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EP0272471B1 - Procédé et moule pour la fabrication d'un objet en fonte et objet ainsi obtenu - Google Patents

Procédé et moule pour la fabrication d'un objet en fonte et objet ainsi obtenu Download PDF

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Publication number
EP0272471B1
EP0272471B1 EP87117268A EP87117268A EP0272471B1 EP 0272471 B1 EP0272471 B1 EP 0272471B1 EP 87117268 A EP87117268 A EP 87117268A EP 87117268 A EP87117268 A EP 87117268A EP 0272471 B1 EP0272471 B1 EP 0272471B1
Authority
EP
European Patent Office
Prior art keywords
glass
cast iron
core
moulding core
casting
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
EP87117268A
Other languages
German (de)
English (en)
Other versions
EP0272471A2 (fr
EP0272471A3 (en
Inventor
Rudi Hass
Georg Dipl.-Ing. Jansen
Wilhelm Kallen
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.)
EISENGIESSERIE MONFORTS GMBH & CO
Original Assignee
Eisengiesserei Monforts GmbH and Co
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25850353&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0272471(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Eisengiesserei Monforts GmbH and Co filed Critical Eisengiesserei Monforts GmbH and Co
Priority to AT87117268T priority Critical patent/ATE79064T1/de
Publication of EP0272471A2 publication Critical patent/EP0272471A2/fr
Publication of EP0272471A3 publication Critical patent/EP0272471A3/de
Application granted granted Critical
Publication of EP0272471B1 publication Critical patent/EP0272471B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/10—Cores; Manufacture or installation of cores
    • B22C9/101—Permanent cores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
    • B22C1/02—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by additives for special purposes, e.g. indicators, breakdown additives
    • B22C1/12—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by additives for special purposes, e.g. indicators, breakdown additives for manufacturing permanent moulds or cores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/06—Permanent moulds for shaped castings
    • B22C9/064—Locating means for cores
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/131—Glass, ceramic, or sintered, fused, fired, or calcined metal oxide or metal carbide containing [e.g., porcelain, brick, cement, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/131—Glass, ceramic, or sintered, fused, fired, or calcined metal oxide or metal carbide containing [e.g., porcelain, brick, cement, etc.]
    • Y10T428/1317—Multilayer [continuous layer]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/23—Sheet including cover or casing
    • Y10T428/232—Encased layer derived from inorganic settable ingredient
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/23—Sheet including cover or casing
    • Y10T428/239—Complete cover or casing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
    • Y10T428/2991—Coated
    • Y10T428/2993—Silicic or refractory material containing [e.g., tungsten oxide, glass, cement, etc.]
    • Y10T428/2996—Glass particles or spheres
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/21—Elements
    • Y10T74/2101—Cams

