EP1853398A1 - Chambre de coulee - Google Patents

Chambre de coulee

Info

Publication number
EP1853398A1
EP1853398A1 EP06705344A EP06705344A EP1853398A1 EP 1853398 A1 EP1853398 A1 EP 1853398A1 EP 06705344 A EP06705344 A EP 06705344A EP 06705344 A EP06705344 A EP 06705344A EP 1853398 A1 EP1853398 A1 EP 1853398A1
Authority
EP
European Patent Office
Prior art keywords
casting chamber
casting
inner tube
filling opening
chamber
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Withdrawn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
EP06705344A
Other languages
German (de)
English (en)
Inventor
Bernhard Fritsche Bernhard FRITSCHE
Bernd Watzinger Bernd WATZINGER
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.)
Buehler Druckguss AG
Original Assignee
Buehler Druckguss AG
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 Buehler Druckguss AG filed Critical Buehler Druckguss AG
Publication of EP1853398A1 publication Critical patent/EP1853398A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/2015—Means for forcing the molten metal into the die
    • B22D17/2023—Nozzles or shot sleeves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/14—Machines with evacuated die cavity

Definitions

  • the invention relates to a casting chamber for pressure casting of metallic materials in a die casting machine.
  • a die casting machine has at least one movable and a stationary mold part, which are divided along a parting plane, and a mold cavity enclosed by these mold parts.
  • This mold cavity to be cast metal is injected via a runner of the mold by means of a casting piston.
  • the casting piston is displaceable in a casting chamber, into which the metal to be cast is insertable, by means of a drive along the longitudinal axis of the casting chamber.
  • Such die casting machine is z.
  • the production cost of such a highly loaded casting chamber is correspondingly high.
  • the filling opening opposite surface of the casting chamber is affected and at a dosage from below, especially the transition region of the filling itself. A consequence are surface erosion, clamping the casting piston and changing the casting chamber.
  • EP-A-477119 It is also known in sand molds to provide a sprue with a heavy-duty, replaceable insert (EP-A-477119). The same describes EP-A-703027.
  • the invention has the object of providing a generic casting chamber in such a way that in comparison to the prior art, a better thermal insulation of the casting chamber is achieved.
  • the invention is based on the recognition that a heat-optimized casting chamber can be achieved by passive measures.
  • the casting chamber consists of an inner tube, on the outer surface of which an insulating layer is applied.
  • the coated inner tube is covered by a steel jacket.
  • the inner tube preferably with a wall thickness of only a few millimeters of a wear and heat-resistant steel and the outer steel shell of a cheaper tempered steel.
  • the inner tube is preferably coated with a thin ceramic layer, for example made of ZrO 2, and is preferably shrunk into the steel jacket.
  • the layer is applied by thermal spraying, eg plasma spraying.
  • a ceramic wear protection arrangement is provided in the inner tube below the filling opening for the molten metal to be cast, which is intended to prevent "washing out” of the inner wall of the inner tube
  • the wear protection arrangement can be designed as a plate or disk, for example, and closes flush with the surface of the inner tube.
  • the casting piston To the thermal benefits of a heated casting chamber, d. H. To use less pre-solidification in the casting chamber and the resulting higher component quality and lower rejects share, the casting piston must be moved at a higher temperature in the casting chamber. The temperature is adjusted so that, although a sufficiently thick ring of the melt solidifies (seal) but on the other hand, the lowest possible pre-solidification is ensured in the casting chamber. This requires the most accurate possible adjustment of the temperature of the casting piston at high cooling capacity, respectively. an intensive surface contact of the cooling medium with the casting piston.
  • the casting piston is cooled from the inside, preferably a water mist, wherein the evaporation enthalpy of the drops is used for the cooling.
  • Preference is given to a temperature below 400 0 C, so that the casting flask is maintained at a temperature below 400 0 C.
  • the temperature of the casting piston in a range of about 15O 0 C moves below 400 ° C.
  • the invention will be described below in an embodiment with reference to a drawing.
  • the drawing shows a casting chamber in section (schematized).
  • a stationary mold carrier is provided with a mold half attached thereto in a conventional manner.
  • a casting chamber 1 is arranged, in a known manner by means of a casting piston a not shown but familiar to those skilled drive and control device along the longitudinal axis of the casting chamber 1 is displaceable.
  • the metal to be cast passes via a filling opening 2 into the casting chamber 1.
  • the casting chamber 1 consists of three layers.
  • the inner layer forms an inner tube 3 with a wall thickness of a few millimeters, z. B. 5 mm, made of a high-strength steel, on the outer surface of which a thin, thermal insulation layer 4 of z. B. ZrO2 is applied.
  • the insulation layer 4 is applied by plasma spraying.
  • a ceramic wear protection ring 6 is embedded in the inner tube 3 on its opposite side.
  • the coated inner tube 3 is shrunk into a cylindrical, outer steel shell 5 made of a tempering steel.
  • the temperature of the casting chamber 1 is set to a value between 400 0 C and 700 0 C depending on the material to be cast.
  • Superheated water mist in which the temperature of the casting piston is also dependent on the material adjusted to a value between 150 ° C and 400 0 C is fed with pressure into the interior of the casting piston through a carburetor.
  • the casting piston is made of steel in combination with copper and / or titanium alloys.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Abstract

