EP0656819B1 - Verfahren und vorrichtung zum giessen von bauteilen - Google Patents

Verfahren und vorrichtung zum giessen von bauteilen Download PDF

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Publication number
EP0656819B1
EP0656819B1 EP94918839A EP94918839A EP0656819B1 EP 0656819 B1 EP0656819 B1 EP 0656819B1 EP 94918839 A EP94918839 A EP 94918839A EP 94918839 A EP94918839 A EP 94918839A EP 0656819 B1 EP0656819 B1 EP 0656819B1
Authority
EP
European Patent Office
Prior art keywords
casting
mould
melt
container
ingate
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
EP94918839A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0656819A1 (de
Inventor
Friedhelm Kahn
Joachim Kahn
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.)
Kahn Friedhelm Prof Dr-Ing
Original Assignee
Kahn Friedhelm Prof Dr-Ing
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Filing date
Publication date
Application filed by Kahn Friedhelm Prof Dr-Ing filed Critical Kahn Friedhelm Prof Dr-Ing
Priority to DE9421585U priority Critical patent/DE9421585U1/de
Publication of EP0656819A1 publication Critical patent/EP0656819A1/de
Application granted granted Critical
Publication of EP0656819B1 publication Critical patent/EP0656819B1/de
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
    • B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
    • B22D27/09—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting by using pressure
    • B22D27/13—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting by using pressure making use of gas pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D23/00—Casting processes not provided for in groups B22D1/00 - B22D21/00
    • B22D23/006—Casting by filling the mould through rotation of the mould together with a molten metal holding recipient, about a common axis
    • 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
    • B22D27/003—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting by using inert gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads

