CN107840653A - A kind of preparation method of aluminum-spinel remelting ball shape casting sand - Google Patents
A kind of preparation method of aluminum-spinel remelting ball shape casting sand Download PDFInfo
- Publication number
- CN107840653A CN107840653A CN201711230306.6A CN201711230306A CN107840653A CN 107840653 A CN107840653 A CN 107840653A CN 201711230306 A CN201711230306 A CN 201711230306A CN 107840653 A CN107840653 A CN 107840653A
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- CN
- China
- Prior art keywords
- spinel
- ball shape
- casting sand
- spheric granules
- shape casting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/44—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminates
- C04B35/443—Magnesium aluminate spinel
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/94—Products characterised by their shape
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
The present invention relates to a kind of preparation method of aluminum-spinel remelting ball shape casting sand, comprise the following steps：It is 7 in mass ratio by commercial alumina powder and industrial magnesium oxide powder:3 ratio mixing；The batch mixing of mixing is placed in electric arc furnaces and is heated to molten condition；The batch mixing liquid of molten condition is blown to the particle of globulate through pressure-air；The spheric granules of formation is gradually cooling to room temperature, makes the structure height spinel of its spheric granules；By the spheric granules after cooling by screening, spheric granules of the diameter in 38 3000 micrometer ranges is taken, the ball shape casting sand of height spinel is made.Ball shape casting sand prepared by the present invention is spinel, has the advantages that environmental protection, high temperature resistant, high intensity, low thermal expansion, reuse performance are good, in addition, the raw material for preparing ball shape casting sand are cheap, manufacturing process is simple.
Description
Technical field
The present invention relates to a kind of preparation method of casting model powder, and in particular to a kind of aluminum-spinel remelting ball shape casting sand
Preparation method.
Background technology
The problem of influence casting qualities such as refractoriness is low, thermal expansion amount is big in the application be present in conventional cast molding sand.It is non-
Quartziferous roughing sand, there is the advantages such as refractoriness is high, the coefficient of expansion is low, but its resource scarcity, price are high, add casting into
This, easily the metal liquid with some special compositions chemically reacts, and causes casting defect, using with limitation.Casting is used
Artificial Spherical Sand has the advantages that refractoriness is high, thermal expansion amount is small, reuse is good, in thick strip, steel-casting, making core and covers
Good application is obtained in film sand, dosage increases year by year.
Chinese people makes Spherical Sand and problems with use be present at present：1st, Spherical Sand kind and system are single, ball
Seriation and commercialized degree are relatively low in actual applications for shape sand.2nd, Spherical Sand focuses primarily upon aluminium silicon systems Spherical Sand, refractoriness
Still it is not ideal enough.3rd, chemical composition is mixed and disorderly, and high temperature anti-slag is relatively low.4th, permeability without caking power at high temperature be present and glue
Sand problem.5th, mechanical behavior under high temperature is relatively low.6th, intensity is relatively low, broken.
The content of the invention
In consideration of it, it is an object of the present invention to provide a kind of preparation method of aluminum-spinel remelting ball shape casting sand, purport
Under the conditions of solving existing artificial Spherical Sand and refractoriness low and high temperature being present permeability scab, reuse performance is low and intensity is relatively low
Breakable defect.
In order to reach foregoing invention purpose, and then the technical scheme taken is as follows：
A kind of preparation method of aluminum-spinel remelting ball shape casting sand, comprises the following steps：
S1：It is 7 in mass ratio by commercial alumina powder and industrial magnesium oxide powder:3 ratio mixing；
S2：The batch mixing of mixing is placed in electric arc furnaces to the liquid for being heated to molten condition；
S3：The batch mixing liquid of molten condition is blown into miniature droplets through pressure-air, using drop in its own face
The particle of approximate full spherical is formed in the presence of power；
S4：By the spheric granules of formation to be gradually cooling to room temperature under conditions of 1-150 DEG C of decline per minute, make its spherical
The structure height spinel of particle；
S5：By the spheric granules after cooling by screening, spheric granules of the diameter in 38-3000 micrometer ranges is taken, is made
Obtain the ball shape casting sand of height spinel.
Beneficial effects of the present invention：Ball shape casting sand prepared by the present invention is spinel, belongs to new varieties and new system,
Have the advantages that environmental protection, high temperature resistant, high intensity, low thermal expansion, reuse performance are good, because refractoriness is higher than 1800 DEG C, completely
Meet the refractoriness requirement of molding sand；The refractoriness under load T5 of sample is higher than 1500 DEG C simultaneously, and dihedral coefficient is less than 1.1, significantly
Degree improves molding sand filling rate and casting mold air penetrability；In addition, the raw material for preparing ball shape casting sand are cheap, manufacturing process is simple.
Embodiment
In order that those skilled in the art more fully understand application scheme, below in conjunction with the implementation in the application
Example, the technical scheme of the application is clearly and completely described, it is clear that described embodiment is only the application one
The embodiment divided, rather than whole embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not doing
Go out under the premise of creative work the every other embodiment obtained, should all belong to the scope of the application protection.
