CN102806305A - Preparation method of dope for metal type casting of magnesium alloy thin-walled component - Google Patents
Preparation method of dope for metal type casting of magnesium alloy thin-walled component Download PDFInfo
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- CN102806305A CN102806305A CN201210305826XA CN201210305826A CN102806305A CN 102806305 A CN102806305 A CN 102806305A CN 201210305826X A CN201210305826X A CN 201210305826XA CN 201210305826 A CN201210305826 A CN 201210305826A CN 102806305 A CN102806305 A CN 102806305A
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- alcohol
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- 229910000861 Mg alloy Inorganic materials 0.000 title claims abstract description 20
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 238000005266 casting Methods 0.000 title abstract description 15
- 229910052751 metal Inorganic materials 0.000 title abstract description 5
- 239000002184 metal Substances 0.000 title abstract description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 41
- 239000000843 powder Substances 0.000 claims abstract description 38
- 238000003756 stirring Methods 0.000 claims abstract description 24
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 23
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 23
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000010425 asbestos Substances 0.000 claims abstract description 14
- 229910052895 riebeckite Inorganic materials 0.000 claims abstract description 14
- 239000000440 bentonite Substances 0.000 claims abstract description 13
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 13
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 13
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 8
- 239000000725 suspension Substances 0.000 claims abstract description 7
- 238000005303 weighing Methods 0.000 claims abstract description 6
- 238000002156 mixing Methods 0.000 claims abstract description 4
- 239000011248 coating agent Substances 0.000 claims description 29
- 238000000576 coating method Methods 0.000 claims description 29
- 238000010120 permanent mold casting Methods 0.000 claims description 16
- HTSGKJQDMSTCGS-UHFFFAOYSA-N 1,4-bis(4-chlorophenyl)-2-(4-methylphenyl)sulfonylbutane-1,4-dione Chemical compound C1=CC(C)=CC=C1S(=O)(=O)C(C(=O)C=1C=CC(Cl)=CC=1)CC(=O)C1=CC=C(Cl)C=C1 HTSGKJQDMSTCGS-UHFFFAOYSA-N 0.000 claims description 10
- 150000001875 compounds Chemical class 0.000 claims description 10
- 229910052845 zircon Inorganic materials 0.000 claims description 10
- 239000012467 final product Substances 0.000 claims description 5
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 5
- 239000000203 mixture Substances 0.000 abstract description 8
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract 5
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 abstract 2
- 229910000838 Al alloy Inorganic materials 0.000 description 11
- 238000000034 method Methods 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 230000003434 inspiratory effect Effects 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 238000011089 mechanical engineering Methods 0.000 description 1
- 229910021652 non-ferrous alloy Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical group [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
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- Mold Materials And Core Materials (AREA)
Abstract
The invention discloses a preparation method of a dope for metal type casting of a magnesium alloy thin-walled component. The dope comprises the following components in percentage by weight: 1.5 to 2.5 percent of kieselguhr, 2 to 3 percent of magnesium oxide powder, 1.2 to 1.8 percent of titanium dioxide powder, 1 to 2 percent of zirconite powder, 1.5 to 2.5 percent of bentonite, 2 to 4 percent of asbestos powder, 1.2 to 1.4 percent of silica sol and the balance of alcohol. The preparation method comprises the following steps of 1) weighing the materials according to the proportion; 2) taking 30 percent of the total alcohol, adding the bentonite into the alcohol, stirring until the bentonite is suspended, sequentially adding the magnesium oxide powder, the titanium dioxide powder and the zirconite powder into the suspension, and stirring the suspension for about 15 to 25 minutes to uniformly mix the materials and obtain a mixture I; 3) mixing and stirring the kieselguhr, the asbestos powder and the silica sol for about 10 to 20 minutes, adding 20 percent of the total alcohol into the mixture, and stirring the materials for about 5 to 15 minutes to uniformly mix the materials and obtain a mixture II; and 4) mixing the mixture I, the mixture II and 50 percent of residual alcohol, and stirring the materials for about 20 to 30 minutes to obtain the dope.
Description
Technical field
The present invention relates to casting field, particularly a kind of Mg alloy thin wall spare permanent mold casting is with the preparation method of coating.
