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EP3478427A1 - Particules c ur-écorce destinées à être utilisées comme charge dans des matières pour masselottes - Google Patents

Particules c ur-écorce destinées à être utilisées comme charge dans des matières pour masselottes

Info

Publication number
EP3478427A1
EP3478427A1 EP17737503.7A EP17737503A EP3478427A1 EP 3478427 A1 EP3478427 A1 EP 3478427A1 EP 17737503 A EP17737503 A EP 17737503A EP 3478427 A1 EP3478427 A1 EP 3478427A1
Authority
EP
European Patent Office
Prior art keywords
core
particles
shell particles
value
feeder
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.)
Pending
Application number
EP17737503.7A
Other languages
German (de)
English (en)
Inventor
Sandra LEHMANN
Klaus Riemann
Nils Zimmer
Hermann Lieber
Jürgen HÜBERT
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.)
Huettenes Albertus Chemische Werke GmbH
Original Assignee
Huettenes Albertus Chemische Werke 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 Huettenes Albertus Chemische Werke GmbH filed Critical Huettenes Albertus Chemische Werke GmbH
Publication of EP3478427A1 publication Critical patent/EP3478427A1/fr
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
    • 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
    • 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
    • B22C1/02—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by additives for special purposes, e.g. indicators, breakdown additives
    • 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
    • B22C1/18—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 inorganic agents
    • 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

Definitions

  • feeder includes both feeder shells, feeder inserts and feeder caps, and heating pads.
  • hollow spheres are often used today, originating from the fly ash of coal-fired power plants.
  • these hollow spheres suitable for use in feeders are not available without restriction in the necessary qualities.
  • the use of synthetic hollow spheres is possible.
  • these often do not have the required properties in order to achieve good insulating properties in the finished feeder. It was therefore the object of the present invention to provide a lightweight filler, which can be used as a replacement for the currently favored hollow spheres.
  • core-shell particles for use as a filler for feeder masses for the production of feeders, comprising
  • core-shell particles having a d10 value in the range of 0.30 mm to 0.40 mm and a d90 value in the range of 0.50 mm to 0.60 mm, it is particularly preferred if the core-shell particles have a mean particle size d50 of 0.4 mm to 0.5 mm, preferably a mean particle size d50 of 0.42 mm to 0.47 mm, more preferably a mean particle size d50 of 0.44 to 0.46 mm.
  • cores (a) each having one or more cavities and a wall enclosing these cavities the cores (a) having a d50 value in the range of 0.15 to 0.45 mm,
  • the core-shell particles prepared according to Embodiment 3 are homogeneously mixed with cold box binder (Hüttenes-Albertus: benzyl ether resin based on activator 6324 / gas resin 7241 with a ratio of activator 6324: gas resin 7241 of 1: 1). From the resulting mixture, feeder caps and other profile tablets (a) are stamped and (b) shot with core shooters (e.g., Röper, Laempe). Curing takes place in each case by gassing with dimethylpropylamine.
  • Comparative Example 3 (not according to the invention)
  • the core-shell particles prepared according to Comparative Example 1 are mixed with cold box binder (Hüttenes-Albertus: benzyl ether resin based on activator 6324 / gas resin 7241 with a ratio of activator 6324: gas resin 7241 from FIG : 1) homogeneously mixed. From the resulting mixture feeder caps and other profile moldings (a) are stamped and (b) shot with core shooting machines (eg Röper, Laempe). Curing takes place in each case by gassing with dimethylpropylamine. Comparative Example 4 (not according to the invention)
  • a safer density feed could be proven for all embodiments.
  • an improved cupping behavior was determined compared to the comparative examples.
  • the determined voids depths are shown in the following table.
  • a negative void depth value means that the void is at least partially in the casting, while a positive void depth value means that the void is formed in the respective residue vaporizer.
  • the corresponding cube castings with residual feeders are shown in Figures 4 to 8.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Mold Materials And Core Materials (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Oxygen, Ozone, And Oxides In General (AREA)
  • Inorganic Insulating Materials (AREA)
  • Glanulating (AREA)

