CN1899722A - Novel artificial casting sand and its preparing method - Google Patents
Novel artificial casting sand and its preparing method Download PDFInfo
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- CN1899722A CN1899722A CN 200510017799 CN200510017799A CN1899722A CN 1899722 A CN1899722 A CN 1899722A CN 200510017799 CN200510017799 CN 200510017799 CN 200510017799 A CN200510017799 A CN 200510017799A CN 1899722 A CN1899722 A CN 1899722A
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- casting sand
- sand
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- casting
- artificial casting
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Abstract
The present invention is technological process of producing artificial casting sand and its application. The artificial casting sand is produced with bauxite ore containing Al2O3 in 45-90 % as material in an arc furnace. Bauxite ore material is first smelted in an arc furnace, and the outflow liquid is applied with air pressure of 3.0-8.0 kg/sq cm to be crushed, so that spherical casting sand with smooth surface is obtained. The artificial casting sand may be used for molding together with furan resin, phenolic resin, water glass, etc. The present invention has the features of environment friendship, high heat resistance, high strength, low heat expansion, low production cost, etc.
Description
[technical field]
The invention belongs to the molding sand and the application thereof of casting, particularly a kind of novel artificial casting sand and preparation method thereof.
[technical background]
A large amount of at present artificial casting sands that use mainly originate from the natural silica sand or the silica sand of hand breaking, and there is following shortcoming in it in the moulding casting cycle: 1, refractory temperature is not ideal enough.2, expand after silica sand is heated, broken easily, contaminated environment, wherein SIO
2Dust easily produces anthraco-silicosis, serious harm direct labor's health.3, the coefficient of thermal expansion height of silica sand has repeatedly phase transformation, is easy to produce casting flaw.4, particularly hand breaking sand grains type is bad for silica sand.5, recovery utilization rate is low, and regenerability is bad.
[goal of the invention]
The objective of the invention is to solve the deficiency in the above technology, provide a kind of environmental protection, high temperature resistant, high strength, coefficient of thermal expansion low, novel artificial casting sand that the reuse performance is good and preparation method thereof.
[summary of the invention]
A kind of novel artificial casting sand of the present invention is to be that raw material makes with the bauxite ore: (the stove size is 652～850mm square) adds and contains AL in electric arc furnaces
2O
345～90% bauxite ore raw materials utilize arc discharge to produce high temperature.The bauxite raw material is fused into liquid, when liquid flows out stove, its air that imposes 70～85m/s is pressed (pressure 3.0～8.0kg/cm
2), utilize high wind with the broken cooling of liquid charging stock after, obtain being shaped as sphere or subglobular, ganoid sand grains promptly gets a kind of novel artificial casting sand after advancing the shape screening.
Its technological process is:
A kind of novel artificial casting sand of the present invention has following advantage:
1. refractory temperature height, its refractory temperature satisfies the refractory temperature requirement of moulding sand fully greater than 1790 ℃.
2. coefficient of thermal expansion is low, compares with other sand mold, and its coefficient of thermal expansion has only 1/2 of flatiron sand, and 1/4 of regeneration silica sand in casting cycle, can effectively suppress because the casting flaw that thermal expansion produces.
3. sand grain type is good, and is spherical in shape, and its dihedral factor reaches 1.06, improves the pack completeness of casting mold greatly, improves the gas permeability of casting mold.
4. the binding agent addition is low, and the gas hole defect of foundry goods is had good inhibitory effect, can improve the sand collapsibility, and its tensile strength is a times of general sand, and gas forming amount has reduced nearly 50%.
5. high strength, LB, reuse performance are good.
[implementation method]
The specific embodiment of a kind of novel artificial casting sand of the present invention is:
Embodiment 1:
A kind of novel artificial casting sand of the present invention is to have adopted AL
2O
345-90% silicon alumina is a raw material.
Embodiment 2:
A kind of preparation method of novel artificial casting sand is:
1. will contain AL
2O
345-90% bauxite ore adds electric arc furnaces (the stove size is the 650-850mm square), utilizes arc discharge to produce high temperature, and its calcining is fused into liquid.
2. when liquid flows out stove, its air that imposes 70-85m/s is pressed (pressure 3.0-8.0kg/cm
2), utilize high wind with the broken cooling of liquid charging stock after, obtain being shaped as spherical sand grains.
3. spherical sand grains is sieved, both made a kind of novel artificial casting sand.