Background technology
Diecasting is claimed in permanent mold casting again, and it is that liquid metals is poured into metal mold, to obtain a kind of casting method of foundry goods.Casting mold is to process with metal, can use repeatedly (hundreds of arrives several thousand times) repeatedly.Permanent mold casting is fertile foundry goods at present, in weight and vpg connection certain restriction is arranged, can not be too big like the weight of foundry goods; Wall thickness also has restriction, and less casting section thickness also is difficult to cast out.
Mg alloy thin wall spare is fast owing to cooling velocity in the permanent mold casting process; In foundry goods, form defectives such as cold shut, pin hole and shrinkage porosite easily and foundry goods is scrapped; Therefore, the quality that how to improve Mg alloy thin wall permanent mold casting foundry goods is the problem that the casting research worker is devoted to study always.The patent No. is that the Chinese invention patent " enthalpy changing coating is used in aluminium alloy thin-walled permanent mold casting " of ZL03108033.2 has proposed a kind of enthalpy changing coating that is applicable to aluminium alloy thin-walled permanent mold casting; Exothermic reaction through coating; And improve aluminium alloy thin-walled mold-filling capacity; Can solve the cold shut that forms in the foundry goods and the phenomenon of misrun, thereby improve aluminium alloy thin-walled quality.Simultaneously, because the exothermic reaction of coating also can alleviate aluminium alloy thin-walled shrinkage defect to a certain extent.But because the carrier fluid of this enthalpy changing coating is a water; In the exothermal reaction process of coating; Water is difficult in the thin-walled die cavity, discharging at once owing to the heat of emitting produces gasification, assembles at thin wall component easily; Thereby make aluminium alloy in casting process, these aqueous vapors are absorbed in the aluminium alloy castings and form needle pore defect." casting handbook the 3rd volume (the casting nonferrous alloy, China Machine Press is compiled by casting branch of Chinese Mechanical Engineering Society; A kind of coating of aluminium alloy thin-walled foundry goods die cavity working face is proposed 2006); Its main refractory aggregate composition is a zinc oxide, titanium dioxide, flake asbestos; Binding agent is a waterglass, and carrier fluid is a water.
Publication number is that the Chinese invention patent application of CN102145372A discloses and also discloses a kind of aluminium alloy thin-walled permanent mold casting and use coating.
It is thus clear that; The coating of using to the thin-wall part metal mold in the prior art all is to be directed against Birmasil; And to magnesium alloy rarely have report because the nature difference of magnesium alloy and aluminium alloy causes and can not the thin-wall part metal-type casting coating that be used for aluminium alloy of the prior art be directly applied to magnesium alloy; Therefore, need a kind of permanent mold casting that is suitable for Mg alloy thin wall spare of exploitation badly and use coating.
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 Mg alloy thin wall spare permanent mold casting with coating, makes the casting flaw of the Mg alloy thin wall spare that this coating of use is cast reduce.
For realizing above-mentioned purpose, the technical scheme that the present invention adopts is following:
A kind of Mg alloy thin wall spare permanent mold casting is with the preparation method of coating, and said coating is made up of following component by weight percentage: diatomite 1.5-2.5%, magnesia powder 2-3%; Titanium dioxide powder 1.2-1.8%, zircon powder 1-2%, bentonite 1.5-2.5%; Flake asbestos 2-4%; Ludox 1.2-1.4%, surplus is an alcohol, described preparation method comprises the steps:
1) carries out weighing and burden by said ratio;
2) get the alcohol of alcohol gross weight 30%, add bentonite, stir and make its suspension, add MgO powder, TiO then successively
2Powder and zircon powder, stir about 15-25 minute, make it even, get compound I;
3) with diatomite, flake asbestos and Ludox mixing stir about 10-20 minute, add the alcohol of alcohol gross weight 20%, stir about 5-15 minute again, it is mixed, compound II;
4) compound I and compound II are mixed with the alcohol of remaining alcohol gross weight 50%, got final product in stir about 20-30 minute then.
The present invention has following beneficial effect:
1) the present invention adopts diatomite, flake asbestos and magnesium oxide particle matched combined, and aggregate good heat insulating, fire-resistant intensity height make the cavity filling of magnesium alloy to improve, and feeding is good, thereby reduces defective.
2) added proper amount of bentone in the coating, made it have certain suspendability, it is good to make that this coating is coated with extension property, and is prone to preserve.
