EP0945200A1 - Moule de fonderie et procédé de fabrication - Google Patents

Moule de fonderie et procédé de fabrication Download PDF

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Publication number
EP0945200A1
EP0945200A1 EP98123690A EP98123690A EP0945200A1 EP 0945200 A1 EP0945200 A1 EP 0945200A1 EP 98123690 A EP98123690 A EP 98123690A EP 98123690 A EP98123690 A EP 98123690A EP 0945200 A1 EP0945200 A1 EP 0945200A1
Authority
EP
European Patent Office
Prior art keywords
molding material
binder
molding
weight
mold
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.)
Withdrawn
Application number
EP98123690A
Other languages
German (de)
English (en)
Inventor
Herbert Dipl.-Ing. Grolla
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.)
Heinrich Wagner Sinto Maschinenfabrik GmbH
Original Assignee
Heinrich Wagner Sinto Maschinenfabrik 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 Heinrich Wagner Sinto Maschinenfabrik GmbH filed Critical Heinrich Wagner Sinto Maschinenfabrik GmbH
Publication of EP0945200A1 publication Critical patent/EP0945200A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds

Definitions

  • the invention relates to a method for producing Casting molds for metal casting by molding a model with a free-flowing using a water-based binder setable molding material and one according to the process manufactured mold.
  • the foundries are pourable in the metal foundries and mechanically solidifiable substances used, whereby before especially the easy and cheap to produce molding sand Scope used.
  • a binder e.g. B. sound, which Water is added.
  • Such a molding material is not only cheap, but also has little or no impact on the environment also simple and easy to prepare after use and reuse with it.
  • the invention has for its object a method of type described at the outset so that a Casting mold can be produced from a molding material, on the one hand is easy to shape and easy to reprocess and on the other hand has a high thermal conductivity, the one ensures rapid cooling of the casting.
  • This object is achieved in that as Molding material with a granulate made of a metallic material a grain size of 0.01 to 2 mm is used, the 1 to 20% by weight of the binder is added, the molding material then into a mold box containing a model plate filled and the filled molding material in the molding box is compressed.
  • the molding material according to the invention advantageously consists of Aluminum, which is not only high thermal conductivity, but also a relatively low specific one Has weight so that the mold as such is light remains manageable.
  • the metallic granulate becomes advantageous bound with a clay / water mixture, whereby here a clay / water mixture of 5 wt.% each as advantageous has highlighted.
  • a molded material prepared in this way remains free-flowing so that it is poured into the molding box can be. Then the molding material is in Compressed in the usual way so that a dimensionally stable shape which is advantageous for casting engine blocks or similar parts is suitable.
  • the thermal conductivity of the molding material can be caused by the choice of granules and on the other hand by adding Quartz, zircon etc. can be set in a wide range, so that the desired cooling rate in the casting is obtained.
  • Molding material can cool down by 20% to 40%, respectively reduced after setting and choosing the metallic granules become. This makes it possible to compare one to produce fine-grained cast structure to conventional sand molds.
  • Curve 1 shows a mold shape.
  • the Curves 2 and 3 a casting mold made of zircon sand or quartz sand and curve 4 a mold in which the granules made of aluminum with a grain size of approx. 0.3 mm. From the illustration it can be seen that with a cast in a mold the cooling of the melt due to the large Heat capacity of the mold runs very quickly, whereby the solidification process, which is completed at about 480 ° C is done within a minute. The cooling behavior in a conventional zircon or Quartz sand mold lasts considerably longer than with permanent mold casting and is over seven minutes. In an inventive Casting mold with a molding sand with a granulate Aluminum with a grain size of 0.3 mm becomes the same Degree of cooling reached in less than five minutes, so that there is a much more fine-grained structure here.
  • the invention ensures on the one hand that the so prepared Casting cast made cooled in a short time is, on the other hand, ensures that the manufacturing cost not bigger for such a mold is more essential than with conventional sand molds bring worse cooling behavior with it.
  • the compression of the molding material in the mold takes place on best that the molding material in the mold is pneumatic or mechanically, for example by means of one of one Press actuated stamp is compressed.
  • a special one good impression of the model can be achieved that the molding material pneumatically and mechanically is densified.
  • carbon can be buried.
  • Also can be used for control metallic oxides are added to the thermal conductivity be, for example iron oxide.
  • Casting mold depends on the molding material used Also suitable for higher melting casting compounds and after easy to recycle their use.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Mold Materials And Core Materials (AREA)
EP98123690A 1998-03-27 1998-12-12 Moule de fonderie et procédé de fabrication Withdrawn EP0945200A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813847 1998-03-27
DE1998113847 DE19813847A1 (de) 1998-03-27 1998-03-27 Gießform und Verfahren zu deren Herstellung

