EP2945760A1 - Procédé et moule permettant d'obtenir des pièces en fonte, en particulier des blocs-cylindres et des culasses, avec raccordement fonctionnel de la masselotte - Google Patents

Procédé et moule permettant d'obtenir des pièces en fonte, en particulier des blocs-cylindres et des culasses, avec raccordement fonctionnel de la masselotte

Info

Publication number
EP2945760A1
EP2945760A1 EP14700923.7A EP14700923A EP2945760A1 EP 2945760 A1 EP2945760 A1 EP 2945760A1 EP 14700923 A EP14700923 A EP 14700923A EP 2945760 A1 EP2945760 A1 EP 2945760A1
Authority
EP
European Patent Office
Prior art keywords
casting
mold
feeder
cast
mold cavity
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.)
Granted
Application number
EP14700923.7A
Other languages
German (de)
English (en)
Other versions
EP2945760B1 (fr
Inventor
Henning Meishner
Alexander Wagner
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.)
Nemak Wernigerode GmbH
Original Assignee
Nemak Wernigerode 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 Nemak Wernigerode GmbH filed Critical Nemak Wernigerode GmbH
Priority to PL14700923T priority Critical patent/PL2945760T3/pl
Publication of EP2945760A1 publication Critical patent/EP2945760A1/fr
Application granted granted Critical
Publication of EP2945760B1 publication Critical patent/EP2945760B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
    • B22C9/082—Sprues, pouring cups
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
    • B22C9/088—Feeder heads
    • 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
    • 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
    • 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
    • B22D35/00—Equipment for conveying molten metal into beds or moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/02—Sand moulds or like moulds for shaped castings

