CN103100654B - A kind of preparation method of high intensity full-mold casting coating - Google Patents
A kind of preparation method of high intensity full-mold casting coating Download PDFInfo
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- CN103100654B CN103100654B CN201210530920.5A CN201210530920A CN103100654B CN 103100654 B CN103100654 B CN 103100654B CN 201210530920 A CN201210530920 A CN 201210530920A CN 103100654 B CN103100654 B CN 103100654B
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- 238000000576 coating method Methods 0.000 title claims abstract description 30
- 239000011248 coating agent Substances 0.000 title claims abstract description 29
- 238000010115 full-mold casting Methods 0.000 title claims abstract description 14
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 239000000843 powder Substances 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229960000892 attapulgite Drugs 0.000 claims abstract description 12
- 229910052625 palygorskite Inorganic materials 0.000 claims abstract description 12
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 8
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 8
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910001570 bauxite Inorganic materials 0.000 claims abstract description 7
- 239000001768 carboxy methyl cellulose Substances 0.000 claims abstract description 7
- 239000000919 ceramic Substances 0.000 claims abstract description 7
- ONCZQWJXONKSMM-UHFFFAOYSA-N dialuminum;disodium;oxygen(2-);silicon(4+);hydrate Chemical compound O.[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Na+].[Na+].[Al+3].[Al+3].[Si+4].[Si+4].[Si+4].[Si+4] ONCZQWJXONKSMM-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229960005191 ferric oxide Drugs 0.000 claims abstract description 7
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 7
- 235000019353 potassium silicate Nutrition 0.000 claims abstract description 7
- 229940080314 sodium bentonite Drugs 0.000 claims abstract description 7
- 229910000280 sodium bentonite Inorganic materials 0.000 claims abstract description 7
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 claims abstract description 7
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 claims abstract description 7
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 7
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 claims abstract description 4
- 229920005610 lignin Polymers 0.000 claims abstract description 4
- WXMKPNITSTVMEF-UHFFFAOYSA-M sodium benzoate Chemical compound [Na+].[O-]C(=O)C1=CC=CC=C1 WXMKPNITSTVMEF-UHFFFAOYSA-M 0.000 claims abstract description 4
- 235000010234 sodium benzoate Nutrition 0.000 claims abstract description 4
- 239000004299 sodium benzoate Substances 0.000 claims abstract description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 11
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- 239000011521 glass Substances 0.000 claims description 6
- 239000004575 stone Substances 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 239000008367 deionised water Substances 0.000 claims description 3
- 229910021641 deionized water Inorganic materials 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 239000001117 sulphuric acid Substances 0.000 claims description 3
- 235000011149 sulphuric acid Nutrition 0.000 claims description 3
- 238000005266 casting Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000003973 paint Substances 0.000 description 4
- 230000001680 brushing effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 229920006248 expandable polystyrene Polymers 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 125000003473 lipid group Chemical group 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 241000406668 Loxodonta cyclotis Species 0.000 description 1
- 239000002671 adjuvant Substances 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
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- Mold Materials And Core Materials (AREA)
Abstract
The invention discloses the preparation method of a kind of high intensity full-mold casting coating, it is made up of following component in parts by weight: bauxite chamotte 63 70 parts, tree ash 57 parts, waterglass 10 12 parts, sodium bentonite 10 12 parts, nano-attapulgite 46 parts, lignin sulfonic acid 12 parts, polyvinyl alcohol 23 parts, sodium carboxymethyl cellulose 0.8 1.5 parts, sodium benzoate 0.4 0.6 parts, 12 parts of nanometer scale ceramics powder, ferric oxide red powder 0.5 0.8 parts, 525 535 parts of water, the coating of the present invention is at high temperature, strong wearability it is respectively provided with under low temperature environment, high tack, excellent breathability and drip-dry full-mold casting coating, heavy castings production requirement can be met.
Description
Technical field
The present invention relates to casting field, particularly to the preparation method of a kind of high intensity full-mold casting coating.
