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WO2017114075A1 - Procédé de coulée à haute résistance - Google Patents

Procédé de coulée à haute résistance Download PDF

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Publication number
WO2017114075A1
WO2017114075A1 PCT/CN2016/107874 CN2016107874W WO2017114075A1 WO 2017114075 A1 WO2017114075 A1 WO 2017114075A1 CN 2016107874 W CN2016107874 W CN 2016107874W WO 2017114075 A1 WO2017114075 A1 WO 2017114075A1
Authority
WO
WIPO (PCT)
Prior art keywords
sand
parts
functional component
mesh
particle size
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/CN2016/107874
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English (en)
Chinese (zh)
Inventor
张建勋
侯晓翠
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of WO2017114075A1 publication Critical patent/WO2017114075A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • 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
    • B22C1/20—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

Definitions

  • the invention belongs to the field of casting technology, and in particular relates to a high strength casting molding sand.
  • modeling materials In the field of casting, in a broad sense, all materials used to make molds (including sand cores, paints, etc.) are collectively referred to as modeling materials.
  • the molds used in foundry production are sand type, metal type, ceramic type, gypsum type, graphite type, etc.
  • the most common and widely used type is sand type.
  • the castings produced by sand type account for various casting production castings. 60%-80% of the output, the 21st century calls for "green casting", protecting the environment and achieving sustainable development is our basic national policy.
  • the modeling materials play an important role in the environmental protection, green and clean production of the foundry. In the production of casting and lost foam casting, a large amount of discarded old sand will be discharged. If it cannot be recycled and reused, it will inevitably cause great pollution damage to the natural environment, thus developing a high-strength, environmentally friendly and less polluted. Modeling materials have important implications for the current state of the art.
  • the present invention discloses a high-strength casting sand, which can efficiently obtain a high-strength foundry sand type, and uses environmentally friendly materials to protect the environment and resources.
  • High-strength casting sand comprising raw sand, first functional component, second functional component, binder;
  • the raw sand includes new sand and reclaimed sand, and the mass ratio of the new sand and the reclaimed sand is (65-80): (35-20);
  • the new sand comprises 100-110 parts by weight of silica sand, 6-10 parts of zircon sand, 10-15 parts of forsterite sand, 5-7 parts of corundum sand, 3-5 parts of refractory clinker, carbonaceous sand 3 -5 servings;
  • the refractory clinker is a mixture of bauxite and coal gangue having a mass ratio of 2:1, wherein the bauxite has an alumina content of 75% and a refractoriness of more than 1850 degrees.
  • the carbonaceous sand is graphite or coke, and the particle size is 160-200 mesh.
  • the reclaimed sand has a particle size of 180-240 mesh.
  • the first functional component is a combustible material containing carbon fibers.
  • the second functional component is one or two of diatomaceous earth or attapulgite, and the particle size is 80-120 mesh, which accounts for 3-5% of the total mass of the original sand.
  • the binder is a mixture of phenolic resin, vegetable oil, tower oil, polyvinyl alcohol, and the volume ratio is (60-65): (4-6): (2: -3): (10-15).
  • the combustible material containing carbon fibers is fine wood chips and crop straws, the fine wood chips have a particle size of 160-200 mesh, and the crop straw fibers have a diameter of 4-6 mm.
  • the invention adopts a suitable content of silica sand as the main component of the original sand, reduces the production cost, and adopts zircon sand and olivine sand with small particle diameter, has small expansion coefficient, improves structural stability and good thermal conductivity.
  • the refractory degree is high, and the olivine sand also improves the acid and alkali resistance of the molding sand, the refractory clinker is loose, the refractoriness is improved, and the sand falling treatment is convenient, the reclaimed sand is used, the environmental protection is reused, and the fine-grained reclaimed sand has It is beneficial to improve the quality of the mold, and at the same time, using porous materials such as diatomaceous earth or attapulgite as the sand material, reducing the amount of refractory used and making the mold lighter, which is beneficial to environmental protection and adopts a reasonable ratio. Under the premise of ensuring the strength of the sand, the gas permeability is increased, the porosity defects of the casting are reduced, and the yield is increased.
  • High-strength casting sand comprising raw sand, first functional component, second functional component, binder;
  • the raw sand includes new sand and reclaimed sand, and the mass ratio of the new sand and the reclaimed sand is (65-80): (35-20);
  • the new sand comprises 100-110 parts by weight of silica sand, 6-10 parts of zircon sand, 10-15 parts of forsterite sand, 5-7 parts of corundum sand, 3-5 parts of refractory clinker, carbonaceous sand 3 -5 servings;
  • the silica sand has a silica content of 90%-95%, an alumina of less than 5%, a balance of unavoidable impurities, a particle size of 140-180 mesh, a compact density of 1.75 g/cm3 or more, and an average fineness. For 52-55;
  • the zirconium sand has a zirconia content of more than 70%, a silica content of less than 28%, a titanium oxide content of less than 0.3%, an iron oxide content of less than 0.12%, an alumina content of less than 0.2%, and a particle size of 240-280 meshes;
  • the olivine sand has a magnesium oxide content of 48-55%, a silica content of less than 45%, an iron oxide content of less than 8%, and a particle size of 240-280 mesh.
  • the corundum sand has an alumina content of 99-99.5% and a particle size of 140-180 mesh;
  • the refractory clinker is a mixture of bauxite and coal gangue having a mass ratio of 2:1, wherein the bauxite has an alumina content of 75% and a refractoriness of more than 1850 ° C.
  • the carbonaceous sand is graphite or coke, and the particle size is 160-200 mesh.
  • the reclaimed sand has a particle size of 180-240 mesh.
  • the first functional component is a combustible material containing carbon fibers, fine wood chips, crop straws, fine wood chips having a particle size of 160-200 mesh, and crop straw fibers having a diameter of 4-6 mm;
  • the second functional component is one or two of diatomaceous earth or attapulgite, and the particle size is 80-120 mesh, which accounts for 3-5% of the total mass of the original sand.
  • the binder is a mixture of phenolic resin, vegetable oil, tower oil, polyvinyl alcohol, and the volume ratio is (60-65): (4-6): (2: -3): (10-15).