Definitions

  • the invention relates to a method and an apparatus for casting Components, made of metal alloys according to the tilting principle according to the respective Generic term of independent claims 1, 3 and 15.
  • the liquid material state is a variety of different processes and devices known that more or less resemble a high quality Workpiece requirements with regard to freedom of design, Surface quality and in particular optimal material properties to reach.
  • the main difficulties initially lie in the mold filling process, the initially compact melt volume divided and a large one Surface is exposed to the attack of the air atmosphere, which by appropriate Reactions lead to an impairment of the material quality.
  • Molten metal alloys, their Alloy components have a high reactivity with the oxygen, Have nitrogen and water vapor in the air. It became like this early on sensitive alloys, for example the Durville tipping process applied.
  • DE-PS 377 683 proposes a method in which an elongated Casting vessel numerous castings are made in succession.
  • the melt container is erected, which limits one higher metallostatic pressure can be achieved.
  • the Atmosphere free access to the melt, so that especially as it progresses easily drain oxide from the bath surface into the mold cavity can reach.
  • a direct remains during the solidification of the casting
  • DE-PS 505 224 describes a method in which on a similar one Swing arranged casting container two molds are mounted, which alternate be filled with melt. Here, too, the air has free access to the melt pool with a large surface, so that the impurities present here can easily get into the mold.
  • DE-PS 21 64 755 describes a high-performance casting process for large series, in which the disadvantages of the aforementioned proposals largely could be eliminated.
  • the solidification process in the casting mold usually occurs through volume contraction and gas excretion cavities and pores in the component structure must be combated with considerable effort.
  • the shrinking processes also locally lead to the formation of gaps between the cast wall and mold wall surfaces, which significantly affects the heat transfer, what also has negative repercussions on the structure quality and also Sink marks on the casting surface that make the component unusable do.
  • GB 2 080 714 A describes a method and an apparatus of the type described in the introduction.
  • the device comprises a Pouring canister, which during the implementation of the process of a mold cavity through a channel with an elongated constriction is separated, with at least the after tilting in oxide skin located in a feeder head is washed into the casting will be.
  • the mold filling controlled in the sense of throttling, whereby a layered mold filling is not possible.
  • the flow paths of the melt from the gate the channel with the constriction and the feeder head are in relation to the casting size very long and affect the Melt quality considerably due to reactions and temperature losses, which greatly reduces the mold filling and fluidity becomes.
  • the object of the present invention is, using novel methods and a new type of pouring device for high-quality component production to create necessary favorable conditions, both when filling the mold as well as during the solidification of the castings, at the same time a special one to enable rational manufacturing and thereby the disadvantages of the above Avoid procedures and devices. Turbulence and Distribution of the melt during mold filling can be avoided. After a Further tasks are the reactions of the alloy melt with the Gases of the atmosphere and the mold cavity are prevented. After a Another advanced task is preferably a sharp-contoured filling achieved and an optimally fine-grained and dense component structure during the Solidification process can be ensured.
  • the gate creates the direct connection between the casting container and the mold cavity and should be such that a throttling or Swirling of the melt when overflowing can be avoided. Its big Cross section based on the cross section of the cut mold cavity or the adjacent mold wall parts of the component can after a first Approach over 40%, especially over 50% of the latter cross-sectional areas be.
  • the large cross section related to the cross section of the cut mold cavity or the cross section of the adjacent mold wall parts extends according to the invention over essentially the entire length of the latter areas.
  • the gate communicates here each with the deepest parts of the mold cavity or the mold wall part before turning. Only their cross-sectional areas parallel to the gate cross-section are referred to as cut surfaces on which the relative dimensioning of the gate.
  • the process is peculiar to that for a casting process one corresponding to the gross volume of the melt quantity for a casting Quantity is poured into the casting tank during the casting process completely solidified, with only a small volume fraction of the melt, the the feeder volume forms, in the gate itself or, if necessary, in small quantities remains in the casting tank.
  • a quantity corresponding to the melting quantity becomes fixed metal volume introduced into the casting tank, first then the sealing connection between the casting container and the casting mold and the interior was purged with protective gas, whereupon the melt quantum is melted for a cast in the casting container. Otherwise runs the procedure unchanged. Here, too, the oxidation processes liquid phase effectively avoided.
  • an increase in pressure of the protective gas is carried out during made of the solidification process, whereby the feed volume and thus the Use of metal can be reduced because of the overpressure on the melt level the otherwise usual metallostatic pressure of high-reaching feeders replaced.
  • the risk of contamination and the inclusions in the casting excluded in that Comparison to the adjacent component surface or the cut part of the mold cavity, a large gate cross section is provided, or that a compared to the size of the casting or the mold cavity in the direction of Long gating axis of rotation is provided. This results in a calm overflow, preferably completely under the bath level from the casting container into the casting mold, so that a faultless casting is created.
  • the gate with a large cross-section is with the pouring channel or barrel identical and at the same time represents the volume of feeder. It forms the immediate one Connection between the interior of the casting container and the mold cavity.
  • the mold cavity for an elongated component is aligned in the direction of the axis of rotation. This enables a wide melt front to be represented.
  • Another design is that the cores lie towards the casting container are arranged. As a result, the cut mold wall parts themselves reduced to end wall parts of the component to improve the quality.
  • the solidification should be carried out in a known manner, if necessary by heating and / or Cooling can be controlled so that it is the most distant from the casting tank Position of the component progresses towards the gate.
  • a further overflow channel becomes parallel intended for gate, so that initially a gas or air volume compensation can take place to avoid foaming.
  • an increased, in particular variable, protective gas pressure during the solidification very special advantages.
  • a strong increase in gas pressure mainly due to the melt level at the end of the mold filling acts below which the feed volume of the casting is, can Appropriate increase of the feed pressure is achieved and thus a substantial Sealing feed of the cast structure can be forced.
  • a vigorously pressing the cast part surfaces against the mold walls and through Prevention of the harmful gap formation an increased heat transfer causes.
  • Improvements can also be made in the use of inert gas.
  • the application A protective gas pump not only allows the application of several bar pressure, it also allows for a subsequent pressure reduction Recovery of the protective gas. This way the losses stay up unavoidable leakage is limited.
  • the proposed methods offer ideal conditions for use in a casting cell sealed off from the outside world reliable prevention of foundry emissions.
  • a casting mold 31 (mold) is with a mold cavity 1 through a mold cover plate 2, side parts 3, Cores 4 and a mold base plate 5 are formed.
  • a casting container 30 with a housing 6 and one Refractory lining 7, which is a melt quantum 8 metered for a casting contains.
  • the melt quantum 8 is with the help of a not shown Dosing furnace in particular through the filling opening 9 with the closure 10 open filled under protective gas; then the shutter 10 is closed.
  • a protective gas connection 11 is shown on the closure 10.
  • the horizontal is in the direction of the longitudinal extent of Casting mold 31 and casting container 30 extending axis of rotation 12 of the casting device shown.
  • As an opening within the mold base plate 5 is a Bleed 13 formed with a large cross section.
  • An arrow above the mold cover plate 2 symbolizes the direction of movement the same for demolding the finished component.
  • the mold 31 with the mold cavity 1 can also be seen in FIG. 2, those from the mold cover plate 2, side parts 3, cores 4 and the mold base plate 5 exists.
  • the base plate 5 In the base plate 5 are the gate 13 and a parallel further overflow channel 14 can be seen.
  • the housing 6 On the casting container 30 is the housing 6, the refractory lining 7 and the contained therein for a casting metered melt quantum 8 recognizable.
  • FIG. 3 shows a rotatable casting device 19 with a rotary drive 27 and a casting container 30 and a casting mold 31 connecting them Bracing means 32 shown within a casting cell 21.
  • the axis of rotation 12 the pouring device is also shown.
  • the casting container 30 is over a line 26 with a pump and storage system shown only symbolically 18, 28 connected.
  • a metering furnace is located within the casting cell 21 15, which has an elastic gas-tight coupling 23 with the filling opening 9 of the casting container 30 is connected.
  • the metering oven 15 is a Lock 22 connected to an area outside the casting cell 21.
  • To the Lock 22 can alternatively be a charging device 16 for lumpy Feed material or a charging device 17 for liquid feed material connect.
  • the casting cell comprises a further lock 22. Above the mold 31, a manipulator 20 for cores can be seen.
  • FIG. 4 shows a casting device consisting of a casting container 30 and a mold 31 shown.
  • the casting container 30 differs from that shown in FIG. 1 in that that it has no fill opening. However, it points within the refractory layer 7 means for heating 24.
  • a solid metal quatum 25 is in the Casting container 30 used. Corresponds in cross section perpendicular to the axis of rotation 12 this pouring device shown in Figure 2.
  • the casting mold 31 essentially corresponds to that shown in FIG. 1. It comprises a mold cover plate 2, mold side parts 3 and one Mold base plate 5. However, means 29 for cooling are in the side parts shown. Cores 4 are used in the mold. The axis of rotation of the device is designated 12.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Processing Of Solid Wastes (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Dental Prosthetics (AREA)
  • Investigating And Analyzing Materials By Characteristic Methods (AREA)
  • Continuous Casting (AREA)
  • Mold Materials And Core Materials (AREA)
EP94918839A 1993-06-02 1994-06-03 Verfahren und vorrichtung zum giessen von bauteilen Expired - Lifetime EP0656819B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE9421585U DE9421585U1 (de) 1993-06-02 1994-06-03 Vorrichtung zum Gießen von Bauteilen