A kind of preparation method of aluminum-spinel remelting ball shape casting sand, comprises the following steps：
S1：It is 7 in mass ratio by commercial alumina powder and industrial magnesium oxide powder:3 ratio mixing；Wherein, it is industrial
The main component of alumina powder is AI3O2, the main component of industrial magnesium oxide powder is MgO；
S2：The batch mixing of mixing is placed in electric arc furnaces to the liquid for being heated to molten condition；Because the fusing point of batch mixing is 2000
DEG C, therefore, heating-up temperature to reach molten condition more than 2000 DEG C；
S3：The batch mixing liquid of molten condition is blown into miniature droplets through pressure-air, using drop in its own face
The particle of approximate full spherical is formed in the presence of power；
S4：The spheric granules of formation is gradually cooling to room temperature under conditions of 1-150 DEG C of decline per minute, makes its spherical
The structure height spinel of particle；It can be cooled down in this example using multiple means such as water cooling, air cooling, oil coolings, so that it reaches
To the result per minute for declining 1-150 DEG C；
S5：By the spheric granules after cooling by screening, spheric granules of the diameter in 38-3000 micrometer ranges is taken, is made
Obtain the ball shape casting sand of height spinel.
Beneficial effects of the present invention：Ball shape casting sand prepared by the present invention is spinel, belongs to new varieties and new system,
Have the advantages that environmental protection, high temperature resistant, high intensity, low thermal expansion, reuse performance are good, because refractoriness is higher than 1800 DEG C, completely
Meet the refractoriness requirement of molding sand；The refractoriness under load T5 of sample is higher than 1500 DEG C simultaneously, and dihedral coefficient is less than 1.1, significantly
Degree improves molding sand filling rate and casting mold air penetrability；In addition, the raw material for preparing ball shape casting sand are cheap, manufacturing process is simple.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (1)
1. a kind of preparation method of aluminum-spinel remelting ball shape casting sand, it is characterised in that comprise the following steps：
S1：It is 7 in mass ratio by commercial alumina powder and industrial magnesium oxide powder:3 ratio mixing；
S2：The batch mixing of mixing is placed in electric arc furnaces to the liquid for being heated to molten condition；
S3：The batch mixing liquid of molten condition is blown into miniature droplets through pressure-air, using drop in its own face tension force
The particle of approximate full spherical is formed under effect；
S4：By the spheric granules of formation to be gradually cooling to room temperature under conditions of 1-150 DEG C of decline per minute, make its spheric granules
Structure height spinel；
S5：By the spheric granules after cooling by screening, spheric granules of the diameter in 38-3000 micrometer ranges is taken, height is made
Spend the ball shape casting sand of spinel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711230306.6A CN107840653A (en) | 2017-11-29 | 2017-11-29 | A kind of preparation method of aluminum-spinel remelting ball shape casting sand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711230306.6A CN107840653A (en) | 2017-11-29 | 2017-11-29 | A kind of preparation method of aluminum-spinel remelting ball shape casting sand |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107840653A true CN107840653A (en) | 2018-03-27 |
Family
ID=61680533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711230306.6A Pending CN107840653A (en) | 2017-11-29 | 2017-11-29 | A kind of preparation method of aluminum-spinel remelting ball shape casting sand |
Country Status (1)
| Country | Link |
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| CN (1) | CN107840653A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108911765A (en) * | 2018-07-05 | 2018-11-30 | 山东金璞新材料有限公司 | A method of using flint clay as the artificial synthesized manufacture mullite casting model powder of major ingredient |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101045624A (en) * | 2007-04-02 | 2007-10-03 | 营口高科合成耐火材料有限公司 | Magnesium iron spinel sand and manufacturing method thereof |
| CN102180689A (en) * | 2011-03-11 | 2011-09-14 | 傅晓云 | Magnalium hollow ball and preparation method thereof |
| KR101275148B1 (en) * | 2011-10-31 | 2013-06-17 | 주식회사 에코마이스터 | Quenched eco-friendly nickel slag ball using high speed gas, manufacturing method and apparatus |
-
2017
- 2017-11-29 CN CN201711230306.6A patent/CN107840653A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101045624A (en) * | 2007-04-02 | 2007-10-03 | 营口高科合成耐火材料有限公司 | Magnesium iron spinel sand and manufacturing method thereof |
| CN102180689A (en) * | 2011-03-11 | 2011-09-14 | 傅晓云 | Magnalium hollow ball and preparation method thereof |
| KR101275148B1 (en) * | 2011-10-31 | 2013-06-17 | 주식회사 에코마이스터 | Quenched eco-friendly nickel slag ball using high speed gas, manufacturing method and apparatus |
Non-Patent Citations (1)
| Title |
|---|
| 李红霞等: "《耐火材料手册》", 31 January 2007, 冶金工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108911765A (en) * | 2018-07-05 | 2018-11-30 | 山东金璞新材料有限公司 | A method of using flint clay as the artificial synthesized manufacture mullite casting model powder of major ingredient |
| CN108911765B (en) * | 2018-07-05 | 2021-02-26 | 山东金璞新材料有限公司 | Method for artificially synthesizing and manufacturing mullite casting sand by taking flint clay as main material |
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Application publication date: 20180327 |
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