CN102366814A - Method for preparing paint used for aluminum alloy low pressure casting metal type - Google Patents
Method for preparing paint used for aluminum alloy low pressure casting metal type Download PDFInfo
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- CN102366814A CN102366814A CN2011103076278A CN201110307627A CN102366814A CN 102366814 A CN102366814 A CN 102366814A CN 2011103076278 A CN2011103076278 A CN 2011103076278A CN 201110307627 A CN201110307627 A CN 201110307627A CN 102366814 A CN102366814 A CN 102366814A
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- aluminum alloy
- pressure casting
- powder
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Links
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 27
- 239000002184 metal Substances 0.000 title claims abstract description 27
- 238000005266 casting Methods 0.000 title claims abstract description 19
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title abstract description 11
- 239000003973 paint Substances 0.000 title abstract description 11
- 239000000843 powder Substances 0.000 claims abstract description 27
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 15
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 claims abstract description 14
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052863 mullite Inorganic materials 0.000 claims abstract description 14
- 235000010413 sodium alginate Nutrition 0.000 claims abstract description 14
- 239000000661 sodium alginate Substances 0.000 claims abstract description 14
- 229940005550 sodium alginate Drugs 0.000 claims abstract description 14
- 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 13
- 229940080314 sodium bentonite Drugs 0.000 claims abstract description 13
- 229910000280 sodium bentonite Inorganic materials 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 12
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 11
- 238000002360 preparation method Methods 0.000 claims abstract description 10
- 238000000576 coating method Methods 0.000 claims description 50
- 239000011248 coating agent Substances 0.000 claims description 49
- 239000000203 mixture Substances 0.000 claims description 25
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 13
- -1 neopelex Substances 0.000 claims description 11
- 241001504664 Crossocheilus latius Species 0.000 claims description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 5
- 239000004698 Polyethylene Substances 0.000 claims description 5
- 239000012535 impurity Substances 0.000 claims description 5
- 229920000573 polyethylene Polymers 0.000 claims description 5
- 239000002994 raw material Substances 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 5
- 206010039509 Scab Diseases 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract description 3
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 abstract description 2
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 abstract 1
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 abstract 1
- 230000008569 process Effects 0.000 description 7
- 238000005507 spraying Methods 0.000 description 6
- 235000020357 syrup Nutrition 0.000 description 6
- 239000006188 syrup Substances 0.000 description 6
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 5
- 239000011230 binding agent Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 235000019353 potassium silicate Nutrition 0.000 description 4
- 239000006229 carbon black Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 231100000252 nontoxic Toxicity 0.000 description 2
- 230000003000 nontoxic effect Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000000375 suspending agent Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- KHBQMWCZKVMBLN-UHFFFAOYSA-N Benzenesulfonamide Chemical compound NS(=O)(=O)C1=CC=CC=C1 KHBQMWCZKVMBLN-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 241000276489 Merlangius merlangus Species 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000008199 coating composition Substances 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920005596 polymer binder Polymers 0.000 description 1
- 239000002491 polymer binding agent Substances 0.000 description 1
- 229940068984 polyvinyl alcohol Drugs 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Landscapes
- Mold Materials And Core Materials (AREA)
Abstract
The invention discloses a method for preparing a paint used for an aluminum alloy low pressure casting metal type. The paint prepared by the invention comprises the following components: 35-45% of mullite powder, 5-10% of alumina powder, 5.5-6.5% of sodium bentonite, 2.0-2.5% of polyvinyl alcohol, 0.8-1.0% of sodium alginate, 3.5-4.0% of silica sol, 0.8-1.0% of sodium dodecyl benzene sulfonate and the balance of water. The preparation method of the invention has the advantages of wide raw material source, low cost and simple paint preparation process. The paint is used for aluminum alloy low pressure casting metal type, the casting is easy to demould, and the surface of the casting is smooth without the defects of scabs forming and adhesion.
Description
Technical field
The present invention relates to casting field, particularly the low pressure casting aluminum alloy technical field.
