EP1488872A1 - Dispositif pour la fabrication de moules de coulée - Google Patents

Dispositif pour la fabrication de moules de coulée Download PDF

Info

Publication number
EP1488872A1
EP1488872A1 EP04450106A EP04450106A EP1488872A1 EP 1488872 A1 EP1488872 A1 EP 1488872A1 EP 04450106 A EP04450106 A EP 04450106A EP 04450106 A EP04450106 A EP 04450106A EP 1488872 A1 EP1488872 A1 EP 1488872A1
Authority
EP
European Patent Office
Prior art keywords
plate
boundary
chamber
chamber space
air
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
EP04450106A
Other languages
German (de)
English (en)
Other versions
EP1488872B1 (fr
Inventor
Erling Olsen
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.)
Boehler Bleche Multilayer GmbH
Original Assignee
Boehler Bleche Multilayer 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 Boehler Bleche Multilayer GmbH filed Critical Boehler Bleche Multilayer GmbH
Priority to AT04450106T priority Critical patent/ATE408468T1/de
Publication of EP1488872A1 publication Critical patent/EP1488872A1/fr
Application granted granted Critical
Publication of EP1488872B1 publication Critical patent/EP1488872B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C11/00—Moulding machines characterised by the relative arrangement of the parts of same
    • B22C11/10—Moulding machines characterised by the relative arrangement of the parts of same with one or more flasks forming part of the machine, from which only the sand moulds made by compacting are removed

Definitions

  • the invention relates to a boundary plate for a chamber space for creation a molding at least one casting mold, with prepared molding sand for Fitting with compressed air in the chamber space enclosing a model blown and the air through slots in at least one of the boundary plates of the chamber space is carried out.
  • Castings are increasingly used in modern technology, because this due to the improved manufacturing process, the increased quality of the Cast metal and the possibility of largely automated Manufacturing technology high product quality and economy especially in one Have series production.
  • Casting molds can be produced in the box and boxless process, whereby at the first two boxes, each with a model half filled with foundry sand and after compacting the sand positioned congruently to each other and ready for casting.
  • a boxless mold production developed special facilities.
  • a by panels delimit chamber space, with two opposing panels Wear model parts and are movable to each other.
  • At least one more record has a mostly gap-shaped, wider opening through which molding sand can be blown in, for a discharge of the blowing air from the Chamber space narrow slits are provided in the other plate (s).
  • the boxless process takes place after the Chamber space with foundry sand in the blowing process a mutual approach the model plates and thus further compacting the sand, after which a Fitted with a fashion structure on both sides and can be provided.
  • Another molding is with the The counter model structure fits closely to the prefabricated, whereby a plurality of similar mold cavities in a row of moldings is formed, which is filled with liquid metal for the serial production of castings can be.
  • the processed molding sand is used in the boxless molding manufacturing process in usually blown into the chambers with air at a pressure of approx. 2 to 3 bar.
  • a chamber consists of two side plates, two model plates, a base plate and a top or cover plate.
  • the molding sand has an abrasive effect on the boundary plates of the chamber space, so that this, also called chamber plates, according to the prior art case-hardened steel plates.
  • the ring slots for the Air discharge in the chamber plates provided for this are consistently such created that in pre-drilled holes of the case-hardened steel plates with a Thicknesses from 15 mm to 30 mm specially shaped nozzle pieces are pressed, the Head has a distance from the bore wall.
  • Such a case plate made of case hardened steel for one Chamber space which chamber plate a variety of nozzles equipped Has holes for creating the air discharge slots, can have the desired functions in a molding machine, However, it has the disadvantages of a short lifespan and an expensive one Production.
  • the invention now aims to provide a boundary plate for one Chamber space of the type mentioned to create which plate economically can be produced, a higher wear resistance and durability has and has the required performance.
  • This goal is achieved according to the invention in a generic chamber space achieved on the one hand in that at least one provided for the air discharge Boundary plate or chamber plate made of a wear-resistant material, for Example containing in% by weight more than 1.0% by weight carbon (C) and more than 8.0% by weight chromium (Cr), optionally further proportions of manganese (Mn), molybdenum (Mo), tungsten (W) and vanadium (V) are formed as main alloy elements and in a plurality of curved slots in the air discharge area (s) having.
  • the aim of the invention is in a chamber of the type mentioned also achieved in that at least one intended for air discharge Boundary plate or chamber plate in sandwich construction with a carrier plate and one formed from wear-resistant material facing the interior Hard layer plate is molded and the hard layer plate a variety of has curved slots with the air discharge means of the carrier plate correspond.
  • the advantages achieved with this embodiment of the invention are in particular in that due to the sandwich design only the most abrasion stressed thin parts of the chamber plate made of wear-resistant, mostly medium to is made of high-alloy steel and a stable supporting part made of tough structural steel consists. It can also be advantageous if the air discharge slots are in one thin, wear-resistant sheet metal, for example using a laser beam, be introduced, because this, due to the geometry, has advantages regarding a Machining accuracy conveyed.
  • the individual slots are curved according to the invention, so no straight webs are formed which, when excited during operation Resonance vibrations can occur, which are due to a general given material brittleness of highly wear-resistant materials an increased Show risk of breakage.
  • blocking may be favorable for the for curved air slots provided in the chamber plate or in the hard layer plate a shape of a preferably round, by webs have interrupted ring slot with a width of 0.4 to 0.6 mm.
  • the carrier plate made of structural steel, for example a material 52.3 is manufactured and has ventilation holes that the hard layer plate for example on a material no. 1.2601 according to the steel-iron list, a thickness of up to 3.8 mm and has interrupted ring slots whose hole pattern or Outside diameter and their geometric arrangement with that of Vent holes in the backing plate match and that the backing plate and the hard-laminated board is fitted according to the openings.
  • the joining of the Sandwich panels by gluing for example using a commercially available Metal adhesive, is created, the manufacturing technology can be further simplified and the Support and the damping of the hard layer plate can be improved.
  • this or the hard layer Sandwich plate is formed from a tool steel and one by thermal Temper has the highest wear resistance and toughness.
  • Fig. 1 shows a top view of the chamber interior of an upper or cover plate 1.
  • a plate 12 made homogeneously or according to a sandwich construction is one
  • Fasteners 123 are provided.
  • a carrier plate 11 which has ventilation bores 111, is such with a hard layer plate 12 with a thickness 121 connected or joined flat, that ring slots 2 in the hard layer plate 12 within the bore 111 of the Carrier plate 11 are positioned.
  • Fig. 3 shows a slit image or a top view of the chamber interior onto one Ring slot 2 in a boundary plate 1.
  • a ring slot 2 with one Outer diameter 23 has a slot width 22 and webs with a width 21. In the embodiment shown with three webs 21, these must be Bridge areas shear forces due to a higher pressure in the chamber and the inside of the ring slot. Resonance vibrations of a part are in the Operation not given.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Casting Devices For Molds (AREA)
  • Connection Of Plates (AREA)
  • Control Of Heat Treatment Processes (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
EP04450106A 2003-06-17 2004-05-11 Dispositif pour la fabrication de moules de coulée Expired - Lifetime EP1488872B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT04450106T ATE408468T1 (de) 2003-06-17 2004-05-11 Einrichtung zur erstellung von giessformen

