EP1622734B1 - Procede de moulage par centrifugation - Google Patents

Procede de moulage par centrifugation Download PDF

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Publication number
EP1622734B1
EP1622734B1 EP04728325A EP04728325A EP1622734B1 EP 1622734 B1 EP1622734 B1 EP 1622734B1 EP 04728325 A EP04728325 A EP 04728325A EP 04728325 A EP04728325 A EP 04728325A EP 1622734 B1 EP1622734 B1 EP 1622734B1
Authority
EP
European Patent Office
Prior art keywords
alloy
cast iron
casting
region
alloys
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
EP04728325A
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German (de)
English (en)
Other versions
EP1622734A2 (fr
Inventor
Bernd Elbracht
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.)
M Juergensen & Co KG GmbH
Original Assignee
M Juergensen & Co KG 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 M Juergensen & Co KG GmbH filed Critical M Juergensen & Co KG GmbH
Priority to PL04728325T priority Critical patent/PL1622734T3/pl
Publication of EP1622734A2 publication Critical patent/EP1622734A2/fr
Application granted granted Critical
Publication of EP1622734B1 publication Critical patent/EP1622734B1/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
    • 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
    • B22D13/00—Centrifugal casting; Casting by using centrifugal force
    • B22D13/02—Centrifugal casting; Casting by using centrifugal force of elongated solid or hollow bodies, e.g. pipes, in moulds rotating around their longitudinal axis
    • B22D13/023—Centrifugal casting; Casting by using centrifugal force of elongated solid or hollow bodies, e.g. pipes, in moulds rotating around their longitudinal axis the longitudinal axis being horizontal

Definitions

  • the invention relates to a method for centrifugal casting, in particular rotationally symmetrical castings such as cylinder liners made of at least two different cast iron alloys, in particular a method for producing cylinder liners with increased wear resistance of the alloy in the wear area to avoid local wear.
  • Cylinder liners are usually used in large engines, where they are - especially in poor lubricity or fuel consistency, as may often occur in marine and stationary engines - are exposed to heavy abrasion. In particular, in the region of the upper reversal point of the first piston ring, the liner inner surface is significantly stressed, so that there are first signs of wear.
  • the invention has for its object to find a cheaper way to locally increase the wear resistance.
  • the second alloy Upon displacement of the first alloy and "flow" on the surface of the first alloy (on the inside of the bushing), the second alloy will mix with the underlying first alloy and may, in the regions where it does not have the desired thickness Whereabouts achieved when machining (drilling) are removed as a mixed alloy. It is possible to introduce not just two, but three or more alloys in succession, if even more complex castings are to be achieved.
  • the wear-resistant alloy penetrates very accurately, d. H. with steep transition angles with respect to the longitudinal extent or the inner surface of the casting in the already previously solidified material of the first alloy composition, so that is avoided that thin layers during running of the engine - the movement of the piston rings over the material boundary - are exposed to high mechanical loads ,
  • the alloy of the inner region is an arbitrary iron-carbon material
  • the outer side consists of cast iron of a different composition
  • cast iron may be any iron-carbon alloy, including a steel.
  • the second alloy is added after the first, outer alloy has begun to solidify, such that a portion of the first alloy is reflowed by the added heat of the (liquid) second alloying addition, and the material there is melted by trailing liquid cast iron due to the high Rotational speed is displaced during centrifugal casting. High centrifugal force and temperature ensure that the second alloy addition material is intimately fused with that of the first alloy composition without inclusions.
  • An example of a second alloy which tends to hard phase and thus to increase the wear resistance is an alloy which is characterized by additions of molybdenum and / or phosphorus and / or boron and / or an increased proportion of vanadium and / or chromium.
  • the cylinder liners produced in this way are brought to a dimension as usual on inside and outside dimension after drilling, annealed and finally processed in a honing process.
  • the increased wear resistance is advantageous because the surface structure generated by honing is retained longer.
  • the inventive method for centrifugal casting in particular of rotationally symmetrical castings such as cylinder liners of at least two different Cast iron alloys in composite casting, is performed with a first introduction of a first cast iron alloy in the liquid state into a rotating mold to produce at least the outer shell of the casting, and then possibly several times allowed to cool the previously produced casting substantially as conventional.
  • a second or even another cast iron alloy is introduced in a liquid state to a defined portion of the inner surface while maintaining the rotation of the mold, wherein the second or further cast iron alloy in a Boundary merges with the cooled material from the first or previously introduced cast iron alloy and forms a cast iron with other material properties during solidification.
  • an inner region of the casting is then subjected to the further cast iron alloy with the further cast iron alloy with remelting of a defined region in partial thickness of the shell of the first or preceding cast iron alloy located there ,
  • the region of the upper reversal point of the uppermost piston ring in the cylinder liner with a second cast iron alloy with re-melting of a portion of there already cooler first cast iron alloy with second cast iron alloy is applied until in the region in a desired layer thickness, the first cast iron alloy is displaced, preferably Areas of the casting in which mixed material (22) of both alloys, of the molten region at the top dead center of the displaced first alloy and the second alloy, deposited in interior regions within the first alloy shell remote from the introduction site of the second alloy, at Bore out the cylinder liner can be removed.
  • the spin casting apparatus shown features a liquid second material injection device which directs the flow of molten second alloy substantially radially outward onto the first alloy shell.
  • a cylinder liner produced in this way ( Fig. 3 ; and in detail: Fig. 4 ) preferably has a transitional transition between the two alloys, at the edge of or the region (s) (e) in which the second alloy has displaced the first alloy which has become blunt after drilling an interior region Angle to the cylinder liner inner side extends, in particular connects to the inside.
  • the exterior material used is cast iron with lamellar graphite (GJL) or nodular graphite (GJS) and as the material of the interior cast iron with lamellar graphite with a high proportion of hard phase.
  • GJL lamellar graphite
  • GJS nodular graphite
  • Table 1 shows exemplary limits of ingredients.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Glass Compositions (AREA)

