CN103447453B - Facing sand for precision casting - Google Patents
Facing sand for precision casting Download PDFInfo
- Publication number
- CN103447453B CN103447453B CN201310345985.7A CN201310345985A CN103447453B CN 103447453 B CN103447453 B CN 103447453B CN 201310345985 A CN201310345985 A CN 201310345985A CN 103447453 B CN103447453 B CN 103447453B
- Authority
- CN
- China
- Prior art keywords
- sand
- parts
- additive
- casting
- facing
- 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.)
- Expired - Fee Related
Links
- 239000004576 sand Substances 0.000 title claims abstract description 65
- 238000005495 investment casting Methods 0.000 title claims abstract description 15
- 239000000654 additive Substances 0.000 claims abstract description 9
- 230000000996 additive effect Effects 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000002270 dispersing agent Substances 0.000 claims abstract description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 53
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 claims description 11
- 229910052863 mullite Inorganic materials 0.000 claims description 11
- 239000010453 quartz Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 108010010803 Gelatin Proteins 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- 239000011230 binding agent Substances 0.000 claims description 3
- 229920000159 gelatin Polymers 0.000 claims description 3
- 239000008273 gelatin Substances 0.000 claims description 3
- 235000019322 gelatine Nutrition 0.000 claims description 3
- 235000011852 gelatine desserts Nutrition 0.000 claims description 3
- 238000010298 pulverizing process Methods 0.000 claims description 3
- YDEXUEFDPVHGHE-GGMCWBHBSA-L disodium;(2r)-3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical compound [Na+].[Na+].COC1=CC=CC(C[C@H](CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O YDEXUEFDPVHGHE-GGMCWBHBSA-L 0.000 claims description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 2
- 239000011707 mineral Substances 0.000 claims description 2
- 229910052593 corundum Inorganic materials 0.000 claims 1
- 238000007873 sieving Methods 0.000 claims 1
- 229910001845 yogo sapphire Inorganic materials 0.000 claims 1
- 238000005266 casting Methods 0.000 abstract description 14
- 239000000843 powder Substances 0.000 description 7
- 238000007493 shaping process Methods 0.000 description 7
- 238000000498 ball milling Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000003746 surface roughness Effects 0.000 description 4
- 238000003723 Smelting Methods 0.000 description 3
- 239000000470 constituent Substances 0.000 description 3
- 229910010271 silicon carbide Inorganic materials 0.000 description 3
- 229910052845 zircon Inorganic materials 0.000 description 3
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- 229920001732 Lignosulfonate Polymers 0.000 description 2
- 239000006004 Quartz sand Substances 0.000 description 2
- 206010039509 Scab Diseases 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 2
- 229910001570 bauxite Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- -1 emergy Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
Landscapes
- Mold Materials And Core Materials (AREA)
Abstract
The invention provides facing sand for precision casting. The facing sand consists of 50-70 parts of coarse sand being 40-100 meshes, 30-50 parts of fine sand being 100-300 meshes and 1-2 parts of an additive, wherein the coarse sand is high temperature resistant sharp sand; the fine sand is high temperature resistant spherical sand; the additive comprises water-soluble dispersant and bonder. The sand is easy to form, and the formed sand is high in strength, low in water content, the roughness of forming surface is low, sand burning does not exist during casting process and the collapsibility is good after the sand is cast.
Description
Technical field
The invention belongs to casting field, be specifically related to a kind of hot investment casting facing sand.
Background technology
When manufacturing complicated workpiece, adopt hot investment casting lower than other processing method costs, the scope of application is wider.In hot investment casting process, the stability of sand mold and surface property have a great impact casting yields.General casting requires that casting model powder intensity is high, good heat resistance, fine powder are few, acid resistance good, and hot investment casting also requires casting model powder easy-formation and shaping rear intensity is high, water content is low, molded surface roughness is low, not scab in casting process, collapsibility is good after casting.Sand surface roughness spherical in shape is low, collapsibility good but shaping strength is low, and then shaping strength is high, roughness is high for acute angle type, collapsibility is poor, and how obtaining all excellent casting model powder of various aspects of performance is a difficult point.
Summary of the invention
The object of the present invention is to provide a kind of hot investment casting facing sand, its easy-formation and shaping rear intensity is high, water content is low, molded surface roughness is low, not scab in casting process, collapsibility is good after casting.
For achieving the above object, present invention employs following technical proposals: a kind of hot investment casting facing sand is made up of the 40-100 object coarse sand of 50-70 part, the 100-300 object fine sand of 30-50 part, the additive of 1-2 part, described coarse sand is resistant to elevated temperatures sharp shape sand, described fine sand is resistant to elevated temperatures Spherical Sand, and described additive is water soluble dispersing agent and binding agent.
As preferably, described coarse sand by quartz, mullite through pulverizing, screening, blow clearly and obtain.This coarse sand is acute angle, has higher shaping strength, plays support effect in casting sand type.
As preferably, the fine sand that the nonmetallic mineral that it is alundum (Al2O3) that described fine sand refers to by main component (content is greater than 70%) adopts spray-on process obtained in the molten state, this fine sand is spherical in shape, or the fine sand of almost spherical that carborundum, emergy, zircon sand, nice foundry sand change surface configuration through ball milling and obtain.This fine sand spherical in shape mainly plays filling effect.
As preferably, described additive refers to the one in peo resin, gelatin, sodium lignin sulfonate, Tissuemat E.