Definitions

  • the invention relates to a method for casting a cast iron camshaft having an elongated cavity and intended for use in an internal combustion engine. It also relates to a casting mold with a core in the iron foundry and a cast iron body.
  • an elongated cast iron part is to be cast as a hollow body with a correspondingly elongated passage, a core must be made and inserted into the mold into which the molten iron is to be poured.
  • GB-PS 11 91 202 it is proposed to use a steel tube with a steel rod inserted therein and coated with insulating material as the mold core. In this process, liquid iron is poured into the mold and then the steel rod is pulled out of the steel tube that becomes part of the cast body.
  • a major disadvantage of this procedure is that a very hard, difficult-to-drill quench layer is formed at the boundary between the steel and the cast iron. The effort for the steel pipe is considerable.
  • the mandrel consists of a tubular steel core wrapped with ceramic paper or similar insulating material.
  • the ceramic paper forms an insulating layer between the melt poured into the mold and the much cooler steel tube.
  • the insulating layer is used up by the molten iron flowing in during casting, e.g. B. burned, so that the inner metal tube can be pulled out of the cast body after it solidifies. It is very tedious to wrap each mold core with the intended insulating material before inserting it into the mold; in addition, the surface of the winding is not completely flat, so that the inner surface of the through opening of the cast iron piece to be manufactured has to be reworked.
  • the invention has for its object to provide a method for producing a hollow cast camshaft, i.e. a cast iron body that is thin relative to the length, which allows both hollow bodies without a casting opening or hollow bodies with very thin through openings or, for example, only suitable for supplying oil to bearings Cast blind holes, as well as hollow bodies with, for example weight-reducing, relatively thick cylindrical and / or adapted to the outer contour of the workpiece cavity relative to the workpiece outer diameter.
  • the inner surface of the cast part if and insofar as it is attainable or of importance, should correspond to the surface quality of a mechanical bore without substantial reworking, after all a problem-free handling should also be possible in the practice of a foundry.
  • a casting mold suitable for carrying out the method according to the invention should be able to have a mold core which can also be used without supporting its central region of its length even with length / diameter ratios of the core of up to 500 mm / 5 mm.
  • a hollow cast camshaft should also be able to be produced by the method according to the invention.
  • the solution according to the invention for the method for producing a camshaft is that a mold core made of glass is used during casting.
  • the mold core provided according to the invention can have a smooth cylindrical surface or a surface contoured to the requirements for stability, weight or the like. Improvements and further refinements of the invention are specified in the subclaims.
  • a casting mold which is suitable for carrying out an exemplary embodiment of the method can have a mold core consisting of glass, which is completely enclosed by the cast iron body to be produced.
  • An exemplary embodiment of a cast iron body produced according to the invention can have a cavity which is enclosed on all sides during casting and on whose inner contour glass, in particular quartz material, bears.
  • the invention provides a casting method and a casting mold with a rod-like elongated mandrel, which allow an elongated camshaft to be cast as a hollow body in the iron foundry, without substantial reworking of the inner contour being necessary and without quenching layers or hard to drill through in the camshaft the like.
  • the method and the mold with a glass tube as the mold core are particularly well suited for producing a camshaft, which is known to be relatively thin for its length, but a part for reasons of weight savings or as an oil supply line or should have a continuous longitudinal cavity.
  • any remaining glass can be left in its passage sack cavity or the like with the simplest means, e.g. B. are known for removing sand cores, in particular by simple drilling, by vibration, blasting media or high pressure water.
  • the mold core itself can be designed as a hollow body or solid. Hollow mold cores are preferred, particularly with regard to mechanical or thermal stability.
  • the mandrel can be longer than the shaft and therefore be supported at least on one of its longitudinal ends outside the outer contour of the camshaft. If the mandrel is only supported at one longitudinal end outside the outer contour of a camshaft, it is within the mold with the help of a core support. e.g. B. position as usual with the help of steel pieces, especially to rule out floating in the initially liquid iron.
  • the mandrel completely protrudes from the mold with its two longitudinal ends, it usually requires no supports up to a diameter / length ratio of only about 1: 100, so that there is a rod-like or rod-like elongated mandrel, with the help of which an appropriately elongated core is provided To produce a continuous hollow cast iron body. Cores that are relatively long are appropriately supported in the middle at the top against floating.
  • the method according to the invention preferably also relates to producing a cast iron body which has a defined cavity without any access to the outside due to the casting.
  • a cavity can also be elongated in a rod-like manner and take into account any value of stability, weight or the like of the workpiece to be produced be specified by its contour.
