CN104475653B - A kind of highly-breathable molding sand and preparation method thereof - Google Patents
A kind of highly-breathable molding sand and preparation method thereof Download PDFInfo
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- CN104475653B CN104475653B CN201410607579.8A CN201410607579A CN104475653B CN 104475653 B CN104475653 B CN 104475653B CN 201410607579 A CN201410607579 A CN 201410607579A CN 104475653 B CN104475653 B CN 104475653B
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- 239000003110 molding sand Substances 0.000 title claims abstract description 23
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000004927 clay Substances 0.000 claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000002245 particle Substances 0.000 claims abstract description 20
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical compound [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 claims abstract description 18
- 239000000843 powder Substances 0.000 claims abstract description 13
- -1 alcohol ester Chemical class 0.000 claims abstract description 10
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 9
- 235000019359 magnesium stearate Nutrition 0.000 claims abstract description 9
- 239000000919 ceramic Substances 0.000 claims abstract description 7
- 239000010881 fly ash Substances 0.000 claims abstract description 7
- 239000002994 raw material Substances 0.000 claims abstract description 7
- JHJUUEHSAZXEEO-UHFFFAOYSA-M sodium;4-dodecylbenzenesulfonate Chemical compound [Na+].CCCCCCCCCCCCC1=CC=C(S([O-])(=O)=O)C=C1 JHJUUEHSAZXEEO-UHFFFAOYSA-M 0.000 claims abstract description 7
- 239000003822 epoxy resin Substances 0.000 claims abstract description 6
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 6
- 239000007799 cork Substances 0.000 claims abstract description 5
- 239000004115 Sodium Silicate Substances 0.000 claims abstract description 4
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 claims abstract description 4
- 235000019837 monoammonium phosphate Nutrition 0.000 claims abstract description 4
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052911 sodium silicate Inorganic materials 0.000 claims abstract description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 21
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 15
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 12
- WMWLMWRWZQELOS-UHFFFAOYSA-N bismuth(iii) oxide Chemical compound O=[Bi]O[Bi]=O WMWLMWRWZQELOS-UHFFFAOYSA-N 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 11
- 239000006004 Quartz sand Substances 0.000 claims description 6
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 6
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 claims description 6
- 239000008187 granular material Substances 0.000 claims description 6
- 229910000077 silane Inorganic materials 0.000 claims description 6
- 239000004408 titanium dioxide Substances 0.000 claims description 6
- 239000002002 slurry Substances 0.000 claims description 5
- 239000012467 final product Substances 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 3
- 239000005977 Ethylene Substances 0.000 claims description 3
- 238000001354 calcination Methods 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- FATBGEAMYMYZAF-KTKRTIGZSA-N oleamide Chemical compound CCCCCCCC\C=C/CCCCCCCC(N)=O FATBGEAMYMYZAF-KTKRTIGZSA-N 0.000 claims description 3
- FATBGEAMYMYZAF-UHFFFAOYSA-N oleicacidamide-heptaglycolether Natural products CCCCCCCCC=CCCCCCCCC(N)=O FATBGEAMYMYZAF-UHFFFAOYSA-N 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 3
- 238000010791 quenching Methods 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 230000003746 surface roughness Effects 0.000 claims description 3
- 239000003784 tall oil Substances 0.000 claims 1
- 238000004064 recycling Methods 0.000 abstract description 4
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 230000035699 permeability Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 2
- 230000007423 decrease Effects 0.000 abstract 1
- 239000004576 sand Substances 0.000 description 8
- 238000005266 casting Methods 0.000 description 4
- 239000002817 coal dust Substances 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 2
- 235000010627 Phaseolus vulgaris Nutrition 0.000 description 1
- 244000046052 Phaseolus vulgaris Species 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- DKXULEFCEORBJK-UHFFFAOYSA-N magnesium;octadecanoic acid Chemical compound [Mg].CCCCCCCCCCCCCCCCCC(O)=O DKXULEFCEORBJK-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000011122 softwood Substances 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
A kind of highly-breathable molding sand and preparation method thereof, is prepared by the raw materials in: clay 200 220, sericite 20 30, flyash 57, ammonium dihydrogen phosphate 1 1.4, dodecylbenzene sodium sulfonate 0.8 1.3, quick dissolved sodium silicate 23, magnesium stearate 46, crystallite foamed ceramics powder 20 25, cork powder 1 1.5, alcohol ester 12 1 1.5, E 12 epoxy resin 35, water are appropriate, auxiliary agent 20 30；Molding sand of the present invention employs clay, through pelletize, good permeability, it is also possible to recycling, decreases environmental pollution, also has good mobility, dispersibility, processes through surface, and hygroscopicity is little；By using cork powder, add high temperature collapsibility good, easy-clear, by using epoxy resin, make molding sand have higher dry, wet strength；Auxiliary agent of the present invention is prevented from clay particle and is bonded together, convenient recycling, adds the plasticity of molding sand.