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Mold Materials And Core Materials (AREA)

Abstract

L'invention concerne un procédé de coulée à haute résistance comprenant du sable brut, un composant fonctionnel et un liant, le sable brut comprenant du nouveau sable et du sable recyclé, et le nouveau sable comprenant, en parties en poids, de 100 à 110 parties de sable siliceux, de 6 à 10 parties de sable de zircon, de 10 à 15 parties de sable de forstérite, de 5 à 7 parties de sable de corindon, de 3 à 5 parties de mâchefer réfractaire et de 3 à 5 parties de sable carboné; le composant fonctionnel est un matériau combustible contenant une fibre de carbone et le liant est un mélange de résine phénolique, d'huile végétale, d'huile de tour et d'alcool polyvinylique; les coûts de production sont faibles, la stabilité structurale est améliorée, la conductivité thermique est bonne et la résistance au feu, aux acides et aux alcalis est élevée; la respirabilité est augmentée tout en garantissant une résistance de sable de moulage, les défauts de pores de coulée sont réduits et le rendement de produits finis est augmenté.
PCT/CN2016/107874 2015-12-30 2016-11-30 Procédé de coulée à haute résistance Ceased WO2017114075A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201511025024.3 2015-12-30
CN201511025024.3A CN105618668A (zh) 2015-12-30 2015-12-30 一种高强度铸造型砂

Publications (1)

Publication Number Publication Date
WO2017114075A1 true WO2017114075A1 (fr) 2017-07-06

Family

ID=56034225

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2016/107874 Ceased WO2017114075A1 (fr) 2015-12-30 2016-11-30 Procédé de coulée à haute résistance

Country Status (2)

Country Link
CN (1) CN105618668A (fr)
WO (1) WO2017114075A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116060576A (zh) * 2023-02-15 2023-05-05 湖北泰克摩擦材料有限公司 一种铸造型砂粘结剂及其制备方法

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CN105499497B (zh) * 2015-12-30 2018-07-27 繁峙县中兴华徳联铸有限公司 一种v法铸造工艺
CN105583365A (zh) * 2015-12-30 2016-05-18 青岛博泰美联化工技术有限公司 一种柴油发动机壳的消失模铸造方法
CN105618668A (zh) * 2015-12-30 2016-06-01 青岛博泰美联化工技术有限公司 一种高强度铸造型砂
CN105436411B (zh) * 2015-12-30 2018-08-17 青岛立准金属有限公司 一种高透气消失模铸造方法
CN105583354A (zh) * 2015-12-30 2016-05-18 青岛博泰美联化工技术有限公司 一种铸铁砂型铸造方法
CN105537516B (zh) * 2015-12-30 2018-08-24 泊头市亚奇铸业有限公司 一种柴油发动机壳砂型铸造方法
CN105458158A (zh) * 2015-12-30 2016-04-06 青岛博泰美联化工技术有限公司 一种环保铸造型砂组合物
CN105537502A (zh) * 2015-12-30 2016-05-04 青岛博泰美联化工技术有限公司 一种柴油机部件的砂型铸造方法
CN105397020A (zh) * 2015-12-30 2016-03-16 青岛博泰美联化工技术有限公司 一种透气铸造用砂
CN105618667B (zh) * 2015-12-30 2018-12-14 韶关市晟发有色金属有限公司 一种耐火铸造型砂
CN105880463A (zh) * 2016-06-20 2016-08-24 安徽宜安精密机械零部件有限公司 一种精密铸造用砂及其制备工艺
CN110465618A (zh) * 2019-09-17 2019-11-19 含山县荣盛机械铸造有限公司 一种高强度环保粘土湿型砂的制备方法
CN112517845A (zh) * 2020-12-07 2021-03-19 安徽省隆兴铸造有限公司 一种阀门铸造用砂型的制备方法及砂型
CN112872298A (zh) * 2021-01-08 2021-06-01 湖北三江航天江北机械工程有限公司 一种轻质化高强度砂芯模成型方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116060576A (zh) * 2023-02-15 2023-05-05 湖北泰克摩擦材料有限公司 一种铸造型砂粘结剂及其制备方法

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