  • a mandrel for casting a cast iron body having a defined cavity consists in melting a glass tube at both longitudinal ends and using core supports at the longitudinal ends inside the mold in a manner which is sufficiently stable for the casting is positioned.
  • the core supports can preferably consist of an iron ring to be pushed over the mold core, on which support legs are attached, for example at a mutual distance of 120 °.
  • the closed mold core which remains completely within the mold during casting, can have any configuration as a closed glass bulb, but also as a solid glass body.
  • the term “cavity” of the cast iron body is understood according to the invention to mean a through opening with two — possibly axial — entrances, a blind hole or a space that is completely enclosed by the cast iron during casting. While in the presence of an opening leading to the outside due to the casting, the glass remaining inside the cavity or on the walls thereof can be removed after the casting, such a post-treatment is not always necessary or desirable in the cavity enclosed on all sides.
  • a cavity enclosed on all sides is particularly advantageous if only a reduction in weight is desired and / or if the cavity is fully defined should not have blind holes to be produced by casting with sufficient accuracy or should have openings that penetrate into the interior, which can be subsequently created with the aid of a drill, which is not disturbed by any casting hole.
  • blind holes in general - usually already during the design of the cast body - it must be ensured that the drill does not reach or penetrate the glass core, because otherwise it is usually necessary to dispose of the glass completely.
  • through-holes are to be drilled, the interior of the cavity should generally be treated in the same way as in the case of cavities which are cast on one or more sides.
  • Quartz glass is preferred, and quartz material in particular because of the reduced expenditure. Quartz glass is made from crystalline quartz by complete melting and degassing. In contrast, the quartz material which has proven particularly useful in the context of the present invention can already be produced by partially melting or sintering quartz sand. In practice, glasses that have previously been used to draw samples from a steel or iron melt for analysis by pipette type are also favorable. If contoured cores are required, a mold core according to the invention consisting of glass can be combined with glass parts of larger or smaller diameter or with a conventional mold core made of sand. The contoured cores of the type according to the invention can also run through the shape or end on one side or even all around within the shape.
  • the section through a casting mold according to FIG. 1 shows the lower mold 1, the upper mold 2 and a glass tube 3 serving as the mold core.
  • the hatched cavity between the lower mold 1 and the upper mold 2 is filled with the cast iron which later forms the cast iron body 4.
  • the softening point of the glass 3 used to manufacture the glass tube is far below the temperature of the liquid iron, the casting and subsequent cooling of the cast iron body 4 result in a smooth inner surface 5 of the casting 4 corresponding to the surface quality of the glass tube 3.
  • Fig. 2 shows a perspective view of a lower mold 6 and a mandrel 7, with the aid of which a camshaft can be produced.
  • the lower mold 6 has the recesses 8 corresponding to the outer shape of the cast iron body 4 to be produced.
  • raised zones 9 are provided on the surface of the molded core 7 designed as a glass tube. The material distribution or removal is preferably made such that the cast iron body 4 to be produced has largely the same wall thickness everywhere.
  • Fig. 3 shows a shape in section with mold core 7 enclosed on all sides between lower mold 1 and upper mold 2. This is positioned in the cavity remaining between lower mold 1 and upper mold 2 with the aid of three core supports 10 each such that the cast iron piece 4 to be produced has the desired inner contour receives.
  • the core supports 10 are to be dimensioned such that they not only support the mandrel 7 but can also resist its buoyancy in the liquid iron.
  • depressions 8 and raised zones 9 on the lower and upper mold 1, 2 or on the mold core itself can also be provided with an enclosed mold core 7, which correspond to a cam of the cast iron piece 4 to be produced.
  • the mold core 7 to be used in a casting mold according to FIG. 3 can be designed both as a hollow body and as a solid body made of glass, preferably quartz. Since the core is to be built into the cast iron body essentially for the purpose of saving weight, it is of course particularly expedient to use a hollow body made of glass as the mold core. Because of the relatively low (compared to iron) specific weight of glass, there is also a considerable reduction in the weight of the cast iron body produced, even when using a solid glass body.
  • the mandrel in addition to being a tube that is open on one or both sides, is also — and preferably — designed as a hollow body made of glass.
  • a glass bulb was sealed under normal pressure, so there was normal air pressure in the bulb.
  • Such a piston was positioned with the aid of core supports between the upper and lower molds so that they had the desired distance from the outer mold everywhere. After casting and cooling the cast iron body, it could be determined by ultrasound that the hollow piston had not changed its position during casting. The further check by sawing the cast body also showed a perfect design and exact position of the cavity enclosed on all sides in the workpiece.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Mold Materials And Core Materials (AREA)

