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EP1752235B1 - Procédé de fabrication de noyau de coulée ou de moule - Google Patents

Procédé de fabrication de noyau de coulée ou de moule Download PDF

Info

Publication number
EP1752235B1
EP1752235B1 EP05017698A EP05017698A EP1752235B1 EP 1752235 B1 EP1752235 B1 EP 1752235B1 EP 05017698 A EP05017698 A EP 05017698A EP 05017698 A EP05017698 A EP 05017698A EP 1752235 B1 EP1752235 B1 EP 1752235B1
Authority
EP
European Patent Office
Prior art keywords
binder
core
sand
casting
molds
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.)
Expired - Lifetime
Application number
EP05017698A
Other languages
German (de)
English (en)
Other versions
EP1752235A1 (fr
Inventor
Wolfram Seiterle
Artur Bissert
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.)
Georg Fischer Automobilguss GmbH Germany
Original Assignee
Georg Fischer Automobilguss GmbH Germany
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 to PT05017698T priority Critical patent/PT1752235E/pt
Application filed by Georg Fischer Automobilguss GmbH Germany filed Critical Georg Fischer Automobilguss GmbH Germany
Priority to DK05017698T priority patent/DK1752235T3/da
Priority to EP05017698A priority patent/EP1752235B1/fr
Priority to ES05017698T priority patent/ES2303161T3/es
Priority to SI200530257T priority patent/SI1752235T1/sl
Priority to AT05017698T priority patent/ATE394185T1/de
Priority to DE502005004015T priority patent/DE502005004015D1/de
Priority to AU2006281745A priority patent/AU2006281745B2/en
Priority to BRPI0614778-0A priority patent/BRPI0614778B1/pt
Priority to JP2008525398A priority patent/JP4820413B2/ja
Priority to RU2008109321/02A priority patent/RU2442673C2/ru
Priority to PCT/EP2006/004821 priority patent/WO2007019898A1/fr
Priority to CA2617948A priority patent/CA2617948C/fr
Priority to MX2007015598A priority patent/MX2007015598A/es
Priority to CN200680029319.0A priority patent/CN101287561B/zh
Publication of EP1752235A1 publication Critical patent/EP1752235A1/fr
Priority to ZA200711019A priority patent/ZA200711019B/xx
Priority to US12/029,487 priority patent/US8058325B2/en
Application granted granted Critical
Publication of EP1752235B1 publication Critical patent/EP1752235B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B22C1/16—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents
    • B22C1/20—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents
    • B22C1/26—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents of carbohydrates; of distillation residues therefrom

