CN116117071A - Molding sand capable of preventing air holes from being formed and preparation method thereof - Google Patents
Molding sand capable of preventing air holes from being formed and preparation method thereof Download PDFInfo
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- CN116117071A CN116117071A CN202211682938.7A CN202211682938A CN116117071A CN 116117071 A CN116117071 A CN 116117071A CN 202211682938 A CN202211682938 A CN 202211682938A CN 116117071 A CN116117071 A CN 116117071A
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- 239000003110 molding sand Substances 0.000 title claims abstract description 48
- 238000002360 preparation method Methods 0.000 title abstract description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 214
- 239000004576 sand Substances 0.000 claims abstract description 127
- 239000004927 clay Substances 0.000 claims abstract description 57
- 239000000203 mixture Substances 0.000 claims abstract description 54
- 239000000843 powder Substances 0.000 claims abstract description 35
- 239000006004 Quartz sand Substances 0.000 claims abstract description 31
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 29
- 229920002472 Starch Polymers 0.000 claims abstract description 27
- 235000019698 starch Nutrition 0.000 claims abstract description 27
- 239000008107 starch Substances 0.000 claims abstract description 27
- 229910001570 bauxite Inorganic materials 0.000 claims abstract description 26
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 21
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000000853 adhesive Substances 0.000 claims abstract description 17
- 230000001070 adhesive effect Effects 0.000 claims abstract description 17
- 239000011148 porous material Substances 0.000 claims abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 8
- 239000000440 bentonite Substances 0.000 claims description 26
- 229910000278 bentonite Inorganic materials 0.000 claims description 26
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 26
- 238000002156 mixing Methods 0.000 claims description 26
- 239000002023 wood Substances 0.000 claims description 22
- 239000003245 coal Substances 0.000 claims description 20
- 230000015572 biosynthetic process Effects 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 10
- 229920005989 resin Polymers 0.000 claims description 9
- 239000011347 resin Substances 0.000 claims description 9
- 238000007873 sieving Methods 0.000 claims description 9
- 239000007849 furan resin Substances 0.000 claims description 7
- 239000005011 phenolic resin Substances 0.000 claims description 7
- 229920003987 resole Polymers 0.000 claims description 7
- 229920002803 thermoplastic polyurethane Polymers 0.000 claims description 7
- 238000000498 ball milling Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 239000011230 binding agent Substances 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000007580 dry-mixing Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 239000008187 granular material Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 238000010298 pulverizing process Methods 0.000 claims description 3
- 238000005245 sintering Methods 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims 1
- 239000011800 void material Substances 0.000 claims 1
- 238000005266 casting Methods 0.000 abstract description 6
- 230000007547 defect Effects 0.000 abstract description 6
- 239000002817 coal dust Substances 0.000 abstract description 4
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 230000003746 surface roughness Effects 0.000 abstract description 2
- 210000003462 vein Anatomy 0.000 abstract description 2
- 230000000181 anti-adherent effect Effects 0.000 abstract 1
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 4
- 229920001568 phenolic resin Polymers 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000004115 Sodium Silicate Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- 229910052911 sodium silicate Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000007937 lozenge Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
Classifications
-
- 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
- B22C1/02—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by additives for special purposes, e.g. indicators, breakdown additives
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
The invention discloses molding sand for preventing air holes from forming and a preparation method thereof, and relates to the technical field of molding sand, wherein the molding sand comprises the following raw materials in parts by weight: 70-80 parts of mixed silica sand, 10-20 parts of mixed clay, 3-5 parts of ferric oxide powder, 5-10 parts of anti-adhesive sand mixture, 3-5 parts of adhesive and a proper amount of water, the sand-sticking defect can be prevented and the surface roughness is reduced by coal dust, alpha starch and loiron ore sand, thereby improving the labor environment, generating pores after the alpha starch is heated and combusted, slowing down the thermal expansion of quartz sand, improving the sand inclusion resistance of molding sand, preventing sand inclusion of castings, adopting ferric oxide powder to improve the thermal conductivity of the molding sand, reducing the pores of the molding sand, improving the high-temperature plasticity of the molding sand, preventing the defects of sand inclusion, sand sticking, vein and the like of the castings, and simultaneously, the wood-saving clay and bauxite are favorable for molding sand, and have high heat resistance and thermal stability, so that the molding sand has higher strength and thermal stability and can bear various external forces and high temperatures.
