CN102728784B - Clay-type molding sand and preparation method thereof - Google Patents

Clay-type molding sand and preparation method thereof Download PDF

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Publication number
CN102728784B
CN102728784B CN201210186998.XA CN201210186998A CN102728784B CN 102728784 B CN102728784 B CN 102728784B CN 201210186998 A CN201210186998 A CN 201210186998A CN 102728784 B CN102728784 B CN 102728784B
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CN
China
Prior art keywords
sand
parts
clay
flour
molding sand
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CN201210186998.XA
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Chinese (zh)
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CN102728784A (en
Inventor
孙修财
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繁昌县琦祥铸造厂
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Priority to CN201210186998.XA priority Critical patent/CN102728784B/en
Publication of CN102728784A publication Critical patent/CN102728784A/en
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Publication of CN102728784B publication Critical patent/CN102728784B/en

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Abstract

The invention discloses a clay-type molding sand and a preparation method thereof. The method is as below: weighing raw materials of, by weight, 80-100 parts of recycling sand, 10-15 parts of chromite sand, 3-8 parts of pulverized coal, 1-3 parts of sepiolite, 10-20 parts of calcium bentonite raw ore, 1-3 parts of fine-grained magnesia, 0.5-1.5 parts of furan resin, 1-3 parts of flour, 2-4 parts of steel fiber and the balance of water; mixing the materials evenly; carrying out dry mixing for 3-5 minutes; adding water; and carrying out wet mixing for 5-8 minutes; and carrying out mold casting to obtain the clay-type molding sand. The clay-type molding sand of the invention has a reasonable formula; recycling sand can be fully utilized; usage of flour and furan resin as adhesives has merits of good cohesive force, smoothness and rapid hardening; and addition of steel fiber enhances the strength of the molding sand.

Description

A kind of clay-beaded sand and preparation method thereof
Technical field
The present invention relates to casting technology field, be specifically related to a kind of clay-beaded sand and preparation method thereof.
Background technology
The effect of molding sand in Foundry Production is very important, the casting wasted product causing because of the poor quality of molding sand accounts for 30~50% of the total waste product of foundry goods, conventionally the requirement of molding sand is had to intensity and heat endurance, mobility, plasticity, gas permeability and collapsibility, after casting solidification, whether molding sand easily destroys, the performance of whether easily removing from foundry goods.
At present, in the preparation process of molding sand, generally by fresh sand, old sand, binding agent and auxiliary material, be mixed by a certain percentage.
Summary of the invention
In order to alleviate shortcomings and deficiencies of the prior art, the object of the present invention is to provide a kind of clay-beaded sand and preparation method thereof.
The present invention adopts following technical scheme to achieve these goals:
clay-beaded sand, the weight portion of its constitutive material is: return sand 80-100, chromite sand 10-15, coal dust 3-8, sepiolite 1-3, raw ore of calcium base bentonite 10-20, particulate magnesia 1-3, furane resins 0.5-1.5, flour 1-3, steel fibre 2-4, water is appropriate.
Clay-beaded sand, the weight portion of its constitutive material is: return sand 90, chromite sand 12, coal dust 5, sepiolite 2, raw ore of calcium base bentonite 15, particulate magnesia 2, furane resins 1, flour 2, steel fibre 3, water is appropriate.
The preparation method of clay-beaded sand, comprise: by the weight portion of constitutive material, take return sand, chromite sand, coal dust, sepiolite, raw ore of calcium base bentonite, particulate magnesia, furane resins, flour and steel fibre, mix, be dry mixed 3-5 minute, add again water, wet mixing 5-8 minute.
Beneficial effect of the present invention:
Clay-beaded sand formula of the present invention is reasonable, utilizes return sand for master, can make full use of, and adopts flour, furane resins as binding agent, and cohesive force is good, smooth, and meanwhile, sclerosis is fast, increases steel fibre, is conducive to increase sand bond.
The specific embodiment
Embodiment 1: clay-beaded sand, the weight portion of its constitutive material is: return sand 80, chromite sand 10, coal dust 3, sepiolite 1, raw ore of calcium base bentonite 10, particulate magnesia 1, furane resins 0.5, flour 1, steel fibre 2, water is appropriate.
The preparation method of clay-beaded sand, comprise: by the weight portion of constitutive material, take return sand, chromite sand, coal dust, sepiolite, raw ore of calcium base bentonite, particulate magnesia, furane resins, flour and steel fibre, mix, be dry mixed 3-5 minute, add again water, wet mixing 5-8 minute, mould assembly cast obtains.
Embodiment 2: clay-beaded sand, the weight portion of its constitutive material is: return sand 90, chromite sand 12, coal dust 5, sepiolite 2, raw ore of calcium base bentonite 15, particulate magnesia 2, furane resins 1, flour 2, steel fibre 3, water is appropriate.
The preparation method of clay-beaded sand, comprise: by the weight portion of constitutive material, take return sand, chromite sand, coal dust, sepiolite, raw ore of calcium base bentonite, particulate magnesia, furane resins, flour and steel fibre, mix, be dry mixed 3-5 minute, add again water, wet mixing 5-8 minute, mould assembly cast obtains.
Embodiment 3: clay-beaded sand, the weight portion of its constitutive material is: return sand 100, chromite sand 15, coal dust 8, sepiolite 3, raw ore of calcium base bentonite 20, particulate magnesia 3, furane resins 1.5, flour 3, steel fibre 4, water is appropriate.
The preparation method of clay-beaded sand, comprise: by the weight portion of constitutive material, take return sand, chromite sand, coal dust, sepiolite, raw ore of calcium base bentonite, particulate magnesia, furane resins, flour and steel fibre, mix, be dry mixed 3-5 minute, add again water, wet mixing 5-8 minute, mould assembly cast obtains.
Clay-beaded sand performance of the present invention: gas permeability is greater than 50, green compression strength is 75-85KPA, shatter index (j :) 80-83%.