Background technology
The disperse system that full-mold casting coating is made up of the material that multiple character is different, its composition mainly includes the compositions such as refractory material, polyvinyl alcohol, carrier, nano-attapulgite and special additive, needs coating have good processing performance, service behaviour, quality stability and apply repeatability.Full-mold casting coating is coated in the outer surface of foamed polystyrene pattern, treats that coating after drying could moulding cast.Foam plastics is airtight, heat distortion temperature low (about about 70 DEG C), poor to the affinity of water；Lipid residue after foam plastics melted by heating, gasification is many, and gas forming amount is big, if these gases and lipid residue can not be discharged in time, foundry goods will produce the carbon defects such as gas, carburetting, Surface Wrinkle in iron.These features determine full-mold paint should be possessed following performance requirement, i.e. coating and should have good wettability and being coated with property, good high-temperature resistant property and elevated temperature strength and good hot permeability.
The resistance to elevated temperatures of the cast paint of prior art is poor, can only be suitable for high-temperature process time shorter finding (within 200kg) and produce, not adapt to for heavy castings (within 20 tons) and the production of small lot manual work.Having resistant to elevated temperatures performance and can be suitably used for the production technology of heavy castings, but its manufacturing cost is higher, and be not applied for manual brushing, this coating is black, easily causes the image of working environment black pollution.
Summary of the invention
For the deficiencies in the prior art, it is an object of the invention to provide the preparation method of a kind of high intensity full-mold casting coating, strong wearability, high tack, excellent breathability and drip-dry full-mold casting coating it is respectively provided with so that it is disclosure satisfy that heavy castings production requirement under high temperature, low temperature environment.
Technical scheme is as follows:
The preparation method of a kind of high intensity full-mold casting coating, is made up of following component in parts by weight: bauxite chamotte 63-70 part, tree ash 5-7 part, waterglass 10-12
Part, sodium bentonite 10-12 part, nano-attapulgite 4-6
Part, lignin sulfonic acid 1-2 part, polyvinyl alcohol 2-3 part, sodium carboxymethyl cellulose 0.8-1.5 part, sodium benzoate 0.4-0.6 part, nanometer scale ceramics powder 1-2 part, ferric oxide red powder 0.5-0.8
Part, Fructus Canarii albi stone powder, hollow glass micropearl, water 55-65 part, described preparation method comprises the steps:
1) by tree ash 10-15% soak with sulphuric acid 3-4 hour, deionized water wash, then soak 3-4 hour with 10-12% sodium hydroxide solution, then be washed with deionized to neutrality, then calcine 2-3 hour at 500-530 DEG C, be ground into modified tree ash；
2) modified tree ash above-mentioned steps obtained mixes with the water of nano-attapulgite, 1/3 weight, stir and be heated to 150-160 DEG C, it is incubated 1-2 hour, stove is cooled to 50 DEG C, it is incubated 2 hours, is again heated to 100-120 DEG C, be incubated 1 hour, it is cooled to room temperature with 20 DEG C/h, i.e. prepares modified tree ash and nano-attapulgite water mixed liquid；
3) water of the waterglass of above-mentioned weight portion, sodium bentonite, nanometer scale ceramics powder, polyvinyl alcohol, sodium carboxymethyl cellulose and 1/4 weight is mixed, and be sufficiently stirred for, then stand 30-60min, be then slowly heated to 75-85 DEG C and be sufficiently stirred for；
4) by step 2) product, step 3) product, bauxite chamotte, ferric oxide red powder, Fructus Canarii albi stone powder, hollow glass micropearl, the water of residuals weight adds in reactor, open reactor, mixing speed is: 100-120r/min, other raw material is added in stirring downhill reaction still, heat simultaneously and the temperature of reactor is slowly increased to 70-80 DEG C, constant temperature stirring 10-18min, grind,.
Compared with prior art, there is advantages that
1) on the basis of great many of experiments, it is determined that the composition of the aggregate of coating, nano-attapulgite, bonding agent and adjuvant and respective content so that the effect between above-mentioned each component reaches collaborative, the combination property of coating is made to improve.The full-mold casting coating of the present invention had both reached high anti-burnon ability, the rigidity improving apperance and resistance to elevated temperatures, minimized cost again.Optimization through aggregate and various additive is allocated, and forms strong rheological fluid, all reaches preferable state with foamed polystyrene pattern wettability and brushability.It was verified that this coating just can reach more than 1.7mm paint thickness through 2 times brushings, the anti-burnon that can meet heavy castings requires and carries needs.