Description
Technical Field
The invention relates to the technical field of molding sand, in particular to molding sand capable of preventing air holes from being formed and a preparation method thereof.
Background
Molding sand is generally formed by mixing molding materials such as raw sand for casting, a molding sand binder, auxiliary substances and the like according to a certain proportion. The molding sand can be classified into clay sand, sodium silicate sand, cement sand, resin sand, etc. according to the binder used. The most used clay sand, sodium silicate sand and resin sand are used;
the clay sand is formed by mixing natural silica sand, clay, auxiliary substances and water, however, because the clay sand has higher water content and lower strength and air permeability, the defects of air holes, sand inclusion, sand sticking, sand expansion and the like are easy to generate during casting, and therefore, we propose molding sand for preventing the formation of air holes and a preparation method thereof.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides molding sand for preventing air holes from forming and a preparation method thereof, and solves the problems in the prior art.
In order to achieve the above purpose, the invention is realized by the following technical scheme:
in a first aspect, the invention provides molding sand for preventing air holes from forming and a preparation method thereof, wherein the molding sand comprises the following raw materials in parts by weight: 70-80 parts of mixed silica sand, 10-20 parts of mixed clay, 3-5 parts of ferric oxide powder, 5-10 parts of anti-sticking sand mixture, 3-5 parts of adhesive and a proper amount of water.
Preferably, the mixed silica sand is a mixture of quartz sand and reclaimed sand, and the mixing ratio of the quartz sand to the reclaimed sand is 5:1.
Preferably, the preparation method of the mixed silica sand comprises the following steps:
(1) respectively carrying out impurity removal and pollution removal treatment on quartz sand and reclaimed sand, cleaning, drying and ball milling the cleaned quartz sand and reclaimed sand, and sieving the cleaned quartz sand and reclaimed sand with a 200-mesh standard sieve after ball milling to obtain 200-mesh quartz sand and reclaimed sand for later use;
(2) and (3) proportionally selecting quartz sand and reclaimed sand which are sieved by a mesh sieve, adding the quartz sand and the reclaimed sand into a mixer, and stirring at a speed of 400-600rpm for 15-20 minutes to mix, thereby obtaining the mixed silica sand.
Preferably, the mixed clay is a mixture of bentonite, wood clay and bauxite, and the mixing ratio of bentonite, wood clay and bauxite is 4:3:3.
Preferably, the preparation method of the mixed clay comprises the following steps:
(1) respectively crushing bentonite, wood clay and bauxite, and sieving with a 100-mesh standard sieve to obtain 100-mesh bentonite, wood clay and bauxite for later use;
(2) selecting bentonite, wood clay and bauxite which are sieved according to a proportion, adding the bentonite, the wood clay and the bauxite into a mixer to be uniformly stirred, adding a proper amount of water into the mixer to granulate, then sending the mixture into a calciner to be presintered for 20 minutes at 300-400 ℃, then sintering the mixture at 500-700 ℃, and taking out the mixture to obtain the granular mixed clay.
Preferably, the anti-sticking sand mixture is a mixture of coal dust, alpha starch and loiron ore, and the mixing ratio of the coal dust, the alpha starch and the loiron ore is 2:2:1.
Preferably, the preparation method of the anti-sand mixture comprises the following steps:
(1) respectively crushing coal powder, alpha starch and loiron ore sand, and passing through a 100-mesh standard sieve to obtain 100-mesh coal powder, alpha starch and loiron ore sand for later use;
(2) the pulverized coal, alpha starch and loiron ore which are sieved by the sieve are selected according to the proportion, are added into a mixer to be stirred for 3-6 minutes for dry mixing, and then are added with a proper amount of water into the mixer to be wet mixed for 5-10 minutes, so that the anti-sticking sand mixture can be obtained.
Preferably, the binder is one or a mixture of more than two of furan resin, resol resin, alkaline phenol resin and urethane resin.