Claims (7)

  1. Procédé de coulée centrifuge de pièces coulées à symétrie de révolution, telles que les chemises de cylindre, à partir d'au moins deux alliages de fer différents en coulée composite, dans lequel - dans une zone limite - un autre alliage (12) et la matière refroidie du premier alliage (16) ou alliage introduit auparavant fondent ensemble formant ainsi, lors de la solidification, une fonte de fer ayant d'autres propriétés de matière, ledit procédé comprenant les étapes suivantes :
    - introduire un premier alliage (10) à l'état liquide dans une coquille tournante (14) pour réaliser au moins une enveloppe extérieure (16) de ladite pièce coulée (18),
    - faire refroidir la pièce coulée produite jusqu'ici, et ceci jusqu'à ce que ledit premier alliage ou le(s) alliage(s) introduit(s) jusqu'ici commence(nt) à se solidifier,
    - Introduire au moins un autre alliage (12) à l'état liquide sur une zone partielle de la face intérieure tout en maintenant la rotation de ladite coquille (14),
    caractérisé par le fait que
    l'introduction d'au moins un autre alliage (12) à l'état liquide sur une zone partielle de la face intérieure se faitjusqu'à ce que, dans une épaisseur souhaitée de couche, au niveau d'un anneau d'impact, ledit premier alliage de fonte de fer (10) soit repoussé d'une manière précise et ciblée à des angles raides de transition.
  2. Procédé selon la revendication 1, caractérisé par le fait que l'on utilise deux alliages de fonte de fer de composition chimique différente, le deuxième alliage de fonte de fer (12) présentant, après la solidification, une plus grande résistance à l'usure.
  3. Procédé selon la revendication 1 ou 2 pour la fabrication de pièces coulées à symétrie de révolution pourvues localement d'une dureté plus importante, telles que les chemises de cylindre, à partir d'au moins deux alliages (10, 12), caractérisé par le fait qu'une zone partielle de la pièce coulée est impactée par l'autre alliage de fonte de fer (12), une zone définie en épaisseur partielle de ladite enveloppe (16) faite du premier alliage de fonte de fer ou alliage introduit auparavant étant refondue.
  4. Procédé selon la revendication 3 pour la fabrication de chemises de cylindre, caractérisé par le fait que la zone du point supérieur de retournement d'un segment de piston supérieur dans une chemise de cylindre est impactée par le deuxième alliage de fonte de fer (12) tout en refondant une zone du premier alliage de fonte de fer y situé et déjà plus froid, donc par le deuxième alliage de fonte de fer à l'état liquide jusqu'à ce que le premier alliage de fonte de fer (10) soit repoussé dans l'épaisseur souhaitée de couche.
  5. Procédé selon la revendication 4, caractérisé par le fait que, pour la réalisation de chemises de cylindre, les régions de la pièce coulée où se dépose de la matière mélangée (22) des deux alliages,
    - du premier alliage (10) repoussé de la zone fondue et
    - du deuxième alliage introduit (12),
    dans des zones intérieures au sein de l'enveloppe (16) en premier alliage (10), à distance de l'endroit d'introduction du deuxième alliage (12) et de l'endroit de fusion,
    sont enlevées lors d'un alésage de la chemise de cylindre (18).
  6. Chemise de cylindre produite au moyen d'un procédé selon les revendications 1 à 5, ladite pièce coulée à symétrie de révolution de la chemise de cylindre étant réalisée dans au moins deux alliages de fer différents en coulée composite, un autre alliage (12) et la matière refroidie du premier alliage (16) ou alliage introduit auparavant étant fondus ensemble dans une zone limite et ayant formé ainsi, lors de la solidification, une fonte de fer présentant d'autres propriétés de matière,
    caractérisée par le fait que
    après avoir réalisé l'alésage, une transition (28) entre deux alliages (10, 12), à la limite de la zone (26) où ledit deuxième alliage (12) a repoussé ledit premier alliage (10), s'étend à angle obtus par rapport à la face intérieure de la chemise de cylindre.
  7. Chemise de cylindre selon la revendication 6, caractérisée par le fait que l'on choisit en tant que matière d'une zone partielle de la face intérieure une fonte de fer à graphite lamellaire et avec une plus grande portion de phase dure.
EP04728325A 2003-05-12 2004-04-20 Procede de moulage par centrifugation Expired - Lifetime EP1622734B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL04728325T PL1622734T3 (pl) 2003-05-12 2004-04-20 Sposób odlewania odśrodkowego