3) carrier fluid of coating is an alcohol, contains the moisture of minute quantity, and volatilization is exceedingly fast; Be difficult in the thin-walled die cavity, forming the gathering of gas; Significantly reduce the inspiratory capacity in the Mg alloy thin wall casting pouring process, thereby reduced the defect level of pin hole, improved the quality of Mg alloy thin wall foundry goods.
4) preparation method is sub-category, mixes step by step, makes to be prone to the performance stable homogeneous of coating use and store.
The specific embodiment
Embodiment one
A kind of Mg alloy thin wall spare permanent mold casting is with the preparation method of coating, and said coating is made up of following component by weight percentage: diatomite 1.5%, magnesia powder 3%; Titanium dioxide powder 1.2%, zircon powder 2%, bentonite 1.5%; Flake asbestos 4%; Ludox 1.2%, surplus are alcohol, and described preparation method comprises the steps:
1) carries out weighing and burden by said ratio;
2) get the alcohol of alcohol gross weight 30%, add bentonite, stir and make its suspension, add MgO powder, TiO then successively
2Powder and zircon powder stirred 15 minutes, made it even, got compound I;
3) diatomite, flake asbestos and Ludox are mixed stirring 20 minutes, add the alcohol of alcohol gross weight 20%, stirred again 5 minutes, it is mixed, get compound II;
4) compound I and compound II are mixed with the alcohol of remaining alcohol gross weight 50%, stir then and got final product in 30 minutes.
Embodiment two
A kind of Mg alloy thin wall spare permanent mold casting is with the preparation method of coating, and said coating is made up of following component by weight percentage: diatomite 2.5%, magnesia powder 2%; Titanium dioxide powder 1.8%, zircon powder 1%, bentonite 2.5%; Flake asbestos 2%; Ludox 1.4%, surplus are alcohol, and described preparation method comprises the steps:
1) carries out weighing and burden by said ratio;
2) get the alcohol of alcohol gross weight 30%, add bentonite, stir and make its suspension, add MgO powder, TiO then successively
2Powder and zircon powder stirred 25 minutes, made it even, got compound I;
3) diatomite, flake asbestos and Ludox are mixed stirring 10 minutes, add the alcohol of alcohol gross weight 20%, stirred again 15 minutes, it is mixed, get compound II;
4) compound I and compound II are mixed with the alcohol of remaining alcohol gross weight 50%, stir then and got final product in 20 minutes.
Embodiment three
A kind of Mg alloy thin wall spare permanent mold casting is with the preparation method of coating, and said coating is made up of following component by weight percentage: diatomite 2.0%, magnesia powder 2.5%; Titanium dioxide powder 1.5%, zircon powder 1.5%, bentonite 2.0%; Flake asbestos 3.0%; Ludox 1.3%, surplus are alcohol, and described preparation method comprises the steps:
1) carries out weighing and burden by said ratio;
2) get the alcohol of alcohol gross weight 30%, add bentonite, stir and make its suspension, add MgO powder, TiO then successively
2Powder and zircon powder stirred 20 minutes, made it even, got compound I;
3) diatomite, flake asbestos and Ludox are mixed stirring 15 minutes, add the alcohol of alcohol gross weight 20%, stirred again 10 minutes, it is mixed, get compound II;
4) compound I and compound II are mixed with the alcohol of remaining alcohol gross weight 50%, stir then and got final product in 25 minutes.