Definitions

  • the invention relates to a process for the production of casting cores or molds for casting molds from a molding base material and a binder and casting cores or molds after production of the process.
  • Cast cores have the task of forming cavities in the casting or undercut outer contours.
  • This type of Giesskernen be prepared in known manner in core boxes by means of core shooting equipment, wherein the molding sand provided with binder and optionally with additives is introduced by means of compressed air into the cavities of the core molding boxes.
  • binders liquid synthetic resins or inorganic binders are generally used.
  • the invention relates to all organic and inorganic molding and core production processes, preferably to the urethane cold box process and / or the resol CO 2 process. Also conceivable are physical methods, for example ultrasonic methods.
  • the core production after the urethane cold box takes place in cold core boxes using organic binder systems, which are gas-hardened directly in the core box, for example by tertiary amines.
  • the solidification of the molding material mixture eg quartz sand, organic bonding system, hardener
  • the mixing of the individual components takes place beforehand in special facilities.
  • One advantage of this urethane cold box process is, among others, the achievement of high strengths of the cores or molds.
  • the finished cores can be used uncoated, or coated with a sizing. Finishes are refractory materials in powdery, liquid or pasty form for producing a thin coating on the casting cores.
  • the sizing has several tasks. Among others, the sizing is for thermal insulation, smoothing, preventing sticking of metal to the mold wall, blade rib formation, and thus ensuring a secure separation of the casting from the mold wall when the mold is emptied.
  • the casting cores are removed from the casting.
  • the Giesskerne are removed, for example, by blasting, vibration, blowing, knocking or washing.
  • the DE 102 27 512 A1 discloses such a process based on a mold base material comprising phenolic resin and isocyanate, wherein a pore-forming substance is added to the molding base.
  • the DE 195 49 469 A1 describes a Giesskern for casting from solidified by means of a water-soluble binder based on polyphosphates molding sand, the binder is instantiated sodium polyphosphate and that a mixing ratio of 3 to 7 parts by weight of binder and 0.5 to 2 parts by weight of water per 100 parts by weight of molding sand is given.
  • the DE 199 14 586 A1 discloses a resin-based binder for the production of foundry sands for use in the foundry industry.
  • the binder mixture for core sand production consists of a single component (single resin) or a mixture of one or more individual components (resin mixture) with additives.
  • the invention has for its object to produce unglazed cores / molds with a suitable casting surface in the core area and to extend the life of the sand in the core production. Furthermore, the closing of the sand mixer and sand funnel over the core shooting machines should be prevented.
  • the addition of commercial powdered sugar extends the life of the sand, i.
  • the sand can be processed longer, without the mechanical values of the manufactured cores taking an unfavorable course.
  • powdered sugar forms lustrous carbon during casting and thus a smooth surface in the core area.
  • Another preferred measure is the addition of dye.
  • the machinist can see if there is any additive in the core sand mixture.
  • the metering unit of the sand mixer can be monitored by the addition.
  • the binder is composed in the ratio 1: 1 of a phenolic resin and an isocyanate component, wherein both binder components are added simultaneously or sequentially in the molding material and then mixed.
  • the powdered sugar and / or the dye is mixed into the sand so that a homogeneous mixture is formed.
  • composition of the mixture of quartz sand and binder for the inventive production method 100% Parts by weight of quartz sand 0.5 - 0.8% Parts by weight of resin (for example phenolic resin) 0.5 - 0.8% Parts by weight activator (for example isocyanate) 1.0 - 2.0% Parts by weight of additive according to the invention (pore-forming substance, powdered sugar and dye-containing)
  • resin for example phenolic resin
  • activator for example isocyanate
  • the proportions by weight of resin and isocyanate can be between 0.5% and 0.8%, depending on the desired strength of the casting cores.
  • resin and isocyanate are used in equal amounts, i. H. in the ratio 1: 1 added.
  • Example of a composition of the additive according to the invention 100% porous material 1.0% -10% commercial powdered sugar with a grain size ⁇ 1 mm 1.0% - 5.0% Dye (for example Hostaperm B4G-KR or E131 Patent Blue)
  • the inventive additive is usually added in the amount of 1% to 2% by weight.

Landscapes

  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • General Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Mold Materials And Core Materials (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Casting Devices For Molds (AREA)
  • Epoxy Resins (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)
  • Polyesters Or Polycarbonates (AREA)

Claims (3)

  1. Procédé de fabrication de noyaux de coulée ou de moules en une matière pour moule à base d'une matière première de moule et de liants organiques ou minéraux, une substance de formation de pores étant ajoutée à la matière de moules et/ou au liant, caractérisé en ce que la matière de formation de moules est une poudre de sucre en grains plus petits que 1 mm.
  2. Procédé selon la revendication 1, caractérisé en ce que le liant est constitué d'un rapport variable d'un composant fait de résine phénolique et d'un composant isocyanate, les deux composants du liant étant ajoutés en même temps dans le sable de quartz et ensuite mélangés.
  3. Procédé selon les revendications 1 ou 2, caractérisé en ce que la poudre de sucre est mélangée de manière à obtenir un mélange homogène.
EP05017698A 2005-08-13 2005-08-13 Procédé de fabrication de noyau de coulée ou de moule Expired - Lifetime EP1752235B1 (fr)

Priority Applications (17)