According to a second aspect of the present invention, there is provided a method for preparing a molding sand having pores formed therein, comprising the steps of:
s1, firstly, putting ferric oxide powder into a universal pulverizer for pulverization, and sieving the pulverized ferric oxide powder with a 100-mesh sieve;
s2, weighing mixed silica sand, mixed clay, ferric oxide powder, anti-sticking sand mixture and adhesive according to the formula amount, adding the mixed silica sand, the mixed clay and the adhesive according to the formula amount, mixing for 15 minutes in a mixer, adding the ferric oxide powder and the anti-sticking sand mixture according to the formula amount after uniformly mixing, heating to 70-80 ℃, and stirring for 20-25 minutes to obtain a mixed material;
s3, adding 3-5% of water in parts by weight into a mixer to mix with the mixed materials, thereby obtaining the molding sand.
The invention provides molding sand capable of preventing air holes from forming and a preparation method thereof. Compared with the prior art, the method has the following beneficial effects:
the sand for preventing pore formation is prepared from powdered coal, alpha starch and loiron ore through burning alpha starch to form pores, and features high strength and heat stability.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides a technical scheme that: the molding sand comprises the following raw materials in parts by weight: 70-80 parts of mixed silica sand, 10-20 parts of mixed clay, 3-5 parts of ferric oxide powder, 5-10 parts of anti-sticking sand mixture, 3-5 parts of adhesive and a proper amount of water.
The mixed silica sand is a mixture of quartz sand and reclaimed sand, and the mixing ratio of the quartz sand to the reclaimed sand is 5:1. The mixed silica sand is mixed by quartz sand and reclaimed sand, so that the recycling resources are effectively utilized, the ferric oxide powder can improve the heat conductivity of the molding sand, reduce the pores of the molding sand, improve the high-temperature plasticity of the molding sand and prevent the defects of sand inclusion, sand sticking, vein and the like of castings.
The preparation method of the mixed silica sand comprises the following steps:
(1) respectively carrying out impurity removal and pollution removal treatment on quartz sand and reclaimed sand, cleaning, drying and ball milling the cleaned quartz sand and reclaimed sand, and sieving the cleaned quartz sand and reclaimed sand with a 200-mesh standard sieve after ball milling to obtain 200-mesh quartz sand and reclaimed sand for later use;
(2) and (3) proportionally selecting quartz sand and reclaimed sand which are sieved by a mesh sieve, adding the quartz sand and the reclaimed sand into a mixer, and stirring at a speed of 400-600rpm for 15-20 minutes to mix, thereby obtaining the mixed silica sand.
The mixed clay is a mixture of bentonite, wood clay and bauxite, and the mixing ratio of the bentonite, the wood clay and the bauxite is 4:3:3. The wood-saving clay is favorable for molding sand, and the bauxite has high temperature resistance and good thermal stability, so that the molding sand has high strength and thermal stability to bear various external forces and high temperature effects.
The preparation method of the mixed clay comprises the following steps:
(1) respectively crushing bentonite, wood clay and bauxite, and sieving with a 100-mesh standard sieve to obtain 100-mesh bentonite, wood clay and bauxite for later use;
(2) selecting bentonite, wood clay and bauxite which are sieved according to a proportion, adding the bentonite, the wood clay and the bauxite into a mixer to be uniformly stirred, adding a proper amount of water into the mixer to granulate, then sending the mixture into a calciner to be presintered for 20 minutes at 300-400 ℃, then sintering the mixture at 500-700 ℃, and taking out the mixture to obtain the granular mixed clay.
The anti-sticking sand mixture is a mixture of coal powder, alpha starch and loiron ore, and the mixing ratio of the coal powder, the alpha starch and the loiron ore is 2:2:1. The coal dust, the alpha starch and the lozenges can prevent sand bonding defects and reduce surface roughness, so that the labor environment is improved, pores are formed after the alpha starch is heated and burnt, the thermal expansion of quartz sand can be slowed down, the sand inclusion resistance of molding sand is improved, and sand inclusion of castings is prevented.
The preparation method of the anti-sticking sand mixture comprises the following steps:
(1) respectively crushing coal powder, alpha starch and loiron ore sand, and passing through a 100-mesh standard sieve to obtain 100-mesh coal powder, alpha starch and loiron ore sand for later use;
(2) the pulverized coal, alpha starch and loiron ore which are sieved by the sieve are selected according to the proportion, are added into a mixer to be stirred for 3-6 minutes for dry mixing, and then are added with a proper amount of water into the mixer to be wet mixed for 5-10 minutes, so that the anti-sticking sand mixture can be obtained.
