EP2552626A1 - Procédé et dispositif pour couler un piston destiné à un moteur à combustion interne - Google Patents

Procédé et dispositif pour couler un piston destiné à un moteur à combustion interne

Info

Publication number
EP2552626A1
EP2552626A1 EP11710777A EP11710777A EP2552626A1 EP 2552626 A1 EP2552626 A1 EP 2552626A1 EP 11710777 A EP11710777 A EP 11710777A EP 11710777 A EP11710777 A EP 11710777A EP 2552626 A1 EP2552626 A1 EP 2552626A1
Authority
EP
European Patent Office
Prior art keywords
piston pin
piston
core
sleeve
area
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Withdrawn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
EP11710777A
Other languages
German (de)
English (en)
Inventor
Isabella Sobota
Robert Sellner
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
Publication of EP2552626A1 publication Critical patent/EP2552626A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D25/00—Special casting characterised by the nature of the product
    • B22D25/02—Special casting characterised by the nature of the product by its peculiarity of shape; of works of art
    • 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
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
    • B22D17/2218—Cooling or heating equipment for dies
    • 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
    • B22D27/04—Influencing the temperature of the metal, e.g. by heating or cooling the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D29/00—Removing castings from moulds, not restricted to casting processes covered by a single main group; Removing cores; Handling ingots
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D30/00—Cooling castings, not restricted to casting processes covered by a single main group

Definitions

  • the invention relates to a method and a device casting a piston for an internal combustion engine.
  • the strength of the said piston pin bores, in which the piston pin is received for connection to a connecting rod is of particular importance.
  • the required strength can be achieved in particular by rapid quenching of the casting. According to the current procedure, such quenching takes place only outside the mold, when the entire piston is solidified so far that it can be removed from the so-called mold.
  • the invention has for its object to provide a method and apparatus for casting of pistons for
  • At least one sleeve provided there is already retracted after an edge-layer solidification in the region of at least one piston pin bore, and this region is cooled. This allows the range of
  • piston pin bore Essentially around a substantially cylindrical or slightly conical casting core, which keeps the space later provided for the piston pin in a sense, and thus around which thus the material surrounding the later piston pin bore is formed.
  • the notion of the piston pin bore is to emphasize that this need not necessarily be formed by drilling as a procedural approach. Rather, it is usually two substantially cylindrical openings in which the two ends of a piston pin are received, while therebetween in the installed state, the connecting rod.
  • the material bypassing the piston pin bores can thus be cooled and quenched more quickly by the procedure according to the invention than was hitherto possible, so that a faster and directional solidification is possible, which leads to increased strength.
  • the solidification speed of the piston material is increased, in particular in the area of the piston pin bores, which leads to quenching and increased strength.
  • a directional solidification can be generated.
  • a coolant to be supplied, in particular compressed air, to be supplied by at least one core provided between the piston pin bores and / or at least one sleeve.
  • a core or a quill has sufficient space for the provision of even with small piston types
  • Compressed air lines and nozzles or openings Compressed air lines and nozzles or openings.
  • the core can advantageously ever
  • the core Preference is given to the core at least one, preferably on both sides, two openings, in particular in the form of holes
  • the beginning of the coolant supply can be triggered by the fact that the above-mentioned outlet openings are released by the withdrawal of the respective quill.
  • Piston pin holes through the core, preferably in
  • coolant in particular compressed air
  • the core is not retracted, and the material applied to this core until the core is retracted is cooled to realize increased strength also here.
  • coolant can be supplied simultaneously via the core and at least one quill.
  • the cooling of the core space ie the area which rests against the core until it is withdrawn, takes place in that cooling center is supplied only through a quill.
  • the cooling to a reduced extent can thus be done by the supply of coolant, in particular compressed air by exactly one quill.
  • Device according to the invention correspond to the method features described above.
  • Fig. 1 is a schematic sectional view of a
  • Fig. 2 is a schematic sectional view according to the
  • Fig. 3 is a schematic sectional view when supplying
  • Fig. 4 is a schematic sectional view according to the
  • the casting device 20 for a piston 10 shown schematically in section in FIG. 1 has various elements which initially define the outer shape of the piston. This applies to the tool part 22 in the region of the piston crown, the
  • Embodiment two sleeves 14 provided which are slightly conical. Furthermore, to keep clear of Region between the piston pin bores 14 for the subsequent inclusion of the connecting rod, a core 16 is present, which extends into the region above the pin holes 12, and against which the sleeves. After the material for the piston 10 has been filled in liquid form into the casting device 20 designed in this way, a solidification of the material occurs, starting from the edge layers.
  • Piston pin holes 12 takes place, at least one sleeve 14, in the embodiment shown, both sleeves 14, retracted to expose the region of the piston pin holes 12 in particular on the inside thereof.
  • this is realized in the illustrated embodiment by the supply of compressed air through the tool core 16.
  • this has a central inflow channel 28 and two side channels 30 extending therefrom, so that
  • Piston pin holes which previously applied to the core 16, expose and cause cooling and deterrence here, even before the piston out of the total
  • Casting device or mold can be removed from the mold.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Abstract