Background technology
The kind of metal mold coating is a lot, mainly distinguishes according to paint adhesion agent and resistant to elevated temperatures inserts.Binding agent commonly used has syrup, waterglass, high polymer binders such as also useful resin, polyvinyl alcohol.Resistant to elevated temperatures inserts is black lead powder, spraying carbon black, coke powder, high-alumina fly etc.Syrup coating composition commonly used is: black lead powder＞30%, spraying carbon black＞45%, syrup＞15%.After these material mixing, be placed in the gyratory shaker, add suitable quantity of water, fully stirred 1.5-2 hour.Coating density requires at 1.2-1.3g/cm
3Between.Sodium silicate binder paint ingredient commonly used is: carbon black 80%, waterglass 20% and an amount of moisture, density 1.1-1.2g/cm
3Polyvinyl alcohol adhesive paint ingredient commonly used is: high-alumina fly that 200 orders are above and 300-400g polyvinyl alcohol and an amount of moisture system of mixing form.When being the metal mold repeated use, the advantage of using syrup to make binding agent clears up easily.Shortcoming is that syrup is to process with grain, and the temperature to metal mold has certain requirement when using, and mold temperature too prepared paint is not coated with, and the moisture in the coating is not volatile, causes gas hole defect easily; Mold temperature is too high; Syrup is burnt easily, makes coating lose adhesive property, and molten metal washes out dope layer easily during cast; Metal mold is lost protective effect; Make cast(ing) surface be prone to many tiny pin holes, also can produce the phenomenon that metal mold and foundry goods molten metal adhere to each other sometimes, cause scrapping of foundry goods and casting mold when serious.The advantage of waterglass coating is that dry strength is big, and the metal mold temperature undergoes no deterioration when high and burns.Shortcoming is to use back cleaning difficulty.Paint thickness can not be coated with thick, only can reach 0.3-0.5mm, otherwise easy to crack peeling off, so casting mold is shorter service life.The polyvinyl alcohol coating advantage is that dry strength is big, can with multiple high temperature resistant filler mixed preparing, paint thickness can thicken to 2-5mm, under the molten metal high temperature action, can produce carbonization light film, makes cast(ing) surface bright and clean.Shortcoming is that the mixed system time is long, will ceaselessly stir during spraying, and to prevent the coating layering and precipitating, the difficult control of coating layer thickness evenly.
In the prior art; In the low-pressure casting of aluminium alloy; The coating that is used for metal mold cavity and cast instrument surface spraying; Domestic traditional product mainly is that to adopt pulvis such as zinc oxide, whiting, graphite powder be raw material, adds waterglass by different proportion and carries out scene modulation with water, after stirring, sprays use.Facts have proved that this technological open defect has: 1. be in harmonious proportion and prepare the coating troublesome poeration, expend time in, 2. the raw material cost is high, influences the product benefit; 3. because the traditional raw material heat-insulating property is poor, thus need frequent heating die cavity and spraying when using, and be prone to cause the sticking burning of die cavity; 4. the surface quality of continuous castings of producing is not good enough.
Summary of the invention
To the deficiency of prior art, one of the object of the invention is to provide the preparation method of a kind of aluminum alloy low-pressure casting metal mold with coating.
For realizing above-mentioned purpose, the technical scheme that the present invention adopts is following:
A kind of aluminum alloy low-pressure casting metal mold comprises the steps: with the preparation method of coating
1) composition of coating is; In mass fraction: 35-45% mullite powder, 5-10% alumina powder, 5.5-6.5% sodium bentonite; 2.0-2.5% polyvinyl alcohol, 0.8-1.0% sodium alginate, 3.5-4.0% Ludox, 0.8-1.0% neopelex, surplus are water, by above-mentioned component weigh batching;
2) earlier 200-280 order sodium bentonite, 200-280 order mullite powder, 200-280 order alumina powder are added in the edge runner by said ratio, do and mix 15-25min;
3) add sodium alginate, neopelex, polyethylene alcohol and water successively by said ratio then, mix and grind 180-240min;
4) add Ludox by said ratio then and mix stone roller 30-40mi n;
The coating that 5) will mix at last behind the stone roller sieves through the 80-100 mesh, removes impurity.
The main refractory aggregate of coating of the present invention is selected 200-280 mullite powder and 200-280 order alumina powder for use, and is main refractory aggregate with the mullite powder, makes low-voltage cast aluminum spare any surface finish, and nothing scabs, and does not have defectives such as adhesion.The refractory aggregate of coating of the present invention in order to improve the resistance to elevated temperatures of coating, also adds the 5-10% alumina powder except mullite, can guarantee that coating has elevated temperature strength and good flow coat performance preferably.
Coating of the present invention is made suspending agent with sodium bentonite, polyvinyl alcohol and sodium alginate, and suspending agent is used for preventing the deposition of refractory aggregate.Sodium alginate adds in the coating, can obviously improve coating suspension property.And the raw making materials of polyvinyl alcohol is an oil and natural gas; Its wide material sources, and nontoxic, tasteless, add in the coating and can improve the coating suspension performance; Shared with sodium bentonite and sodium alginate, can obtain higher sedimentation stability, quick-drying and good brushability.
