CN101879577A - Water glass sand modified collapsing agent and preparation method thereof - Google Patents
Water glass sand modified collapsing agent and preparation method thereof Download PDFInfo
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- CN101879577A CN101879577A CN 201010202779 CN201010202779A CN101879577A CN 101879577 A CN101879577 A CN 101879577A CN 201010202779 CN201010202779 CN 201010202779 CN 201010202779 A CN201010202779 A CN 201010202779A CN 101879577 A CN101879577 A CN 101879577A
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- collapsing agent
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Abstract
The invention relates to a collapsing agent and a preparation method thereof, in particular to a water glass sand modified collapsing agent and the preparation method thereof. The water glass sand modified collapsing agent is characterized by being prepared from the following components in percentage by weight: 1 to 3 percent of high temperature collapsing substance, 92 to 95 percent of low temperature collapsing substance and 3 to 5 percent of strength adhesion promoter. The preparation method of the water glass sand modified collapsing agent is characterized by comprising the following steps of: adding the high temperature collapsing substance and the low temperature collapsing substance into a stirring tank for full mixing during production; adding the strength adhesion promoter into the stirring tank after 2 to 3 hours; and mixing the mixture for 1 to 2 hours to obtain the collapsing agent. Therefore, the collapsing agent and the preparation method have the advantages of overcoming the defect of conventional 'water explosion blast cleaning', fulfilling the aim of dry method mechanical vibration shakeout, solving various problems of crack, low glossiness, more air pores and the like of a casting, greatly improving the casting quality and reducing the rejection ratio.
Description
(1) technical field
The present invention relates to a kind of defeated and dispersed dose and preparation method thereof, particularly a kind of water glass sand modified collapsing agent and preparation method thereof.
(2) background technology
Water-glass sand is as casting binder, it is wide that it has the source, price is low, the intensity height, gas forming amount is few, smokelessly nontoxic after the cast, harmless, free from environmental pollution, energy savings, certain plasticity is arranged during high temperature, can prevent the crackle of thin-section casting, its hardening process is simple simultaneously, can alleviate moulding (core) labour intensity, shorten advantages such as production cycle significantly, but because its collapsibility performance is poor, cause the sand removal difficulty, return sand to be difficult for reuse, therefore it can not extensive use on Foundry Production, domestic in recent decades in the application and development of synthetic resin, partly replaced water-glass sand, but organic resin costs an arm and a leg, harmful, China's production of resins can't be satisfied the demand for the moment in addition, in the case, although water-glass sand cast cleaning difficulty, those can not mainly use water-glass sand with the big-and-middle-sized foundry goods of wet type.
Be widely used in the particularly production of steel-casting of domestic and international Foundry Production with water-glass sand as the waterglass casting technique of binding agent, it is simple that this method has equipment, floor space is little, the formative technology processing ease, the core gas forming amount is few, the foundry goods gas defects is few, can make the high accuracy casting mold with wooden model to the unit small lot batch manufacture, nontoxic, tasteless, abundant raw materials, the excellent honest and clean advantage of price, but it is poor to exist sodium silicate sand collapsibility in long-term use, be difficult to cleaning, regenerating used reuse difficulty, consume problems such as a large amount of fresh sands, seriously restricted the development of water-glass sand technology.Traditional defeated and dispersed dose is that cost solves collapsibility with sand mold intensity, causes the further think ofization of grittiness energy, and " water explosition blast cleaning " technology can cause foundry goods inside to have microfissure, and railway speed increase is restricted.
(3) summary of the invention
The present invention provides water glass sand modified collapsing agent that a kind of collapsibility is good, percent defective is low and preparation method thereof in order to remedy the deficiencies in the prior art.
The present invention is achieved through the following technical solutions:
A kind of water glass sand modified collapsing agent is characterized in that: made by following components in weight percentage:
The defeated and dispersed material 1%-3% of high temperature
The defeated and dispersed material 92%-95% of low temperature
Intensity adhesion promoter 3%-5%.
The defeated and dispersed material of described high temperature is aluminium oxide, iron oxide, manganese monoxide or cupric oxide; The defeated and dispersed material of low temperature is a hydrogenated starch hydrolysate; The intensity adhesion promoter is POLYPROPYLENE GLYCOL or polyvinyl alcohol.
The preparation method of water glass sand modified collapsing agent of the present invention comprises the steps:
In process of production, add defeated and dispersed material of high temperature and the defeated and dispersed material of low temperature earlier and in agitator tank, mix fully, add the intensity adhesion promoter after 2-3 hour again, mix getting final product in 1-2 hour.
Water glass sand modified collapsing agent is three kinds of granular materials that raw material mixes.
