EP3100801B1 - Procede et dispositif de production d'au moins un moule presentant un systeme de memoire de page - Google Patents

Procede et dispositif de production d'au moins un moule presentant un systeme de memoire de page Download PDF

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Publication number
EP3100801B1
EP3100801B1 EP16171209.6A EP16171209A EP3100801B1 EP 3100801 B1 EP3100801 B1 EP 3100801B1 EP 16171209 A EP16171209 A EP 16171209A EP 3100801 B1 EP3100801 B1 EP 3100801B1
Authority
EP
European Patent Office
Prior art keywords
frame
casting
feeder system
model
casting model
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.)
Active
Application number
EP16171209.6A
Other languages
German (de)
English (en)
Other versions
EP3100801A1 (fr
Inventor
Jörg Schäfer
Thomas Schäfer
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.)
GTP Schaefer Giesstechnishe Produkte GmbH
Original Assignee
GTP Schaefer Giesstechnishe Produkte GmbH
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Publication date
Application filed by GTP Schaefer Giesstechnishe Produkte GmbH filed Critical GTP Schaefer Giesstechnishe Produkte GmbH
Publication of EP3100801A1 publication Critical patent/EP3100801A1/fr
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Publication of EP3100801B1 publication Critical patent/EP3100801B1/fr
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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
    • B22C9/088—Feeder heads
    • 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
    • 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
    • B22C9/084—Breaker cores