Description
Technical field
The present invention relates to a kind of casting field, particularly relate to a kind of highly-breathable molding sand and preparation method thereof.
Background technology
Molding sand is typically mixed according to a certain percentage by Modeling Materials such as Foundry sand, moulding sand binder and additional things at present
Form.If molding sand particle diameter is the biggest, although breathability is preferable, but cast(ing) surface is relatively rough, and fineness is bad；If molding sand
Material footpath is the least, causes mo ld void bad, and aluminium casting has pore to produce.It is thus desirable to control the particle diameter of molding sand.
Molding sand also can be with natural silica sand argillaceous, domestic and international widely used coal dust clay green-sand, typically by roughing sand,
Binding agent, coal dust additive etc. are blended with water, have certain Sand sticking-resistant effect and the cost of material is low, production efficiency is high
Advantage, but its consumption is big, discharge is serious, decompose at casting process coal dust firing and produce toxic gas and pollute.Conventional clay type
Sand is not easily recycled utilization, there is also the shortcomings such as easy dusting bean, collapsibility is poor, poor fluidity, thermostability are bad, needs to improve.
Summary of the invention
It is an object of the invention to provide a kind of highly-breathable molding sand and preparation method thereof, this molding sand not only good permeability,
But also environmental pollution can be decreased with recycling, and also there is good mobility, dispersibility, hygroscopicity is little, and high temperature is burst
Dissipate property good, easy-clear.
Technical scheme is as follows:
A kind of highly-breathable molding sand, it is characterised in that be prepared by the raw materials in: clay 200-220, sericite
20-30, flyash 5-7, ammonium dihydrogen phosphate 1-1.4, dodecylbenzene sodium sulfonate 0.8-1.3, quick dissolved sodium silicate 2-3, stearic acid
Magnesium 4-6, crystallite foamed ceramics powder 20-25, cork powder 1-1.5, alcohol ester 12 1-1.5, E-12 epoxy resin 3-5, water are appropriate, help
Agent 20-30；
Described auxiliary agent is prepared by the raw materials in: aluminium oxide 13-17, titanium dioxide 3-4, quartz sand 3-5, Tuo Er
Double oleamide 0.4-0.6, Bi2O3 1-2, B2O3 1-2 of oil 0.5-1, magnesium stearate 1-1.4, ethylene, clay 3-4, silane are even
Connection agent KH-550 0.8-1.2, water are appropriate；Preparation method is: by aluminium oxide, titanium dioxide, quartz sand, Bi2O3, B2O3 mixing,
Send into dry pot to be heated to melting, add Quench in cold water, be ground into the granule of particle diameter≤1.5mm；By clay, silane coupler
KH-550 adds in 4-5 weight parts water, adds described granule, grind 20-30 minute after stirring, dries, and pulverizes, and particle diameter exists
0.05-2mm, then mix with other residual componentss, stir, to obtain final product.
The preparation method of described highly-breathable molding sand, it is characterised in that comprise the following steps:
(1) by clay, crystallite foamed ceramics powder, sericite, flyash mix homogeneously, the water stirring of 7-9% weight portion is added
Uniformly, pelletize, particle diameter is in 0.05-2mm, feeding calcining furnace, and pre-burning 20-25 minute at 300-400 DEG C, then at 900-
Sinter at 1000 DEG C, take out, be polishing to surface roughness≤0.1mm, obtain clay particle；
(2) take the water of 20-30 weight portion, add dodecylbenzene sodium sulfonate, magnesium stearate, alcohol ester 12, stir,
To slurry, clay particle is seethed while spray into described slurry, place after mix homogeneously 2-3 hour, dry, obtain mixture
Material；
(3) material that (2nd) step obtains is mixed with other residual componentss, add the water mixing of 3-5% weight portion all
Even, to obtain final product.
