EP1779944A1 - Masselotte avec bouchon pour fermer sa entrée - Google Patents

Masselotte avec bouchon pour fermer sa entrée Download PDF

Info

Publication number
EP1779944A1
EP1779944A1 EP06022265A EP06022265A EP1779944A1 EP 1779944 A1 EP1779944 A1 EP 1779944A1 EP 06022265 A EP06022265 A EP 06022265A EP 06022265 A EP06022265 A EP 06022265A EP 1779944 A1 EP1779944 A1 EP 1779944A1
Authority
EP
European Patent Office
Prior art keywords
feeder
plug
opening
mold
assembly according
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
EP06022265A
Other languages
German (de)
English (en)
Other versions
EP1779944B1 (fr
Inventor
Jürgen-Michael 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 GIESSTECHNISCHE PRODUKTE GmbH
GTP Schaefer Giesstechnishe Produkte GmbH
Original Assignee
GTP-SCHAEFER GIESSTECHNISCHE PRODUKTE GmbH
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 GIESSTECHNISCHE PRODUKTE GmbH, GTP Schaefer Giesstechnishe Produkte GmbH filed Critical GTP-SCHAEFER GIESSTECHNISCHE PRODUKTE GmbH
Priority to PL06022265T priority Critical patent/PL1779944T3/pl
Publication of EP1779944A1 publication Critical patent/EP1779944A1/fr
Application granted granted Critical
Publication of EP1779944B1 publication Critical patent/EP1779944B1/fr
Not-in-force 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
    • B22C9/08—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 feeder assembly for use in a mold used in the casting of metals, comprising a feeder body having a feeder body of an exothermic and / or insulating material having a feeder opening for connecting the feeder volume with the mold cavity of the mold.
  • the known feeder arrangement has the disadvantage that during the pouring of the liquid metal in the mold hot casting gases can form, which are displaced by the liquid metal in the mold cavity and thereby enter the feeder volume and pending in this under pressure.
  • the material composition of the feeder body is not excluded that it comes to an early, possibly explosive ignition of the feeder, so that the feeder is at least partially destroyed and is then no longer functional to the extent required.
  • the invention is therefore based on the object, a feeder arrangement of the type mentioned in such a way that a harmful influence of the resulting casting gases is avoided.
  • the feeder arrangement comprises a stopper which consists of a material which dissolves under the action of heat and which can be inserted into the feeder opening or the passage opening of the breaker core or molded part before or after the molding of the feeder body into the casting mold.
  • the plug initially prevents the entry of the casting gases into the feeder volume, so that the way into the feeder volume is only released when the liquid metal has come into contact with the stopper and has dissolved this. Thus, the harmful effects of premature entry of casting gases are avoided in the feeder volume.
  • the invention is applicable to both feeder arrangements in which by means of so-called hand molding of the feeder body is inserted by hand directly into the mold, in which case the stopper placed on the model body and the feeder body is placed such that the plug closes the feeder opening ,
  • the feeder body is formed by machine, including a breaker core or a corresponding shaped body, the stopper is inserted in the connection to the forming process in the exposed after removal of the model body from the mold openings.
  • the plug is held in a form-fitting manner in the opening receiving it.
  • the plug is provided on its outside with the edge of the opening engaging behind form-fitting designs.
  • the plug is held in the receiving opening it frictionally.
  • the plug has a conical shape, so that the plug is inserted with appropriate force in the associated opening and defines itself due to its conical shape. It goes without saying that plugs which can be fixed in a form-fitting manner via separate designs can also have a conical shape.
  • the plug consists of a material which can be gasified by the action of heat, for example a suitable plastic, in particular polystyrene.
  • the plug may also consist of a material which melts under the action of heat, preferably of a suitable metal.
  • This metal can be in his Composition matched to the processed in the mold alloy. It can be provided that the metal stopper is formed thin-walled to ensure a correspondingly rapid melting.
  • FIGURE shows a feeder arrangement with a plug for closing the inlet opening in a schematic representation.
  • the feeder insert designated by 10 has a feeder body 11 which comprises a wall region 13 enclosing a feeder volume 14 and a cover 12.
  • the feeder body 11 has an outer surface 16 and an inner surface 15 of the wall region 13 enclosing the feeder volume 14 and a bottom surface 17 in which a feeder opening 18 is formed.
  • a metallic molding 20 which has a hat-shaped shape.
  • the hat-shaped part 20 is preferably glued with a circumferential collar 21 with the bottom surface 17 of the feeder body 11 and projects outwardly with a ring 22, wherein in the hat-shaped part 20 closing lid surface 23, a passage opening 24 is formed.
  • Such a feeder arrangement is formed into a casting mold by placing the feeder arrangement with feeder body 11 and molded part 20, for example, on a spring mandrel attached to a model body, the spring mandrel passes through the passage opening 24 and extends to in the feeder volume 14 of the feeder body 11; Thus, during the shaping of the feeder arrangement, the feeder body 11 is centered with the molded part 20 on the model body.
  • Part of the feeder arrangement is also a plug 25, which belongs to the scope of delivery of the feeder arrangement and is matched in its dimensions to the respective opening to be closed.
  • the dimension of the plug 25 is matched to the passage opening 24 of the molding 20;
  • the plug 25 is formed with a slightly conical shape, so that after pressing the plug 25 into the passage opening 24 until the bearing of a support ring 26 on the cover surface 23 of the molding 20, the plug 25 is frictionally fixed in the passage opening 24.
  • the stopper 25 must be matched to the dimension of the feeder opening 18 so that the stopper 25 can be inserted into the feeder opening 18 either after the feeder has been formed or else in the case of hand-forming installations can be fixed to the placement of the feeder on the model body, so that the plug 25 closes the feeder opening 18 during placement of the feeder body 11.
  • the feeder arrangement comprises, as an alternative to the molded part 20 shown in the drawing, a breaker core, as it is known from US Pat DE 42 19 632 A is known.
EP06022265A 2005-10-28 2006-10-25 Masselotte avec bouchon pour fermer sa entrée Not-in-force EP1779944B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL06022265T PL1779944T3 (pl) 2005-10-28 2006-10-25 Układ zasilacza z zatyczką do zamykania jego otworu wlotowego

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202005017074U DE202005017074U1 (de) 2005-10-28 2005-10-28 Speiseranordnung mit einem Stopfen zum Verschließen ihrer Eintrittsöffnung

Publications (2)

Publication Number Publication Date
EP1779944A1 true EP1779944A1 (fr) 2007-05-02
EP1779944B1 EP1779944B1 (fr) 2010-02-03

Family

ID=35530698

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06022265A Not-in-force EP1779944B1 (fr) 2005-10-28 2006-10-25 Masselotte avec bouchon pour fermer sa entrée

Country Status (4)

Country Link
EP (1) EP1779944B1 (fr)
AT (1) ATE456986T1 (fr)
DE (2) DE202005017074U1 (fr)
PL (1) PL1779944T3 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012105886B3 (de) * 2012-07-03 2013-12-19 GTP Schäfer Gießtechnische Produkte GmbH Verfahren zum Einbringen von Abdeckpulvern bei Gießspeisern
EP2792432A1 (fr) * 2013-04-16 2014-10-22 Foseco International Limited Élément d'alimentation
WO2017007433A1 (fr) * 2015-07-08 2017-01-12 Gündoğdu Muhittin Noyau conique de rupteur de métal

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH571372A5 (en) * 1974-03-28 1976-01-15 Feichtinger Heinrich Sen Degassing melts during solidification in a mould - using gas bubbles and baffle-plate to circulate melt in feeder head
EP0327226A1 (fr) * 1988-01-30 1989-08-09 Foseco International Limited Moules pour la coulée de métaux comportant des manchons pourvus d'un filtre
DE29817471U1 (de) 1998-09-30 2000-05-11 Gtp Schaefer Giestechnische Pr Speisereinsatz mit Verzögerungseinlage
DE20012425U1 (de) 2000-07-18 2001-02-15 Stetter Thomas Verlängerung für eine Schere, Pinzette oder ähnliche Werkzeuge

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH571372A5 (en) * 1974-03-28 1976-01-15 Feichtinger Heinrich Sen Degassing melts during solidification in a mould - using gas bubbles and baffle-plate to circulate melt in feeder head
EP0327226A1 (fr) * 1988-01-30 1989-08-09 Foseco International Limited Moules pour la coulée de métaux comportant des manchons pourvus d'un filtre
DE29817471U1 (de) 1998-09-30 2000-05-11 Gtp Schaefer Giestechnische Pr Speisereinsatz mit Verzögerungseinlage
DE20012425U1 (de) 2000-07-18 2001-02-15 Stetter Thomas Verlängerung für eine Schere, Pinzette oder ähnliche Werkzeuge

Also Published As

Publication number Publication date
DE502006006074D1 (de) 2010-03-25
PL1779944T3 (pl) 2010-10-29
EP1779944B1 (fr) 2010-02-03
DE202005017074U1 (de) 2005-12-29
ATE456986T1 (de) 2010-02-15

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