L'invention concerne une chambre de coulée (1) dans une machine à coulée sous pression, cette chambre comportant un orifice de remplissage (2) et un piston d'injection coulissant le long de l'axe longitudinal de la chambre de coulée (1). L'invention est caractérisée en ce que la chambre de coulée (1) comprend un tube interne (3) enduit d'une couche thermo-isolante, ce tube étant comprimé dans une enveloppe d'acier (5).
EP06705344A 2005-02-28 2006-02-17 Chambre de coulee Withdrawn EP1853398A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005009669A DE102005009669A1 (de) 2005-02-28 2005-02-28 Giesskammer
PCT/CH2006/000104 WO2006089442A1 (fr) 2005-02-28 2006-02-17 Chambre de coulee

Publications (1)

Publication Number Publication Date
EP1853398A1 true EP1853398A1 (fr) 2007-11-14

Family

ID=36283672

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06705344A Withdrawn EP1853398A1 (fr) 2005-02-28 2006-02-17 Chambre de coulee

Country Status (5)

Country Link
US (1) US20080277088A1 (fr)
EP (1) EP1853398A1 (fr)
JP (1) JP2008531290A (fr)
DE (1) DE102005009669A1 (fr)
WO (1) WO2006089442A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009057197B3 (de) 2009-11-30 2011-05-19 Oskar Frech Gmbh + Co. Kg Gießeinheit für eine Druckgießmaschine
DE102010041592A1 (de) * 2010-09-29 2012-03-29 Bayerische Motoren Werke Aktiengesellschaft Vorrichtung zum Einfüllen einer flüssigen Schmelze
US20130025816A1 (en) * 2011-07-29 2013-01-31 Bochiechio Mario P Die casting system and method
EP2620238A1 (fr) 2012-01-26 2013-07-31 Bühler AG Chambre de coulée pour machine de coulée sous pression
JP5763567B2 (ja) * 2012-02-09 2015-08-12 トヨタ自動車株式会社 ダイカストスリーブ
RU2618957C1 (ru) * 2015-12-08 2017-05-11 Кожокин Тимофей Иванович Камера прессования горизонтальной машины литья под давлением (ГМЛПД)
US10766068B2 (en) * 2016-02-15 2020-09-08 Hitachi Metals, Ltd. Die-casting sleeve and its production method
DE102017011321B3 (de) * 2017-12-08 2019-05-16 Wieland-Werke Ag Füllkammer für eine Druckgießmaschine

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6366555A (ja) * 1986-09-09 1988-03-25 Fuji Photo Film Co Ltd ハロゲン化銀カラ−写真感光材料の処理方法
JPH0688120B2 (ja) * 1988-10-07 1994-11-09 日本軽金属株式会社 溶融金属の射出成形スリーブ
FR2666036A1 (fr) * 1990-08-27 1992-02-28 Pont A Mousson Dispositif intermediaire pour la coulee de pieces moulees.
JP3126471B2 (ja) * 1992-03-19 2001-01-22 東京窯業株式会社 ダイカストマシン用スリーブ
JPH07214279A (ja) * 1994-02-02 1995-08-15 Ryobi Ltd ダイカストマシーン用横型スリーブ
DE20214882U1 (de) * 2002-09-25 2002-12-19 Ortmann Druckgießtechnik GmbH Gießkammern-Gießbehälter-Druckgießwerkzeuge-Formenbau, 41468 Neuss Gießkammer für das Druckgießen von Metallen
WO2004087351A1 (fr) * 2003-03-27 2004-10-14 Kubota Corporation Cylindre de piston thermiquement isolant pour machine a couler sous pression

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006089442A1 *

Also Published As

Publication number Publication date
WO2006089442A1 (fr) 2006-08-31
JP2008531290A (ja) 2008-08-14
DE102005009669A1 (de) 2006-08-31
US20080277088A1 (en) 2008-11-13

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