Beneficial effects of the present invention
Molding sand of the present invention employs clay, through pelletize, and not only good permeability, but also can reduce with recycling
Environmental pollution, also has good mobility, dispersibility, processes through surface, and hygroscopicity is little；By using cork powder, increase
Add high temperature collapsibility good, easy-clear, by using epoxy resin, make molding sand have higher dry, wet strength；Auxiliary agent of the present invention
Employ the exotic materials such as aluminium oxide, will not be melted when casting, it is possible to prevent clay particle to be bonded together, facilitate back
Receive and utilize, simultaneously because Surface coating has clay, strong with the adhesion of clay particle, add the plasticity of molding sand；Should simultaneously
The good fluidity of auxiliary agent.
Detailed description of the invention
A kind of highly-breathable molding sand, is made up of the raw material of following weight portion (kilogram): clay 210, sericite 25, flyash
6, ammonium dihydrogen phosphate 1.2, dodecylbenzene sodium sulfonate 1, quick dissolved sodium silicate 2.5, magnesium stearate 5, crystallite foamed ceramics powder 23, soft
Wood powder 1.3, alcohol ester 12 1.3, E-12 epoxy resin 4, water are appropriate, auxiliary agent 25；
Described auxiliary agent is made up of the raw material of following weight portion (kilogram): aluminium oxide 15, titanium dioxide 3.5, quartz sand 4, appropriate
That oil 0.7, magnesium stearate 1.2, ethylene double oleamide 0.5, Bi2O3 1.5, B2O3 1.5, clay 3.5, silane coupler
KH-550 1, water are appropriate；Preparation method is: by aluminium oxide, titanium dioxide, quartz sand, Bi2O3, B2O3 mixing, sends into dry pot and adds
Heat, to melting, adds Quench in cold water, is ground into the granule of particle diameter≤1.5mm；Clay, silane resin acceptor kh-550 are added
In 4.5 weight parts waters, after stirring, add described granule, grind 25 minutes, dry, pulverize, particle diameter at 0.05-2mm, then with other
Residual components mixes, and stirs, to obtain final product.
The preparation method of described highly-breathable molding sand, comprises the following steps:
(1) by clay, crystallite foamed ceramics powder, sericite, flyash mix homogeneously, the water stirring of 8% weight portion is added all
Even, pelletize, particle diameter, at 0.05-2mm, is sent in calcining furnace, and then pre-burning 23 minutes at 350 DEG C sinter at 950 DEG C, take
Go out, be polishing to surface roughness≤0.1mm, obtain clay particle；
(2) take the water of 25 weight portions, add dodecylbenzene sodium sulfonate, magnesium stearate, alcohol ester 12, stir, obtain
Slurry, seethes while spray into described slurry by clay particle, places 2.5 hours after mix homogeneously, dries, obtains mixture
Material；
(3) material that (2nd) step obtains is mixed with other residual componentss, adds the water mix homogeneously of 4% weight portion,
Obtain.
The sand test data that the present embodiment obtains are as follows: green compression strength is 170KPa, breathability 145, hot green tensile strength
For 4KPa, room temperature green tensile strength is 28KPa.
Claims (2)
1. a highly-breathable molding sand, it is characterised in that be prepared by the raw materials in: clay 200-220, sericite 20-
30, flyash 5-7, ammonium dihydrogen phosphate 1-1.4, dodecylbenzene sodium sulfonate 0.8-1.3, quick dissolved sodium silicate 2-3, magnesium stearate 4-
6, crystallite foamed ceramics powder 20-25, cork powder 1-1.5, alcohol ester 12 1-1.5, E-12 epoxy resin 3-5, water is appropriate, auxiliary agent 20-
30；
Described auxiliary agent is prepared by the raw materials in: aluminium oxide 13-17, titanium dioxide 3-4, quartz sand 3-5, tall oil
Double oleamide 0.4-0.6, Bi2O3 1-2, B2O3 1-2 of 0.5-1, magnesium stearate 1-1.4, ethylene, clay 3-4, silane coupled
Agent KH-550 0.8-1.2, water are appropriate；Preparation method is: by aluminium oxide, titanium dioxide, quartz sand, Bi2O3, B2O3 mixing, send
Enter dry pot to be heated to melting, add Quench in cold water, be ground into the granule of particle diameter≤1.5mm；By clay, silane coupler KH-
550 add in 4-5 weight parts water, add described granule, grind 20-30 minute after stirring, dry, and pulverize, and particle diameter is at 0.05-
2mm, then mix with other residual componentss, stir, to obtain final product.