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10321391A DE10321391B3 (de) 2003-05-12 2003-05-12 Verfahren zum Schleuderguss
PCT/DE2004/000837 WO2004101197A2 (fr) 2003-05-12 2004-04-20 Procede de moulage par centrifugation

Publications (2)

Publication Number Publication Date
EP1622734A2 EP1622734A2 (fr) 2006-02-08
EP1622734B1 true EP1622734B1 (fr) 2009-11-25

Family

ID=32981328

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04728325A Expired - Lifetime EP1622734B1 (fr) 2003-05-12 2004-04-20 Procede de moulage par centrifugation

Country Status (6)

Country Link
EP (1) EP1622734B1 (fr)
JP (1) JP2006528073A (fr)
AT (1) ATE449655T1 (fr)
DE (2) DE10321391B3 (fr)
PL (1) PL1622734T3 (fr)
WO (1) WO2004101197A2 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ302712B6 (cs) * 2010-02-04 2011-09-14 Afe Cronite Cz S.R.O. Technologie výroby bimetalických a vícevrstvých odlitku odlévaných gravitacním nebo odstredivým litím
CN103286292B (zh) * 2012-02-24 2015-02-25 常州市姚氏铸造材料有限公司 汽缸套毛坯离心铸造成型模具
CN106180626B (zh) * 2016-10-09 2019-08-23 中原内配集团股份有限公司 毛刺气缸套生产设备及毛刺气缸套
DE202017001793U1 (de) * 2016-10-09 2018-01-10 Zynp Corporation Herstellungseinrichtung für Grat-Zylinderlaufbuchse und Grat-Zylinderlaufbuchse
CN109513902A (zh) * 2018-11-28 2019-03-26 湖南四昉新材料有限公司 一种双金属轧辊套的加工方法、加工装置以及双金属轧辊套
CN110744026B (zh) * 2019-12-10 2021-04-23 安徽省岳西缸套有限公司 缸套离心铸造机
CN112846126B (zh) * 2020-12-31 2022-05-17 北京科技大学 多组元径向功能梯度材料设备的熔体流速调节系统及方法

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5736058A (ja) * 1980-08-12 1982-02-26 Kubota Ltd Fukugoenbanjorooranoseizoho
JPS6035191B2 (ja) * 1980-11-10 1985-08-13 株式会社ト−モク 連続供給シ−トの流体塗布装置
JPS586768A (ja) * 1981-07-01 1983-01-14 Kubota Ltd 複合耐摩耗鋳物及びその製造法
JPS5919792A (ja) * 1982-07-26 1984-02-01 日揮株式会社 炭素析出防止性遠心力鋳造二層管
CH661476A5 (de) * 1982-07-31 1987-07-31 Kubota Ltd Verbundzylinderlaufbuechse fuer verbrennungsmotoren.
JPH0235021B2 (ja) * 1982-07-31 1990-08-08 Kubota Ltd Fukugoshirindaarainaa
JPS6087964A (ja) * 1983-10-20 1985-05-17 Nippon Kokan Kk <Nkk> 複合金属管の製造方法
DD224782B1 (de) * 1984-05-16 1988-07-06 Thaelmann Schwermaschbau Veb Verfahren zur herstellung von verbundgusskoerpern
JPS6123560A (ja) * 1984-07-13 1986-02-01 Kubota Ltd 複合アダマイトロ−ルの外殻の製造方法
JPS6233053A (ja) * 1985-08-05 1987-02-13 Sumitomo Light Metal Ind Ltd 多重管の製造方法
JP2857568B2 (ja) * 1993-05-21 1999-02-17 株式会社クボタ 複合シリンダライナー
FR2765819B1 (fr) * 1997-07-09 1999-08-27 Jean Claude Werquin Procede de coulee centrifuge verticale a hydrodynamique amelioree et cylindres de laminage composites, a structure equiaxes, en comportant application
JPH11236852A (ja) * 1998-02-20 1999-08-31 Kubota Corp 大型ディーゼルエンジンライナー

Also Published As

Publication number Publication date
EP1622734A2 (fr) 2006-02-08
WO2004101197A2 (fr) 2004-11-25
DE10321391B3 (de) 2004-10-14
DE502004010418D1 (de) 2010-01-07
ATE449655T1 (de) 2009-12-15
PL1622734T3 (pl) 2010-09-30
JP2006528073A (ja) 2006-12-14
WO2004101197A3 (fr) 2005-01-06

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