US20040173334A1 - Mold and method for the production of a lost-foam casting model for a light metal cylinder liner - Google Patents

Mold and method for the production of a lost-foam casting model for a light metal cylinder liner Download PDF

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Publication number
US20040173334A1
US20040173334A1 US10/478,789 US47878904A US2004173334A1 US 20040173334 A1 US20040173334 A1 US 20040173334A1 US 47878904 A US47878904 A US 47878904A US 2004173334 A1 US2004173334 A1 US 2004173334A1
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US
United States
Prior art keywords
mold
lost
production
foam casting
casting model
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
US10/478,789
Inventor
Karlheinz Bing
Frank Winger
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 GmbH
Original Assignee
Mahle 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 GmbH filed Critical Mahle GmbH
Assigned to MAHLE GMBH reassignment MAHLE GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BING, KARLHEINZ, WINGERS, FRANK
Publication of US20040173334A1 publication Critical patent/US20040173334A1/en
Priority to US11/491,041 priority Critical patent/US7172011B2/en
Abandoned legal-status Critical Current

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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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00—Casings, e.g. crankcases or frames
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F2200/00—Manufacturing
    • F02F2200/06—Casting
    • F02F2200/08—Casting using a lost model, e.g. foam casting

Definitions

  • the invention relates to a mold and a method for the production of a lost-foam casting model for a light metal cylinder liner of internal combustion engines.
  • the invention occupies itself with the problem of producing a light metal cylinder liner having a structured surface, in simple manner. This problem is solved in that the mold for the production of the lost-foam casting model of a cylinder liner has a structured surface with height variations of 0.8 to 5 mm, at least in partial regions.
  • Advantageous further developments are the object of the dependent claims.
  • the lost-foam casting model consists of polystyrene.
  • the height variations on the surface of the cylinder liner that form the structured surface amount to 0.8 to 5 mm, preferably 1 to 3 mm, and particularly preferably 1 to 2 mm.
  • the height variations can be formed either by grooves or by elevations, and the grooves or elevations can run preferably in the axial direction, in the circumference direction, or in a diagonal direction. Furthermore, grooves and elevations can also extend in wave shape. Combinations of the stated progressions are also possible.
  • the grooves can be made in the mold for the production of the lost-foam casting model by means of milling, for example; the elevations can be applied by means of application welding.
  • the erosion method is also a possibility.
  • the mold for the production of the lost-foam casting model must be parted in such a manner that the lost-foam casting model can be reliably unmolded. It can particularly be divided into two mold halves or four mold parts.
  • FIG. 1 shows a surface, according to the invention, of a mold for the production of a lost-foam casting model.
  • the surface shows diagonally running grooves 1 .
  • elevations can also be formed instead of the grooves.
  • the surface is divided into diamond-shaped individual areas 2 by the grooves 1 .

Abstract

According to the invention a light metal cylinder liner with a surface which facilitates the connection with the surrounding cast material may be produced, whereby the cylinder liner is produced by means of a lost-foam method with a form for production of the cast foam model having a structured surface with height variations of 0.8 to 5 mm, said structuring being for example grooves or longitudinal elevations.

Description

  • The invention relates to a mold and a method for the production of a lost-foam casting model for a light metal cylinder liner of internal combustion engines. [0001]
  • It is known to cast light metal cylinder liners having an elevated silicon content in engine blocks, using the composite casting method. In this connection, it is necessary to produce a good connection, either as a positive lock or in terms of material, between the base material having a lower Si content and the cylinder liner having a higher Si content. A prerequisite for such locking together of the cylinder liner and the base material is, among other things, a rough, fissured surface of the cylinder sleeve that is to be cast into place. [0002]
  • In order to produce this rough and fissured surface, different methods have already been proposed: blasting, milling of depressions, or reshaping of the surface of the cylinder liner by means of pressure rollers. All of the methods require another processing step subsequent to the production of the cylinder liner by means of casting technology. [0003]
  • It is furthermore known from DE 3909521 to produce cylinder liners using the lost-foam method. In this connection, the lost-foam casting model is produced in a multi-part mold. [0004]
  • It is known from DE 19958185, which is not a prior publication, to produce a lost mold, more precisely a lost-foam casting model, having a structured outside surface, in that particles are applied adhesively to the smooth surface of a lost mold, which particles produce undercuttings when the light metal cylinder liner is cast.[0005]
  • The invention occupies itself with the problem of producing a light metal cylinder liner having a structured surface, in simple manner. This problem is solved in that the mold for the production of the lost-foam casting model of a cylinder liner has a structured surface with height variations of 0.8 to 5 mm, at least in partial regions. Advantageous further developments are the object of the dependent claims. [0006]
  • In the production of the lost-foam casting model in the mold according to the invention, a structured outside surface is formed on the model. Later, the model is embedded in casting sand and brought into connection with melt by way of a casting channel. When this is done, the model is replaced by the melt. The surface structure of the model is reproduced on the casting, forming a cylinder liner having a structured surface, without any additional machining being required. [0007]
  • In a standard case, the lost-foam casting model consists of polystyrene. [0008]
  • The height variations on the surface of the cylinder liner that form the structured surface amount to 0.8 to 5 mm, preferably 1 to 3 mm, and particularly preferably 1 to 2 mm. [0009]
  • In this connection, the height variations can be formed either by grooves or by elevations, and the grooves or elevations can run preferably in the axial direction, in the circumference direction, or in a diagonal direction. Furthermore, grooves and elevations can also extend in wave shape. Combinations of the stated progressions are also possible. [0010]
  • The grooves can be made in the mold for the production of the lost-foam casting model by means of milling, for example; the elevations can be applied by means of application welding. The erosion method is also a possibility. [0011]
  • The mold for the production of the lost-foam casting model must be parted in such a manner that the lost-foam casting model can be reliably unmolded. It can particularly be divided into two mold halves or four mold parts. [0012]
  • FIG. 1 shows a surface, according to the invention, of a mold for the production of a lost-foam casting model. The surface shows diagonally running [0013] grooves 1. Likewise, however, elevations can also be formed instead of the grooves. The surface is divided into diamond-shaped individual areas 2 by the grooves 1.