The viscosity of Ludox is less, and the powder liquor ratio of coating can improve greatly, thereby coating surface intensity is improved, and hardness improves, to obtain the bright and clean cast(ing) surface of high-quality.In addition, the using silica-sol wash good stability, and can adopt the mode of air dry to obtain intensity.Ludox still is that nontoxic nothing is corroded non-inflammable explosive article, with its coatings formulated environmentally safe, to personal safety.Add the 3.5-4.0% Ludox in the coating of the present invention and make binding agent, can make coating have the good high-temperature bond strength.
For being hung well, coating is attached to the metal mold surface; Requirement has certain wettability to the metal mold surface; Add proper amount of surfactant,, add the 0.8-1.0% neopelex in the coating of the present invention with the surface tension of reduction coating or the interfacial tension between coating and the metal mold material; Promptly be ionized into the sodium particle of electronegative benzene sulfonamide acid group and positively charged after it is water-soluble; One end of positively charged attracts to align with metal mold mutually, has reduced the interfacial tension between metal mold and coating, has improved the combine effect of coating with casting mold.
The beneficial effect that the present invention prepares the method for coating is:
1. the inventive method raw material sources are extensive, and cost is low, and preparation coating is simple to operate.
2. coating of the present invention only need be brushed on temperature is 300-330 ℃ metal mold, gets final product after the drying, does not need during use frequently to heat die cavity and spraying, and is easy to use.
3. coating of the present invention is used for the aluminum alloy low-pressure casting metal mold, and foundry goods is prone to the demoulding, and cast(ing) surface is bright and clean, defectives such as nothing scabs, adhesion.
The specific embodiment
Embodiment one
A kind of aluminum alloy low-pressure casting metal mold comprises the steps: with the preparation method of coating
1) composition of coating is; In mass fraction: 35% mullite powder, 10% alumina powder, 5.5% sodium bentonite; 2.5% polyvinyl alcohol, 0.8% sodium alginate, 4.0% Ludox, 0.8% neopelex, surplus are water, by above-mentioned component weigh batching;
2) earlier 200-280 order sodium bentonite, 200-280 order mullite powder, 200-280 order alumina powder are added in the edge runner by said ratio, do and mix 15min;
3) add sodium alginate, neopelex, polyethylene alcohol and water successively by said ratio then, mix and grind 240min;
4) add Ludox by said ratio then and mix stone roller 30min;
The coating that 5) will mix at last behind the stone roller sieves through 100 mesh, removes impurity.
Embodiment two
A kind of aluminum alloy low-pressure casting metal mold comprises the steps: with the preparation method of coating
1) composition of coating is; In mass fraction: 45% mullite powder, 5% alumina powder, 6.5% sodium bentonite; 2.0% polyvinyl alcohol, 1.0% sodium alginate, 3.5% Ludox, 1.0% neopelex, surplus are water, by above-mentioned component weigh batching;
2) earlier 200-280 order sodium bentonite, 200-280 order mullite powder, 200-280 order alumina powder are added in the edge runner by said ratio, do and mix 25min;
3) add sodium alginate, neopelex, polyethylene alcohol and water successively by said ratio then, mix and grind 180min;
4) add Ludox by said ratio then and mix stone roller 40min;
The coating that 5) will mix at last behind the stone roller sieves through 80 mesh, removes impurity.
Embodiment three
A kind of aluminum alloy low-pressure casting metal mold comprises the steps: with the preparation method of coating
1) composition of coating is; In mass fraction: 40% mullite powder, 8% alumina powder, 6% sodium bentonite; 2.3% polyvinyl alcohol, 0.9% sodium alginate, 3.8% Ludox, 0.9% neopelex, surplus are water, by above-mentioned component weigh batching;
2) earlier 200-280 order sodium bentonite, 200-280 order mullite powder, 200-280 order alumina powder are added in the edge runner by said ratio, do and mix 20min;
3) add sodium alginate, neopelex, polyethylene alcohol and water successively by said ratio then, mix and grind 210min;
4) add Ludox by said ratio then and mix stone roller 35min;
The coating that 5) will mix at last behind the stone roller sieves through 90 mesh, removes impurity.
