CN104174809B - A kind of recyclable good permeability casting sand and preparation method thereof - Google Patents
A kind of recyclable good permeability casting sand and preparation method thereof Download PDFInfo
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- CN104174809B CN104174809B CN201410416627.5A CN201410416627A CN104174809B CN 104174809 B CN104174809 B CN 104174809B CN 201410416627 A CN201410416627 A CN 201410416627A CN 104174809 B CN104174809 B CN 104174809B
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Abstract
A kind of recyclable good permeability casting sand, it is characterised in that be made up of the raw material of following weight portion: old sand 2280-2400, fresh sand 80-120, bentonite 16-24, clay 100-120, furane resins 40-45, coal dust 16-20, poly alkylene glycol 4-5, phosphoric acid 5-6, tall oil 3-5, cationic starch 2-3, artemisia glue 3-5, Modified Quartz Sand 100-120, water are appropriate；Type of the present invention, by using clay, through pelletize, adds type sand permeability, decreases the generation of bleb, and can recycle；By using Modified Quartz Sand, adding dispersibility and the lubricity of molding sand, plasticity is good, casting dimension good stability；Molding sand wet strength of the present invention is high, and high temperature collapsibility is good, easily reclaims, and casting yield is high, is suitable for large-scale industrial production.
Description
Technical field
The present invention relates to casting field, particularly relate to a kind of recyclable good permeability casting sand and preparation method thereof.
Background technology
Molding sand is the material in casting for moulding.Molding sand is generally mixed according to a certain percentage by Modeling Materials such as Foundry sand, moulding sand binder and additional things, it is also possible to natural silica sand argillaceous.The recyclability of current molding sand is bad, and the sand serviceability of recovery is bad, also has breathability bad, and foundry goods easily has pore；Having is exactly poor dispersion again, and sand Boardy Feeling, molding is perishable；Also the molding sand plasticity having is good, wet strength is high, but the phenomenon such as sand bean is many, and collapsibility is bad, it is necessary to improve.
Summary of the invention
It is an object of the invention to provide a kind of recyclable good permeability casting sand and preparation method thereof, this sand permeability is good, decrease the generation of bleb, and can recycle, the dispersibility of molding sand and lubricity, plasticity is good, casting dimension good stability, molding sand wet strength is high, and high temperature collapsibility is good.
Technical scheme is as follows:
A kind of recyclable good permeability casting sand, it is characterised in that be made up of the raw material of following weight portion: old sand 2280-2400, fresh sand 80-120, bentonite 16-24, clay 100-120, furane resins 40-45, coal dust 16-20, poly alkylene glycol 4-5, phosphoric acid 5-6, tall oil 3-5, cationic starch 2-3, artemisia glue 3-5, Modified Quartz Sand 100-120, water are appropriate；
Described Modified Quartz Sand is made up of the raw material of following weight portion: quartz sand 90-100, stearic acid 1-2, liquid paraffin 3-5, graphene oxide 8-10, glass hollow microsphere 4-6, magnesium stearate 1-2, polyamide wax micropowder 2-3, castor oil acid polyester 2-3, vaseline 2-3；Preparation method is: quartz sand is sent into calcining furnace, and at 1850-1950 DEG C, calcining fusing, is ground into the granule that particle diameter is 0.5-2mm, adds other residual componentss, grind 30-40 minute, to obtain final product.
The preparation method of described recyclable good permeability casting sand, it is characterised in that comprise the following steps:
(1) being pulverized by clay, add the water mix homogeneously being equivalent to clay weight 7-9%, pelletize, particle diameter, at 0.5-2mm, sends into calcining furnace, sinters at 800-1000 DEG C, takes out, is polishing to surface roughness≤0.2mm, obtains clay particle；
(2) by bentonite, furane resins, coal dust, poly alkylene glycol, tall oil, cationic starch, artemisia glue mixing, add water and stir into the slurry that solid content is 40-50%, add phosphoric acid, then grind to form 30-70 order slurry；
(3) other residual componentss being mixed, add the clay particle that obtains of (1st) step, slurry that (2nd) step obtains, grinding distribution is uniform, to obtain final product.
Beneficial effects of the present invention
By the present invention in that with clay, through pelletize, add type sand permeability, decrease the generation of bleb, and can recycle；By using Modified Quartz Sand, adding dispersibility and the lubricity of molding sand, plasticity is good, casting dimension good stability；Molding sand wet strength of the present invention is high, and high temperature collapsibility is good, easily reclaims, and casting yield is high, is suitable for large-scale industrial production.