Claims (6)

1. Mold for the production of a lost-foam casting model for a light metal cylinder liner of internal combustion engines,
characterized in that
the mold has a structured surface with height variations of 0.8 to 5 mm, at least in partial regions.
2. Mold for the production of a lost-foam casting model according to claim 1,
characterized in that
the structured surface is formed by grooves (1) in the surface of the mold.
3. Mold for the production of a lost-foam casting model according to claim 1,
characterized in that
the structured surface is formed by elevations in the surface of the mold.
4. Mold for the production of a lost-foam casting model according to claim 1,
characterized in that
the grooves (1) or elevations run in the axial direction, in the circumference direction, or in a diagonal direction, or in wave shape.
5. Method for the production of a lost-foam casting model for a light metal cylinder liner of internal combustion engines,
characterized in that
the surface of the mold in which the lost-foam casting model is produced has a structured surface with height variations of 0.8 to 5 mm, at least in segments.
6. Method according to claim 5,
characterized in that
the surface is structured by means of grooves (1) or elevations, which run in the axial direction, in the circumference direction, or in a diagonal direction, or in wave shape.
US10/478,789 2001-05-25 2002-05-21 Mold and method for the production of a lost-foam casting model for a light metal cylinder liner Abandoned US20040173334A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US11/491,041 US7172011B2 (en) 2001-05-25 2006-07-21 Method for the production of a lost-foam casting model for a light metal cylinder liner

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10125615A DE10125615A1 (en) 2001-05-25 2001-05-25 Mold and method for making a lost foam cast model for a light metal liner
DE10125615.9 2001-05-25
PCT/DE2002/001860 WO2002094474A1 (en) 2001-05-25 2002-05-21 Mould and method for the production of a lost-foam casting model for a light metal cylinder liner

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US11/491,041 Continuation-In-Part US7172011B2 (en) 2001-05-25 2006-07-21 Method for the production of a lost-foam casting model for a light metal cylinder liner

Publications (1)

Publication Number Publication Date
US20040173334A1 true US20040173334A1 (en) 2004-09-09

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Family Applications (2)

Application Number Title Priority Date Filing Date
US10/478,789 Abandoned US20040173334A1 (en) 2001-05-25 2002-05-21 Mold and method for the production of a lost-foam casting model for a light metal cylinder liner
US11/491,041 Expired - Lifetime US7172011B2 (en) 2001-05-25 2006-07-21 Method for the production of a lost-foam casting model for a light metal cylinder liner

Family Applications After (1)

Application Number Title Priority Date Filing Date
US11/491,041 Expired - Lifetime US7172011B2 (en) 2001-05-25 2006-07-21 Method for the production of a lost-foam casting model for a light metal cylinder liner

Country Status (7)

Country Link
US (2) US20040173334A1 (en)
EP (1) EP1390168B1 (en)
JP (1) JP2004526576A (en)
KR (1) KR100886513B1 (en)
BR (1) BR0209991B1 (en)
DE (2) DE10125615A1 (en)
WO (1) WO2002094474A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060254743A1 (en) * 2001-05-25 2006-11-16 Mahle Gmbh Method for the production of a lost-foam casting model for a light metal cylinder liner
US20160222907A1 (en) * 2015-01-29 2016-08-04 Mahle Inc. Cross Hatch Liner Grooves
CN109794593A (en) * 2017-11-16 2019-05-24 铃木株式会社 Castingin component and its manufacturing method

