WO2001098005A1 - Grillage de filtrage pour coulees d'aluminium ou d'alliage de type aluminium - Google Patents

Grillage de filtrage pour coulees d'aluminium ou d'alliage de type aluminium Download PDF

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Publication number
WO2001098005A1
WO2001098005A1 PCT/JP2001/000392 JP0100392W WO0198005A1 WO 2001098005 A1 WO2001098005 A1 WO 2001098005A1 JP 0100392 W JP0100392 W JP 0100392W WO 0198005 A1 WO0198005 A1 WO 0198005A1
Authority
WO
WIPO (PCT)
Prior art keywords
aluminum
wire mesh
film
filter
alloy
Prior art date
Application number
PCT/JP2001/000392
Other languages
English (en)
Japanese (ja)
Inventor
Hiroshi Hashizume
Yasuo Iwaki
Yoshio Okamoto
Original Assignee
Yamato Wire Netting Co., Ltd.
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 JP2000184746A external-priority patent/JP3338824B2/ja
Application filed by Yamato Wire Netting Co., Ltd. filed Critical Yamato Wire Netting Co., Ltd.
Publication of WO2001098005A1 publication Critical patent/WO2001098005A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D31/00—Cutting-off surplus material, e.g. gates; Cleaning and working on castings
    • 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
    • B22C9/086—Filters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D43/00—Mechanical cleaning, e.g. skimming of molten metals
    • B22D43/001—Retaining slag during pouring molten metal
    • B22D43/004—Retaining slag during pouring molten metal by using filtering means

Definitions

  • a filter mesh placed in a mold gate and cough to remove impurities in the molten metal solidifies from the start of molten metal injection in the production operation.
  • the shape of the wire mesh is retained, and after the assembling work, when the sprue piece containing the filter wire mesh is cut off and heated and melted in a melting furnace to reuse the AI or AI-based alloy remaining in the sprue piece,
  • the filter wire mesh is also mixed and dissolved in the molten AI or AI alloy.
  • the filter wire mesh itself can be reused as a component of the AI alloy, greatly contributing to resource saving and the eradication of industrial waste.
  • the Ni or Ni alloy film has excellent elution resistance, and can sufficiently prevent the dissolution of Cu or Cu alloy during the injection of molten metal.
  • the thickness of the Ni or Ni alloy film is not particularly limited, but is preferably from 20 to 60 jm. When the film thickness is less than 20 m, the elution resistance is insufficient, and the wire mesh shape is quickly broken and the filter function cannot be sufficiently exhibited. When the film thickness exceeds 60 j «m, the adhesion to the Cu substrate is insufficient. It is easy to peel off due to a decrease in cost, and it is also expensive.
  • the heating temperature in the air is 150 ° C. or more and 500 ° C. or less, and the heating time is 20 minutes or more and 720 minutes or less.
  • the appropriate heating temperature and heating time need to be determined according to various conditions such as the manufacturing conditions, the size of the filter mesh, and the installation position.
  • the heating temperature is lower than 150 ° C, the oxidation of Cu is insufficient, so the growth of the oxide film is small no matter how long the heating is performed, and if it exceeds 500 ° C, the oxide film formed becomes porous, and the elution resistance deteriorates.
  • the heating time is less than 20 minutes, the thickness of the oxide film is not sufficient and the surface of the wire mesh cannot be uniformly coated, and if the heating time exceeds 720 minutes, it takes too much time to form the oxide film. The efficiency becomes extremely poor.
  • the wire mesh shape can be maintained and a sufficient filter function can be exhibited even in the fabrication process on the long-time side (250 seconds to 300 seconds). I understand.
  • the immersion test was performed under low pressure, but similar results were obtained under normal pressure.
  • the adhesion of the oxide film can be measured using the sample of the wire mesh coated with the oxide film

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filtering Materials (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)