Definitions

  • the invention relates to a side feed system for use in molds in which a molding cavity imaging casting model is formed, wherein the side feed system having an inner feeder cavity feeder and a connecting channel to the casting model or the mold cavity having feeder and the main axis of the connecting channel at an angle to the main axis of the feeder runs, and wherein in the connecting channel a consisting of a refractory material mesh-like fabric is arranged.
  • the feeders In the foundry industry, it is often necessary to arrange additional feeders in the molds, which fill with the casting of the casting with the liquid metal and compensate for the solidification of the casting occurring volume deficiencies in order to prevent a voids formation in the casting.
  • the feeders must be such that the liquid metal fed therein solidifies later than the casting, so that during the solidification process, a material transport can take place towards the casting, which tightly feeds the casting.
  • the feeders consist of an exothermic and / or insulating material or are shaped as so-called natural feeders in the mold sand enclosing the casting model.
  • the feeders are arranged with an arbitrary geometric shape at the point to be fed of the later casting on the casting model and firmly formed or formed during the preparation of the mold by compaction of the introduced molding sand.
  • cavities are created during molding of the casting model by means of the molding sand into which individual, consisting of an exothermic and / or insulating material feeders are subsequently used and thereby connected to the created by the demolding of the casting mold cavity.
  • the feeders are distinguished in so-called head feeders, which are arranged on the G confusemodellober Structure or the later casting, and in so-called side feeders, which are positioned for example due to the inaccessibility of upper feed points laterally to the casting model or later mold cavity and this on the one hand an inner feeder cavity forming feeder and a feed channel having a connection channel to the casting model, wherein the main axis of the connection channel extends at an angle to the main axis of the feeder.
  • This feeder dome is formed when creating the mold by means of a corresponding model in the molding sand of the mold or also consists of a separate, made of an exothermic and / or insulating material molding.
  • Such a side feed system is for example from the DE 84 18 911.8 U1 known.
  • a filter fabric is turned on.
  • the filter fabric is held in a frame made of sand, which is formed in the molding sand during the production of the mold.
  • the invention is therefore an object of the invention to provide a side feed system having the features mentioned, a frame for use with such a side feed system and a method for producing molds containing such a side feed system, in which each of the net-like fabric provides a low flow resistance for the liquid metal and yet limits the occurrence of existing after casting on the casting and to be removed by cleaning metal residues.
  • the invention initially provides a side feed system in which the net-like fabric has a through-hole and is clamped in a frame made of a heat-resistant material between the casting-model-side end of the connection channel and the casting model or the mold cavity.
  • the invention has the advantage that due to the net-like fabric spanned in the frame, these frames can be reliably handled as a separate component in the production of the casting mold and can be positioned together with the formation of the side feed system in the immediate vicinity of the casting mold or mold cavity.
  • the arrangement of the frame allows tension and retention of the net-like Fabric in the frame regardless of the strength of the molding sand at the positioning of the net-like fabric.
  • the use of a frame made of a heat-resistant material for holding the tensioned net-like fabric also has the advantage that the frame is not melted by the hot metal flowing through the mold and thus do not create harmful for the casting process combustion gases.
  • a frame suitable for use with the side feed system according to the invention has one according to an embodiment of the invention conically narrowing contour, wherein the net-like tissue is fixed to the narrowing and during molding in the mold to the casting model or the mold cavity side facing the frame.
  • the net-like tissue comes to lie in the positioning of the frame very close to the G confusemodellkontur, while can be used on the located on the widening side of the frame frame part for the determination of the frame in the mold.
  • the frame consists of two mutually movable subframe, which are fixed against each other after application of the required tension of the net-like fabric.
  • this through-hole has a smaller dimension than the cross-section of the connecting channel located in the feeder lower part.
  • the through hole has an area of 10 to 50 percent of the area enclosed by the frame surface of the connecting channel, wherein the mesh width, that is, the width of the mesh openings, 1 to 20 mm at a Width of the net structure forming threads from 1 to 15 mm.
  • the through hole is arranged centrally in the frame and located centrally due to the positioning of the frame in the connecting channel of the feeder dome.
  • the frame may be made of metal, ceramic or a refractory material as each heat-resistant material.
  • the frame together with the side feed system before creating the mold by molding the casting model on a casting model supporting the model plate on the casting model is positioned and molded together with the casting model and the side feed system when creating the mold.
  • the casting mold is produced by jointly molding the casting model with the side feeder system positioned thereon, a recess for the subsequent insertion of the frame is formed.
  • Fig. 1 Initially, only the schematic arrangement of the parts to be introduced in a possibly divided mold box for a mold to be produced parts such as casting model 10, side feed system 11 and the not shown net-like fabric holding frame 16 to each other visible.
  • the aforementioned arrangement is placed on a model plate 19.
  • the parts mentioned are arranged in their technically necessary assignment to each other either in the mold box and by filling the mold box or the mold box halves with molding sand or molded, or it is only the casting model molded in the molding box, whereby by accordingly additional moldings recesses are made in the molding sand, in which then the frame and the side feed system are arranged.
  • the side feed system 11 consists of a feeder 12 having an inner feeder cavity 13 and a feeder cup 14 having a connection channel 15, which is arranged with its connection channel 15 so that a connection between the after removal of the casting model 10 from the not shown Form box existing and to be filled during casting with the hot metal mold cavity and the inner feeder cavity 13 of the feeder 12 is given.
  • a connection between the after removal of the casting model 10 from the not shown Form box existing and to be filled during casting with the hot metal mold cavity and the inner feeder cavity 13 of the feeder 12 is given.
  • net-like fabric having a through hole as a passage for the connecting channel 15 of the feeder dome 14 flowing hot metal.
  • the frame 16 is thereby arranged as close as possible to the casting model 10 or the mold cavity produced thereby, which is supported by the conically narrowing contour of the frame, as far as the narrowing side of the frame 16 faces the casting mold 10 and the mold cavity and the net-like fabric is fixed to the narrowing side of the frame 16.
  • the frame may be made of metal, ceramic or a refractory material.
  • Fig. 2 to 4 is the frame 16 consisting of two sub-frames 24, 26 shown in its design, but without the net-like tissue to be held by the frame 16.
  • the first sub-frame 24 is shown, which forms the outer sub-frame of the two-part frame 16, wherein from Fig. 3 the second sub-frame 26 can be seen, which is so far identical to the first sub-frame 24, but in its dimensions designed such that the second sub-frame 26 in the first sub-frame 24 can be inserted or inserted, wherein the (not shown) reticulate Tissue between the two sub-frames 24 and 26 is inserted and tensioned accordingly.
  • Each sub-frame 24, 26 consists of three circumferential sides frame legs 20 and each forms a U-shaped configuration, wherein the open end of the U-shaped frame legs 20 is closed by a flat connecting leg 27, so that each sub-frame 24, 26 in is designed to be stable.
  • the two subframes each have a conical shape by the frame legs 20 are each placed obliquely so that the lower edge 21 of the frame legs 20 surrounds a smaller area than the upper edge 22 of the frame legs 20.
  • the enclosed by the lower edge of the frame legs 21 The surface is then closed by the net-like fabric inserted between the sub-frames 24, 26, which means that the net-like fabric is arranged on the conically narrowing side of the frame 16 in the finished frame 16.
  • the fixing the frame 16 is used.
  • three fixing openings 28 are formed on the two opposite frame legs 20 of the two sub-frames 24 and 26, which allow a fixation of the frame 16 on the model structure or in molding sand.
  • the molding sand penetrate the fixing holes and thus ensure a positive connection between the frame 16 and the molding sand. It is also conceivable to beat fixing nails 28 through the fixing openings in order to anchor the frame 16 in the foundry sand or else on the model structure.