The key technical indexes of this product
Under the normal sand condition: 24 hours dry-pressing intensity 〉=3.0MPa
100 ℃ of retained strength≤0.3MPa
This product just passes through users such as two or seven carshops of the Ministry of Railways, Taiyuan locomotive works, strain state, Hunan carshop under the condition of the test manufacture of small lot feedback proves.These properties of product are good, change on 8A bolster, bogie side frame and commentaries on classics 8G bolster, the bogie side frame at rolling stock and use, and casting section does not have casting flaws such as burning into sand, flawless, pore-free, and the section packing meets the requirement of TB/T2239, and all indexs meet the ministry standard regulation.
The several prods performance comparison
| Water glass sand modified collapsing agent of the present invention | Common disperser for water-glass sand | The product of foreign corporation | |
| Dry-pressing intensity (MPa) | ??≥3.0 | ??≥2.0 | ??≥2.5 |
| Retained strength (MPa) | ??≤0.3 | ??≤1.5 | ??≤1.0 |
| Sand removal | The dry coal-falling sand foundry goods does not have microfissure | The water explosition blast cleaning foundry goods has microfissure | Water-soluble sand removal has microfissure |
| Gas forming amount (ML/g) | ??≤12 | ??≤16 | ??≤15 |
| Collapsibility | Good | Generally | Generally |
| The labour intensity percent defective | Low, using water wisely | High | Generally |
| Price | Moderate | Low | High |
The invention has the beneficial effects as follows: the defective that has overcome tradition " water explosition blast cleaning ", realized the purpose of dry method mechanical oscillation knockouts, and solved foundry goods problems such as crackle, glossiness is low, pore is many are arranged, improved casting quality greatly, reduced percent defective.
(4) specific embodiment
Embodiment 1:
The preparation method of water glass sand modified collapsing agent comprises the steps:
In process of production, add 2 kilograms aluminium oxide and 93 kilograms hydrogenated starch hydrolysate earlier and in agitator tank, mix fully, add 5 kilograms polyvinyl alcohol after 2.5 hours again, mix getting final product in 1.5 hours.
Embodiment 2:
The preparation method of water glass sand modified collapsing agent comprises the steps:
In process of production, add 1 kilogram iron oxide and 95 kilograms hydrogenated starch hydrolysate earlier and in agitator tank, mix fully, add 4 kilograms POLYPROPYLENE GLYCOL after 2 hours again, mix getting final product in 1 hour.
Embodiment 3:
The preparation method of water glass sand modified collapsing agent comprises the steps:
In process of production, add 3 kilograms cupric oxide and 92 kilograms hydrogenated starch hydrolysate earlier and in agitator tank, mix fully, add 5 kilograms polyvinyl alcohol after 3 hours again, mix getting final product in 2 hours.
Embodiment 4:
Water glass sand modified collapsing agent: the component by following weight is made:
2 kilograms of iron oxide, 93 kilograms of hydrogenated starch hydrolysates, 5 kilograms of polyvinyl alcohol.
Embodiment 5:
Water glass sand modified collapsing agent: the component by following weight is made:
3 kilograms of manganese monoxides, 92 kilograms of hydrogenated starch hydrolysates, 5 kilograms of POLYPROPYLENE GLYCOLs.
Claims (5)
1. water glass sand modified collapsing agent is characterized in that: made by following components in weight percentage:
The defeated and dispersed material 1%-3% of high temperature
The defeated and dispersed material 92%-95% of low temperature
Intensity adhesion promoter 3%-5%.
2. water glass sand modified collapsing agent according to claim 1 is characterized in that: the defeated and dispersed material of described high temperature is aluminium oxide, iron oxide, manganese monoxide or cupric oxide.
3. water glass sand modified collapsing agent according to claim 1 is characterized in that: the defeated and dispersed material of described low temperature is a hydrogenated starch hydrolysate.
4. water glass sand modified collapsing agent according to claim 1 is characterized in that: described intensity adhesion promoter is POLYPROPYLENE GLYCOL or polyvinyl alcohol.