Application Number Priority Date Filing Date Title
DK05017698T DK1752235T3 (da) 2005-08-13 2005-08-13 Fremgangsmåde til fremstilling stöbekerner eller forme
EP05017698A EP1752235B1 (fr) 2005-08-13 2005-08-13 Procédé de fabrication de noyau de coulée ou de moule
ES05017698T ES2303161T3 (es) 2005-08-13 2005-08-13 Procedimiento para la produccion de machos de colada o moldes.
SI200530257T SI1752235T1 (sl) 2005-08-13 2005-08-13 Postopek za pripravo ulivalnih jeder ali form
AT05017698T ATE394185T1 (de) 2005-08-13 2005-08-13 Verfahren zur herstellung von giesskernnen oder formen
DE502005004015T DE502005004015D1 (de) 2005-08-13 2005-08-13 Verfahren zur Herstellung von Giesskernnen oder Formen
PT05017698T PT1752235E (pt) 2005-08-13 2005-08-13 Material para machos de fundição
CN200680029319.0A CN101287561B (zh) 2005-08-13 2006-05-22 用于由造型材料制造铸造型芯或模具的方法
AU2006281745A AU2006281745B2 (en) 2005-08-13 2006-05-22 Casting core mass
RU2008109321/02A RU2442673C2 (ru) 2005-08-13 2006-05-22 Способ получения литейных стержней или форм
PCT/EP2006/004821 WO2007019898A1 (fr) 2005-08-13 2006-05-22 Masse pour noyaux de coulee
CA2617948A CA2617948C (fr) 2005-08-13 2006-05-22 Masse pour noyaux de coulee
MX2007015598A MX2007015598A (es) 2005-08-13 2006-05-22 Masa de nucleo de fundicion.
BRPI0614778-0A BRPI0614778B1 (pt) 2005-08-13 2006-05-22 Processo para a preparação de machos ou moldes de fundição a partir de um material para moldagem
JP2008525398A JP4820413B2 (ja) 2005-08-13 2006-05-22 キャスティングコアまたはキャスティングモールドの生産方法
ZA200711019A ZA200711019B (en) 2005-08-13 2007-12-19 Casting core mass
US12/029,487 US8058325B2 (en) 2005-08-13 2008-02-12 Process for producing a casting mold

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05017698A EP1752235B1 (fr) 2005-08-13 2005-08-13 Procédé de fabrication de noyau de coulée ou de moule

Publications (2)

Publication Number Publication Date
EP1752235A1 EP1752235A1 (fr) 2007-02-14
EP1752235B1 true EP1752235B1 (fr) 2008-05-07

Family

ID=35883801

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05017698A Expired - Lifetime EP1752235B1 (fr) 2005-08-13 2005-08-13 Procédé de fabrication de noyau de coulée ou de moule

Country Status (17)

Country Link
US (1) US8058325B2 (fr)
EP (1) EP1752235B1 (fr)
JP (1) JP4820413B2 (fr)
CN (1) CN101287561B (fr)
AT (1) ATE394185T1 (fr)
AU (1) AU2006281745B2 (fr)
BR (1) BRPI0614778B1 (fr)
CA (1) CA2617948C (fr)
DE (1) DE502005004015D1 (fr)
DK (1) DK1752235T3 (fr)
ES (1) ES2303161T3 (fr)
MX (1) MX2007015598A (fr)
PT (1) PT1752235E (fr)
RU (1) RU2442673C2 (fr)
SI (1) SI1752235T1 (fr)
WO (1) WO2007019898A1 (fr)
ZA (1) ZA200711019B (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010018751B4 (de) * 2010-04-29 2015-08-13 Laempe & Mössner GmbH Verfahren und Vorrichtung zur Herstellung von Formen oder Kernen insbesondere für Gießereizwecke
DE102010051567A1 (de) * 2010-11-18 2012-05-24 Ashland-Südchemie-Kernfest GmbH Bindemittel auf Polyurethanbasis zur Herstellung von Kernen und Gießformen unter Verwendung von Isocyanaten enthaltend eine Urethonimin- und/oder Carbodiimid-Gruppe, eine Formstoffmischung enthaltend das Bindemittel und ein Verfahren unter Verwendung des Bindemittels
MX2021007259A (es) * 2018-12-20 2021-07-15 Proionic Gmbh Composicion de moldeo que comprende un componente de azucar.