Landscapes

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

Claims (10)

  1. Système de masselotte latérale (11) pour mise en oeuvre dans des moules, dans lesquels est conformé un modèle de moulage (10) représentant un espace creux de moule, le système de masselotte latérale (11) comportant une masselotte (12) constituant un espace creux de masselotte intérieur (13) et une calotte de masselotte (14) comportant un conduit de liaison (15) vers le modèle de moulage (10) ou l'espace creux de moule et l'axe principal du conduit de liaison (15) passant à angle droit de l'axe principal de la masselotte (12) et un tissu réticulé composé d'un matériau réfractaire étant disposé dans le conduit de liaison (15), caractérisé en ce que le tissu réticulé comporte un trou de passage et est tendu dans un châssis (16) composé d'un matériau thermorésistant, fixé entre l'extrémité côté modèle de moulage du conduit de liaison (15) et le modèle de moulage (10) ou l'espace creux de moule.
  2. Système de masselotte latérale (11) selon la revendication 1, pour lequel le châssis (16) comporte un contour se rétrécissant de façon conique et le tissu réticulé est fixé au côté du châssis (16) se rétrécissant et tourné lors de la conformation dans le moule vers le modèle de moulage (10) ou l'espace creux de moule.
  3. Système de masselotte latérale (11) selon la revendication 2, pour lequel le châssis (16) est composé de deux parties de châssis (24, 26) mobiles l'une contre l'autre, qui peuvent être fixées l'une contre l'autre après application de la tension nécessaire du tissu réticulé.
  4. Système de masselotte latérale (11) selon la revendication 2 ou 3, pour lequel le trou de passage constitué dans le tissu réticulé comporte une dimension plus faible que la section du conduit de liaison (15) constitué dans la partie inférieure de masselotte (14).
  5. Système de masselotte latérale (11) selon l'une quelconque des revendications 2 à 4, pour lequel le trou de passage est disposé au centre du châssis (16) et est posé au centre dans le conduit de liaison (15) de la calotte de masselotte (14) en raison du positionnement du châssis (16).
  6. Système de masselotte latérale (11) selon l'une quelconque des revendications 2 à 5, pour lequel le châssis (16) est en métal.
  7. Système de masselotte latérale (11) selon l'une quelconque des revendications 2 à 5, pour lequel le châssis (16) est en céramique.
  8. Système de masselotte latérale (11) selon l'une quelconque des revendications 2 à 5, pour lequel le châssis (16) est dans un matériau réfractaire.
  9. Procédé pour la fabrication d'un système de masselotte latérale (11) selon la revendication 1, contenant des moules, pour lequel le châssis (16) est positionné sur le modèle de moulage (10) ensemble avec le système de masselotte latérale (11) avant l'élaboration du moule par moulage du modèle de moulage (10) sur une plaque de modèle (19) portant le modèle de moulage et est moulé lors de l'élaboration du moule ensemble avec le modèle de moulage (10) et le système de masselotte latérale (11).
  10. Procédé pour la fabrication d'un système de masselotte latérale (11) selon la revendication 1, contenant des moules, pour lequel, lors de l'élaboration du moule par surmoulage commun du modèle de moulage (10) avec le système de masselotte latérale (11) positionné sur celui-ci, un évidement pour insertion ultérieure du châssis (16) est démoulé.
EP16171209.6A 2015-06-01 2016-05-25 Procede et dispositif de production d'au moins un moule presentant un systeme de memoire de page Active EP3100801B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015108656.5A DE102015108656B4 (de) 2015-06-01 2015-06-01 Seitenspeisersystem, ein netzartiges Gewebe haltender Rahmen sowie Verfahren zur Herstellung einer Gießform