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100930838B1 (en) * 2007-12-05 2009-12-10 (주)아이콘 Suction pad molding method of semiconductor package transfer device and suction pad of semiconductor package transfer device manufactured thereby
JP2009184280A (en) * 2008-02-08 2009-08-20 Komori Corp Cylinder of folder
US8136571B2 (en) * 2009-05-19 2012-03-20 Debruin Mark Carbidic outer edge ductile iron product, and as cast surface alloying process
US20110073061A1 (en) * 2009-09-28 2011-03-31 Jeungsuck Chae Pistons with a rough surface
JP6256524B2 (en) * 2016-05-17 2018-01-10 スズキ株式会社 Cast-in member and manufacturing method thereof
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

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4657063A (en) * 1985-05-17 1987-04-14 Outboard Marin Corporation Foam pattern for casting an air cooled cylinder head
US4986942A (en) * 1988-03-22 1991-01-22 Outboard Marine Corporation Method for forming ported cylinder sleeve liner foam pattern
US5027878A (en) * 1989-10-05 1991-07-02 Deere & Company Method of impregnation of iron with a wear resistant material
US6732632B1 (en) * 1999-12-02 2004-05-11 Mahle Ventiltrieb Gmbh Lost mould for producing a cylindrical bushing sleeve

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JPS60118352A (en) 1983-11-30 1985-06-25 Morikawa Sangyo Kk Production of cylinder liner for embedment by casting and pattern for casting cylinder liner
DE3619170A1 (en) * 1986-06-06 1987-12-10 Basf Ag Use of polystyrene foam as lost pattern in the production of metal castings
JPS63248543A (en) 1987-04-03 1988-10-14 Honda Motor Co Ltd Cylinder liner and its production
FR2626403B1 (en) * 1988-01-27 1990-05-11 Framatome Sa PROTECTION SYSTEM FOR A NUCLEAR REACTOR IN THE EVENT OF A FALL OF AN ANTIREACTIVE ELEMENT
DE3824574C2 (en) * 1988-07-19 1997-07-17 Michael Haeusle Method of casting precision castings
MX9204697A (en) * 1991-09-12 1993-03-01 Ford Motor Co IN SITU CAST IRON BASED COATINGS FOR CYLINDERS.
US5746272A (en) * 1996-09-30 1998-05-05 Johnson & Johnson Professional, Inc. Investment casting
JP2001055956A (en) 1999-08-17 2001-02-27 Asama Giken Co Ltd Cylinder block with liner
DE10125615A1 (en) * 2001-05-25 2002-12-05 Mahle Gmbh Mold and method for making a lost foam cast model for a light metal liner

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4657063A (en) * 1985-05-17 1987-04-14 Outboard Marin Corporation Foam pattern for casting an air cooled cylinder head
US4986942A (en) * 1988-03-22 1991-01-22 Outboard Marine Corporation Method for forming ported cylinder sleeve liner foam pattern
US5027878A (en) * 1989-10-05 1991-07-02 Deere & Company Method of impregnation of iron with a wear resistant material
US6732632B1 (en) * 1999-12-02 2004-05-11 Mahle Ventiltrieb Gmbh Lost mould for producing a cylindrical bushing sleeve

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060254743A1 (en) * 2001-05-25 2006-11-16 Mahle Gmbh Method for the production of a lost-foam casting model for a light metal cylinder liner
US7172011B2 (en) * 2001-05-25 2007-02-06 Mahle Gmbh Method for the production of a lost-foam casting model for a light metal cylinder liner
US20160222907A1 (en) * 2015-01-29 2016-08-04 Mahle Inc. Cross Hatch Liner Grooves
CN109794593A (en) * 2017-11-16 2019-05-24 铃木株式会社 Castingin component and its manufacturing method
CN109794593B (en) * 2017-11-16 2021-02-12 铃木株式会社 Insert casting member and method for manufacturing same

Also Published As

Publication number Publication date
KR100886513B1 (en) 2009-03-02
EP1390168A1 (en) 2004-02-25
US7172011B2 (en) 2007-02-06
JP2004526576A (en) 2004-09-02
EP1390168B1 (en) 2006-07-12
DE50207505D1 (en) 2006-08-24
DE10125615A1 (en) 2002-12-05
BR0209991B1 (en) 2011-04-19
US20060254743A1 (en) 2006-11-16
WO2002094474A1 (en) 2002-11-28
BR0209991A (en) 2004-04-06
KR20030097900A (en) 2003-12-31

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Legal Events

Date Code Title Description
AS Assignment

Owner name: MAHLE GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BING, KARLHEINZ;WINGERS, FRANK;REEL/FRAME:015258/0399

Effective date: 20031209

STCB Information on status: application discontinuation

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