Definitions

  • the invention relates to a method for casting
  • Casting in which a molten metal is poured through a feeder or separate runners or pouring channels into a mold cavity defining the casting, which mold comprises moldings defining the shape of the casting to be cast.
  • the invention relates to a casting mold for producing castings from a molten metal, wherein the casting mold defines a mold cavity and moldings, which determine the shape of the casting to be cast, as well as a feeder or separate runners or pouring channels, via which the melt in casting enters the mold cavity.
  • Mold according to the invention specially designed for the casting of castings by gravity casting.
  • the object of the invention was to specify a casting method and a casting mold which, even under the conditions explained above, the production of functionally correct and defect-free cast parts
  • the invention is based on the idea, for the production of castings, the feeder or runner or pouring channel, via which the melt is poured into the mold to bind functionally to the mold cavity of the mold.
  • the connection of the feeder takes place according to the invention
  • connection extends in particular over several levels of the component to be cast.
  • a molten metal is thus poured off in a manner known per se via a feeder or separate runners or pouring channels into a mold cavity bounded by a casting mold and imaging the casting.
  • the casting mold comprises molded parts which determine the shape of the casting to be cast.
  • the melt is now formed via at least two connections, at least one of which is formed as an additional channel leading through one of the molded parts and independent of the contour of the casting to be cast, in at least two regions
  • a mold according to the invention for producing castings from a molten metal defines a mold cavity and has moldings which conform to the shape of the mold
  • the feeder or the runners or pouring channels are connected by at least two connections, of which at least one
  • Tailored mold cavity which are assigned to different levels of the component to be cast.
  • the mold according to the invention can thus enter the melt in the usual way from the feeder or from the respectively provided runners or pouring channels in a conventional manner via channels into the casting mold, which form part of this casting in the finished casting.
  • the molten metal may be at least one more
  • independent channel is guided by one of those moldings that determine the contour of the casting.
  • Constant moldings are understood to mean all parts of the mold by which the shape of the casting is determined. These include in particular
  • Casting cores which are inserted into the casting mold to image on or in the casting recesses, cavities and the like.
  • the mold may be a sand mold or a permanent mold.
  • the mold comprises a feeder, this feeder having the volume required to feed the mold
  • the feeder may be formed in a so-called “feeder core" which is placed on or at the casting mold or integrated into the casting mold.
  • the feeder core may be designed not only to compensate for shrinkage
  • the feeder core is formed so that it closes the mold during solidification upwards.
  • the invention thus provides a method and mold for making castings wherein the casting mold cavity of the mold is filled with liquid metal, wherein in the mold cavity
  • Moldings are inserted, which reflect the later component geometry.
  • the invention is particularly suitable for gravity casting, including all conventional and
  • the invention is not only suitable for everyone
  • Casting solidification is thus usually done under gravity conditions.
  • the feeder is typically seated on the upper side of the mold seen in the direction of gravity.
  • the casting mold can have one or more regions in which the
  • Solidification speed compared to other areas or sections of the mold should be significantly accelerated.
  • the accelerated cooling can be done in a conventional manner by heat sink, often referred to as “cooling iron” or “cooling molds”, which are used in the mold and a locally limited increase in
  • the feeder is seen in the solidification direction, i. seen in the direction in which the
  • Feeding channels are guided by the contour-forming moldings. However, it is also conceivable to guide the feeder connections or feed channels through other moldings of the casting mold. Thus, corresponding channels can also be guided through the outer parts of the casting mold in order to selectively supply melt to specific zones of the mold cavity in which the casting is imaged.
  • Feeder channel or the respective feeder connection to be provided a wall which has a reduced thermal conductivity and thus thermally insulated the heat sink against the feed channels.
  • the wall may consist of molding sand, from which the respective contour-forming molded part is formed.
  • Feeder connections or channels be performed so that
  • Production of the invention is particularly suitable include cylinder heads and cylinder blocks for internal combustion engines. - -
  • the invention ensures the production of faultless cast components, making them especially for casting cylinder blocks in compliance with very high standards
  • Strengths in the area of the main bearings and in the area of the cylinder web is suitable.
  • Fig. 1 shows a first mold in a vertical section
  • Fig. 2 shows a second mold in a vertical section.
  • the feeder core 1 which acts as a gravity feeder, respectively forms the upper end of the respective casting mold G1, G2.
  • the feeder core 1 surrounds a feeder 2, via which the filling of the mold
  • each surrounded mold cavity 3 takes place with melt.
  • the filling of the mold G1, G2 can also be done in a conventional manner via separate runners and pouring channels.
  • Contouring mold parts 4a, 4b, 4c are provided in the mold G1, G2.
  • the casting mold G1 has a contour-forming molded part 5 and the casting mold G2
  • the mold parts 4a-4c and 5 and 6 are each formed in a manner known per se as casting cores and formed from molding sand. They are in the of the respective outer moldings Set 7 of the molds Gl, G2 bounded mold cavity 3 and form in the casting to be cast recesses, cavities and channels. Accordingly, the mold parts 4a-4c and 5,6 are destroyed in the coring of the mold G1, G2. While the mold parts 4a-4c and 5,6, the inner contour of the
  • the moldings 5,6 are within the respective
  • Mold cavity 3 positioned so that they border with their upper side to the respective feeder core 1 and
  • Mold G1, G2 are arranged.
  • the mold parts 5,6 delimit in this way within the mold cavity 3, two lateral regions 8,9 from each other, for example, the
  • the present in the feeder 2 melt on the respective molded part 5,6 is on.
  • the feeder 2 will have in the usual way a, indicated in Fig. 1 by a dashed line own ground in the
  • Section K1, K2 thus solidifies faster than the melt, which is present in the direction of gravity S above and below these sections K1, K2.
  • a feeder channel 16 formed in the vertical direction of the feeder 2 associated Top of the molding 5 to the lower portion 10 of the mold cavity 3 associated underside extends.
  • the feeder channel 16 opens directly in the feeder 2. Unless the above-mentioned, here indicated only by a dashed line in Fig. 1, practical embodiment is selected, in which the feeder 2 has its own ground, is
  • Casting mold Gl thus not only on the side portions 8,9 to the section 10 of the mold cavity 3, but also on the feeder channel 16 in the molded part 5. In this way, the flowing through the feeder channel 16 melt bypasses the critical sections K1, K2 and then even a continuous supply of the section 10 with melt safe, if in the sections K1, K2 already melt solidifies and the flow is obstructed there.
  • associated side surfaces of the molding 6 also each have a heat sink 17,18.
  • the heat sinks 17, 18 are arranged offset in the direction of the top side of the molded part 6, so that a narrow section 19, 20 of the lateral regions 8, 9 is still present underneath them bottom portion 10 of the mold cavity 3 of the mold G2 opens.
  • the Regions 8,9 associated side surfaces of the outer moldings of the mold G2 each have a further heat sink 21,22.
  • Sections Kl ', K2' is present.
  • a feed channel 23 is formed in the mold part 6 in the mold G 2 who is in an upper
  • Branching point extends, at which he branches into interchangeable branches 24,25.
  • each of the branches 24,25 molded over its own in the molded part 6
  • Feeder channel 23 to be connected to the feeder 2.
  • the branches 24,25 lead in the lateral direction to each one of the areas 8,9 respectively associated side surfaces of the molding 6.
  • the one branch 24 opens into the section 19 of the lateral region 8, while the branch 25 in the section 20 of the lateral region empties.
  • the existing below the critical sections Kl 'and K2 1 sections 19,20 can be supplied to the solidification of the melt present in them with melt.
  • the existing below the molding 6 lower portion 10 of Mold cavity 3 on this way, bypassing the
  • Mold G2 thus not only on the side portions 8,9 to the section 10 of the mold cavity 3, but also on the feeder channel 23 and its branches 24,25. In this way, a continuous supply of the sections 10, 19, 20 of the casting mold G 2 with melt is ensured, even if melt already solidifies in the sections K 1 ', 2 1 and the flow is hindered there.
  • Feeder channel 23 each have a wall 26,27 and 28,29
  • Moldings are made in the usual way 5.6 and one of the heat sinks 12,13,17,18 decreased
  • the invention thus makes it possible to reliably supply different regions and sections of the mold cavity with melt even within the mold, even if melt solidifies in other regions or out of others
  • melts in the connected to the feeder each upper and inner, via the respective feeder channel 16,23 connected to the feeder areas slower than slower in the sections Kl, K2 and Kl ', K2' existing melt are the melts in the connected to the feeder each upper and inner, via the respective feeder channel 16,23 connected to the feeder areas slower than slower in the sections Kl, K2 and Kl ', K2' existing melt.
  • upper and lower areas can be made possible, which solidify at the same time.
  • this embodiment of the invention allows the castings already in the partially solidified, ie not fully solidified state, to free from the outer moldings.
  • the component removal can therefore take place even in the doughy state of the feeder 2 in the invention.