The adhesive is one or more of furan resin, resol resin, alkaline phenolic resin and urethane resin. The furan resin, resol resin, alkaline phenol resin and urethane resin are used as binders to increase the strength of the sand mold, and have small dimensional deviation and good collapsibility.
According to the molding sand for preventing air holes from forming, a preparation method is provided, and the preparation method comprises the following steps:
s1, firstly, putting ferric oxide powder into a universal pulverizer for pulverization, and sieving the pulverized ferric oxide powder with a 100-mesh sieve;
s2, weighing mixed silica sand, mixed clay, ferric oxide powder, anti-sticking sand mixture and adhesive according to the formula amount, adding the mixed silica sand, the mixed clay and the adhesive according to the formula amount, mixing for 15 minutes in a mixer, adding the ferric oxide powder and the anti-sticking sand mixture according to the formula amount after uniformly mixing, heating to 70-80 ℃, and stirring for 20-25 minutes to obtain a mixed material;
s3, adding 3-5% of water in parts by weight into a mixer to mix with the mixed materials, thereby obtaining the molding sand.
The embodiment of the invention adopts molding sand for preventing air holes from forming, which comprises the following concrete steps:
example 1
The invention relates to molding sand for preventing air holes from being formed, which comprises the following raw materials in parts by weight: 70 parts of mixed silica sand, 20 parts of mixed clay, 5 parts of ferric oxide powder, 10 parts of anti-sticking sand mixture, 5 parts of adhesive and a proper amount of water;
the mixed silica sand is a mixture of quartz sand and reclaimed sand, and the mixing ratio of the quartz sand to the reclaimed sand is 5:1.
The mixed clay is a mixture of bentonite, wood clay and bauxite, and the mixing ratio of the bentonite, the wood clay and the bauxite is 4:3:3.
The anti-sticking sand mixture is a mixture of coal powder, alpha starch and loiron ore, and the mixing ratio of the coal powder, the alpha starch and the loiron ore is 2:2:1.
The adhesive is one or more of furan resin, resol resin, alkaline phenolic resin and urethane resin.
Example two
The invention relates to molding sand for preventing air holes from being formed, which comprises the following raw materials in parts by weight: 75 parts of mixed silica sand, 15 parts of mixed clay, 4 parts of ferric oxide powder, 8 parts of anti-sticking sand mixture, 4 parts of adhesive and a proper amount of water;
the mixed silica sand is a mixture of quartz sand and reclaimed sand, and the mixing ratio of the quartz sand to the reclaimed sand is 5:1.
The mixed clay is a mixture of bentonite, wood clay and bauxite, and the mixing ratio of the bentonite, the wood clay and the bauxite is 4:3:3.
The anti-sticking sand mixture is a mixture of coal powder, alpha starch and loiron ore, and the mixing ratio of the coal powder, the alpha starch and the loiron ore is 2:2:1.
The adhesive is one or more of furan resin, resol resin, alkaline phenolic resin and urethane resin.
Example III
The invention relates to molding sand for preventing air holes from being formed, which comprises the following raw materials in parts by weight: 80 parts of mixed silica sand, 10 parts of mixed clay, 3 parts of ferric oxide powder, 5 parts of anti-sticking sand mixture, 3 parts of adhesive and a proper amount of water;
the mixed silica sand is a mixture of quartz sand and reclaimed sand, and the mixing ratio of the quartz sand to the reclaimed sand is 5:1.
The mixed clay is a mixture of bentonite, wood clay and bauxite, and the mixing ratio of the bentonite, the wood clay and the bauxite is 4:3:3.
The anti-sticking sand mixture is a mixture of coal powder, alpha starch and loiron ore, and the mixing ratio of the coal powder, the alpha starch and the loiron ore is 2:2:1.
The adhesive is one or more of furan resin, resol resin, alkaline phenolic resin and urethane resin.