Selon un procédé pour couler un piston destiné à un moteur à combustion interne, après la solidification d'une couche de bord située dans la zone des alésages (12) d'axe de piston, au moins une douille située dans cette zone est retirée et la zone d'au moins un alésage (12) est refroidie. Un dispositif pour couler un piston destiné à des moteurs à combustion interne comporte au moins une douille qui peut être retirée de la zone d'un alésage (12) d'axe de piston, et un dispositif servant à refroidir la zone des alésage (12).
EP11710777A 2010-03-26 2011-03-24 Procédé et dispositif pour couler un piston destiné à un moteur à combustion interne Withdrawn EP2552626A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201010003345 DE102010003345B4 (de) 2010-03-26 2010-03-26 Verfahren und Vorrichtung zum Gießen eines Kolbens für einen Verbrennungsmotor
PCT/EP2011/054531 WO2011117343A1 (fr) 2010-03-26 2011-03-24 Procédé et dispositif pour couler un piston destiné à un moteur à combustion interne

Publications (1)

Publication Number Publication Date
EP2552626A1 true EP2552626A1 (fr) 2013-02-06

Family

ID=43903907

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11710777A Withdrawn EP2552626A1 (fr) 2010-03-26 2011-03-24 Procédé et dispositif pour couler un piston destiné à un moteur à combustion interne

Country Status (4)

Country Link
US (1) US8887794B2 (fr)
EP (1) EP2552626A1 (fr)
DE (1) DE102010003345B4 (fr)
WO (1) WO2011117343A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2527060A1 (fr) * 2011-05-24 2012-11-28 Georg Fischer Automobilguss GmbH Procédé de coulée pour moules permanents
CN105665683B (zh) * 2016-03-24 2017-09-29 中国北方发动机研究所(天津) 一种局部高强化冷却的活塞浇铸装置
CN111036878A (zh) * 2019-12-23 2020-04-21 王俊华 一种轮毂浇铸成型设备及其加工工艺

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE532267C (de) * 1929-03-29 1931-08-26 Theodor Rudolf Pawlikowski Verfahren und Vorrichtung zur Herstellung von Zylinderseelen und Kolben
NL7607080A (nl) * 1976-06-28 1977-12-30 Holec Nv Inrichting voor het afgeven van brandstof aan een verbrandingsmotor.
DE3040125A1 (de) * 1980-10-24 1982-05-27 Audi Nsu Auto Union Ag, 7107 Neckarsulm Kolben fuer hubkolbenmaschinen sowie verfahren zur herstellung des kolbens
SE452960B (sv) * 1985-06-17 1988-01-04 Mogilevskij Otdel Fiz T I Forfarande for framstellning av helgjutna gjutstycken av gjutjern och kokillmaskin for genomforande av forfarandet
GB8518909D0 (en) * 1985-07-26 1985-09-04 Ae Plc Engineering components
GB9027466D0 (en) * 1990-12-19 1991-02-06 T & N Technology Ltd Method and apparatus for casting articles
JP2001276961A (ja) * 2000-03-30 2001-10-09 Mazda Motor Corp 金属多孔予備成形体及び該成形体を用いた金属複合部材の製造方法
DE102005027540A1 (de) 2005-06-15 2006-12-28 Ks Kolbenschmidt Gmbh Verkürzung der Taktzeit bei der Serienherstellung von Kolben für Brennkraftmaschinen
DE102008048761B4 (de) * 2008-09-24 2019-03-28 Volkswagen Ag Verfahren zum Gießen eines Gusskörpers, insbesondere Zylinderkurbelgehäuses und Gießvorrichtung zur Durchführung des Verfahrens
DE102010003346A1 (de) * 2010-03-26 2011-09-29 Federal-Mogul Nürnberg GmbH Verfahren und Vorrichtung zum Gießen eines Kolbens für einen Verbrennungsmotor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2011117343A1 *

Also Published As

Publication number Publication date
US20130092342A1 (en) 2013-04-18
WO2011117343A1 (fr) 2011-09-29
DE102010003345A1 (de) 2011-09-29
US8887794B2 (en) 2014-11-18
DE102010003345B4 (de) 2012-02-23

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