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4318252A DE4318252A1 (de) 1993-06-02 1993-06-02 Verfahren und Vorrichtung zum Giessen von Bauteilen
DE4318252 1993-06-02
PCT/EP1994/001813 WO1994029050A2 (de) 1993-06-02 1994-06-03 Verfahren und vorrichtung zum giessen von bauteilen

Publications (2)

Publication Number Publication Date
EP0656819A1 EP0656819A1 (de) 1995-06-14
EP0656819B1 true EP0656819B1 (de) 1999-03-10

Family

ID=6489414

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94918839A Expired - Lifetime EP0656819B1 (de) 1993-06-02 1994-06-03 Verfahren und vorrichtung zum giessen von bauteilen

Country Status (9)

Country Link
US (1) US5626180A (hu)
EP (1) EP0656819B1 (hu)
JP (1) JP2952523B2 (hu)
AT (1) ATE177354T1 (hu)
CZ (1) CZ290291B6 (hu)
DE (2) DE4318252A1 (hu)
ES (1) ES2131199T3 (hu)
HU (1) HU217381B (hu)
WO (1) WO1994029050A2 (hu)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10019309A1 (de) * 2000-04-19 2001-10-31 Vaw Mandl & Berger Gmbh Linz Verfahren und Vorrichtung zum Rotationsgießen
DE102016220240A1 (de) 2015-10-15 2017-04-20 Volkswagen Aktiengesellschaft Rotationsgießverfahren

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19647713C2 (de) * 1996-11-11 2000-01-05 Strikfeldt & Koch Vorrichtung zur Erfassung eines Pegels von flüssigem Metall
US6263951B1 (en) 1999-04-28 2001-07-24 Howmet Research Corporation Horizontal rotating directional solidification
TWI386262B (zh) * 2004-09-01 2013-02-21 Commw Scient Ind Res Org 合金鑄造裝置
US10933467B2 (en) * 2014-03-28 2021-03-02 Inductotherm Corp. Clean cell environment roll-over electric induction casting furnace system
CN110125344B (zh) * 2019-06-12 2024-08-23 陕西三毅有岩材料科技有限公司 一种铸造难熔金属的方法及难熔金属锭

