CN105964876A - Benshan green clay type molding sand used for pressure plate casting and a preparing method thereof - Google Patents
Benshan green clay type molding sand used for pressure plate casting and a preparing method thereof Download PDFInfo
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- CN105964876A CN105964876A CN201610135928.XA CN201610135928A CN105964876A CN 105964876 A CN105964876 A CN 105964876A CN 201610135928 A CN201610135928 A CN 201610135928A CN 105964876 A CN105964876 A CN 105964876A
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- molding sand
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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
- B22C1/02—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
-
- 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
- B22C1/167—Mixtures of inorganic and organic binding agents
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Inorganic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Benshan green clay type molding sand used for pressure plate casting and a preparing method thereof are disclosed. The molding sand is prepared from 21-29 parts by weight of Benshan green clay, 11-17 parts by weight of zircon powder, 24-32 parts by weight of olivine sand, 12-18 parts by weight of anorthite, 10-15 parts by weight of granite waste, 6-12 parts by weight of gum tragacanth powder, 5-10 parts by weight of refining slag, 7-13 parts by weight of perlite, 4-8 parts by weight of poly(vinyl alcohol), 3-5 parts by weight of magnesium chloride, 2-4 parts by weight of sodium dichromate and 100-120 parts by weight of a modifier. The Benshan green clay and the gum tragacanth powder, the poly(vinyl alcohol), the magnesium chloride, and the like are matched with each other and adopted as an adhesive, and therefore the prepared molding sand is excellent in adhesiveness and is excellent in plasticity, fire resistance and gas permeability. The molding sand is simple and easily available in components, simple in preparing method and low in cost, is an environmental friendly product with excellent properties, and can be widely used in the field of pressure plate casting.
Description
Technical field
The present invention relates to a kind of this mountain green mud molding sand for casting pressure plates and preparation method thereof, belong to molding sand technology neck
Territory.
Background technology
Molding sand is most important Modeling Material in sand casting process, typically by casting model powder, moulding sand binder and additional thing
Mix according to a certain percentage Deng Modeling Material, it is also possible to natural silica sand argillaceous.Molding sand effect in Foundry Production
Particularly important, the quality of Quality of sand mold directly affects the castings such as appearance quality and foundry goods generation sand holes, pore, the burning into sand of foundry goods and lacks
Falling into, the casting wasted product caused because of the poor quality of molding sand accounts for the 30-50% of the total waste product of foundry goods.Continuous along with foundry engieering
Development, more and more higher to the performance requirement of molding sand, the molding sand for casting pressure plates also exists combination property difference in the market
Shortcoming, affects the quality of foundry goods.Therefore, the casting pressure plates molding sand developing a kind of excellent combination property has great importance.
Summary of the invention
Present invention aims to the deficiencies in the prior art, it is provided that a kind of this mountain green mud molding sand for casting pressure plates
And preparation method thereof.The molding sand excellent combination property that the present invention prepares, has excellent plasticity, caking property, fire resistance and thoroughly
Gas.
The technical solution used in the present invention is as follows:
A kind of this mountain green mud molding sand for casting pressure plates, is made up of the raw material of following weight portion: this mountain green mud 21-29, zirconium English
Powder 11-17, olivine sand 24-32, anorthite 12-18, granite waste material 10-15, gum tragacanth powder 6-12, refining slag 5-
10, nacrite 7-13, polyvinyl alcohol 4-8, magnesium chloride 3-5, sodium dichromate 2-4, modifier 100-120；
The preparation method of described modifying agent is as follows: a, take the raw material of following weight portion: polyacrylamide 18-26, Polyethylene Glycol 14-
22, calcium lignosulfonate 12-18, acetylation double starch adipate 5-10, Rhizoma amorphophalli powder 20-30, yellow starch gum 15-25, acrylic acid
Methyl ester 45-55, butyl methacrylate 30-40, liquid rosin resin 10-15, dodecylbenzene sodium sulfonate 2-3, polysorbate60
1-2, Ammonium persulfate. 0.2-0.3, sodium sulfite 0.1-0.2；B, take Rhizoma amorphophalli powder, yellow starch gum, the double starch adipic acid of acetylation
Ester mix homogeneously, adds the water being equivalent to mixture 3-5 times amount, and heating in water bath, to 75-85 DEG C, stirs 30-40min, is cooled to
40-50 DEG C, add liquid rosin resin, dodecylbenzene sodium sulfonate and polysorbate60, stir 15-20min, stand-by；C, by poly-third
Acrylamide, Polyethylene Glycol, calcium lignosulfonate mix homogeneously, add the water being equivalent to mixture 4-6 times amount, stirs 8-14min,
Adding acrylic acid methyl ester., butyl methacrylate, Ammonium persulfate., bisulfite, heating in water bath, to 70-80 DEG C, stirs 1-2h,
It is subsequently adding the solution that step b prepares, continues stirring 20-30min, be cooled to less than 45 DEG C, then regulate with saturated ammonia aqueous solution
PH value is 9-10.