Abstract

L'invention concerne des particules cœur-écorce destinées à être utilisées comme charge dans des matières pour masselottes pour la fabrication de masselottes, comprenant (a) un cœur qui comporte une ou plusieurs cavités et une paroi entourant ces cavités, le cœur (a) présentant un diamètre moyen dans la plage de 0, 15 à 0,45 mm, (b) une écorce entourant le cœur et constituée de, ou comprenant des, (b1) particules comportant un matériau du groupe constitué par le kaolin calciné ou la cordiérite, ou constituées de ce matériau, les particules (b1) présentant un indice granulométrique d10 d'au minimum 0,05 μm et un indice granulométrique d90 d'au maximum 45 μm et (b2) comprenant un liant qui lie les particules (b1) les unes aux autres et au cœur (a).
EP17737503.7A 2016-06-30 2017-06-27 Particules c ur-écorce destinées à être utilisées comme charge dans des matières pour masselottes Pending EP3478427A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016211948.6A DE102016211948A1 (de) 2016-06-30 2016-06-30 Kern-Hülle-Partikel zur Verwendung als Füllstoff für Speisermassen
PCT/EP2017/065812 WO2018002027A1 (fr) 2016-06-30 2017-06-27 Particules cœur-écorce destinées à être utilisées comme charge dans des matières pour masselottes

Publications (1)

Publication Number Publication Date
EP3478427A1 true EP3478427A1 (fr) 2019-05-08

Family

ID=59313207

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17737503.7A Pending EP3478427A1 (fr) 2016-06-30 2017-06-27 Particules c ur-écorce destinées à être utilisées comme charge dans des matières pour masselottes

Country Status (10)

Country Link
US (1) US10864574B2 (fr)
EP (1) EP3478427A1 (fr)
JP (1) JP7004681B2 (fr)
KR (1) KR102267824B1 (fr)
CN (2) CN114535496A (fr)
BR (1) BR112018077220B1 (fr)
DE (1) DE102016211948A1 (fr)
EA (1) EA035631B1 (fr)
MX (1) MX2018015862A (fr)
WO (1) WO2018002027A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110217987A (zh) * 2019-06-18 2019-09-10 陈彦霖 一种超轻质惰性球形保护剂及其制备方法
WO2021015580A1 (fr) * 2019-07-23 2021-01-28 한양대학교에리카산학협력단 Matériau composite à dissipation thermique, et procédé de fabrication associé
JP7062746B2 (ja) 2019-12-31 2022-05-06 財團法人工業技術研究院 低誘電率材料、および、その製造方法
CN112958745A (zh) * 2021-03-01 2021-06-15 曲阜市铸造材料厂 一种改性水玻璃砂在铸铁应用中的制备方法
CN114105658B (zh) * 2021-11-30 2023-02-28 河南通宇冶材集团有限公司 一种无碳引流剂及其制备方法
DE102022105961A1 (de) 2022-03-15 2023-09-21 Ks Huayu Alutech Gmbh Verfahren zur Herstellung eines Formkerns oder Speisers zur Erzeugung von Hohlräumen in Gussstücken

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WO2006058347A2 (fr) * 2004-11-25 2006-06-01 Alistair Allardyce Elrick Bille resistant a la chaleur

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GB9308363D0 (en) 1993-04-22 1993-06-09 Foseco Int Refractory compositions for use in the casting of metals
BR9601454C1 (pt) 1996-03-25 2000-01-18 Paulo Roberto Menon Processo para produção de luvas exotérmicas e isolantes.
ES2134729B1 (es) 1996-07-18 2000-05-16 Kemen Recupac Sa Mejoras introducidas en objeto solicitud patente invencion española n. 9601607 por "procedimiento para fabricacion manguitos exactos y otros elementos de mazarotaje y alimentacion para moldes de fundicion, incluyendo la formulacion para obtencion de dichos manguitos y elementos".
DE19925115A1 (de) 1999-06-01 2000-12-07 Huettenes Albertus Bindemittelsystem für Formstoff-Mischungen zur Herstellung von Formen und Kernen
DE10104289B4 (de) * 2001-01-30 2004-11-11 Chemex Gmbh Formbare exotherme Zusammensetzungen und Speiser daraus
CA2440870A1 (fr) * 2001-03-14 2002-09-19 Sekisui Chemical Co., Ltd. Particules polymeres creuses, procede de production desdites particules, filtre ceramique poreux et procede de fabrication dudit filtre
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Also Published As

Publication number Publication date
WO2018002027A1 (fr) 2018-01-04
JP2019519379A (ja) 2019-07-11
DE102016211948A1 (de) 2018-01-04
BR112018077220B1 (pt) 2022-10-25
KR102267824B1 (ko) 2021-06-23
EA201990168A1 (ru) 2019-06-28
MX2018015862A (es) 2019-07-08
JP7004681B2 (ja) 2022-02-04
KR20190022849A (ko) 2019-03-06
CN114535496A (zh) 2022-05-27
BR112018077220A2 (pt) 2019-04-09
EA035631B1 (ru) 2020-07-17
CN109475927A (zh) 2019-03-15
US20190201970A1 (en) 2019-07-04
US10864574B2 (en) 2020-12-15

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