Embodiment 3:
A kind of novel artificial casting sand of the present invention can be used for furane resins, phenolic resins, phenolic aldehyde urethane resin, waterglass, formative methods such as bentonite.
Embodiment 4:
A kind of novel artificial casting sand of the present invention can be applicable to lost foam casting, model casting, Special Processes of Metal Castings such as V method casting.
Claims (5)
1, a kind of novel artificial casting sand has adopted AL
2O
345-90% silicon alumina is that raw material is made.
2, a kind of preparation method of novel artificial casting sand, finish through following steps:
A. will contain AL
2O
345-90% bauxite ore adds electric arc furnaces (the stove size is the 650-850mm square), utilizes arc discharge to produce high temperature, and it is fused into liquid.
B. when liquid flows out stove, its air that imposes 70-85m/s is pressed (pressure 3.0-8.0kg/cm
2), utilize high wind with the broken cooling of liquid charging stock after, obtain being shaped as spherical sand grains.
C. spherical sand grains is sieved, both made a kind of novel artificial casting sand.
3. according to claim 1,2, described a kind of novel artificial casting sand is characterized in that: its refractory temperature is greater than 1790 ℃.
4. according to claim 1,2, described a kind of novel artificial casting sand is characterized in that: can be used for furane resins, phenolic resins, phenolic aldehyde urethane resin, waterglass, formative methods such as bentonite.
5. according to claim 1,2, described a kind of novel artificial casting sand is characterized in that: can be applicable to lost foam casting, model casting, Special Processes of Metal Castings such as V method casting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510017799 CN1899722A (en) | 2005-07-18 | 2005-07-18 | Novel artificial casting sand and its preparing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510017799 CN1899722A (en) | 2005-07-18 | 2005-07-18 | Novel artificial casting sand and its preparing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1899722A true CN1899722A (en) | 2007-01-24 |
Family
ID=37655817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510017799 Pending CN1899722A (en) | 2005-07-18 | 2005-07-18 | Novel artificial casting sand and its preparing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1899722A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102000777A (en) * | 2010-12-21 | 2011-04-06 | 潍柴动力股份有限公司 | Core sand mixing process, heated core box core-making process and sand core prepared therefrom |
| CN102503481A (en) * | 2011-11-03 | 2012-06-20 | 铜陵和武机械制造有限责任公司 | Environment-friendly molding sand and preparation method thereof |
| CN103212665A (en) * | 2013-05-09 | 2013-07-24 | 窦志超 | Artificial nice foundry sand, preparation method and application thereof |
| CN104016604A (en) * | 2014-06-20 | 2014-09-03 | 张耀辰 | Special high-strength artificial sand for cement gel |
| CN104557062A (en) * | 2013-10-16 | 2015-04-29 | 太原科技大学 | Spinel casting sand and preparation method thereof |
| CN111014567A (en) * | 2019-12-05 | 2020-04-17 | 十堰长江造型材料有限公司 | Novel preparation method of artificial casting sand |
-
2005
- 2005-07-18 CN CN 200510017799 patent/CN1899722A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102000777A (en) * | 2010-12-21 | 2011-04-06 | 潍柴动力股份有限公司 | Core sand mixing process, heated core box core-making process and sand core prepared therefrom |
| CN102503481A (en) * | 2011-11-03 | 2012-06-20 | 铜陵和武机械制造有限责任公司 | Environment-friendly molding sand and preparation method thereof |
| CN102503481B (en) * | 2011-11-03 | 2013-08-14 | 铜陵和武机械制造有限责任公司 | Environment-friendly molding sand and preparation method thereof |
| CN103212665A (en) * | 2013-05-09 | 2013-07-24 | 窦志超 | Artificial nice foundry sand, preparation method and application thereof |
| CN104557062A (en) * | 2013-10-16 | 2015-04-29 | 太原科技大学 | Spinel casting sand and preparation method thereof |
| CN104016604A (en) * | 2014-06-20 | 2014-09-03 | 张耀辰 | Special high-strength artificial sand for cement gel |
| CN111014567A (en) * | 2019-12-05 | 2020-04-17 | 十堰长江造型材料有限公司 | Novel preparation method of artificial casting sand |
| CN111014567B (en) * | 2019-12-05 | 2021-07-23 | 十堰长江造型材料有限公司 | Novel preparation method of artificial casting sand |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |