CN101444826A - Special coating for full mold casting - Google Patents
Special coating for full mold casting Download PDFInfo
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- CN101444826A CN101444826A CNA2007101586265A CN200710158626A CN101444826A CN 101444826 A CN101444826 A CN 101444826A CN A2007101586265 A CNA2007101586265 A CN A2007101586265A CN 200710158626 A CN200710158626 A CN 200710158626A CN 101444826 A CN101444826 A CN 101444826A
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- casting
- coating
- full mold
- special coating
- mold casting
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Abstract
A special coating for full mold casting is characterized in that the coating is prepared by mixing and stirring components consisting of sodium borate, phosphoric acid, silica sol, ethyl acetate, polypropylene acyl carboxy, carboxymethyl cellulose sodium and absorbent according to the weight ratio of 10:2-3:6-9:8-10:8-10:2-6:5-8. The special coating for full mold casting has the advantages that the coating property and thixotropy are quite strong, and the casting can effectively absorb liquid products produced by foam plastic model pyrolysis during the using process, thus reducing the porosity of a casting part below 0.2 percent, greatly improving the precision of the size of the casting part, and reducing the finishing allowance of blanks of the casting part.
Description
Technical field
The present invention relates to a kind of special coating for full mold casting, belong to a kind of material modification chemical material technical field.
Background technology
In the cavityless casting industry, the surface coating of full mold is one of cavityless casting key technology.In the prior art, cavityless casting aluminum component pore is a great problem that cavityless casting is promoted.In order to reduce the pore of aluminium casting, the performance of aluminium alloy lost foam coating is most important.Number of patent application is 01142612.8 patent of invention specification disclosed " casting paint for adsorptive lost Al-alloy mould and preparation method thereof ", it is the paint specially for disappearing cast mold that diatomite, pearl essence, mica powder, silicone fluid, white glue with vinyl, polyacrylamide carboxylic, carboxymethyl cellulose sodium and adsorbent are made that the coatings chemistry component is provided, and has all that coating is rare excessively, a shortcoming such as poor adhesive force, gas permeability are bad.
Summary of the invention
The object of the present invention is to provide a kind of special coating for full mold casting, this paint adhesion is strong, good permeability, easily brushing.
The present invention is that above-mentioned purpose is to be achieved by the following technical programs.
A kind of special coating for full mold casting, it is characterized in that this coating is Boratex, phosphoric acid, Ludox by component, ethyl acetate, polyacrylamide carboxylic, carboxymethyl cellulose sodium and adsorbent mix, stir and make according to weight ratio 10:2～3:6～9:8～10:8～10:2～6:5～8.
Generally, the optimum weight ratio of each component is in the above-mentioned special coating for full mold casting: Boratex: phosphoric acid: Ludox: ethyl acetate: the polyacrylamide carboxylic: the L carboxymethyl cellulose sodium: adsorbent 10:3:9:8:10:5:5.
Special coating for full mold casting provided by the invention, have stronger extension property and the thixotropy of being coated with, the liquid product that produces of absorbent foam plastics apperance pyrolysis effectively in use, the porosity of foundry goods is dropped to below 0.2%, and casting dimension accurately improves greatly, and the full-size tolerance is no more than 0.1 millimeter, do not have to drape over one's shoulders and meet, make the surface smoothness of spray can reach 4～5 grades, and it is little to have reduced the allowance of spray, greatly reduces production cost.Particularly in coating, press certain weight ratio and add Boratex, phosphoric acid and Ludox, significantly technique effect is arranged for improving ADHESION OF PAINTS power and gas permeability.
Introduce the specific embodiment of the invention below.
The specific embodiment
Embodiment one, a kind of special coating for full mold casting, it is characterized in that this coating is Boratex, phosphoric acid, Ludox by component, ethyl acetate, polyacrylamide carboxylic, carboxymethyl cellulose sodium and adsorbent mix, stir and make according to weight ratio 10:2～3:6～9:8～10:8～10:2～6:5～8.
Embodiment one: the optimum weight ratio of each component is in the above-mentioned special coating for full mold casting: Boratex: phosphoric acid: Ludox: ethyl acetate: the polyacrylamide carboxylic: the L carboxymethyl cellulose sodium: adsorbent 10:3:9:8:10:5:5.
Claims (2)
1, a kind of special coating for full mold casting, it is characterized in that this coating is Boratex, phosphoric acid, Ludox by component, ethyl acetate, polyacrylamide carboxylic, carboxymethyl cellulose sodium and adsorbent mix, stir and make according to weight ratio 10:2～3:6～9:8～10:8～10:2～6:5～8.
2, special coating for full mold casting according to claim 1 is characterized in that said coating composition Boratex, phosphoric acid, Ludox, the weight ratio 10:3:9:8:10:5:5 of ethyl acetate, polyacrylamide carboxylic, carboxymethyl cellulose sodium and adsorbent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101586265A CN101444826A (en) | 2007-11-27 | 2007-11-27 | Special coating for full mold casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101586265A CN101444826A (en) | 2007-11-27 | 2007-11-27 | Special coating for full mold casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101444826A true CN101444826A (en) | 2009-06-03 |
Family
ID=40740876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101586265A Pending CN101444826A (en) | 2007-11-27 | 2007-11-27 | Special coating for full mold casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101444826A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102133626A (en) * | 2010-01-22 | 2011-07-27 | 丰田自动车株式会社 | Mold, solidified body, and methods of manufacture thereof |
| CN102397983A (en) * | 2011-11-29 | 2012-04-04 | 朱小英 | Full mold casing coating |
| CN103100658A (en) * | 2012-12-11 | 2013-05-15 | 芜湖恒坤汽车部件有限公司 | Method for preparing solid-mold casting coating material for cast iron |
-
2007
- 2007-11-27 CN CNA2007101586265A patent/CN101444826A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102133626A (en) * | 2010-01-22 | 2011-07-27 | 丰田自动车株式会社 | Mold, solidified body, and methods of manufacture thereof |
| US8646745B2 (en) | 2010-01-22 | 2014-02-11 | Toyota Jidosha Kabushiki Kaisha | Mold, solidified body, and methods of manufacture thereof |
| CN102397983A (en) * | 2011-11-29 | 2012-04-04 | 朱小英 | Full mold casing coating |
| CN102397983B (en) * | 2011-11-29 | 2013-03-20 | 宁波兴柯汽车新材料科技有限公司 | Full mold casing coating |
| CN103100658A (en) * | 2012-12-11 | 2013-05-15 | 芜湖恒坤汽车部件有限公司 | Method for preparing solid-mold casting coating material for cast iron |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090603 |