Publications (2)

Publication Number Publication Date
EP3100801A1 EP3100801A1 (fr) 2016-12-07
EP3100801B1 true EP3100801B1 (fr) 2019-03-06

Family

ID=56080324

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16171209.6A Active EP3100801B1 (fr) 2015-06-01 2016-05-25 Procede et dispositif de production d'au moins un moule presentant un systeme de memoire de page

Country Status (4)

Country Link
US (1) US20160346832A1 (fr)
EP (1) EP3100801B1 (fr)
DE (1) DE102015108656B4 (fr)
TR (1) TR201906639T4 (fr)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5556077A (en) * 1978-10-21 1980-04-24 Bridgestone Tire Co Ltd Ceramic porous body
DE3244079A1 (de) * 1982-11-29 1984-06-14 BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau Sieb zur zurueckhaltung von oxydhaeuten beim vergiessen von aluminium und seinen legierungen
DE3423220A1 (de) * 1984-06-21 1986-01-02 Chemex GmbH, 5802 Wetter Seitenspeiser fuer gussstuecke
DE8418911U1 (de) 1984-06-21 1987-11-19 Chemex GmbH, 5802 Wetter Seitenspeiser für Gußstücke
DE8422497U1 (de) * 1984-07-28 1985-01-10 Stettner & Co, 8560 Lauf Keramischer giessfilter
DE8702296U1 (de) * 1987-02-14 1987-04-09 L. Bregenzer Gießereibedarf GmbH & Co, 7000 Stuttgart Seitenspeiser für den Einsatz in Gießformen
FR2647381B1 (fr) * 1989-04-25 1991-09-13 Fonderie Aluminium Ste Nle Filtre pour le filtrage d'alliages d'aluminium lors d'operations de moulage par coulee, ainsi que le procede mettant en oeuvre ce filtre
JPH03264142A (ja) * 1990-03-14 1991-11-25 Nippon Muki Co Ltd 鋳造用網体
DE20318773U1 (de) * 2003-12-01 2005-04-07 Drache Umwelttechnik Gmbh Keramischer Schaumfilter
DE202005006259U1 (de) * 2005-04-19 2005-08-18 Eisenschmid, Jakob Luftreinigungsfilter für Heizeinsätze
US8794298B2 (en) * 2009-12-30 2014-08-05 Rolls-Royce Corporation Systems and methods for filtering molten metal

Non-Patent Citations (1)

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

Also Published As

Publication number Publication date
EP3100801A1 (fr) 2016-12-07
DE102015108656A1 (de) 2016-12-01
DE102015108656B4 (de) 2017-10-19
TR201906639T4 (tr) 2019-05-21
US20160346832A1 (en) 2016-12-01

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