5. the preparation method of water glass sand modified collapsing agent according to claim 1 is characterized in that: comprise the steps:
In process of production, add defeated and dispersed material of high temperature and the defeated and dispersed material of low temperature earlier and in agitator tank, mix fully, add the intensity adhesion promoter after 2-3 hour again, mix getting final product in 1-2 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102027797A CN101879577B (en) | 2010-06-18 | 2010-06-18 | Water glass sand modified collapsing agent and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102027797A CN101879577B (en) | 2010-06-18 | 2010-06-18 | Water glass sand modified collapsing agent and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN101879577A true CN101879577A (en) | 2010-11-10 |
| CN101879577B CN101879577B (en) | 2012-11-21 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102366812A (en) * | 2011-10-11 | 2012-03-07 | 许立新 | Preparation method for sodium silicate sand used for casting |
| CN103817287A (en) * | 2014-02-27 | 2014-05-28 | 常熟市伟恒模具铸造有限公司 | Glass bottle die casting piece manufacturing process cyclically using molding sand |
| CN104259379A (en) * | 2014-09-30 | 2015-01-07 | 济南圣泉集团股份有限公司 | Collapsibility enhancer for sodium silicate-bonded sand |
| CN105855455A (en) * | 2016-05-30 | 2016-08-17 | 柳州市柳晶科技有限公司 | Inorganic precoated sand and manufacturing method thereof |
| CN107116175A (en) * | 2017-04-28 | 2017-09-01 | 河南金耐源新材料科技有限公司 | Water glass sand modified dose, modified sodium silicate sand and preparation method |
| CN107175311A (en) * | 2017-06-06 | 2017-09-19 | 山东省科学院新材料研究所 | A kind of sodium silicate sand and the sand mould casting method based on water jet sand removal |
| CN107243592A (en) * | 2017-05-16 | 2017-10-13 | 浙江遂金特种铸造有限公司 | Inorganic nano particle modified waterglass and preparation method thereof |
| CN108655331A (en) * | 2018-06-01 | 2018-10-16 | 平顶山市伟业铸造材料有限公司 | A kind of cold core modifying agent |
| CN109047648A (en) * | 2018-09-26 | 2018-12-21 | 安徽江杰实业有限公司 | A kind of defeated and dispersed reinforcing agent of sodium silicate sand used for casting |
| CN109909443A (en) * | 2019-04-23 | 2019-06-21 | 佛山市博特美陶瓷有限公司 | A kind of preparation method of water-glass sand |
| CN110944768A (en) * | 2017-08-03 | 2020-03-31 | 旭有机材株式会社 | Casting mold material and method for producing same, method for producing casting mold, and method for recycling recycled refractory aggregate |
-
2010
- 2010-06-18 CN CN2010102027797A patent/CN101879577B/en not_active Expired - Fee Related
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102366812A (en) * | 2011-10-11 | 2012-03-07 | 许立新 | Preparation method for sodium silicate sand used for casting |
| CN102366812B (en) * | 2011-10-11 | 2016-01-20 | 华文蔚 | A kind of preparation method of sodium silicate sand used for casting |
| CN103817287A (en) * | 2014-02-27 | 2014-05-28 | 常熟市伟恒模具铸造有限公司 | Glass bottle die casting piece manufacturing process cyclically using molding sand |
| CN103817287B (en) * | 2014-02-27 | 2016-06-22 | 常熟市伟恒模具铸造有限公司 | The Glass tube mould foundry goods manufacturing process that molding sand can be recycled |
| CN104259379A (en) * | 2014-09-30 | 2015-01-07 | 济南圣泉集团股份有限公司 | Collapsibility enhancer for sodium silicate-bonded sand |
| CN105855455A (en) * | 2016-05-30 | 2016-08-17 | 柳州市柳晶科技有限公司 | Inorganic precoated sand and manufacturing method thereof |
| CN107116175A (en) * | 2017-04-28 | 2017-09-01 | 河南金耐源新材料科技有限公司 | Water glass sand modified dose, modified sodium silicate sand and preparation method |
| CN107116175B (en) * | 2017-04-28 | 2018-12-04 | 河南金耐源新材料科技有限公司 | Water glass sand modified dose, modified sodium silicate sand and preparation method |
| CN107243592A (en) * | 2017-05-16 | 2017-10-13 | 浙江遂金特种铸造有限公司 | Inorganic nano particle modified waterglass and preparation method thereof |
| CN107175311A (en) * | 2017-06-06 | 2017-09-19 | 山东省科学院新材料研究所 | A kind of sodium silicate sand and the sand mould casting method based on water jet sand removal |
| CN107175311B (en) * | 2017-06-06 | 2019-02-15 | 山东省科学院新材料研究所 | A kind of sodium silicate sand and the sand mould casting method based on water jet sand removal |
| CN110944768A (en) * | 2017-08-03 | 2020-03-31 | 旭有机材株式会社 | Casting mold material and method for producing same, method for producing casting mold, and method for recycling recycled refractory aggregate |
| CN108655331A (en) * | 2018-06-01 | 2018-10-16 | 平顶山市伟业铸造材料有限公司 | A kind of cold core modifying agent |
| CN109047648A (en) * | 2018-09-26 | 2018-12-21 | 安徽江杰实业有限公司 | A kind of defeated and dispersed reinforcing agent of sodium silicate sand used for casting |
| CN109909443A (en) * | 2019-04-23 | 2019-06-21 | 佛山市博特美陶瓷有限公司 | A kind of preparation method of water-glass sand |
| CN109909443B (en) * | 2019-04-23 | 2020-11-20 | 义乌市君胜科技有限公司 | Preparation method of sodium silicate-bonded sand |
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| CN101879577B (en) | 2012-11-21 |
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Granted publication date: 20121121 Termination date: 20170618 |