CN103192024A - Preparation method of mixed binder of water glass and silicasol - Google Patents
Preparation method of mixed binder of water glass and silicasol Download PDFInfo
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- CN103192024A CN103192024A CN201310108471XA CN201310108471A CN103192024A CN 103192024 A CN103192024 A CN 103192024A CN 201310108471X A CN201310108471X A CN 201310108471XA CN 201310108471 A CN201310108471 A CN 201310108471A CN 103192024 A CN103192024 A CN 103192024A
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- waterglass
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- ludox
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- defoamer
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Abstract
The invention relates to a preparation method of a mixed binder of water glass and silicasol. The preparation method comprises the steps of uniformly mixing water glass, a silicasol solution, fireproof powder and a penetrating agent in a certain weight proportion at the temperature of 15-30 DEG C, adding a defoamer into a mixture to carry out defoaming, and standing for more than 8h finally to obtain the mixed binder of water glass and silicasol. With the adoption of the binder prepared by the method, the powder-liquid ratio of a surface layer coating is high, the back surface of a mold shell is smooth so that the surface finish of a casting is improved, and the strength of the mold shell is also uniform.
Description
Technical field
The present invention relates to a kind of preparation method of binding agent, is in the casting industry specifically, for the manufacture of the preparation method of waterglass and the Ludox hybrid adhesive of shell.
Background technology
As everyone knows, in casting industry, for the manufacture of main three kinds of the binding agent of shell, they are respectively sodium silicate binder, silica sol binder, waterglass and Ludox compound binding agent.Problems such as behind the sodium silicate binder shell, its surface exists that sodium salt gathers, worm hole and surface layer come off make that the fineness of cast(ing) surface is relatively poor, need polish to wait toward contact and process operation.The investment precoat powder liquor ratio of silica sol binder is often lower, and it has corrosiveness to wax-pattern, and behind its shell, the surface is also more coarse, and unevenness is excessive, also can cause the fineness of cast(ing) surface poor.And the principle of waterglass and Ludox compound binding agent shell is, elder generation is at wax-pattern surface-coated Ludox and carry out drying, applies waterglass again, dry shell.But, because the elevated temperature strength of waterglass and Ludox is different, thereby cause the interlaminar strength of this shell inhomogeneous.
Summary of the invention
The problem to be solved in the present invention provides a kind of waterglass and Ludox hybrid adhesive preparation method, adopts the binding agent of this method preparation, investment precoat powder liquor ratio height, and the shell rear surface is comparatively smooth, make cast(ing) surface fineness improve, and investment shell intensity is even.
For addressing the above problem, take following scheme:
Waterglass of the present invention and Ludox hybrid adhesive preparation method's characteristics are may further comprise the steps:
The first step is chosen the raw material of following parts by weight: 88～92 parts of waterglass, 8～12 parts of silicon sol solutions, 125～135 parts of refractory powders, 0.4～0.6 part of bleeding agent, 0.04～0.06 part of defoamer;
Second one, under 15～30 ℃ temperature, waterglass, silicon sol solution, refractory powder and bleeding agent are put into agitator together, stir, obtain mixed liquor;
The 3rd one, under 15～30 ℃ temperature, add defoamer in the mixed liquor and stir;
The 4th one, under 15～30 ℃ temperature, the mixed liquor that will have defoamer was placed more than 8 hours, obtained waterglass and Ludox hybrid adhesive.
Wherein, described refractory powder is silica flour.
Take such scheme, have the following advantages:
Because waterglass of the present invention and Ludox hybrid adhesive preparation method mix waterglass and Ludox, and added a large amount of refractory powders therein, therefore, the powder liquor ratio of its investment precoat is higher, mobile, spreadability is better, the shell rear surface is comparatively smooth, can improve the fineness of cast(ing) surface.And behind waterglass and the Ludox mixed-forming, there is not interlayer structure in its shell, and the elevated temperature strength of shell integral body is comparatively even.
The specific embodiment
Be described in further details below in conjunction with the present invention of embodiment:
Embodiment one
Under 15 ℃ room temperature condition, implement following steps:
The first step is chosen 88 parts of waterglass, 12 parts of silicon sol solutions, 125 parts of silica flours, 0.4 part of bleeding agent, 0.04 part of defoamer.Above-mentioned umber is parts by weight.
Second one, waterglass, silicon sol solution, refractory powder and bleeding agent are put into agitator together, stir, obtain mixed liquor.
The 3rd one, add defoamer in the mixed liquor and stir.
The 4th one, the mixed liquor that will have defoamer was placed more than 8 hours, obtained waterglass and Ludox hybrid adhesive.
Embodiment two
Under 20 ℃ room temperature condition, implement following steps:
The first step is chosen 90 parts of waterglass, 10 parts of silicon sol solutions, 130 parts of silica flours, 0.5 part of bleeding agent, 0.05 part of defoamer.Above-mentioned umber is parts by weight.
Second one, waterglass, silicon sol solution, refractory powder and bleeding agent are put into agitator together, stir, obtain mixed liquor.
The 3rd one, add defoamer in the mixed liquor and stir.
The 4th one, the mixed liquor that will have defoamer was placed more than 8 hours, obtained waterglass and Ludox hybrid adhesive.
Embodiment three
Under 30 ℃ room temperature condition, implement following steps:
The first step is chosen 92 parts of waterglass, 8 parts of silicon sol solutions, 135 parts of silica flours, 0.6 part of bleeding agent, 0.06 part of defoamer.Above-mentioned umber is parts by weight.
Second one, waterglass, silicon sol solution, refractory powder and bleeding agent are put into agitator together, stir, obtain mixed liquor.
The 3rd one, add defoamer in the mixed liquor and stir.
The 4th one, the mixed liquor that will have defoamer was placed more than 8 hours, obtained waterglass and Ludox hybrid adhesive.
Claims (2)
1. waterglass and Ludox hybrid adhesive preparation method is characterized in that may further comprise the steps:
Choose the raw material of following parts by weight earlier:
88～92 parts of waterglass,
8～12 parts of silicon sol solutions,
125～135 parts of refractory powders,
0.4～0.6 part of bleeding agent,
0.04～0.06 part of defoamer;
Then, under 15～30 ℃ temperature, waterglass, silicon sol solution, refractory powder and bleeding agent are put into agitator together, stir, obtain mixed liquor;
Afterwards, under 15～30 ℃ temperature, add defoamer in the mixed liquor and stir;
At last, under 15～30 ℃ temperature, the mixed liquor that will have defoamer was placed more than 8 hours, obtained waterglass and Ludox hybrid adhesive.
2. waterglass as claimed in claim 1 and Ludox hybrid adhesive preparation method is characterized in that described refractory powder is silica flour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310108471XA CN103192024A (en) | 2013-04-01 | 2013-04-01 | Preparation method of mixed binder of water glass and silicasol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310108471XA CN103192024A (en) | 2013-04-01 | 2013-04-01 | Preparation method of mixed binder of water glass and silicasol |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103192024A true CN103192024A (en) | 2013-07-10 |
Family
ID=48714942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310108471XA Pending CN103192024A (en) | 2013-04-01 | 2013-04-01 | Preparation method of mixed binder of water glass and silicasol |
Country Status (1)
| Country | Link |
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| CN (1) | CN103192024A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106141073A (en) * | 2016-08-22 | 2016-11-23 | 浙江遂金特种铸造有限公司 | Ludox component is used in a kind of casting |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86102002A (en) * | 1986-03-20 | 1986-09-10 | 沈阳工业学院 | Ludox, water glass composite shell |
| CN1032503A (en) * | 1987-10-12 | 1989-04-26 | 国家机械工业委员会沈阳铸造研究所 | Compound shell-producing technology using silica-sol wash |
| US20040244943A1 (en) * | 2003-06-04 | 2004-12-09 | American Colloid Company | Acid activated clay for use in foundry sand |
| CN1827256A (en) * | 2006-04-14 | 2006-09-06 | 清华大学 | Method for direct production of core in narrow groove and blind hole of wax mould |
-
2013
- 2013-04-01 CN CN201310108471XA patent/CN103192024A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86102002A (en) * | 1986-03-20 | 1986-09-10 | 沈阳工业学院 | Ludox, water glass composite shell |
| CN1032503A (en) * | 1987-10-12 | 1989-04-26 | 国家机械工业委员会沈阳铸造研究所 | Compound shell-producing technology using silica-sol wash |
| US20040244943A1 (en) * | 2003-06-04 | 2004-12-09 | American Colloid Company | Acid activated clay for use in foundry sand |
| CN1827256A (en) * | 2006-04-14 | 2006-09-06 | 清华大学 | Method for direct production of core in narrow groove and blind hole of wax mould |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106141073A (en) * | 2016-08-22 | 2016-11-23 | 浙江遂金特种铸造有限公司 | Ludox component is used in a kind of casting |
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| SE01 | Entry into force of request for substantive examination | ||
| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130710 |