2) full-mold casting coating of the present invention, has good suspension and thixotropy, also has good breathability and higher surface strength, and preparation technology is simple and convenient to operate, abundant raw materials, production cost are low.Bright and clean, without carbon defects such as elephant skin with its full mold cast(ing) surface produced；Coating is easily peeled off, it is simple to cleaning.
Detailed description of the invention
The preparation method of a kind of high intensity full-mold casting coating, is made up of following component in terms of weight portion (kilogram): bauxite chamotte 63 parts, tree ash 7 parts, waterglass 12
Part, sodium bentonite 10 parts, nano-attapulgite 4 parts, lignin sulfonic acid 1 part, polyvinyl alcohol 3 parts, sodium carboxymethyl cellulose 1.5 parts, sodium benzoate 0.4 part, 2 parts of nanometer scale ceramics powder, ferric oxide red powder 0.8
Part, Fructus Canarii albi stone powder 3 parts, hollow glass micropearl 2 parts, 59 parts of water, described preparation method comprises the steps:
1) by tree ash 10-15% soak with sulphuric acid 3-4 hour, deionized water wash, then soak 3-4 hour with 10-12% sodium hydroxide solution, then be washed with deionized to neutrality, then calcine 2-3 hour at 500-530 DEG C, be ground into modified tree ash；
2) modified tree ash above-mentioned steps obtained mixes with the water of nano-attapulgite, 1/3 weight, stir and be heated to 150-160 DEG C, it is incubated 1-2 hour, stove is cooled to 50 DEG C, it is incubated 2 hours, is again heated to 100-120 DEG C, be incubated 1 hour, it is cooled to room temperature with 20 DEG C/h, i.e. prepares modified tree ash and nano-attapulgite water mixed liquid；
3) water of the waterglass of above-mentioned weight portion, sodium bentonite, nanometer scale ceramics powder, polyvinyl alcohol, sodium carboxymethyl cellulose and 1/4 weight is mixed, and be sufficiently stirred for, then stand 30-60min, be then slowly heated to 75-85 DEG C and be sufficiently stirred for；
4) by step 2) product, step 3) product, bauxite chamotte, ferric oxide red powder, Fructus Canarii albi stone powder, hollow glass micropearl, the water of residuals weight adds in reactor, open reactor, mixing speed is: 100-120r/min, other raw material is added in stirring downhill reaction still, heat simultaneously and the temperature of reactor is slowly increased to 70-80 DEG C, constant temperature stirring 10-18min, grind,.
Suspensibility after the coating utilizing the method for the present invention to prepare is placed 72 hours is more than 94%；The shear stress of coating is limited to 16-19Pa；Being 40-42s with being coated with 4 viscometers and measure the apparent viscosity value of coating, thixotroping rate 15-16%, the brushing index of coating, drip amount and drip time is respectively 6.0,0.4g and 10s.The normal temperature strength of coating is higher than 700g/mm.After 1200 DEG C of roastings, the intensity of paint coatings is higher than 500g/mm.The room temperature breathability of coating is higher than 11cm2(kPa min)-1, hot permeability is more than 22cm2(kPa min)-1。
Claims (1)
1. the preparation method of a high intensity full-mold casting coating, it is characterized in that, it is made up of following component in parts by weight: bauxite chamotte 63-70 part, tree ash 5-7 part, waterglass 10-12 part, sodium bentonite 10-12 part, nano-attapulgite 4-6 part, lignin sulfonic acid 1-2 part, polyvinyl alcohol 2-3 part, sodium carboxymethyl cellulose 0.8-1.5 part, sodium benzoate 0.4-0.6 part, nanometer scale ceramics powder 1-2 part, ferric oxide red powder 0.5-0.8 part, Fructus Canarii albi stone powder 2-3 part, hollow glass micropearl 2-3 part, water 55-65 part；
Described preparation method comprises the steps:
1) by soak with sulphuric acid 3-4 hour of tree ash 10-15%, deionized water wash, then soak 3-4 hour with 10-12% sodium hydroxide solution, then be washed with deionized to neutrality, then calcine 2-3 hour at 500-530 DEG C, be ground into modified tree ash；
2) modified tree ash above-mentioned steps obtained mixes with the water of nano-attapulgite, 1/3 weight, stir and be heated to 150-160 DEG C, it is incubated 1-2 hour, stove is cooled to 50 DEG C, it is incubated 2 hours, is again heated to 100-120 DEG C, be incubated 1 hour, it is cooled to room temperature with 20 DEG C/h, i.e. prepares modified tree ash and nano-attapulgite water mixed liquid；
3) water of the waterglass of above-mentioned weight portion, sodium bentonite, nanometer scale ceramics powder, polyvinyl alcohol, sodium carboxymethyl cellulose and 1/4 weight is mixed, and be sufficiently stirred for, then stand 30-60min, be then slowly heated to 75-85 DEG C and be sufficiently stirred for；
4) by step 2) product, step 3) product, bauxite chamotte, ferric oxide red powder, Fructus Canarii albi stone powder, hollow glass micropearl, the water of residuals weight adds in reactor, open reactor, mixing speed is 100-120r/min, other raw material is added in stirring downhill reaction still, heat simultaneously and the temperature of reactor is slowly increased to 70-80 DEG C, constant temperature stirring 10-18min, grinds.