Landscapes

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

Abstract

La présente invention concerne un procédé permettant le moulage de pièces en fonte. Selon ce procédé, un métal liquide est coulé au moyen d'une masselotte (2), ou de chenaux de coulée ou de canaux de coulée séparés, dans une cavité de moule (3) délimitée par un moule (G1, G2) et reproduisant la pièce en fonte. Le moule (G1, G2) comprend des parties (4-7) déterminant la forme de la pièce à mouler, et un moule (G1, G2). L'objet de l'invention est de permettre que le procédé de moulage et le moule garantissent, même dans les conditions préalables précédemment expliquées, la fabrication de pièces en fontes fonctionnelles et sans défaut. Cet objectif est atteint selon l'invention par le fait que le métal liquide est acheminé dans la cavité de moule (3) dans au moins deux segments (8, 9, 10, 19, 20), lesquels sont associés à différents plans de la pièce à mouler, en passant par au moins deux raccordements, parmi lesquels au moins l'un est réalisé sous la forme d'un canal (16, 23) supplémentaire, menant à travers une des parties de moule et indépendant du contour de la pièce à mouler.
EP14700923.7A 2013-01-18 2014-01-20 Moule permettant d'obtenir des pièces en fonte, en particulier des blocs-cylindres et des culasses, avec raccordement fonctionnel de la masselotte Active EP2945760B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL14700923T PL2945760T3 (pl) 2013-01-18 2014-01-20 Forma odlewnicza do wytwarzania części odlewanych, w szczególności bloków cylindrów i korpusów cylindrów, z funkcjonalnym połączeniem zasilacza

