EP3100801A1 - 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
EP3100801A1
EP3100801A1 EP16171209.6A EP16171209A EP3100801A1 EP 3100801 A1 EP3100801 A1 EP 3100801A1 EP 16171209 A EP16171209 A EP 16171209A EP 3100801 A1 EP3100801 A1 EP 3100801A1
Authority
EP
European Patent Office
Prior art keywords
frame
casting
mold
feeder
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.)
Granted
Application number
EP16171209.6A
Other languages
German (de)
English (en)
Other versions
EP3100801B1 (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
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 GTP Schaefer Giesstechnishe Produkte GmbH filed Critical GTP Schaefer Giesstechnishe Produkte GmbH
Publication of EP3100801A1 publication Critical patent/EP3100801A1/fr
Application granted granted Critical
Publication of EP3100801B1 publication Critical patent/EP3100801B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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 method for producing casting molds having a casting model which images the mold cavity of the casting mold and at least one side feed system positioned on the casting model, wherein the side feed system has a feeder cavity forming a feeder cavity and a feeder bowl having a connection channel to the casting model or cavity and the main axis of the feeder bowl Connecting channel runs at an angle to the main axis of the feeder, as well as an apparatus for carrying out the method in the form of a heat-resistant material frame with a mesh-like fabric spanned therein.
  • 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 later than the casting solidifies, so that during the solidification process, a material transport can take place towards the casting, which feeds the casting.
  • the feeders consist of an exothermic and / or insulating material or are formed as so-called natural feeders in the mold sand enclosing the casting model.
  • 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.
  • the invention is therefore based on the object to provide a method and a device suitable for carrying out the method, which restricts the occurrence of existing after casting on the casting and to be eliminated by cleaning metal residues in the use of side feed systems in the production of molds.
  • the invention provides for this purpose a method in which in the mold between the casting model side end of the connecting channel and the casting model consisting of a heat-resistant material frame with a clamped therein, consisting of a refractory material and having a through hole containing net-like fabric is inserted and fixed therein ,
  • 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 for tension and retention of the net-like fabric in the frame, irrespective of the strength of the molding sand at the locating point 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.
  • the frame positioned together with the casting mold and the casting model together with the side feed system before creating the mold by molding the casting model on a casting model bearing model plate on the casting model Side feed system is molded.
  • 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.
  • a recess for subsequent insertion of side feed system and frame is formed when creating the mold by molding the casting model.
  • a suitable for use with the method according to the invention frame with a set therein, consisting of a refractory material and a through hole having net-like fabric according to an embodiment of the invention has a conically narrowing contour, wherein the net-like fabric fixed to the narrowing side of the frame is.
  • 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.
  • 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.
  • the frame 16 consisting of two sub-frames 24, 26 is shown in its design, but without that of the frame 16 for supporting net-like fabric.
  • 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 subframe 24, 26 accordingly consists of three sides circumferential 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 additionally formed in the illustrated embodiment, 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)
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 true EP3100801A1 (fr) 2016-12-07
EP3100801B1 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)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE8418911U1 (de) 1984-06-21 1987-11-19 Chemex GmbH, 5802 Wetter Seitenspeiser für Gußstücke
FR2647381A1 (fr) * 1989-04-25 1990-11-30 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
DE4100994A1 (de) * 1990-03-14 1991-09-19 Nippon Muki K K Netzartiger stoff fuer giesszwecke

Family Cites Families (7)

* 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
DE3423220A1 (de) * 1984-06-21 1986-01-02 Chemex GmbH, 5802 Wetter Seitenspeiser fuer gussstuecke
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
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

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE8418911U1 (de) 1984-06-21 1987-11-19 Chemex GmbH, 5802 Wetter Seitenspeiser für Gußstücke
FR2647381A1 (fr) * 1989-04-25 1990-11-30 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
DE4100994A1 (de) * 1990-03-14 1991-09-19 Nippon Muki K K Netzartiger stoff fuer giesszwecke

Also Published As

Publication number Publication date
DE102015108656A1 (de) 2016-12-01
EP3100801B1 (fr) 2019-03-06
DE102015108656B4 (de) 2017-10-19
TR201906639T4 (tr) 2019-05-21
US20160346832A1 (en) 2016-12-01

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