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| CN201210530920.5A CN103100654B (en) | 2012-12-11 | 2012-12-11 | A kind of preparation method of high intensity full-mold casting coating |
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| CN201210530920.5A CN103100654B (en) | 2012-12-11 | 2012-12-11 | A kind of preparation method of high intensity full-mold casting coating |
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| CN103100654A CN103100654A (en) | 2013-05-15 |
| CN103100654B true CN103100654B (en) | 2016-12-21 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104209452A (en) * | 2014-06-16 | 2014-12-17 | 芜湖市鸿坤汽车零部件有限公司 | Modified steel slag sand alcohol-based casting coating and preparation method thereof |
| CN104874752B (en) * | 2015-05-20 | 2018-02-06 | 柳州市百田机械有限公司 | The spraying method of metal-type casting coating |
| CN104874722A (en) * | 2015-05-20 | 2015-09-02 | 柳州市百田机械有限公司 | High temperature resistant casting coating |
| CN105562592A (en) * | 2016-01-11 | 2016-05-11 | 明光市留香泵业有限公司 | Low-carbon-residue high-temperature-creep-resisting lost foam casting water-based paint with nanophase ceramic powder solution enhancement function and preparation method of water-based paint |
| CN108892519A (en) * | 2018-07-31 | 2018-11-27 | 合肥铭佑高温技术有限公司 | A kind of refractory material and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002143982A (en) * | 2000-11-06 | 2002-05-21 | Mitsubishi Heavy Ind Ltd | Coating agent for producing cast iron |
| JP2005046856A (en) * | 2003-07-30 | 2005-02-24 | Kimura Chuzosho:Kk | Full mold casting method |
| CN101497104A (en) * | 2009-03-11 | 2009-08-05 | 杨玉光 | Lost foam paint and method for producing the same |
| CN102500745A (en) * | 2011-11-29 | 2012-06-20 | 朱小英 | Method for preparing full-mold casting coating |
-
2012
- 2012-12-11 CN CN201210530920.5A patent/CN103100654B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002143982A (en) * | 2000-11-06 | 2002-05-21 | Mitsubishi Heavy Ind Ltd | Coating agent for producing cast iron |
| JP2005046856A (en) * | 2003-07-30 | 2005-02-24 | Kimura Chuzosho:Kk | Full mold casting method |
| CN101497104A (en) * | 2009-03-11 | 2009-08-05 | 杨玉光 | Lost foam paint and method for producing the same |
| CN102500745A (en) * | 2011-11-29 | 2012-06-20 | 朱小英 | Method for preparing full-mold casting coating |
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| CN103100654A (en) | 2013-05-15 |
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Inventor after: Chen Yali Inventor before: Xia Kuncai |
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Effective date of registration: 20161021 Address after: Luoyang Huian County in Fujian province Quanzhou city 362000 town after the first No. 191 Applicant after: Chen Yali Address before: Wuhu City, Anhui province 241007 yeatan Jiujiang Road Economic Development Zone No. 5 Applicant before: WUHU HENGKUN AUTO PARTS Co.,Ltd. |
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Effective date of registration: 20190618 Address after: 211300 Xiaozhuang Village, Dongba Town, Gaochun District, Nanjing City, Jiangsu Province Patentee after: Nanjing Huiteng Machinery Casting Co.,Ltd. Address before: No. 191, Dongtou, Houting Village, Luoyang Town, Hui'an County, Quanzhou City, Fujian Province, 362000 Patentee before: Chen Yali |
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