Abstract

La présente invention concerne un grillage de filtrage qui, lorsque doivent être réalisées des coulées d'Al (aluminium) ou d'alliage de type Al, est disposé sur la tige de coulée ou l'attaque de coulée afin d'éliminer les impuretés présentes dans le métal en fusion, la forme du grillage étant maintenue dès le début de la coulée du métal en fusion lors de l'opération de coulée, jusqu'à fin de solidification. Selon l'invention, lorsque la pièce de la tige de coulée qui contient le grillage de filtrage, est découpée après l'opération de coulée, et que l'Al ou l'alliage de type Al restant dans la pièce de tige de coulée, est chauffé et fondu, dans un four, pour réutilisation, le grillage de filtrage peut également être fondu et mélangé au métal en fusion d'Al ou d'alliage de type Al. Cela permet d'économiser le travail et le temps nécessaire à l'élimination de grillage de filtrage, ce qui rend possible une diminution drastique des coûts et l'augmentation de l'efficacité de fonctionnement. De plus, le grillage de filtrage pouvant lui-même être réutilisé en tant que composante de l'alliage de type Al, cela contribue dans une large mesure à l'économie des ressources et à l'élimination des déchets industriels.
PCT/JP2001/000392 2000-06-20 2001-01-22 Grillage de filtrage pour coulees d'aluminium ou d'alliage de type aluminium WO2001098005A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2000-184746 2000-06-20
JP2000184746A JP3338824B2 (ja) 1999-09-22 2000-06-20 Ａｌ又はＡｌ系合金鋳物用フィルター金網

Publications (1)

Publication Number Publication Date
WO2001098005A1 true WO2001098005A1 (fr) 2001-12-27

Family

ID=18685153

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2001/000392 WO2001098005A1 (fr) 2000-06-20 2001-01-22 Grillage de filtrage pour coulees d'aluminium ou d'alliage de type aluminium

Country Status (1)

Country Link
WO (1) WO2001098005A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4998736A (fr) * 1973-01-30 1974-09-18
JPH06269898A (ja) * 1993-03-23 1994-09-27 Nippon Light Metal Co Ltd アルミニウムおよびアルミニウム合金鋳造用フィルタ
JPH0683159U (ja) * 1991-08-28 1994-11-29 ニベックス株式会社 鋳造用フィルタ
JPH07223043A (ja) * 1994-02-15 1995-08-22 Nibetsukusu Kk 鋳造用フィルタ及びその製造方法
JPH1150227A (ja) * 1997-07-28 1999-02-23 Mitsubishi Materials Corp Ｔｉ合金またはＴｉ合金製機械部品の表面酸化膜形成方法
JPH11207437A (ja) * 1998-01-26 1999-08-03 Honda Motor Co Ltd Ａｌ系鋳物鋳造用金網スクリーン
JP2000312965A (ja) * 1999-04-27 2000-11-14 Sanken Sangyo Co Ltd ビスケット溶解分離方法およびビスケット溶解分離装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4998736A (fr) * 1973-01-30 1974-09-18
JPH0683159U (ja) * 1991-08-28 1994-11-29 ニベックス株式会社 鋳造用フィルタ
JPH06269898A (ja) * 1993-03-23 1994-09-27 Nippon Light Metal Co Ltd アルミニウムおよびアルミニウム合金鋳造用フィルタ
JPH07223043A (ja) * 1994-02-15 1995-08-22 Nibetsukusu Kk 鋳造用フィルタ及びその製造方法
JPH1150227A (ja) * 1997-07-28 1999-02-23 Mitsubishi Materials Corp Ｔｉ合金またはＴｉ合金製機械部品の表面酸化膜形成方法
JPH11207437A (ja) * 1998-01-26 1999-08-03 Honda Motor Co Ltd Ａｌ系鋳物鋳造用金網スクリーン
JP2000312965A (ja) * 1999-04-27 2000-11-14 Sanken Sangyo Co Ltd ビスケット溶解分離方法およびビスケット溶解分離装置

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