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EP2841223B1 - Procédé et outil de coulée - Google Patents

Procédé et outil de coulée Download PDF

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Publication number
EP2841223B1
EP2841223B1 EP13723434.0A EP13723434A EP2841223B1 EP 2841223 B1 EP2841223 B1 EP 2841223B1 EP 13723434 A EP13723434 A EP 13723434A EP 2841223 B1 EP2841223 B1 EP 2841223B1
Authority
EP
European Patent Office
Prior art keywords
piston
casting
axis
rotation
filling
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.)
Not-in-force
Application number
EP13723434.0A
Other languages
German (de)
English (en)
Other versions
EP2841223A2 (fr
Inventor
Celestine OBUNA
Jacques Guyon
Thomas Hutzler
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.)
Federal Mogul Nuernberg GmbH
Original Assignee
Federal Mogul Nuernberg 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 Federal Mogul Nuernberg GmbH filed Critical Federal Mogul Nuernberg GmbH
Priority to PL13723434T priority Critical patent/PL2841223T3/pl
Publication of EP2841223A2 publication Critical patent/EP2841223A2/fr
Application granted granted Critical
Publication of EP2841223B1 publication Critical patent/EP2841223B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
    • B22D27/08—Shaking, vibrating, or turning of moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D15/00—Casting using a mould or core of which a part significant to the process is of high thermal conductivity, e.g. chill casting; Moulds or accessories specially adapted therefor
    • B22D15/02—Casting using a mould or core of which a part significant to the process is of high thermal conductivity, e.g. chill casting; Moulds or accessories specially adapted therefor of cylinders, pistons, bearing shells or like thin-walled objects
    • 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
    • B22D19/0027—Cylinders, pistons pistons

Definitions

  • the invention relates to a method for casting a piston for an internal combustion engine, as well as an associated use of a casting tool.
  • Vorbe angles For the standing casting are known as Vorbe anglessussinot machines, which make it possible to pour in a tilted up to 30 degrees from the vertical state.
  • the CH 135526 A relates to a method and a mold for casting composite blocks, in which during casting the angular position of the mold is changed.
  • the tool cavity defining tooling sections are rotated or tilted at least 45 degrees about a horizontal axis so that the axis of rotation of the piston to be cast moves in the vertical direction this preferably at least approximates.
  • the basic idea of the invention thus consists essentially in filling the casting cavity in a largely "lying" position of the casting cavity. This offers particularly favorable filling conditions, since comparatively thin regions, such as, for example, the remaining wall thickness between a later cooling channel of a piston and a ring carrier can be filled better than in the standing casting method.
  • foreign substances that are defects in the cast component, such as oxides or almin residues, when filling in the lying state are advantageously conducted into regions of the workpiece which can later be removed with little effort or have to be processed anyway and thus removed.
  • the invention makes use of the advantages of the upright casting method insofar as the feeding behavior is better here. This is essentially due to the fact that a largely rotationally symmetrical component is cast, whose G confusehohlraum is filled in the horizontal casting with a single-sided feeder. In the tilting according to the invention in the direction of the stationary casting method, the cheaper, largely symmetrical feeding behavior of a central feeder is used. In particular, the improved feed is expected to reduce the porosity in the molded component.
  • the casting cavity is tilted as a whole, so that the axis of rotation of the component to be cast, as described, changes its orientation.
  • the known in the prior art devices and methods in which individual tool sections adjacent to the casting cavity, but not define this total, are pivotable, are so far not comparable with the inventive approach.
  • the tool can be referred to as a mold.
  • the tilting movement in other words, the position of the axis of rotation of the component during filling, and / or the tilt angle and / or the Location of the axis of rotation of the component during solidification are adjustable.
  • the tilt angle By a flexible adjustment of the tilt angle, the filling behavior and / or the solidification behavior can be influenced in an advantageous manner.
  • the axis of rotation of the piston to be cast be largely aligned horizontally during filling.
  • the liquid material is filled at a lateral region of the piston to be cast.
  • the mold cavity has at least one recess which is located in an upright casting manner in an upper, preferably at the highest region of the mold cavity. This forms in this area after the complete filling a kind of dirt bag, in which any impurities were flushed.
  • the advantages of the upright casting method can be used particularly extensively by arranging a feeder after tilting the casting cavity in an upper region, in particular at a location other than the sprue.
  • the method according to the invention unfolds its advantages in a particular way when the component to be cast is cast with at least one insert, such as a ring carrier and / or a core for a cooling channel of a piston for an internal combustion engine.
  • at least one insert such as a ring carrier and / or a core for a cooling channel of a piston for an internal combustion engine.
  • the figure shows schematically the procedure according to the invention in the casting of a piston for an internal combustion engine.
  • the feeder is located on one side of the workpiece, after filling, and for solidifying the workpiece but at the highest point of the workpiece.
  • the reference numeral 14 denotes a sprue which is located laterally in the filling of the casting cavity, as shown in the figure "in front of" the mold cavity.
  • the gate 14 is preferably provided at a location other than the feeder 16, and preferably separately therefrom.
  • a recess 18 is preferably provided in the mold cavity which forms a kind of dirt pocket to which impurities are flushed. Here they can be easily removed during subsequent processing.
  • the recess 18 may be provided at an arbitrary position along the axis of rotation A of the piston 10.
  • the symmetry of the piston 10 to be generated in the course of the solidification process is utilized in that the mold cavity defining the later piston, as shown in the right-hand area of the figure, is tilted after filling of the molten material in such a way that the axis of rotation of the component to be produced is substantially perpendicular is aligned.
  • the feeder 16 is in an upper region in this state. In this orientation, it is to be expected for the solidification conditions that they lead to advantageous properties on the component produced.
  • this floor area can be provided by the procedure according to the invention as a finished cast floor area with corresponding contours that can no longer be reworked.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Claims (12)

