CN106001389A - Environment-friendly sodium silicate-bonded sand for instrument casting - Google Patents
Environment-friendly sodium silicate-bonded sand for instrument casting Download PDFInfo
- Publication number
- CN106001389A CN106001389A CN201610609969.8A CN201610609969A CN106001389A CN 106001389 A CN106001389 A CN 106001389A CN 201610609969 A CN201610609969 A CN 201610609969A CN 106001389 A CN106001389 A CN 106001389A
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- Prior art keywords
- parts
- sand
- casting
- instrument
- sodium silicate
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
- B22C1/16—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents
- B22C1/18—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of inorganic agents
- B22C1/186—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of inorganic agents contaming ammonium or metal silicates, silica sols
- B22C1/188—Alkali metal silicates
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
The invention relates to environment-friendly sodium silicate-bonded sand for instrument casting. The environment-friendly sodium silicate-bonded sand comprises the following raw materials by weight part: 100 parts of silica sand base stocks, 1-6 parts of sodium silicate, 0.2-1 part of sodium borate, 5-10 parts of gypsum powder, 2-5 parts of kaolin, 1-5 parts of sepiolite, 1-2 parts of sodium formate, 3-6 parts of lignin sulfonate fibers and 1-2 parts of chitosan. The environment-friendly sodium silicate-bonded sand for instrument casting provided by the invention has the advantages of high strength, small dimensional deviation, excellent collapsibility and less energy consumption, has obvious economic benefit and social benefit and is known as an environment-friendly molding material. The sodium silicate-bonded sand provided by the invention can be used for casting various sand instrument castings and the surface quality and size accuracy of the castings are higher.
Description
Technical field
The present invention relates to a kind of moulding sand for casting technical field, be specifically related to a kind of instrument casting feature of environmental protection water-glass sand.
Background technology
Water-glass sand is the one of molding sand, and molding sand effect in Foundry Production is particularly important, and the casting wasted product caused because of the poor quality of molding sand accounts for the 30～50% of the total rejection number of foundry goods.Foundry Production generally requirement to molding sand is: have higher intensity and heat stability, to bear the effect of various external force and high temperature；The ability that good mobility, i.e. molding sand are mutually shifted between sand grains under external force or action of gravity own；Certain plasticity, i.e. molding sand deform under external force, can keep the ability of the shape given after external force is removed；Preferably breathability, i.e. molding sand hole are through the ability of gas；High knockability, also known as collapsibility, i.e. after casting solidification, whether molding sand is easily destroyed, if the performance easily removed from foundry goods.
Casting sand used is required higher by instrument and equipment, various different casting flaw is often there is in existing molding sand casting apparatus in foundry production, such as crackle, pore, sand holes, shrinkage cavity etc., have impact on the serviceability of molding sand casting apparatus, and the caking property between the generation of these defects and foundry goods and casting sand, detachment is relevant, existing casting sand serviceability is poor, easily produce bonding with foundry goods, foundry goods is caused to be not easily stripped, and cast breathability, plasticity and mobility are bad, thus cause cast(ing) surface coarse, make Mechanical processing of casting percent defective higher；The molding sand feature of environmental protection of casting is poor, relatively costly, limits the development of casting sand to a certain extent.
Summary of the invention
Not enough for prior art, the invention provides the instrument sodium silicate sand used for casting that a kind of high-performance, the feature of environmental protection are good.
The present invention solves the technical scheme of above-mentioned technical problem employing: a kind of instrument casting feature of environmental protection water-glass sand, including the raw material of following parts by weight: silica sand base material 100 parts, waterglass 1 ~ 6 part, Borax 0.2 ~ 1 part, Gypsum Fibrosum powder 5 ~ 10 parts, Kaolin 2 ~ 5 parts, meerschaum 1 ~ 5 part, sodium formate 1 ~ 2 part, lignosulfonate fiber 3 ~ 6 parts, chitosan 1 ~ 2 part.