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013100540 2013-01-18
PCT/EP2014/051030 WO2014111573A1 (fr) 2013-01-18 2014-01-20 Procédé et moule permettant d'obtenir des pièces en fonte, en particulier des blocs-cylindres et des culasses, avec raccordement fonctionnel de la masselotte

Publications (2)

Publication Number Publication Date
EP2945760A1 true EP2945760A1 (fr) 2015-11-25
EP2945760B1 EP2945760B1 (fr) 2022-01-05

Family

ID=49998295

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14700923.7A Active EP2945760B1 (fr) 2013-01-18 2014-01-20 Moule permettant d'obtenir des pièces en fonte, en particulier des blocs-cylindres et des culasses, avec raccordement fonctionnel de la masselotte

Country Status (12)

Country Link
US (1) US10688555B2 (fr)
EP (1) EP2945760B1 (fr)
JP (1) JP6227671B2 (fr)
KR (1) KR101805853B1 (fr)
CN (1) CN104936721B (fr)
BR (1) BR112015017065B1 (fr)
HU (1) HUE057875T2 (fr)
MX (1) MX2015009203A (fr)
PL (1) PL2945760T3 (fr)
RU (1) RU2634819C2 (fr)
WO (1) WO2014111573A1 (fr)
ZA (1) ZA201505175B (fr)

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DE102014217438A1 (de) * 2014-09-01 2016-03-03 Volkswagen Aktiengesellschaft Gießform für das Schwerkraftgießen oder Niederdruckgießen von Leichtmetallen und damit ausführbares Kokillengießverfahren
DE102017100805A1 (de) 2017-01-17 2018-07-19 Nemak, S.A.B. De C.V. Gießform zum Gießen von komplex geformten Gussteilen und Verwendung einer solchen Gießform
DE102018128020B4 (de) 2018-11-09 2024-05-23 Bayerische Motoren Werke Aktiengesellschaft Kokille sowie Verfahren zum Herstellen eines Kurbelgehäuses
CN110202114A (zh) * 2019-07-22 2019-09-06 程郎 一种铝铸件压铸模具
US20210346945A1 (en) * 2020-05-08 2021-11-11 Hamilton Sundstrand Corporation Thermal management in lost wax casting
US11654476B2 (en) * 2020-09-28 2023-05-23 GM Global Technology Operations LLC Hybrid core for manufacturing of castings
LU502349B1 (de) 2022-06-24 2024-01-09 Nemak Sab De Cv Gießform zur Herstellung eines aus einer Leichtmetalllegierung gebildeten Gussteils
CN117505776B (zh) * 2024-01-05 2024-04-16 烟台冰轮智能机械科技有限公司 一种离心式压缩机底座铸造工艺

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Also Published As

Publication number Publication date
JP6227671B2 (ja) 2017-11-08
US10688555B2 (en) 2020-06-23
CN104936721B (zh) 2017-07-07
BR112015017065A2 (pt) 2017-07-11
PL2945760T3 (pl) 2022-05-09
HUE057875T2 (hu) 2022-06-28
KR101805853B1 (ko) 2017-12-07
KR20150105463A (ko) 2015-09-16
MX2015009203A (es) 2016-03-21
JP2016507381A (ja) 2016-03-10
RU2015134546A (ru) 2017-03-03
US20150352631A1 (en) 2015-12-10
ZA201505175B (en) 2016-07-27
RU2634819C2 (ru) 2017-11-03
WO2014111573A1 (fr) 2014-07-24
CN104936721A (zh) 2015-09-23
EP2945760B1 (fr) 2022-01-05
BR112015017065B1 (pt) 2019-07-09

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