Applicant's statement; The present invention explains detailed process equipment of the present invention and technological process through the foregoing description; But the present invention is not limited to above-mentioned detailed process equipment and technological process, does not mean that promptly the present invention must rely on above-mentioned detailed process equipment and technological process could be implemented.The person of ordinary skill in the field should understand, and to any improvement of the present invention, to the interpolation of the equivalence replacement of each raw material of product of the present invention and auxiliary element, the selection of concrete mode etc., all drops within protection scope of the present invention and the open scope.
Claims (1)
1. an aluminum alloy low-pressure casting metal mold is characterized in that with the preparation method of coating, comprises the steps:
1) composition of coating is; In mass fraction: 35-45% mullite powder, 5-10% alumina powder, 5.5-6.5% sodium bentonite; 2.0-2.5% polyvinyl alcohol, 0.8-1.0% sodium alginate, 3.5-4.0% Ludox, 0.8-1.0% neopelex, surplus are water, by above-mentioned component weigh batching;
2) earlier 200-280 order sodium bentonite, 200-280 order mullite powder, 200-280 order alumina powder are added in the edge runner by said ratio, do and mix 15-25min;
3) add sodium alginate, neopelex, polyethylene alcohol and water successively by said ratio then, mix and grind 180-240min;
4) add Ludox by said ratio then and mix stone roller 30-40min;
The coating that 5) will mix at last behind the stone roller sieves through the 80-100 mesh, removes impurity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110307627.8A CN102366814B (en) | 2011-10-11 | 2011-10-11 | A kind of preparation method of coating for metal mold used in aluminum alloy low pressure casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110307627.8A CN102366814B (en) | 2011-10-11 | 2011-10-11 | A kind of preparation method of coating for metal mold used in aluminum alloy low pressure casting |
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| Publication Number | Publication Date |
|---|---|
| CN102366814A true CN102366814A (en) | 2012-03-07 |
| CN102366814B CN102366814B (en) | 2016-01-20 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102617159A (en) * | 2012-03-15 | 2012-08-01 | 苏州伊索来特耐火纤维有限公司 | High-wind speed resistance capacity wear-resistant fiber surface coating |
| CN102989998A (en) * | 2012-12-25 | 2013-03-27 | 常州大学 | Chilling alcoholic-group coating absorbing heat by using melting, sublimation and vaporization of substances |
| CN106077445A (en) * | 2016-07-28 | 2016-11-09 | 华中科技大学 | A kind of aluminum alloy low-pressure casting chill coating and preparation method thereof |
| CN107243594A (en) * | 2017-06-14 | 2017-10-13 | 合肥市旺友门窗有限公司 | A kind of used in aluminium alloy casting insulating refractory coating and preparation method thereof |
| CN109261891A (en) * | 2018-09-04 | 2019-01-25 | 安徽惠明机械制造有限公司 | A kind of compression mod coating and preparation method thereof |
| CN109290514A (en) * | 2018-11-23 | 2019-02-01 | 贵州安吉航空精密铸造有限责任公司 | A kind of low pressure core coating and preparation method thereof |
| KR20210035774A (en) * | 2019-09-20 | 2021-04-01 | 콘풍 매테리얼스 인터네셔널 컴퍼니 리미티드 | High-purity aluminum smelting and casting coating material and its manufacturing method and use |
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| CN106077445B (en) * | 2016-07-28 | 2018-05-04 | 华中科技大学 | A kind of aluminum alloy low-pressure casting chill coating and preparation method thereof |
| CN107243594A (en) * | 2017-06-14 | 2017-10-13 | 合肥市旺友门窗有限公司 | A kind of used in aluminium alloy casting insulating refractory coating and preparation method thereof |
| CN109261891A (en) * | 2018-09-04 | 2019-01-25 | 安徽惠明机械制造有限公司 | A kind of compression mod coating and preparation method thereof |
| CN109261891B (en) * | 2018-09-04 | 2020-07-31 | 安徽惠明机械制造有限公司 | Coating for die-casting mold and preparation method thereof |
| CN109290514A (en) * | 2018-11-23 | 2019-02-01 | 贵州安吉航空精密铸造有限责任公司 | A kind of low pressure core coating and preparation method thereof |
| CN109290514B (en) * | 2018-11-23 | 2020-06-23 | 贵州安吉航空精密铸造有限责任公司 | Low-pressure sand core coating and preparation method thereof |
| KR20210035774A (en) * | 2019-09-20 | 2021-04-01 | 콘풍 매테리얼스 인터네셔널 컴퍼니 리미티드 | High-purity aluminum smelting and casting coating material and its manufacturing method and use |
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