Claims (2)

1. a clay-beaded sand, the weight portion that it is characterized in that its constitutive material is: return sand 80-100, chromite sand 10-15, coal dust 3-8, sepiolite 1-3, raw ore of calcium base bentonite 10-20, particulate magnesia 1-3, furane resins 0.5-1.5, flour 1-3, steel fibre 2-4, and water is appropriate;
The preparation method of described clay-beaded sand, comprises the following steps:
By the weight portion of constitutive material, take return sand, chromite sand, coal dust, sepiolite, raw ore of calcium base bentonite, particulate magnesia, furane resins, flour and steel fibre, mix, be dry mixed 3-5 minute, then add water, wet mixing 5-8 minute.
2. clay-beaded sand according to claim 1, the weight portion that it is characterized in that its constitutive material is: return sand 90, chromite sand 12, coal dust 5, sepiolite 2, raw ore of calcium base bentonite 15, particulate magnesia 2, furane resins 1, flour 2, steel fibre 3, water is appropriate.
CN201210186998.XA 2012-06-08 2012-06-08 Clay-type molding sand and preparation method thereof CN102728784B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210186998.XA CN102728784B (en) 2012-06-08 2012-06-08 Clay-type molding sand and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210186998.XA CN102728784B (en) 2012-06-08 2012-06-08 Clay-type molding sand and preparation method thereof

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CN102728784A CN102728784A (en) 2012-10-17
CN102728784B true CN102728784B (en) 2014-03-12

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Publication number Priority date Publication date Assignee Title
CN103521685A (en) * 2013-10-16 2014-01-22 合肥市田源精铸有限公司 Modified sand of nano sepiolite, and preparation method thereof
CN103521694A (en) * 2013-10-16 2014-01-22 合肥市田源精铸有限公司 Sepiolite molding sand and preparation method thereof
CN104174809B (en) * 2014-08-22 2016-07-06 合肥江淮铸造有限责任公司 A kind of recyclable good permeability casting sand and preparation method thereof
CN104226889B (en) * 2014-09-24 2017-02-15 西峡县西泵特种铸造有限公司 Casting molding sand with regenerated dedusting ash and preparation technology of casting molding sand
CN104475652A (en) * 2014-11-03 2015-04-01 繁昌县琦祥铸造厂 Anti-shakeout molding sand and preparation method thereof
CN104493069A (en) * 2014-11-26 2015-04-08 马鞍山市恒达耐磨材料有限责任公司 Molding sand for miniature cast steel members and preparation method thereof
CN104475662A (en) * 2014-12-01 2015-04-01 昌利锻造有限公司 Molding sand for magnesium alloy castings and preparation method of molding sand
CN104646599A (en) * 2015-01-22 2015-05-27 安徽省繁昌县皖南阀门铸造有限公司 Heat-resisting molding sand with high bonding performance and preparation method thereof
CN105537504A (en) * 2016-02-15 2016-05-04 芜湖市金贸流体科技股份有限公司 Clay green sand applied to carbon steel castings and preparation method of clay green sand
CN105964885A (en) * 2016-03-10 2016-09-28 繁昌县琪鑫铸造有限公司 Ball clay molding sand used for ball-milling iron cast and preparing method thereof
CN110076285B (en) * 2019-04-26 2020-11-17 西安工业大学 High-temperature-resistant anti-deformation sand core material and preparation method thereof

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Application publication date: 20121017

Assignee: FANCHANG COUNTY TIANHE MACHINERY CO., LTD.

Assignor: Fanchang Qixiang Casting Factory

Contract record no.: 2014340000137

Denomination of invention: Clay-type molding sand and preparation method thereof

Granted publication date: 20140312

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Record date: 20140703

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