Publications (1)

Publication Number Publication Date
EP0945200A1 true EP0945200A1 (fr) 1999-09-29

Family

ID=7862732

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98123690A Withdrawn EP0945200A1 (fr) 1998-03-27 1998-12-12 Moule de fonderie et procédé de fabrication

Country Status (2)

Country Link
EP (1) EP0945200A1 (fr)
DE (1) DE19813847A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1216771A3 (fr) * 2000-11-28 2006-10-04 Dr.Ing. h.c.F. Porsche Aktiengesellschaft Noyau inséré pour la fabrication d'un moule de fonderie et procédé pour la fabrication d'un tel moule de fonderie

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014110826A1 (de) * 2014-07-30 2016-02-04 Fritz Winter Eisengiesserei Gmbh & Co. Kg Verfahren zum Gießen von Gussteilen

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5581041A (en) * 1978-12-12 1980-06-18 Sintokogio Ltd Mold molding method
JPS5650755A (en) * 1979-09-28 1981-05-08 Honda Motor Co Ltd Mold for production of aulminum alloy casting
JPS61293624A (ja) * 1985-06-21 1986-12-24 Aisin Takaoka Ltd 鋳型材料
JPS63140739A (ja) * 1986-12-02 1988-06-13 Daido Steel Co Ltd 鋳型
JPH08229631A (ja) * 1995-02-23 1996-09-10 Mitsubishi Heavy Ind Ltd 銅合金用鋳型
US5722038A (en) * 1989-09-15 1998-02-24 Mclaughlin; Timothy M. Mold element construction and related method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5581041A (en) * 1978-12-12 1980-06-18 Sintokogio Ltd Mold molding method
JPS5650755A (en) * 1979-09-28 1981-05-08 Honda Motor Co Ltd Mold for production of aulminum alloy casting
JPS61293624A (ja) * 1985-06-21 1986-12-24 Aisin Takaoka Ltd 鋳型材料
JPS63140739A (ja) * 1986-12-02 1988-06-13 Daido Steel Co Ltd 鋳型
US5722038A (en) * 1989-09-15 1998-02-24 Mclaughlin; Timothy M. Mold element construction and related method
JPH08229631A (ja) * 1995-02-23 1996-09-10 Mitsubishi Heavy Ind Ltd 銅合金用鋳型

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch Week 8706, Derwent World Patents Index; Class A28, AN 87-039096, XP002110132 *
PATENT ABSTRACTS OF JAPAN vol. 004, no. 123 (M - 029) 30 August 1980 (1980-08-30) *
PATENT ABSTRACTS OF JAPAN vol. 005, no. 108 (M - 078) 14 July 1981 (1981-07-14) *
PATENT ABSTRACTS OF JAPAN vol. 012, no. 392 (M - 755) 19 October 1988 (1988-10-19) *
PATENT ABSTRACTS OF JAPAN vol. 097, no. 001 31 January 1997 (1997-01-31) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1216771A3 (fr) * 2000-11-28 2006-10-04 Dr.Ing. h.c.F. Porsche Aktiengesellschaft Noyau inséré pour la fabrication d'un moule de fonderie et procédé pour la fabrication d'un tel moule de fonderie

Also Published As

Publication number Publication date
DE19813847A1 (de) 1999-09-30

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