The raw material weight components according to the first, second and third embodiments described above can be used to prepare sand a, sand B and sand C, respectively;
the results of the performance tests of the above-mentioned sand a, sand B and sand C are shown in the following table:
| molding sand A | Molding sand B | Molding sand C | |
| Wet compression strength (Kpa) | 225.3 | 233.8 | 224.5 |
| Wet tensile strength (Kpa) | 28 | 25 | 24 |
| Refractoriness (. Degree. C.) | 1600 | 1550 | 1525 |
| Air permeability | 112 | 108 | 107 |
| Compactness (%) | 48.8 | 45.5 | 46.2 |
| Sand mould intensity (Kpa) | 254 | 248 | 235 |
As can be seen from the above table, sand a, sand B and sand C each have high strength and thermal stability to withstand various external forces and high temperatures.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The molding sand for preventing the formation of air holes is characterized by comprising the following raw materials in parts by weight: 70-80 parts of mixed silica sand, 10-20 parts of mixed clay, 3-5 parts of ferric oxide powder, 5-10 parts of anti-sticking sand mixture, 3-5 parts of adhesive and a proper amount of water.
2. The molding sand for preventing pore formation according to claim 1, wherein the mixed silica sand is a mixture of silica sand and reclaimed sand, and the mixing ratio of the silica sand to the reclaimed sand is 5:1.
3. The molding sand for preventing pore formation according to claim 1, wherein the method for preparing the mixed silica sand comprises the steps of:
(1) respectively carrying out impurity removal and pollution removal treatment on quartz sand and reclaimed sand, cleaning, drying and ball milling the cleaned quartz sand and reclaimed sand, and sieving the cleaned quartz sand and reclaimed sand with a 200-mesh standard sieve after ball milling to obtain 200-mesh quartz sand and reclaimed sand for later use;
(2) and (3) proportionally selecting quartz sand and reclaimed sand which are sieved by a mesh sieve, adding the quartz sand and the reclaimed sand into a mixer, and stirring at a speed of 400-600rpm for 15-20 minutes to mix, thereby obtaining the mixed silica sand.
4. The molding sand for preventing pore formation according to claim 1, wherein the mixed clay is a mixture of bentonite, bentonite clay and bauxite, and the mixing ratio of bentonite clay, bentonite clay and bauxite is 4:3:3.
5. The molding sand for preventing pore formation according to claim 1, wherein the method for preparing the mixed clay comprises the steps of:
(1) respectively crushing bentonite, wood clay and bauxite, and sieving with a 100-mesh standard sieve to obtain 100-mesh bentonite, wood clay and bauxite for later use;
(2) selecting bentonite, wood clay and bauxite which are sieved according to a proportion, adding the bentonite, the wood clay and the bauxite into a mixer to be uniformly stirred, adding a proper amount of water into the mixer to granulate, then sending the mixture into a calciner to be presintered for 20 minutes at 300-400 ℃, then sintering the mixture at 500-700 ℃, and taking out the mixture to obtain the granular mixed clay.
6. The molding sand for preventing pore formation according to claim 1, wherein the anti-stick sand mixture is a mixture of pulverized coal, alpha starch and loiron ore, and the mixing ratio of the pulverized coal, alpha starch and loiron ore is 2:2:1.
7. The molding sand for preventing pore formation according to claim 1, wherein the method for preparing the anti-stick sand mixture comprises the steps of:
(1) respectively crushing coal powder, alpha starch and loiron ore sand, and passing through a 100-mesh standard sieve to obtain 100-mesh coal powder, alpha starch and loiron ore sand for later use;
(2) the pulverized coal, alpha starch and loiron ore which are sieved by the sieve are selected according to the proportion, are added into a mixer to be stirred for 3-6 minutes for dry mixing, and then are added with a proper amount of water into the mixer to be wet mixed for 5-10 minutes, so that the anti-sticking sand mixture can be obtained.
8. The molding sand for preventing void formation according to claim 1, wherein the binder is one or a mixture of two or more of furan resin, resol resin, alkaline phenol resin and urethane resin.
9. Moulding sand according to any of claims 1 to 8, characterized in that the method for preparing it comprises the following steps:
s1, firstly, putting ferric oxide powder into a universal pulverizer for pulverization, and sieving the pulverized ferric oxide powder with a 100-mesh sieve;
s2, weighing mixed silica sand, mixed clay, ferric oxide powder, anti-sticking sand mixture and adhesive according to the formula amount, adding the mixed silica sand, the mixed clay and the adhesive according to the formula amount, mixing for 15 minutes in a mixer, adding the ferric oxide powder and the anti-sticking sand mixture according to the formula amount after uniformly mixing, heating to 70-80 ℃, and stirring for 20-25 minutes to obtain a mixed material;
s3, adding 3-5% of water in parts by weight into a mixer to mix with the mixed materials, thereby obtaining the molding sand.
