[go: up one dir, main page]

WO2009149567A1 - Noyau perdu avec élément d'armature pour son élimination - Google Patents

Noyau perdu avec élément d'armature pour son élimination Download PDF

Info

Publication number
WO2009149567A1
WO2009149567A1 PCT/CH2009/000097 CH2009000097W WO2009149567A1 WO 2009149567 A1 WO2009149567 A1 WO 2009149567A1 CH 2009000097 W CH2009000097 W CH 2009000097W WO 2009149567 A1 WO2009149567 A1 WO 2009149567A1
Authority
WO
WIPO (PCT)
Prior art keywords
core
reinforcing element
lost
casting
cores
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.)
Ceased
Application number
PCT/CH2009/000097
Other languages
German (de)
English (en)
Inventor
Bernhard Fritsche
Sascha Padovan
Benjamin Hübsch
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
Priority claimed from DE102008002376A external-priority patent/DE102008002376A1/de
Application filed by Buehler Druckguss AG filed Critical Buehler Druckguss AG
Publication of WO2009149567A1 publication Critical patent/WO2009149567A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/10—Cores; Manufacture or installation of cores
    • B22C9/106—Vented or reinforced cores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/10—Cores; Manufacture or installation of cores
    • B22C9/105—Salt cores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D29/00—Removing castings from moulds, not restricted to casting processes covered by a single main group; Removing cores; Handling ingots
    • B22D29/001—Removing cores

Definitions

  • the invention relates to a lost core, in particular for die casting molds and its use in die casting.
  • sliders also reduces productivity because additional movements of the slider must be completed before the casting can be ejected from the mold.
  • Certain components such as Pump housings, tubular bodies and other geometries with pronounced or complex cavities must be manufactured in shell construction.
  • two or more components (shells) of the component are poured, which are then joined together by various joining methods such as gluing, pressing, riveting or welding to the finished component.
  • the molded steels from which permanent molds are made are subject to wear due to temperature changes, cavitation, erosion and corrosion. These wear parts must be replaced at great cost from time to time.
  • cooling and heating channels temperature control channels
  • a medium circulates This is to ensure that, on the one hand, the melt in the gate area remains in the liquid phase as long as possible in order to be able to effectively feed the casting by high pressure in a holding pressure phase.
  • certain parts of the casting should solidify at different speeds as quickly as possible, in order to completely avoid solidification pockets or at least to shift them to areas where they can not adversely affect the function of the casting.
  • lost cores have also been made by using inserts or by casting / sheathing / wrapping these inserts.
  • the insert serves to support the lost core and / or to fix it as a core storage around the lost core in the mold.
  • lost cores such as salt cores to reduce the aforementioned disadvantages.
  • such cores are produced by mixing a granular salt with a phosphate-containing binder and subsequent shaping in a mold.
  • EP-A-1293276 the core is connected to an insert and in USP 5165464 it is disclosed to overmould a metal core with a salt mantle.
  • the invention is based on the object of providing a lost core, in particular for die-casting molds with an extended field of use, and which is also easily removable.
  • the object is solved with the features of claim 1.
  • the lost core is provided with a "reinforcement", which can be pulled out of the core after the casting process and which is also suitable at the same time locally affecting mechanical properties of the core.
  • the core can be mechanically pre-damaged and core removal is thereby at least simplified.
  • the core may be a normal sand or salt core o. The like. And its application is not limited to die casting.
  • Wires or a wire mesh consisting of resistance conductors are introduced into the core.
  • heating wires are introduced into the core.
  • lost cores with inserted heating wires can be used as a "heat treatment device”.
  • the reinforcing wires mechanically damage the core and a heat treatment can be performed with the heat of the cores. It can locally different wall thicknesses and thus the mech. Properties are targeted locally.
  • the heating wires can also be used to achieve the necessary decomposition temperatures in the core.
  • the reinforcement can be inserted (inserted, inserted) in the form of flexible wire nets, wire nets and / or plastic nets, plastic braids, pins or other devices in lost cores.
  • the core can collapse (by means of vibration or introduction of impulses or by leaching (chemically and or physically) the core material) inwards (into the cavity created by pulling out the reinforcement). This makes it easier to remove cores from lost cores, especially in diecasting. For example, this has hitherto not always been possible with media-carrying cavities / channels with a small cross-section
  • the invention will be described below with reference to a drawing.
  • the drawing shows a core according to the invention for imaging a cavity.
  • the core 1 comprises the core material 2 and a wire mesh 3 with a pull tab 4, which protrudes from the core material.
  • the core 1 is inserted into a pressure casting mold, not shown, and after solidification of the casting, the wire mesh 3 can be pulled out of the core 1 by machine or manually. Subsequently, the core space is rinsed to completely wash out the core material 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Abstract

L'invention concerne un noyau perdu, en particulier pour les moules de coulée sous pression, par exemple les noyaux de sels ou de sable. Le noyau est fait d'un matériau de noyau (2) dans lequel est noyé un élément d'armature.
PCT/CH2009/000097 2008-06-12 2009-03-18 Noyau perdu avec élément d'armature pour son élimination Ceased WO2009149567A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008002376.0 2008-06-12
DE102008002376A DE102008002376A1 (de) 2008-02-22 2008-06-12 Verlorener Kern