Further, described a kind of instrument casting feature of environmental protection water-glass sand, including the raw material of following parts by weight: silica sand base material 100 parts, waterglass 4 parts, Borax 0.6 part, Gypsum Fibrosum powder 7 parts, Kaolin 4 parts, meerschaum 3 parts, sodium formate 1.5 parts, lignosulfonate fiber 5 parts, chitosan 1.5 parts.
Further, described a kind of instrument casting feature of environmental protection water-glass sand, including the raw material of following parts by weight: silica sand base material 100 parts, waterglass 1 part, Borax 0.2 part, Gypsum Fibrosum powder 5 parts, Kaolin 2 parts, meerschaum 1 part, sodium formate 1 part, lignosulfonate fiber 3 parts, chitosan 1 part.
Further, described a kind of instrument casting feature of environmental protection water-glass sand, including the raw material of following parts by weight: silica sand base material 100 parts, waterglass 6 parts, Borax 1 part, Gypsum Fibrosum powder 10 parts, Kaolin 5 parts, meerschaum 5 parts, sodium formate 2 parts, lignosulfonate fiber 6 parts, chitosan 2 parts.
Further, described silica sand base material SiO2Content is more than or equal to 99%, Fe2O3Content is less than or equal to 0.02%.
Compared with prior art, what the present invention possessed has the beneficial effect that
A kind of instrument casting feature of environmental protection water-glass sand sand mold intensity that the present invention prepares is high, dimensional discrepancy is little, collapsibility good, energy resource consumption is few, has significant economic benefit, social benefit, is a kind of generally acknowledged environmentally friendly Modeling Material；The water-glass sand of the present invention can be used for the production casting of various molding sand instrument foundry goods, and the surface quality of foundry goods and dimensional accuracy are high.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described further.
Embodiment 1: a kind of instrument casting uses feature of environmental protection water-glass sand, including the raw material of following parts by weight: silica sand base material 100 parts, waterglass 4 parts, Borax 0.6 part, Gypsum Fibrosum powder 7 parts, Kaolin 4 parts, meerschaum 3 parts, sodium formate 1.5 parts, lignosulfonate fiber 5 parts, chitosan 1.5 parts.
Embodiment 2: a kind of instrument casting uses feature of environmental protection water-glass sand, including the raw material of following parts by weight: silica sand base material 100 parts, waterglass 1 part, Borax 0.2 part, Gypsum Fibrosum powder 5 parts, Kaolin 2 parts, meerschaum 1 part, sodium formate 1 part, lignosulfonate fiber 3 parts, chitosan 1 part.
Embodiment 3: a kind of instrument casting uses feature of environmental protection water-glass sand, including the raw material of following parts by weight: silica sand base material 100 parts, waterglass 6 parts, Borax 1 part, Gypsum Fibrosum powder 10 parts, Kaolin 5 parts, meerschaum 5 parts, sodium formate 2 parts, lignosulfonate fiber 6 parts, chitosan 2 parts.
Silica sand base material SiO described in above-described embodiment 1-32Content is more than or equal to 99%, Fe2O3Content is less than or equal to 0.02%.
Concrete, in use, it is on the waiting list raw material by described parts by weight, is blended in described silica sand base material, waterglass, Borax, Gypsum Fibrosum powder, Kaolin, meerschaum, sodium formate, lignosulfonate fiber and chitosan are added continuous muller, obtains the water-glass sand of the present invention.
The above is only the preferred embodiment of the present invention; it should be pointed out that, for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvement and modification, these improve and modify and also should be regarded as protection scope of the present invention.
Claims (5)
1. feature of environmental protection water-glass sand is used in an instrument casting, it is characterized in that, including the raw material of following parts by weight: silica sand base material 100 parts, waterglass 1 ~ 6 part, Borax 0.2 ~ 1 part, Gypsum Fibrosum powder 5 ~ 10 parts, Kaolin 2 ~ 5 parts, meerschaum 1 ~ 5 part, sodium formate 1 ~ 2 part, lignosulfonate fiber 3 ~ 6 parts, chitosan 1 ~ 2 part.