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102029354A (en) * | 2010-12-31 | 2011-04-27 | 山东省源通机械股份有限公司 | Moulding sand additive for green sand casting of metal castings |
| CN103056281A (en) * | 2012-12-12 | 2013-04-24 | 青岛三合山精密铸造有限公司 | Preparation method of molding sands |
| CN103567359A (en) * | 2013-10-11 | 2014-02-12 | 铜陵市经纬流体科技有限公司 | Clay green sand for high-pressure molding and preparation method thereof |
| CN103567369A (en) * | 2013-10-11 | 2014-02-12 | 铜陵市经纬流体科技有限公司 | Clay molding sand for cast steel and preparation method thereof |
| CN103586399A (en) * | 2013-10-16 | 2014-02-19 | 昌利锻造有限公司 | Molding sand capable of quick air permeation and heat dissipation and preparation method thereof |
| CN104525849A (en) * | 2014-11-28 | 2015-04-22 | 山东旭光得瑞高新材料股份有限公司 | Wet-type molding sand environmental protection material and preparation method thereof |
| CN105478655A (en) * | 2015-12-31 | 2016-04-13 | 安徽创奇乐智能游乐设备有限公司 | Knar clay moulding sand prevented from adhering to casting and preparation method of knar clay moulding sand |
| CN107214291A (en) * | 2017-04-18 | 2017-09-29 | 芜湖市和蓄机械股份有限公司 | A kind of high temperature resistant, casting sand of high intensity and preparation method thereof |
| CN110340277A (en) * | 2019-07-09 | 2019-10-18 | 江阴天润造型材料科技有限公司 | A kind of precoated sand and the preparation method and application thereof for potassium steel with Sand sticking-resistant characteristic |
| CN111618235A (en) * | 2020-07-06 | 2020-09-04 | 南通华东油压科技有限公司 | Method for preventing sand sticking of oil duct of casting |
-
2022
- 2022-12-27 CN CN202211682938.7A patent/CN116117071A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102029354A (en) * | 2010-12-31 | 2011-04-27 | 山东省源通机械股份有限公司 | Moulding sand additive for green sand casting of metal castings |
| CN103056281A (en) * | 2012-12-12 | 2013-04-24 | 青岛三合山精密铸造有限公司 | Preparation method of molding sands |
| CN103567359A (en) * | 2013-10-11 | 2014-02-12 | 铜陵市经纬流体科技有限公司 | Clay green sand for high-pressure molding and preparation method thereof |
| CN103567369A (en) * | 2013-10-11 | 2014-02-12 | 铜陵市经纬流体科技有限公司 | Clay molding sand for cast steel and preparation method thereof |
| CN103586399A (en) * | 2013-10-16 | 2014-02-19 | 昌利锻造有限公司 | Molding sand capable of quick air permeation and heat dissipation and preparation method thereof |
| CN104525849A (en) * | 2014-11-28 | 2015-04-22 | 山东旭光得瑞高新材料股份有限公司 | Wet-type molding sand environmental protection material and preparation method thereof |
| CN105478655A (en) * | 2015-12-31 | 2016-04-13 | 安徽创奇乐智能游乐设备有限公司 | Knar clay moulding sand prevented from adhering to casting and preparation method of knar clay moulding sand |
| CN107214291A (en) * | 2017-04-18 | 2017-09-29 | 芜湖市和蓄机械股份有限公司 | A kind of high temperature resistant, casting sand of high intensity and preparation method thereof |
| CN110340277A (en) * | 2019-07-09 | 2019-10-18 | 江阴天润造型材料科技有限公司 | A kind of precoated sand and the preparation method and application thereof for potassium steel with Sand sticking-resistant characteristic |
| CN111618235A (en) * | 2020-07-06 | 2020-09-04 | 南通华东油压科技有限公司 | Method for preventing sand sticking of oil duct of casting |
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