Detailed description of the invention
A kind of recyclable good permeability casting sand, is made up of the raw material of following weight portion (kilogram): old sand 2300, fresh sand 90, bentonite 20, clay 110, furane resins 43, coal dust 18, poly alkylene glycol 4.5, phosphoric acid 5.5, tall oil 4, cationic starch 2.5, artemisia glue 4, Modified Quartz Sand 110, water are appropriate；
Described Modified Quartz Sand is made up of the raw material of following weight portion (kilogram): quartz sand 95, stearic acid 1.5, liquid paraffin 4, graphene oxide 9, glass hollow microsphere 5, magnesium stearate 1.5, polyamide wax micropowder 2.5, castor oil acid polyester 2.5, vaseline 2.5；Preparation method is: quartz sand is sent into calcining furnace, and at 1900 DEG C, calcining fusing, is ground into the granule that particle diameter is 0.5-2mm, adds other residual componentss, grind 35 minutes, to obtain final product.
The preparation method of described recyclable good permeability casting sand, comprises the following steps:
(1) being pulverized by clay, add the water mix homogeneously being equivalent to clay weight 8%, pelletize, particle diameter, at 0.5-2mm, sends into calcining furnace, sinters at 900 DEG C, takes out, is polishing to surface roughness≤0.2mm, obtains clay particle；
(2) by bentonite, furane resins, coal dust, poly alkylene glycol, tall oil, cationic starch, artemisia glue mixing, add water and stir into the slurry that solid content is 45%, add phosphoric acid, then grind to form 30-70 order slurry；
(3) other residual componentss being mixed, add the clay particle that obtains of (1st) step, slurry that (2nd) step obtains, grinding distribution is uniform, to obtain final product.
The sand test data that the present embodiment obtains are as follows: green compression strength is 160KPa, breathability 140, and hot green tensile strength is 3KPa, and room temperature green tensile strength is 25KPa.
Claims (1)
1. a recyclable good permeability casting sand, it is characterised in that be made up of the raw material of following weight portion: old sand 2280-2400, fresh sand 80-120, bentonite 16-24, clay 100-120, furane resins 40-45, coal dust 16-20, poly alkylene glycol 4-5, phosphoric acid 5-6, tall oil 3-5, cationic starch 2-3, artemisia glue 3-5, Modified Quartz Sand 100-120, water are appropriate；
Described Modified Quartz Sand is made up of the raw material of following weight portion: quartz sand 90-100, stearic acid 1-2, liquid paraffin 3-5, graphene oxide 8-10, glass hollow microsphere 4-6, magnesium stearate 1-2, polyamide wax micropowder 2-3, castor oil acid polyester 2-3, vaseline 2-3；
The preparation method of described Modified Quartz Sand is: quartz sand is sent into calcining furnace, and at 1850-1950 DEG C, calcining fusing, is ground into the granule that particle diameter is 0.5-2mm, adds other residual componentss, grind 30-40 minute, to obtain final product；
The preparation method of described recyclable good permeability casting sand, comprises the following steps:
(1) being pulverized by clay, add the water mix homogeneously being equivalent to clay weight 7-9%, pelletize, particle diameter, at 0.5-2mm, sends into calcining furnace, sinters at 800-1000 DEG C, takes out, is polishing to surface roughness≤0.2mm, obtains clay particle；
(2) by bentonite, furane resins, coal dust, poly alkylene glycol, tall oil, cationic starch, artemisia glue mixing, add water and stir into the slurry that solid content is 45%, add phosphoric acid, then grind to form 30-70 order slurry；
(3) other residual componentss being mixed, add the clay particle that obtains of (1st) step, slurry that (2nd) step obtains, grinding distribution is uniform, to obtain final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410416627.5A CN104174809B (en) | 2014-08-22 | 2014-08-22 | A kind of recyclable good permeability casting sand and preparation method thereof |
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| CN201410416627.5A CN104174809B (en) | 2014-08-22 | 2014-08-22 | A kind of recyclable good permeability casting sand and preparation method thereof |
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| CN104174809A CN104174809A (en) | 2014-12-03 |
| CN104174809B true CN104174809B (en) | 2016-07-06 |
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| CN104646598A (en) * | 2015-01-22 | 2015-05-27 | 安徽省繁昌县皖南阀门铸造有限公司 | Moulding sands easy to recycle and preparation method thereof |
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| CN108568493A (en) * | 2018-05-11 | 2018-09-25 | 佛山市高明利钢精密铸造有限公司 | A kind of preparation method of moulding sand for casting |
| CN109047645B (en) * | 2018-09-30 | 2020-08-21 | 宁波嘉达精密铸造有限公司 | Sand casting mold and method for preparing bucket tooth tip by using same |
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