A kind of instrument casting feature of environmental protection water-glass sand the most according to claim 1, it is characterized in that, including the raw material of following parts by weight: silica sand base material 100 parts, waterglass 4 parts, Borax 0.6 part, Gypsum Fibrosum powder 7 parts, Kaolin 4 parts, meerschaum 3 parts, sodium formate 1.5 parts, lignosulfonate fiber 5 parts, chitosan 1.5 parts.
A kind of instrument casting feature of environmental protection water-glass sand the most according to claim 1, it is characterized in that, including the raw material of following parts by weight: silica sand base material 100 parts, waterglass 6 parts, Borax 1 part, Gypsum Fibrosum powder 10 parts, Kaolin 5 parts, meerschaum 5 parts, sodium formate 2 parts, lignosulfonate fiber 6 parts, chitosan 2 parts.
A kind of instrument casting feature of environmental protection water-glass sand the most according to claim 1, it is characterized in that, including the raw material of following parts by weight: silica sand base material 100 parts, waterglass 6 parts, Borax 1 part, Gypsum Fibrosum powder 10 parts, Kaolin 5 parts, meerschaum 5 parts, sodium formate 2 parts, lignosulfonate fiber 6 parts, chitosan 2 parts.
5. according to a kind of instrument casting feature of environmental protection water-glass sand described in any one of claim 1-4, it is characterised in that: described silica sand base material SiO2Content is more than or equal to 99%, Fe2O3Content is less than or equal to 0.02%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610609969.8A CN106001389A (en) | 2016-07-29 | 2016-07-29 | Environment-friendly sodium silicate-bonded sand for instrument casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610609969.8A CN106001389A (en) | 2016-07-29 | 2016-07-29 | Environment-friendly sodium silicate-bonded sand for instrument casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106001389A true CN106001389A (en) | 2016-10-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610609969.8A Pending CN106001389A (en) | 2016-07-29 | 2016-07-29 | Environment-friendly sodium silicate-bonded sand for instrument casting |
Country Status (1)
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| CN (1) | CN106001389A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107186170A (en) * | 2017-05-17 | 2017-09-22 | 安徽巨泰机械制造有限公司 | A kind of agricultural machinery metal casting sand casting process |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102814460A (en) * | 2012-08-20 | 2012-12-12 | 合肥江淮铸造有限责任公司 | Casting molding sand and preparation method thereof |
| CN103495692A (en) * | 2013-10-16 | 2014-01-08 | 合肥市田源精铸有限公司 | Mud core moulding sand for casting and preparation method thereof |
| CN103567356A (en) * | 2013-10-11 | 2014-02-12 | 铜陵市经纬流体科技有限公司 | Sodium silicate sand with high wet-compressive strength and preparation method thereof |
-
2016
- 2016-07-29 CN CN201610609969.8A patent/CN106001389A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102814460A (en) * | 2012-08-20 | 2012-12-12 | 合肥江淮铸造有限责任公司 | Casting molding sand and preparation method thereof |
| CN103567356A (en) * | 2013-10-11 | 2014-02-12 | 铜陵市经纬流体科技有限公司 | Sodium silicate sand with high wet-compressive strength and preparation method thereof |
| CN103495692A (en) * | 2013-10-16 | 2014-01-08 | 合肥市田源精铸有限公司 | Mud core moulding sand for casting and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107186170A (en) * | 2017-05-17 | 2017-09-22 | 安徽巨泰机械制造有限公司 | A kind of agricultural machinery metal casting sand casting process |
| CN107186170B (en) * | 2017-05-17 | 2019-01-25 | 安徽巨泰机械制造有限公司 | A kind of agricultural machinery metal casting sand casting process |
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Application publication date: 20161012 |