  1. Procédé pour couler un piston (10) destiné à un moteur à combustion interne, dans lequel les parties d'outil définissant la cavité de coulée sont basculées, après le remplissage et avant la solidification, d'au moins 45 degrés autour d'un axe horizontal de telle sorte que l'axe de rotation (A) de la pièce (10) se déplace en direction de la verticale.
  2. Procédé selon la revendication 1, caractérisé en ce qu'un angle de basculement est réglable.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que l'axe de rotation (A) du piston (10) est orienté largement horizontalement lors du remplissage.
  4. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que l'axe de rotation (A) du piston (10) est orienté largement verticalement lors de la solidification.
  5. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que le matériau de coulée est versé au niveau d'une zone latérale du piston (10).
  6. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce qu'une masselotte (16) est agencée après le basculement des parties d'outil dans une zone supérieure du piston (10).
  7. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce qu'au moins une pièce d'insertion, par exemple un noyau pour un canal de refroidissement et/ou un support annulaire, est noyée dans le piston (10).
  8. Utilisation d'un outil de coulée pour couler un piston (10) destiné à un moteur à combustion interne, dans lequel les parties d'outil définissant la cavité de coulée peuvent être basculées, après le remplissage et avant la solidification, d'au moins 45 degrés autour d'un axe horizontal de telle sorte que l'axe de rotation (A) du piston (10) se déplace en direction de la verticale, dans un procédé selon l'une quelconque des revendications 1 à 7.
  9. Utilisation selon la revendication 8, caractérisée en ce qu'un angle de basculement est réglable.
  10. Utilisation selon la revendication 8 ou 9, caractérisée en ce qu'une masselotte est agencée au niveau d'une zone située le long de l'axe de rotation (A) du piston (10) à l'extrémité du piston (10).
  11. Utilisation selon l'une quelconque des revendications 8 à 10, caractérisée en ce que les parties d'outil définissant la cavité de coulée peuvent être basculées de telle sorte qu'une masselotte (16) est agencée dans une zone supérieure après le basculement.
  12. Utilisation selon l'une quelconque des revendications 8 à 11, caractérisée en ce que la cavité de moulage présente au moins un évidement (18) qui se trouve, pour une orientation horizontale de l'axe de rotation du piston (10) à couler, dans une zone supérieure, de préférence au point le plus haut.
EP13723434.0A 2012-04-27 2013-04-26 Procédé et outil de coulée Not-in-force EP2841223B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL13723434T PL2841223T3 (pl) 2012-04-27 2013-04-26 Sposób odlewania oraz narzędzie odlewnicze