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE377683C (de) * 1923-06-23 Schmidt Karl Verfahren zum Giessen von Metallen
DE505224C (de) * 1929-11-18 1930-08-15 Frank Stuhl Vorrichtung zum Giessen von Roheisen unter Druck
US2233405A (en) * 1938-12-27 1941-03-04 Permold Co Method of and apparatus for casting cylinder heads
FR879762A (fr) * 1942-02-27 1943-03-04 Procédé pour la coulée de pièces métalliques dans des moules en sable
FR996838A (fr) * 1949-08-25 1951-12-27 Procédé et dispositif pour la coulée dans le vide de pièces d'acier magnétique,en particulier de carcasses pour moteurs électriques; de tôles pour transformateurs, etc.
FR1083506A (fr) * 1953-04-29 1955-01-10 Fonderie Tech De Vitry Sur Sei Perfectionnements aux moules de coulée de pièces en alliages spéciaux
FR1304944A (fr) * 1961-11-03 1962-09-28 Engstfeld Wilh Machine pour la coulée de pièces métalliques dans des moules durables
FR1424958A (fr) * 1964-07-24 1966-01-14 Machine à couler, avec porte-moules inclinable
US3333625A (en) * 1964-11-19 1967-08-01 Howard A Fromson Method of casting fusible materials
US3635791A (en) * 1969-08-04 1972-01-18 Gen Motors Corp Pressure pouring in a vacuum environment
DE2164755C3 (de) * 1971-12-27 1975-10-16 Friedhelm Prof. Dr.-Ing. 6332 Ehringshausen Kahn Verfahren und Vorrichtung zum Gießen und zur Erstarrungslenkung von Gußstücken in Gießformen
US3863704A (en) * 1973-01-02 1975-02-04 Freidhelm Kahn Method of casting by pouring metal from a melt supply through a feeder into a mold
DE2358719A1 (de) * 1973-11-26 1975-06-05 Dso Metalurgia Rudodobiv Verfahren und vorrichtung zum giessen von metallen und metall-legierungen
JPS5396920A (en) * 1977-02-04 1978-08-24 Honda Kinzoku Gijutsu Kk Casting machine
DE2936418A1 (de) * 1979-09-08 1981-03-26 Siegerländer Kupferwerke GmbH, 5900 Siegen Verfahren und einrichtung zum giessen von metallen unter verwendung einer form
GB2080714B (en) * 1980-07-31 1984-07-25 Richards Brinley James Tilting mould in casting
DE3521086A1 (de) * 1985-06-12 1986-12-18 MKB Enebra Metallguß-Gesellschaft mbH, 8078 Eichstätt Verfahren und vorrichtung zum giessen von gegenstaenden aus metallen
GB8604386D0 (en) * 1986-02-21 1986-03-26 Cosworth Res & Dev Ltd Casting
JPH02274372A (ja) * 1989-04-12 1990-11-08 Asahi Tec Corp 鋳造装置
JPH03118956A (ja) * 1989-09-29 1991-05-21 Asahi Tec Corp 可傾鋳造装置および可傾鋳造法
US5163500A (en) * 1991-12-13 1992-11-17 Ford Motor Company Rollover method for metal casting

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10019309A1 (de) * 2000-04-19 2001-10-31 Vaw Mandl & Berger Gmbh Linz Verfahren und Vorrichtung zum Rotationsgießen
DE10019309C2 (de) * 2000-04-19 2002-04-18 Vaw Mandl & Berger Gmbh Linz Verfahren und Vorrichtung zum Rotationsgießen
US6715535B2 (en) 2000-04-19 2004-04-06 Vaw Mandl & Berger Gmbh Method of and device for rotary casting
DE102016220240A1 (de) 2015-10-15 2017-04-20 Volkswagen Aktiengesellschaft Rotationsgießverfahren

Also Published As

Publication number Publication date
JP2952523B2 (ja) 1999-09-27
WO1994029050A3 (de) 1995-03-23
DE59407918D1 (de) 1999-04-15
DE4318252A1 (de) 1994-12-08
ATE177354T1 (de) 1999-03-15
CZ290291B6 (cs) 2002-07-17
US5626180A (en) 1997-05-06
WO1994029050A2 (de) 1994-12-22
CZ24695A3 (en) 1996-01-17
EP0656819A1 (de) 1995-06-14
HU217381B (hu) 2000-01-28
ES2131199T3 (es) 1999-07-16
JPH07509664A (ja) 1995-10-26
HUT68972A (en) 1995-08-28

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