The preparation method of a kind of this mountain green mud molding sand for casting pressure plates, comprises the following steps:
(1) anorthite, granite waste material, refining slag, nacrite are pulverized respectively, cross 150-200 mesh sieve, 20-30s is dry mixed；
(2) this mountain green mud, zirconium English powder, olivine sand, gum tragacanth powder, polyvinyl alcohol, magnesium chloride, sodium dichromate are dry mixed 30-
40s, then adds the water wet mixing 2-3min accounting for mixture weight 2-3%, adds the mixture that step (1) prepares, wet mixing 3-
4min；
(3) mixture that step (3) prepares is mixed with modifying agent, 1500-2000rpm high speed dispersion 4-7min, filter, i.e.
Can.
Modifying agent of the present invention is possible not only to improve the mobility of molding sand, breathability and dispersibility, can also increase type simultaneously
The performances such as the thermostability of sand, mechanical strength and plasticity, thus ensure that combination property and the quality stability of molding sand, reach to change
Kind surface quality of continuous castings, it is to avoid the appearance of the defects such as casting falling sand, burning into sand, pore.
Beneficial effects of the present invention:
The present invention uses this mountain green mud and gum tragacanth powder, polyvinyl alcohol, magnesium chloride etc. to be collocated with each other as binding agent, makes to prepare
Molding sand have excellence caking property, there is excellent plasticity, fire resistance and breathability simultaneously.Moulding snad composition of the present invention is simple
Being easy to get, preparation method is simple, with low cost, is the environmentally friendly machine of a kind of excellent performance, can apply to platen casting widely
Make field.
Detailed description of the invention
A kind of this mountain green mud molding sand for casting pressure plates, is made up of the raw material of following weight (kg): this mountain green mud 24,
Zirconium English powder 15, olivine sand 28, anorthite 16, granite waste material 12, gum tragacanth powder 8, refining slag 7, nacrite 9, poly-second
Enol 6, magnesium chloride 4, sodium dichromate 3, modifier 110；
The preparation method of described modifying agent is as follows: a, take the raw material of following weight (kg): polyacrylamide 22, Polyethylene Glycol 17,
Calcium lignosulfonate 15, acetylation double starch adipate 7, Rhizoma amorphophalli powder 25, yellow starch gum 20, acrylic acid methyl ester. 50, metering system
Acid butyl ester 34, liquid rosin resin 12, dodecylbenzene sodium sulfonate 2.5, polysorbate60 1.5, Ammonium persulfate. 0.3, sulfurous acid
Hydrogen sodium 0.15；B, take Rhizoma amorphophalli powder, yellow starch gum, the double starch adipate mix homogeneously of acetylation, add and be equivalent to 4 times of mixture
The water of amount, heating in water bath to 75 DEG C, stirs 40min, is cooled to 50 DEG C, add liquid rosin resin, dodecylbenzene sodium sulfonate
And polysorbate60, stir 15min, stand-by；C, by polyacrylamide, Polyethylene Glycol, calcium lignosulfonate mix homogeneously, add quite
In the water of mixture 5 times amount, stir 12min, add acrylic acid methyl ester., butyl methacrylate, Ammonium persulfate., sulfurous acid
Hydrogen, heating in water bath to 75 DEG C, stir 1h, be subsequently adding step b prepare solution, continue stirring 20min, be cooled to 45 DEG C with
Under, then be 10 with saturated ammonia aqueous solution regulation pH value.