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201210207090 DE102012207090A1 (de) 2012-04-27 2012-04-27 Gießverfahren und -werkzeug
PCT/EP2013/058725 WO2013160447A2 (fr) 2012-04-27 2013-04-26 Procédé et outil de coulée

Publications (2)

Publication Number Publication Date
EP2841223A2 EP2841223A2 (fr) 2015-03-04
EP2841223B1 true EP2841223B1 (fr) 2018-05-30

Family

ID=48463939

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13723434.0A Not-in-force EP2841223B1 (fr) 2012-04-27 2013-04-26 Procédé et outil de coulée

Country Status (11)

Country Link
US (1) US20150122448A1 (fr)
EP (1) EP2841223B1 (fr)
CN (1) CN104271288B (fr)
BR (1) BR112014026793B1 (fr)
DE (1) DE102012207090A1 (fr)
ES (1) ES2678621T3 (fr)
HU (1) HUE037819T2 (fr)
IN (1) IN2014KN02342A (fr)
MX (1) MX364761B (fr)
PL (1) PL2841223T3 (fr)
WO (1) WO2013160447A2 (fr)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH135526A (de) * 1928-01-27 1929-09-30 Limited Aluminium Verfahren und Form zum Giessen von Verbundblöcken.
US1993439A (en) * 1933-05-31 1935-03-05 Sterling Corp Molding machine
US2195960A (en) * 1934-08-15 1940-04-02 Morris Engineering Corp Apparatus for casting metal
US2620530A (en) * 1945-02-07 1952-12-09 United Engine & Machine Co Manufacture of pistons
CN85105357A (zh) * 1985-07-09 1987-09-09 洛阳工学院 用于旋转浇注活塞的金属型
DE10019309C2 (de) * 2000-04-19 2002-04-18 Vaw Mandl & Berger Gmbh Linz Verfahren und Vorrichtung zum Rotationsgießen
JP2002316253A (ja) * 2001-04-19 2002-10-29 Taiheiyo Cement Corp 金属−セラミックス複合材料の傾動鋳込み方法
DE102006058145A1 (de) * 2006-12-09 2008-06-12 Ksm Castings Gmbh Verfahren zum Verarbeiten, insbesondere Gießen, eines Materials, Gießform zur Durchführung des Verfahrens und nach dem Verfahren bzw. in der Gießform hergestellte Gegenstände
US8727967B2 (en) * 2008-07-18 2014-05-20 Boston Scientific Scimed, Inc. Endoscope with guide
RU2480309C2 (ru) * 2008-11-24 2013-04-27 Немак Диллинген Гмбх Способ литья отливки из расплавленного металла
JP4889783B2 (ja) * 2009-11-17 2012-03-07 日信工業株式会社 重力鋳造方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
BR112014026793B1 (pt) 2020-01-14
CN104271288A (zh) 2015-01-07
CN104271288B (zh) 2016-10-19
MX2014013032A (es) 2015-02-04
IN2014KN02342A (fr) 2015-05-01
MX364761B (es) 2019-05-06
BR112014026793A2 (pt) 2017-06-27
WO2013160447A3 (fr) 2014-02-27
EP2841223A2 (fr) 2015-03-04
DE102012207090A1 (de) 2013-10-31
HUE037819T2 (hu) 2018-09-28
US20150122448A1 (en) 2015-05-07
PL2841223T3 (pl) 2018-09-28
WO2013160447A2 (fr) 2013-10-31
ES2678621T3 (es) 2018-08-14

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