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. a Mg alloy thin wall spare permanent mold casting is characterized in that said coating is made up of following component by weight percentage: diatomite 1.5-2.5% with the preparation method of coating; Magnesia powder 2-3%, titanium dioxide powder 1.2-1.8%, zircon powder 1-2%; Bentonite 1.5-2.5%, flake asbestos 2-4%, Ludox 1.2-1.4%; Surplus is an alcohol, and described preparation method comprises the steps:
1) carries out weighing and burden by said ratio;
2) get the alcohol of alcohol gross weight 30%, add bentonite, stir and make its suspension, add MgO powder, TiO then successively
2Powder and zircon powder, stir about 15-25 minute, make it even, get compound I;
3) with diatomite, flake asbestos and Ludox mixing stir about 10-20 minute, add the alcohol of alcohol gross weight 20%, stir about 5-15 minute again, it is mixed, compound II;
4) compound I and compound II are mixed with the alcohol of remaining alcohol gross weight 50%, got final product in stir about 20-30 minute then.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210305826.XA CN102806305B (en) | 2012-08-24 | 2012-08-24 | Preparation method of dope for metal type casting of magnesium alloy thin-walled component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210305826.XA CN102806305B (en) | 2012-08-24 | 2012-08-24 | Preparation method of dope for metal type casting of magnesium alloy thin-walled component |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102806305A true CN102806305A (en) | 2012-12-05 |
| CN102806305B CN102806305B (en) | 2015-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210305826.XA Active CN102806305B (en) | 2012-08-24 | 2012-08-24 | Preparation method of dope for metal type casting of magnesium alloy thin-walled component |
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| Country | Link |
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| CN (1) | CN102806305B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113333666A (en) * | 2021-06-08 | 2021-09-03 | 安徽信息工程学院 | Wear-resistant casting coating composition and preparation method thereof |
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|---|---|---|---|---|
| CN1390661A (en) * | 2002-07-25 | 2003-01-15 | 上海交通大学 | Paint for casting Mg alloy with metal mould and its preparing process |
| CN101342570A (en) * | 2007-07-12 | 2009-01-14 | 中宏（天津）实业有限公司 | Preparation method for magnesium alloy cast paint |
| JP4309712B2 (en) * | 2003-07-30 | 2009-08-05 | 株式会社木村鋳造所 | Full mold casting method |
| CN101658899A (en) * | 2009-09-17 | 2010-03-03 | 上海交通大学 | Magnesium-alloy metal-type casting coating and preparation method thereof |
| CN101985156A (en) * | 2010-11-08 | 2011-03-16 | 哈尔滨理工大学 | Alcohol-based coating for magnesium alloy casting and processing method thereof |
| CN102145372A (en) * | 2011-03-15 | 2011-08-10 | 上海爱尔思轻合金制品有限公司 | Coating for metal mold casting of aluminum alloy thin-walled piece and preparation method and coating method thereof |
| JP2011167739A (en) * | 2010-02-19 | 2011-09-01 | Kyodo Yushi Co Ltd | Nonferrous metal die casting mold release agent |
| CN102430701A (en) * | 2011-11-29 | 2012-05-02 | 朱小英 | Coating for metal low pressure casting of magnesium alloy |
-
2012
- 2012-08-24 CN CN201210305826.XA patent/CN102806305B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1390661A (en) * | 2002-07-25 | 2003-01-15 | 上海交通大学 | Paint for casting Mg alloy with metal mould and its preparing process |
| JP4309712B2 (en) * | 2003-07-30 | 2009-08-05 | 株式会社木村鋳造所 | Full mold casting method |
| CN101342570A (en) * | 2007-07-12 | 2009-01-14 | 中宏（天津）实业有限公司 | Preparation method for magnesium alloy cast paint |
| CN101658899A (en) * | 2009-09-17 | 2010-03-03 | 上海交通大学 | Magnesium-alloy metal-type casting coating and preparation method thereof |
| JP2011167739A (en) * | 2010-02-19 | 2011-09-01 | Kyodo Yushi Co Ltd | Nonferrous metal die casting mold release agent |
| CN101985156A (en) * | 2010-11-08 | 2011-03-16 | 哈尔滨理工大学 | Alcohol-based coating for magnesium alloy casting and processing method thereof |
| CN102145372A (en) * | 2011-03-15 | 2011-08-10 | 上海爱尔思轻合金制品有限公司 | Coating for metal mold casting of aluminum alloy thin-walled piece and preparation method and coating method thereof |
| CN102430701A (en) * | 2011-11-29 | 2012-05-02 | 朱小英 | Coating for metal low pressure casting of magnesium alloy |
Non-Patent Citations (1)
| Title |
|---|
| 张亮: "《镁合金金属型涂料的研究》", 《中国优秀硕士学位论文全文数据库工程科技I辑2010年第10期》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113333666A (en) * | 2021-06-08 | 2021-09-03 | 安徽信息工程学院 | Wear-resistant casting coating composition and preparation method thereof |
| CN113333666B (en) * | 2021-06-08 | 2022-08-19 | 安徽信息工程学院 | Wear-resistant casting coating composition and preparation method thereof |
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| Publication number | Publication date |
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| CN102806305B (en) | 2015-02-25 |
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