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3124547A (en) * 1964-03-10 Process of contacting a microporous
US2145317A (en) * 1935-01-17 1939-01-31 Borden Co Foundry core binder
US3062760A (en) * 1959-10-06 1962-11-06 Electric Storage Battery Co Method of producing a microporous polymeric resin
GB1051320A (en) * 1964-01-13 1966-12-14 W.R. Grace & Co. Micro-porous polyethylene and a process for the manufacture thereof
DE1255239B (de) * 1965-04-01 1967-11-30 Adalbert Wittmoser Dr Ing Formmasse zur Herstellung von Giessformen
FR1515784A (fr) * 1966-03-30 1968-03-01 Procédé de moulage à cire perdue
US3375208A (en) * 1967-07-26 1968-03-26 Esb Inc Method for preparing a microporous thermoplastic resin material
DE2638042A1 (de) * 1975-09-17 1977-03-24 Fischer Ag Georg Verfahren zur behandlung poroeser, koerniger grundstoffe, insbesondere zur herstellung von giessereisanden
US4396430A (en) * 1981-02-04 1983-08-02 Ralph Matalon Novel foundry sand binding compositions
US4426462A (en) * 1982-07-27 1984-01-17 Dynamit Nobel Ag Method for the preparation of highly absorbent phenolic resin foams
JPS63174752A (ja) * 1987-01-14 1988-07-19 Sadaji Nagabori 無塗型鋳造に適した鋳物用砂型または中子の連続式製造方法および製造装置
CN1008698B (zh) * 1988-06-23 1990-07-11 铁道部戚墅堰机车车辆工艺研究所 硅酸盐砂的添加剂
CN1097661A (zh) * 1993-07-17 1995-01-25 罗端权 新型铸造粘结剂及其制造方法
DE19525307C2 (de) 1995-07-12 2003-04-03 Eichenauer Gmbh & Co Kg F Formmasse zur Herstellung von Gießkernen und Verfahren zur Herstellung eines Gießkerns
DE19549469C2 (de) 1995-07-12 1999-05-12 Eichenauer Gmbh & Co Kg F Gießkern zum Gießformen und Verfahren zum Herstellen eines solchen Gießkerns
US6013125A (en) * 1995-09-13 2000-01-11 Quraishi; Mashallah M. Investment of powders and method for rapid preparation of investment molds
RU2086341C1 (ru) * 1995-10-10 1997-08-10 Челябинский государственный технический университет Способ изготовления литейных стержней и форм по холодной оснастке
US6139619A (en) * 1996-02-29 2000-10-31 Borden Chemical, Inc. Binders for cores and molds
US6703057B2 (en) * 1996-07-13 2004-03-09 Parnova Enterprises Limited Granulated sugar product
DE19647368A1 (de) * 1996-11-15 1998-05-20 Inst Neue Mat Gemein Gmbh Verbundwerkstoffe
GB9624340D0 (en) * 1996-11-22 1997-01-08 Foseco Int Sand reclamation
DE19914586A1 (de) 1999-03-31 2000-10-05 Bi Vt Gmbh Bindemittel Verfahr Neuartige Bindemittel auf Harzbasis zur Herstellung von Gießereisanden zur Verwendung im Gießereiwesen
DE10227512B4 (de) 2002-06-19 2004-07-08 Georg Fischer Gmbh & Co.Kg Verfahren zur Herstellung von Giesskernen oder Formen, sowie nach diesem Verfahren hergestellte Giesskerne oder Formen

Also Published As

Publication number Publication date
ES2303161T3 (es) 2008-08-01
DE502005004015D1 (de) 2008-06-19
SI1752235T1 (sl) 2008-08-31
ZA200711019B (en) 2008-11-26
US20080190320A1 (en) 2008-08-14
RU2008109321A (ru) 2009-09-20
EP1752235A1 (fr) 2007-02-14
CA2617948A1 (fr) 2007-02-22
WO2007019898A1 (fr) 2007-02-22
MX2007015598A (es) 2008-04-09
DK1752235T3 (da) 2008-08-25
RU2442673C2 (ru) 2012-02-20
AU2006281745B2 (en) 2010-10-28
CN101287561B (zh) 2014-02-19
ATE394185T1 (de) 2008-05-15
JP2009504406A (ja) 2009-02-05
BRPI0614778B1 (pt) 2015-01-06
CN101287561A (zh) 2008-10-15
JP4820413B2 (ja) 2011-11-24
PT1752235E (pt) 2008-08-20
US8058325B2 (en) 2011-11-15
CA2617948C (fr) 2011-11-08
AU2006281745A1 (en) 2007-02-22
BRPI0614778A2 (pt) 2011-04-12

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