The performance test of the molding sand that above-described embodiment prepares is as shown in the table:
| Project | Unit | Testing result |
| Green compression strength | kPa | 172 |
| Hot green tensile strength | kPa | 4.8 |
| Water content | % | 4.4 |
| Compact rate of molding | % | 50 |
| Breathability | - | 159 |
| Shatter index | % | 88 |
| Refractoriness | ℃ | 1750 |
Claims (2)
1. this mountain green mud molding sand for casting pressure plates, it is characterised in that be made up of the raw material of following weight portion: this mountain is green
Mud 21-29, zirconium English powder 11-17, olivine sand 24-32, anorthite 12-18, granite waste material 10-15, gum tragacanth powder 6-
12, refining slag 5-10, nacrite 7-13, polyvinyl alcohol 4-8, magnesium chloride 3-5, sodium dichromate 2-4, modifier 100-120；
The preparation method of described modifying agent is as follows: a, take the raw material of following weight portion: polyacrylamide 18-26, Polyethylene Glycol 14-
22, calcium lignosulfonate 12-18, acetylation double starch adipate 5-10, Rhizoma amorphophalli powder 20-30, yellow starch gum 15-25, acrylic acid
Methyl ester 45-55, butyl methacrylate 30-40, liquid rosin resin 10-15, dodecylbenzene sodium sulfonate 2-3, polysorbate60
1-2, Ammonium persulfate. 0.2-0.3, sodium sulfite 0.1-0.2；B, take Rhizoma amorphophalli powder, yellow starch gum, the double starch adipic acid of acetylation
Ester mix homogeneously, adds the water being equivalent to mixture 3-5 times amount, and heating in water bath, to 75-85 DEG C, stirs 30-40min, is cooled to
40-50 DEG C, add liquid rosin resin, dodecylbenzene sodium sulfonate and polysorbate60, stir 15-20min, stand-by；C, by poly-third
Acrylamide, Polyethylene Glycol, calcium lignosulfonate mix homogeneously, add the water being equivalent to mixture 4-6 times amount, stirs 8-14min,
Adding acrylic acid methyl ester., butyl methacrylate, Ammonium persulfate., bisulfite, heating in water bath, to 70-80 DEG C, stirs 1-2h,
It is subsequently adding the solution that step b prepares, continues stirring 20-30min, be cooled to less than 45 DEG C, then regulate with saturated ammonia aqueous solution
PH value is 9-10.
The preparation method of this mountain green mud molding sand for casting pressure plates the most according to claim 1, it is characterised in that include
Following steps:
(1) anorthite, granite waste material, refining slag, nacrite are pulverized respectively, cross 150-200 mesh sieve, 20-30s is dry mixed；
(2) this mountain green mud, zirconium English powder, olivine sand, gum tragacanth powder, polyvinyl alcohol, magnesium chloride, sodium dichromate are dry mixed 30-
40s, then adds the water wet mixing 2-3min accounting for mixture weight 2-3%, adds the mixture that step (1) prepares, wet mixing 3-
4min；
(3) mixture that step (3) prepares is mixed with modifying agent, 1500-2000rpm high speed dispersion 4-7min, filter, i.e.
Can.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610135928.XA CN105964876A (en) | 2016-03-10 | 2016-03-10 | Benshan green clay type molding sand used for pressure plate casting and a preparing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610135928.XA CN105964876A (en) | 2016-03-10 | 2016-03-10 | Benshan green clay type molding sand used for pressure plate casting and a preparing method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN105964876A true CN105964876A (en) | 2016-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610135928.XA Withdrawn CN105964876A (en) | 2016-03-10 | 2016-03-10 | Benshan green clay type molding sand used for pressure plate casting and a preparing method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN105964876A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107513659A (en) * | 2017-09-08 | 2017-12-26 | 常德市达鑫电气有限公司 | A kind of platen manufacture method and platen |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004130380A (en) * | 2002-10-09 | 2004-04-30 | Keiji Miyauchi | Mold composition, and method for producing mold |
| CN103521696A (en) * | 2013-10-16 | 2014-01-22 | 合肥市田源精铸有限公司 | Molding sand for pressure plate casting and preparation method of molding sand |
| CN103586396A (en) * | 2013-10-16 | 2014-02-19 | 昌利锻造有限公司 | Molding sand for non-ferrous castings and preparation method thereof |
| CN104525841A (en) * | 2014-12-31 | 2015-04-22 | 铜陵市经纬流体科技有限公司 | High-performance wet green sand for steel casting and preparing method thereof |
-
2016
- 2016-03-10 CN CN201610135928.XA patent/CN105964876A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004130380A (en) * | 2002-10-09 | 2004-04-30 | Keiji Miyauchi | Mold composition, and method for producing mold |
| CN103521696A (en) * | 2013-10-16 | 2014-01-22 | 合肥市田源精铸有限公司 | Molding sand for pressure plate casting and preparation method of molding sand |
| CN103586396A (en) * | 2013-10-16 | 2014-02-19 | 昌利锻造有限公司 | Molding sand for non-ferrous castings and preparation method thereof |
| CN104525841A (en) * | 2014-12-31 | 2015-04-22 | 铜陵市经纬流体科技有限公司 | High-performance wet green sand for steel casting and preparing method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 工人高级操作技能训练辅导丛书编委会: "《铸造工》", 28 February 1991, 机械工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107513659A (en) * | 2017-09-08 | 2017-12-26 | 常德市达鑫电气有限公司 | A kind of platen manufacture method and platen |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20160928 |
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| WW01 | Invention patent application withdrawn after publication |