Publications (1)

Publication Number Publication Date
WO2009149567A1 true WO2009149567A1 (fr) 2009-12-17

Family

ID=40732057

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH2009/000097 Ceased WO2009149567A1 (fr) 2008-06-12 2009-03-18 Noyau perdu avec élément d'armature pour son élimination

Country Status (1)

Country Link
WO (1) WO2009149567A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101987347A (zh) * 2010-09-29 2011-03-23 西安交通大学 一种发动机岐形排气管铸造用砂芯的制造方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5597844A (en) * 1979-01-17 1980-07-25 Honda Motor Co Ltd Forming method of cast-out hole
DE3144958A1 (de) * 1981-11-12 1983-05-19 Honsel-Werke Ag, 5778 Meschede "kern zum herstellen duenner kanaele in gussstuecken"
JPS63256262A (ja) * 1987-04-13 1988-10-24 Toyota Motor Corp 鋳造品の中子砂除去方法
FR2707901A1 (fr) * 1993-07-23 1995-01-27 Peugeot Procédé pour la désagrégation d'un noyau de sable de fonderie.
US20050247428A1 (en) * 2004-04-20 2005-11-10 Tenedora Nemak, S.A. De C.V. Method and apparatus for casting aluminum engine blocks with cooling liquid passage in ultra thin interliner webs

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5597844A (en) * 1979-01-17 1980-07-25 Honda Motor Co Ltd Forming method of cast-out hole
DE3144958A1 (de) * 1981-11-12 1983-05-19 Honsel-Werke Ag, 5778 Meschede "kern zum herstellen duenner kanaele in gussstuecken"
JPS63256262A (ja) * 1987-04-13 1988-10-24 Toyota Motor Corp 鋳造品の中子砂除去方法
FR2707901A1 (fr) * 1993-07-23 1995-01-27 Peugeot Procédé pour la désagrégation d'un noyau de sable de fonderie.
US20050247428A1 (en) * 2004-04-20 2005-11-10 Tenedora Nemak, S.A. De C.V. Method and apparatus for casting aluminum engine blocks with cooling liquid passage in ultra thin interliner webs

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101987347A (zh) * 2010-09-29 2011-03-23 西安交通大学 一种发动机岐形排气管铸造用砂芯的制造方法
CN101987347B (zh) * 2010-09-29 2012-07-25 西安交通大学 一种发动机歧形排气管铸造用砂芯的制造方法

Similar Documents

Publication Publication Date Title
EP3126116B1 (fr) Pièce d'insertion pour moule et procédé de moulage
DE102008002376A1 (de) Verlorener Kern
DE102007023060A1 (de) Verfahren zur Herstellung eines Zylinderkurbelgehäuses
DE102014222908A1 (de) Gussform, Einlegeteil für eine Gussform, ein Gussteil und Gussverfahren dafür
DE102009043555A1 (de) Kastenlose Gießform und Verfahren zu ihrer Herstellung
DE102010047952A1 (de) Verfahren zur Herstellung eines Gehäuses, insbesondere eines Gehäuses eines Turboladers
DE102007050124B4 (de) Gehäuse für ein Laufrad
DE102013218666A1 (de) Baugruppe und Verfahren zur Herstellung eines Kunststoffbauteils sowie Kunststoffbauteil
EP2033721B1 (fr) Procédé de fonte composite
WO2015039730A1 (fr) Pièce coulée dotée d'au moins un corps métallique poreux formé par l'intermédiaire d'un noyau de coulée
DE102014206088A1 (de) Gussform, Einlegeteil für eine Gussform, ein Gussteil und Gussverfahren dafür
DE102012108079B3 (de) Verfahren zur Herstellung hohler Salzkerne
WO2009149567A1 (fr) Noyau perdu avec élément d'armature pour son élimination
DE19636968B4 (de) Verfahren zur Herstellung von metallischen Prototypen
DE102007015051A1 (de) Kern für Druckgiessformen
DE102010011529B4 (de) Verfahren und Vorrichtung zur Herstellung von Gussbauteilen
DE102008051998A1 (de) Gießverfahren
DE102007016576A1 (de) Anreihgussform
DE102014100557A1 (de) Gießvorrichtung und Verfahren zur Herstellung eines Leichtbauteils und dessen Verwendung
WO2009140775A1 (fr) Procédé de fabrication de noyaux
DE102008001941A1 (de) Verfahren zur Herstellung von Kernen
DE102006006132A1 (de) Verfahren und Vorrichtung zum Montieren einer Gießform zum Gießen eines Gussteils aus einer Metallschmelze
DE102009024791A1 (de) Vorrichtung und Verfahren zur Herstellung eines Druckgussbauteiles
DE102022126218B3 (de) Verfahren zur Herstellung eines metallischen Hohlbauteils
DE102018127559A1 (de) Bauteil einer Brennkraftmaschine, insbesondere Zylinderkopf, Gießformanordnung und Verfahren zum Herstellen eines Bauteils einer Brennkraftmaschine

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 09761225

Country of ref document: EP

Kind code of ref document: A1

DPE1 Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101)
NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 09761225

Country of ref document: EP

Kind code of ref document: A1