylinder liners and other castings.
  • the invention is therefore concerned with the problem of specifying a method and a corresponding lost mold for producing a cast liner from aluminum, in particular, which has a rough outer surface.
  • the inner core of the lost form and the particles can consist of polystyrene, for example. However, all other materials suitable for lost molds can also be considered. Due to the structured surface of the lost shape, which is formed from particles, a rough surface with undercuts is created when the liner is cast, which is subsequently cast with an aluminum alloy during the subsequent production of a cylinder block, with a clinging between the liner and the base material.
  • the structured surface of the lost shape can also be referred to as a particle layer with gaps on the inner shape of the lost core.
  • a layer according to the invention deviates from the common understanding of the word "layer” in that there is generally no cohesion between the individual particles forming the layer, but only between the inner core and the particles.
  • the layer thickness is defined as the radial distance between the surface of the inner core and the outermost point of a particle.
  • the proportion of the gaps ie the surface not covered with particles, can assume values between 0% and 95% of the total area. Furthermore, the particles can also only locally z. B. may be provided in an upper and a lower region of the inner core of the lost shape.
  • Fig. 1 shows a lost shape according to the invention in cross section.
  • the lost mold 1 consists of an inner core 2 and a layer 3 with gaps formed from particles, which overall represents a structured outer surface of the lost mold 1.
  • the particles have no cohesion with one another, and are therefore only connected to the inner core 2.
  • the layer 3 formed from particles is applied to the inner core 2 by first spraying or brushing the inner core 2 with an adhesive or rolling an adhesive and then bringing the inner core into contact with the particles, e.g. B. by rolling the inner core 2 in a particle bed.
  • the layer thickness of the particle layer 3 defined above is shown in the drawing by a broken line.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Abstract

L'objectif de l'invention est d'obtenir une chemise de cylindre ou une autre pièce intérieure coulée, en particulier un support de segment pour pistons, qui présente une surface rugueuse garantissant un bon accrochage du matériau coulé entourant ladite pièce intérieure coulée. Selon l'invention, cette surface rugueuse est obtenue par le fait que la pièce intérieure coulée est réalisée à l'aide d'un moule perdu présentant une couche de particules.
EP00985038A 1999-12-02 2000-11-16 Moule perdu pour la realisation d'une chemise de cylindre Withdrawn EP1235657A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19958185A DE19958185A1 (de) 1999-12-02 1999-12-02 Verlorene Form zur Herstellung einer Zylinderlaufbuchse
DE19958185 1999-12-02
PCT/EP2000/011330 WO2001039910A2 (fr) 1999-12-02 2000-11-16 Moule perdu pour la realisation d'une chemise de cylindre

Publications (1)

Publication Number Publication Date
EP1235657A2 true EP1235657A2 (fr) 2002-09-04

Family

ID=7931230

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00985038A Withdrawn EP1235657A2 (fr) 1999-12-02 2000-11-16 Moule perdu pour la realisation d'une chemise de cylindre

Country Status (6)

Country Link
US (1) US6732632B1 (fr)
EP (1) EP1235657A2 (fr)
JP (1) JP2003525123A (fr)
BR (1) BR0016027A (fr)
DE (1) DE19958185A1 (fr)
WO (1) WO2001039910A2 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10103596A1 (de) * 2001-01-26 2002-08-01 Bruehl Eisenwerk Verfahren zur Herstellung eines aus wenigstens zwei unterschiedlichen Metallwerkstoffen gebildeten Gußwerkstücks
DE10125615A1 (de) 2001-05-25 2002-12-05 Mahle Gmbh Form und Verfahren zur Herstellung eines verlorenen Schaumstoffgußmodells für eine Leichtmetall-Laufbuchse
US6957489B2 (en) 2001-06-23 2005-10-25 Mahle Gmbh Method for producing a light-alloy bearing bush with a rough external surface
DE10218714A1 (de) 2001-06-23 2003-01-02 Mahle Gmbh Verfahren zur Herstellung einer Leichtmetalllaufbuchse mit einer äußeren rauen Oberfläche
DE102004007774A1 (de) * 2004-02-18 2005-09-15 Mahle Gmbh Laufbuchse für einen Verbrennungsmotor
US10247129B2 (en) 2017-02-22 2019-04-02 GM Global Technology Operations LLC Cylinder liner for internal combustion engine
US10253721B2 (en) 2017-04-12 2019-04-09 GM Global Technology Operations LLC Cylinder liner for internal combustion engine
WO2020176675A1 (fr) * 2019-02-28 2020-09-03 Progressive International Corporation Trancheuse et poussoir

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH430065A (de) * 1965-04-17 1967-02-15 Gruenzweig & Hartmann Schlichte zum Überziehen von verlorenen Schaumstoffmodellen für das Vollformgiessen
WO1983003212A1 (fr) * 1982-03-15 1983-09-29 Schmitt, Reimar Moule pour la coulee d'objets de faible epaisseur en metal ou en alliage a bas point de fusion, et procede de recouvrement de la surface active de ce moule
JPS60118352A (ja) * 1983-11-30 1985-06-25 Morikawa Sangyo Kk 鋳包み用シリンダ−ライナの製造方法及びその鋳造用模型
JPS63248543A (ja) * 1987-04-03 1988-10-14 Honda Motor Co Ltd シリンダライナ−およびその製造方法
JPH01143737A (ja) * 1987-11-30 1989-06-06 Mazda Motor Corp ロストフォームの塗型方法
US4986942A (en) * 1988-03-22 1991-01-22 Outboard Marine Corporation Method for forming ported cylinder sleeve liner foam pattern
JP2832032B2 (ja) * 1989-04-28 1998-12-02 日本ピストンリング株式会社 鋳包み用中空筒体の製造方法
US5027878A (en) * 1989-10-05 1991-07-02 Deere & Company Method of impregnation of iron with a wear resistant material
DE4109308C1 (fr) * 1991-03-21 1992-01-16 Man B & W Diesel Ag, 8900 Augsburg, De
EP0704613A1 (fr) * 1994-09-28 1996-04-03 KS Aluminium Technologie Aktiengesellschaft Cylindre ou bloc-cylindres coulé de manière composite
JP2908297B2 (ja) * 1995-11-24 1999-06-21 イズミ工業株式会社 ピストン鋳造方法
ES2134663T3 (es) * 1996-05-17 1999-10-01 Bayerische Motoren Werke Ag Procedimiento de fabricacion de una pieza fundida de metal ligero, especialmente un bloque de cilindros para motores de combustion interna.
DE19807688C2 (de) * 1998-02-25 2003-06-26 Daimler Chrysler Ag Verwendung einer chromfreien Konversionslösung auf Zirkonbasis als Schutzfilm auf einzugießenden Leichtmetall-Rohlingen einer Zylinderlaufbüchse

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0139910A3 *

Also Published As

Publication number Publication date
DE19958185A1 (de) 2001-06-07
BR0016027A (pt) 2002-11-12
US6732632B1 (en) 2004-05-11
JP2003525123A (ja) 2003-08-26
WO2001039910A3 (fr) 2002-01-31
WO2001039910A2 (fr) 2001-06-07

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