Claims (9)

  1. Procédé de coulée d'un arbre à cames en fonte prévu pour être utilisé dans un moteur à combustion, présentant en extension longitudinale un espace creux,
       caractérisé en ce que
       un noyau de moule (7) en verre est utilisé lors de la coulée.
  2. Procédé selon la revendication 1,
       caractérisé en ce que
       un tube de verre traversant l'arbre à cames dans sa longueur est utilisé comme noyau de moule (7).
  3. Procédé selon la revendication 1
       caractérisé en ce que,
       un corps en verre creux, à entourer de toutes parts par de la fonte, en particulier un récipient fermé en verre, est utilisé comme noyau de moule (7).
  4. Procédé selon la revendication 1,
       caractérisé en ce que
       un corps en verre massif, restant de préférence à l'intérieur de la fonte, est utilisé comme noyau de moule (7).
  5. Procédé selon une ou plusieurs des revendications 1 à 4,
       caractérisé en ce que,
       le noyau de moule (7) est positionné à l'aide du supports de moule (10), composés en particulier d'un anneau à glisser au-dessus du noyau de moule (7) sur lequel sont montées des pattes d'appui.
  6. Procédé selon ou plusieurs des revendications 1 à 5,
       caractérisé en ce que,
       le noyau de moule (7) est fabriqué en un matériau du type de la matière utilisée pour un tube en verre adapté au prélèvement d'éprouvettes dans un bain d'acier ou de fer, en particulier en verre quartzeux.
  7. Procédé selon une ou plusieurs des revendications 1 à 5,
       caractérisé en ce que,
       le noyau de moule (7) est fabriqué en silice fondue.
  8. Moule comportant un noyau de moule, en particulier d'extension longitudinale en forme de barreau, pour la mise en oeuvre, dans la coulée de fonte, du procédé selon l'une au moins des revendications 1 à 7,
       caractérisé par
       un noyau de moule (7) en verre, à entourer de toutes parts par le corps (4) en fonte à fabriquer.
  9. Corps (4) en fonte fabriqué selon le procédé conforme à l'une au moins des revendications 1 à 7,
       caractérisé par
       un espace creux, entouré de toutes parts lors de la coulée, sur le contour intérieur duquel est appliqué du verre, en particulier de la silice fondue.
EP87117268A 1986-12-15 1987-11-24 Procédé et moule pour la fabrication d'un objet en fonte et objet ainsi obtenu Expired - Lifetime EP0272471B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87117268T ATE79064T1 (de) 1986-12-15 1987-11-24 Verfahren und giessform zum herstellen eines gusseisenkoerpers und danach hergestellter gusseisenkoerper.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3642750 1986-12-15
DE3642750 1986-12-15
DE3712609 1987-04-14
DE19873712609 DE3712609A1 (de) 1986-12-15 1987-04-14 Verfahren und giessform zum herstellen eines gusseisenkoerpers und danach hergestellter gusseisenkoerper

Publications (3)

Publication Number Publication Date
EP0272471A2 EP0272471A2 (fr) 1988-06-29
EP0272471A3 EP0272471A3 (en) 1990-01-17
EP0272471B1 true EP0272471B1 (fr) 1992-08-05

Family

ID=25850353

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87117268A Expired - Lifetime EP0272471B1 (fr) 1986-12-15 1987-11-24 Procédé et moule pour la fabrication d'un objet en fonte et objet ainsi obtenu

Country Status (7)

Country Link
US (2) US4832107A (fr)
EP (1) EP0272471B1 (fr)
KR (1) KR960003708B1 (fr)
BR (1) BR8706792A (fr)
CA (1) CA1285741C (fr)
DE (2) DE3712609A1 (fr)
ES (1) ES2033776T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0839990A1 (fr) 1996-11-01 1998-05-06 Roland Klaar Arbre à cames assemblé
CN107442743A (zh) * 2017-08-21 2017-12-08 安徽省含山县兴建铸造厂 一种铝合金制品壳型铸造方法

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3008759B2 (ja) * 1992-12-18 2000-02-14 株式会社リケンキャステック チル面に給油孔をもつ中空カムシャフトとその製造法
US5479981A (en) * 1993-12-29 1996-01-02 Hyundai Motor Company Method for casting a hollow camshaft for internal combustion engine
CH688184A5 (de) * 1994-04-06 1997-06-13 Fischer Ag Georg Verfahren zum Herstellen eines Gussstueckes mit einem langgestreckten Hohlraum, insbesondere einer Nockenwelle.
AT405916B (de) * 1995-02-16 1999-12-27 Miba Sintermetall Ag Verfahren zum herstellen eines nockens für eine gefügte nockenwelle
JPH0970644A (ja) * 1995-09-05 1997-03-18 Toyota Motor Corp 樹脂中子
US5725586A (en) * 1995-09-29 1998-03-10 Johnson & Johnson Professional, Inc. Hollow bone prosthesis with tailored flexibility
US5911267A (en) * 1996-11-13 1999-06-15 Georg Fischer Disa, Inc. Cope with bore for gassing cores
US5885427A (en) * 1997-06-12 1999-03-23 Corrpro Companies, Inc. Cast iron anode and method of making
DE19925512B4 (de) * 1999-06-02 2009-02-05 Nemak Dillingen Gmbh Gießform
US7629292B2 (en) * 2000-10-19 2009-12-08 Battelle Energy Alliance, Llc Composite media for ion processing
DE10061173A1 (de) * 2000-12-07 2002-06-27 Winter Fritz Eisengiesserei Verfahren, Vorrichtung und Eisengußlegierung zum Herstellen einer Nockenwelle sowie Nockenwelle mit angegossenen Nocken
KR20030069656A (ko) * 2002-02-22 2003-08-27 최창옥 석영 유리 코어를 사용하는 소경 중공 주물품의 주조방법
DE10333872B4 (de) * 2003-07-17 2015-01-22 Mahle International Gmbh Verwendung einer löslichen Glaszusammensetzung als Gießkern
DE102004009488B4 (de) * 2004-02-27 2007-10-11 Mahle Ventiltrieb Gmbh Kernstütze und Gießform mit mindestens einer solchen Kernstütze
DE102006030699B4 (de) * 2006-06-30 2014-10-02 Daimler Ag Gegossener Stahlkolben für Verbrennungsmotoren
JP5417557B2 (ja) * 2007-11-27 2014-02-19 国立大学法人東北大学 内歯車の製造方法
US8533946B2 (en) * 2011-12-14 2013-09-17 GM Global Technology Operations LLC Method of manufacturing a crankshaft
CN104353791B (zh) * 2014-11-13 2016-09-21 四川南车共享铸造有限公司 一种油管铸造用砂芯结构及其制备方法、应用
CN106238689A (zh) * 2016-08-31 2016-12-21 广西玉柴机器股份有限公司 铸造发动机油道长孔的工艺方法