The invention has the beneficial effects as follows: described coarse sand plays support effect in casting sand type, higher shaping strength can be provided; Described fine sand plays filling effect, and the surface of such sand mold is this spherical fine sand with regard to major part, and surface roughness is low; Described additive is pulverous, its water-soluble very good, good dispersion, as long as a small amount of water with regard to solubilized and the surface of moistening sand, has certain viscosity, sand can be made shaping, dry Post RDBMS, plays binding agent, maintains sand mold and provides certain intensity, high temperature in casting process can make additive melt, structural deterioration, it is good, conveniently stripped that this makes to cast rear collapsibility.
Detailed description of the invention
For the ease of understanding, below in conjunction with embodiment, the present invention is described in detail.
Embodiment 1
A kind of hot investment casting facing sand, by the 40-100 order quartz sands of 50 parts, the 100-300 order emergy of 48 parts, 2 parts of peo resin powder constituents, wherein quartz sand is crushed and screened by natural quartz stone and obtains, and emergy was through 2 hours ball millings.
Embodiment 2
A kind of hot investment casting facing sand, by the 40-100 order quartz sands of 69 parts, the 100-300 order carborundum of 30 parts, 1 part of peo resin powder constituent, wherein quartz sand is crushed and screened by natural quartz stone and obtains, also through 2 hours ball millings after carborundum pulverizing.
Embodiment 3
A kind of hot investment casting facing sand, by the 40-100 order mullite sand of 60 parts, the 100-300 order zircon sand of 38.5 parts, 1.5 parts of gelatin powder constituents, wherein mullite sand crushes and screens obtain by smelting mullite, and zircon sand was through 3 hours ball millings.
Embodiment 4
A kind of hot investment casting facing sand, is made up of the 40-100 order mullite sand of 65 parts, the 100-300 order nice foundry sand of 33 parts, 2 parts of sodium lignin sulfonates, and wherein mullite sand crushes and screens obtain by smelting mullite, and nice foundry sand was through 3 hours ball millings.
Embodiment 5
A kind of hot investment casting facing sand, is made up of the 40-100 order mullite sand of 70 parts, the 100-300 order bauxite of 30 parts, 2 parts of sodium lignin sulfonates, and wherein mullite sand crushes and screens obtain by smelting mullite, and bauxite adopts spray-on process to obtain in the molten state.
Claims (1)
1. a hot investment casting facing sand, is characterized in that: be made up of the 40-100 object coarse sand of 50-70 part, the 100-300 object fine sand of 30-50 part, the additive of 1-2 part; Described coarse sand is resistant to elevated temperatures sharp shape sand, and it is obtained through pulverizing, sieving, blow clearly by quartz, mullite; Described fine sand is resistant to elevated temperatures Spherical Sand, and the nonmetallic mineral that it is alundum (Al2O3) by main component adopts spray-on process to obtain in the molten state; Described additive is water soluble dispersing agent and binding agent, refers to the one in peo resin, gelatin, sodium lignin sulfonate, Tissuemat E.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310345985.7A CN103447453B (en) | 2013-08-10 | 2013-08-10 | Facing sand for precision casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310345985.7A CN103447453B (en) | 2013-08-10 | 2013-08-10 | Facing sand for precision casting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103447453A CN103447453A (en) | 2013-12-18 |
| CN103447453B true CN103447453B (en) | 2015-05-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310345985.7A Expired - Fee Related CN103447453B (en) | 2013-08-10 | 2013-08-10 | Facing sand for precision casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103447453B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105880463A (en) * | 2016-06-20 | 2016-08-24 | 安徽宜安精密机械零部件有限公司 | Sand for precision casting and preparation process of sand for precision casting |
| CN113800927A (en) * | 2021-09-30 | 2021-12-17 | 阳泉中昂新材料科技有限公司 | Sand for precision casting and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB895220A (en) * | 1960-04-19 | 1962-05-02 | Richard Tracy Carter | A process of making refractory shells for casting metal |
| CN1262154A (en) * | 1999-06-23 | 2000-08-09 | 罗守信 | Ceramic mould making technolog with ethyl silicate and refractory material |
| CN101934348A (en) * | 2010-09-30 | 2011-01-05 | 黄九连 | Surface sand for precise casting and preparation thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5131009B2 (en) * | 1973-05-09 | 1976-09-04 | ||
| JPS518115A (en) * | 1974-07-10 | 1976-01-22 | Hitachi Ltd | Igatano seisakuho |
-
2013
- 2013-08-10 CN CN201310345985.7A patent/CN103447453B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB895220A (en) * | 1960-04-19 | 1962-05-02 | Richard Tracy Carter | A process of making refractory shells for casting metal |
| CN1262154A (en) * | 1999-06-23 | 2000-08-09 | 罗守信 | Ceramic mould making technolog with ethyl silicate and refractory material |
| CN101934348A (en) * | 2010-09-30 | 2011-01-05 | 黄九连 | Surface sand for precise casting and preparation thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103447453A (en) | 2013-12-18 |
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| C06 | Publication | ||
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Deng Min Inventor before: Liu Yuqin |
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| CB03 | Change of inventor or designer information | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170605 Address after: Jinwan District Sanzao Town Airport West 519040 Guangdong city of Zhuhai province No. 619 factory Patentee after: Zhuhai Taida Precision Hardware Co., Ltd. Address before: 1299 No. 330000 Jiangxi province Nanchang Honggutan University Avenue Patentee before: Liu Yuqin |
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| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150520 Termination date: 20190810 |
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| CF01 | Termination of patent right due to non-payment of annual fee |