The preparation method of highly-breathable molding sand the most according to claim 1, it is characterised in that comprise the following steps:
(1) by clay, crystallite foamed ceramics powder, sericite, flyash mix homogeneously, the water stirring of 7-9% weight portion is added all
Even, pelletize, particle diameter is in 0.05-2mm, feeding calcining furnace, and pre-burning 20-25 minute at 300-400 DEG C, then at 900-1000
Sinter at DEG C, take out, be polishing to surface roughness≤0.1mm, obtain clay particle；
(2) take the water of 20-30 weight portion, add dodecylbenzene sodium sulfonate, magnesium stearate, alcohol ester 12, stir, starched
Material, seethes while spray into described slurry by clay particle, places 2-3 hour, dry, obtain mixed material after mix homogeneously；
(3) material that (2nd) step obtains is mixed with other residual componentss, add the water mix homogeneously of 3-5% weight portion, i.e.
?.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410607579.8A CN104475653B (en) | 2014-11-03 | 2014-11-03 | A kind of highly-breathable molding sand and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410607579.8A CN104475653B (en) | 2014-11-03 | 2014-11-03 | A kind of highly-breathable molding sand and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN104475653A CN104475653A (en) | 2015-04-01 |
| CN104475653B true CN104475653B (en) | 2016-12-07 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105170871A (en) * | 2015-08-19 | 2015-12-23 | 合肥市田源精铸有限公司 | High-strength molding sand |
| CN110523914A (en) * | 2019-09-17 | 2019-12-03 | 含山县荣盛机械铸造有限公司 | A kind of preparation method of high temperature heat-resistant impact casting sand |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU430934A1 (en) * | 1972-01-17 | 1974-06-05 | Т. С. Воронина, Ю. А. Лезов, А. И. Филатов , Ю. К. Калинин Череповецкий металлургический завод | MIXTURE FOR CASTING STEM AND FORMS |
| SU1133014A1 (en) * | 1982-12-30 | 1985-01-07 | Львовское Специальное Конструкторско-Технологическое Бюро Производственного Объединения "Ювелирпром" | Sand mixture for manufacturing investment moulds |
| CN103042158A (en) * | 2012-12-25 | 2013-04-17 | 马鞍山市万鑫铸造有限公司 | High crush-resistance moulding sand and preparation method thereof |
| CN103521681A (en) * | 2013-10-16 | 2014-01-22 | 合肥市田源精铸有限公司 | Molding sand and preparation method thereof |
| CN104057014A (en) * | 2014-05-28 | 2014-09-24 | 安徽鑫润新型材料有限公司 | Gray iron casting moulding sand and preparation method thereof |
-
2014
- 2014-11-03 CN CN201410607579.8A patent/CN104475653B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU430934A1 (en) * | 1972-01-17 | 1974-06-05 | Т. С. Воронина, Ю. А. Лезов, А. И. Филатов , Ю. К. Калинин Череповецкий металлургический завод | MIXTURE FOR CASTING STEM AND FORMS |
| SU1133014A1 (en) * | 1982-12-30 | 1985-01-07 | Львовское Специальное Конструкторско-Технологическое Бюро Производственного Объединения "Ювелирпром" | Sand mixture for manufacturing investment moulds |
| CN103042158A (en) * | 2012-12-25 | 2013-04-17 | 马鞍山市万鑫铸造有限公司 | High crush-resistance moulding sand and preparation method thereof |
| CN103521681A (en) * | 2013-10-16 | 2014-01-22 | 合肥市田源精铸有限公司 | Molding sand and preparation method thereof |
| CN104057014A (en) * | 2014-05-28 | 2014-09-24 | 安徽鑫润新型材料有限公司 | Gray iron casting moulding sand and preparation method thereof |
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| CN104475653A (en) | 2015-04-01 |
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Inventor after: He Wendong Inventor before: Sun Xiucai |
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Denomination of invention: A high permeability molding sand and its preparation method Effective date of registration: 20230707 Granted publication date: 20161207 Pledgee: Wuhu Jinfan Financing Guarantee Co.,Ltd. Pledgor: WUHU JIUHONG HEAVY INDUSTRY CO.,LTD. Registration number: Y2023980047737 |