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0094203A AT413949B (de) 2003-06-17 2003-06-17 Einrichtung zur erstellung von giessformen
AT9422003 2003-06-17

Publications (2)

Publication Number Publication Date
EP1488872A1 true EP1488872A1 (fr) 2004-12-22
EP1488872B1 EP1488872B1 (fr) 2008-09-17

Family

ID=33314969

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04450106A Expired - Lifetime EP1488872B1 (fr) 2003-06-17 2004-05-11 Dispositif pour la fabrication de moules de coulée

Country Status (4)

Country Link
EP (1) EP1488872B1 (fr)
AT (2) AT413949B (fr)
DE (1) DE502004008073D1 (fr)
DK (1) DK1488872T3 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT197976B (de) * 1957-05-08 1958-05-27 Dkfm Ing Walter Krivan Einseitig geschlossener Entlüftungszylinder zum Kernschießen
EP0315087A1 (fr) * 1987-10-31 1989-05-10 Harry Post Plaque de revêtement pour la chambre de moulage de machines à mouler sans châssis
EP0665100A1 (fr) * 1993-12-28 1995-08-02 CARL AUG. PICARD GMBH & CO. KG. Plan de travail

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2916465C2 (de) * 1979-04-24 1981-08-27 Gottfried 6335 Lahnau Zimmermann Düse zum Entlüften, Belüften oder Bedampfen von Formen
RU1780917C (ru) * 1989-06-29 1992-12-15 Научно-Производственное Объединение Технологии Автомобильной Промышленности Способ изготовлени разовых литейных форм и устройство дл его осуществлени
DE4229810C2 (de) * 1991-09-27 1995-02-23 Georg Fischer Giesereianlagen Modellplattenträger für druckluftbeaufschlagte Verdichtungsverfahren
ATE160713T1 (de) * 1993-12-28 1997-12-15 Picard Fa Carl Aug Auskleidungsplatte für formkammern

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT197976B (de) * 1957-05-08 1958-05-27 Dkfm Ing Walter Krivan Einseitig geschlossener Entlüftungszylinder zum Kernschießen
EP0315087A1 (fr) * 1987-10-31 1989-05-10 Harry Post Plaque de revêtement pour la chambre de moulage de machines à mouler sans châssis
EP0665100A1 (fr) * 1993-12-28 1995-08-02 CARL AUG. PICARD GMBH & CO. KG. Plan de travail

Also Published As

Publication number Publication date
ATA9422003A (de) 2005-11-15
ATE408468T1 (de) 2008-10-15
EP1488872B1 (fr) 2008-09-17
AT413949B (de) 2006-07-15
DK1488872T3 (da) 2009-02-02
DE502004008073D1 (de) 2008-10-30

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