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1453593A (en) * 1922-08-11 1923-05-01 Earl Holley Coating for metal molds
DE526740C (de) * 1929-04-17 1931-06-10 Albert Stahn Gasdichter Gusskern
US2304879A (en) * 1940-05-15 1942-12-15 Joseph S Brazil Casting method
DE744640C (de) * 1941-11-04 1944-01-21 Arthur Monzer Aus Sand bestehender Gusskern mit einer glasigen Oberflaechenschicht und Verfahren zur Herstellung desselben
US2362875A (en) * 1943-06-03 1944-11-14 Austenal Lab Inc Casting procedure
DE823644C (de) * 1943-06-03 1951-12-06 Nicolas Herzmark Verfahren zum Giessen harter hochschmelzender metallischer Gegenstaende mit feinen OEffnungen, Loechern oder Bohrungen
US3047409A (en) * 1955-02-03 1962-07-31 Owens Corning Fiberglass Corp Methods for combining metals and compositions containing metals with glass and materials produced therefrom
DE1132295B (de) * 1955-07-11 1962-06-28 Hills Mccanna Co Giessverfahren fuer die Herstellung genau gegossener Hohlraeume in Gussstuecken
US2812562A (en) * 1956-06-05 1957-11-12 Hills Mccanna Co Method of casting metallic articles
DE1259511B (de) * 1964-08-12 1968-01-25 Karl Heinz Toennes Verwendung hohler Glaskerne
GB1191202A (en) * 1967-04-01 1970-05-13 Nippon Piston Ring Co Ltd Method of Producing Cam Shafts and Cam Shafts Produced by Such Method
SE360813B (fr) * 1971-03-15 1973-10-08 Saab Scania Ab
US3837899A (en) * 1972-06-14 1974-09-24 Continental Oil Co Method of coating the interior surface of a metal vessel and the coated vessel
US4048352A (en) * 1973-02-15 1977-09-13 United States Steel Corporation Method of producing a refractory lining in a cylinder or tube
GB1596442A (en) * 1978-02-07 1981-08-26 Lydmet Ltd Casting of long hollow objects
JPS5976655A (ja) * 1982-10-26 1984-05-01 Toyota Motor Corp 中空カムシヤフトの製造方法
JPS619959A (ja) * 1984-06-27 1986-01-17 Honda Motor Co Ltd 中空軸の鋳造方法

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0839990A1 (fr) 1996-11-01 1998-05-06 Roland Klaar Arbre à cames assemblé
DE19645112A1 (de) * 1996-11-01 1998-05-14 Roland Klaar Gebaute Nockenwelle
US5992265A (en) * 1996-11-01 1999-11-30 Eisengiesserei Monforts Gmbh & Co. Built-up camshaft
CN107442743A (zh) * 2017-08-21 2017-12-08 安徽省含山县兴建铸造厂 一种铝合金制品壳型铸造方法

Also Published As

Publication number Publication date
KR880007151A (ko) 1988-08-26
EP0272471A2 (fr) 1988-06-29
BR8706792A (pt) 1988-07-05
CA1285741C (fr) 1991-07-09
US4927688A (en) 1990-05-22
ES2033776T3 (es) 1993-04-01
EP0272471A3 (en) 1990-01-17
DE3780926D1 (de) 1992-09-10
US4832107A (en) 1989-05-23
DE3712609A1 (de) 1988-06-23
KR960003708B1 (ko) 1996-03-21

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