CN102310157A - Blending ratio of mud core molding sand - Google Patents
Blending ratio of mud core molding sand Download PDFInfo
- Publication number
- CN102310157A CN102310157A CN201110309302A CN201110309302A CN102310157A CN 102310157 A CN102310157 A CN 102310157A CN 201110309302 A CN201110309302 A CN 201110309302A CN 201110309302 A CN201110309302 A CN 201110309302A CN 102310157 A CN102310157 A CN 102310157A
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- CN
- China
- Prior art keywords
- molding sand
- sand
- mud core
- blending ratio
- core molding
- 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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Abstract
The invention discloses a blending ratio of mud core molding sand. The mud core molding sand comprises fresh sand, thermosetting resin, starch, ammonium alum, carclazyte and dextrin with reasonable blending ratio, so that the molding sand has high dry and wet strength, good permeability, small gas generation, rapid curing, and low scrap rate of the mud core.
Description
Technical field
The invention belongs to casting technology field, especially relate to the proportioning of a kind of loam core molding sand.
Background technology
When Foundry Production interlayer blast pipe, two-layer inside and outside the foundry goods pipeline is divided into, internal layer is mainly used in exhaust; Skin is a water circulating pipe, because its inner-cavity structure is complicated, casting section thickness is thinner; Casting process is prone to casting flaws such as boiling in water for a while, then dress with soy, vinegar, etc. fire, cold shut, cinder hole, pore, and its Foundry Production difficulty is bigger.In process of production, adopt prior resin sand, compound grease sand, varnish sand etc.,,, cause foundry goods to be scrapped all because of boiling in water for a while, then dress with soy, vinegar, etc. fire, pore because above binding agent gas forming amount is bigger.
Summary of the invention
The objective of the invention is: the problem of avoiding prior art to exist provides the proportioning that proportioning is scientific and reasonable, reduce a kind of loam core molding sand of casting defect.
Technical scheme of the present invention is: be made up of following material by weight percentage: fresh sand 90-93%, heat reactive resin 3.8-4%, starch 2-2.5%, ammonia-alum 0.1-0.2%, potter's clay 1-1.5%, dextrin 0.8-1%.
The invention has the beneficial effects as follows: the present invention adopts starch, dextrin as adhesive, and ammonia-alum is also claimed alum, and as reinforcing agent, potter's clay has good plasticity; Heat reactive resin guarantees dry strength, through scientific and reasonable proportioning, makes molding sand have higher dried, wet strength; Good permeability, gas forming amount is low, and baked and cured is fast; The loam core scrappage is low, has improved the quality of foundry goods, mainly is applicable to the production of thin interlayer blast pipe of loam core complex structure, wall thickness.
The specific embodiment
Embodiment 1: be made up of following material by weight percentage: 30-50 order fresh sand 92%, heat reactive resin 3.6%, starch 2.2%, ammonia-alum 0.1%, potter's clay 1.2%, dextrin 0.9%.
Embodiment 2: be made up of following material by weight percentage: 30-50 order fresh sand 91.2%, heat reactive resin 3.8%, starch 2.5%, ammonia-alum 0.2%, potter's clay 1.5%, dextrin 0.8%.
Embodiment 3: be made up of following material by weight percentage: 30-50 order fresh sand 91.85%, heat reactive resin 4%, starch 2%, ammonia-alum 0.15%, potter's clay 1%, dextrin 1%.
Embodiment 4: be made up of following material by weight percentage: 30-50 order fresh sand 90.8%, heat reactive resin 4%, starch 2.5%, ammonia-alum 0.2%, potter's clay 1.5%, dextrin 1%.
Embodiment 5: be made up of following material by weight percentage: 30-50 order fresh sand 92.3%, heat reactive resin 3.8%, starch 2%, ammonia-alum 0.1%, potter's clay 1%, dextrin 0.8%.
More than the used heat reactive resin of each embodiment to be phenolic resins form through being heating and curing.
Claims (2)
1. the proportioning of a loam core molding sand is characterized in that: be made up of following material by weight percentage: fresh sand 90-93%, heat reactive resin 3.8-4%, starch 2-2.5%, ammonia-alum 0.1-0.2%, potter's clay 1-1.5%, dextrin 0.8-1%.
2. the proportioning of loam core according to claim 1 molding sand is characterized in that: said fresh sand adopts the 30-50 order.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110309302A CN102310157A (en) | 2011-10-13 | 2011-10-13 | Blending ratio of mud core molding sand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110309302A CN102310157A (en) | 2011-10-13 | 2011-10-13 | Blending ratio of mud core molding sand |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102310157A true CN102310157A (en) | 2012-01-11 |
Family
ID=45423945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110309302A Pending CN102310157A (en) | 2011-10-13 | 2011-10-13 | Blending ratio of mud core molding sand |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102310157A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102814461A (en) * | 2012-08-20 | 2012-12-12 | 合肥江淮铸造有限责任公司 | Molding sand for casting |
| CN103495692A (en) * | 2013-10-16 | 2014-01-08 | 合肥市田源精铸有限公司 | Mud core moulding sand for casting and preparation method thereof |
| CN103521691A (en) * | 2013-10-16 | 2014-01-22 | 合肥市田源精铸有限公司 | Modified bentonite molding sand and preparation method thereof |
| CN103521677A (en) * | 2013-10-16 | 2014-01-22 | 合肥市田源精铸有限公司 | Mud-core molding sand and preparation method thereof |
| CN105921683A (en) * | 2016-05-26 | 2016-09-07 | 合肥市田源精铸有限公司 | Molding sand used for magnesium alloy castings and preparing method thereof |
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| EP0606149A2 (en) * | 1993-01-05 | 1994-07-13 | Kao Corporation | Binder composition for mold and method for producing mold |
| EP0778095A1 (en) * | 1994-08-19 | 1997-06-11 | Kao Corporation | Binder composition for mold production and process for producing mold |
| CN1188695A (en) * | 1997-01-21 | 1998-07-29 | 龚林华 | Binder for casting loam core and producing method thereof |
| CN1317381A (en) * | 2001-04-30 | 2001-10-17 | 谷屏 | Hydrophilic adhesive of casting sand core and its preparing process |
| WO2005113174A1 (en) * | 2004-05-21 | 2005-12-01 | Kao Corporation | Resin coated sand |
| CN1974056A (en) * | 2006-12-15 | 2007-06-06 | 福州大学 | Process of preparing starch adesive for casting |
| DE102007008149A1 (en) * | 2007-02-19 | 2008-08-21 | Ashland-Südchemie-Kernfest GmbH | Thermal regeneration of foundry sand |
| CN101927315A (en) * | 2010-09-03 | 2010-12-29 | 吴江市液铸液压件铸造有限公司 | Moulding sand for casting noumenal cast product |
| CN101934344A (en) * | 2010-09-02 | 2011-01-05 | 吴江市液铸液压件铸造有限公司 | Moulding sand for vertically divided box-free shoot-squeeze moulding line |
-
2011
- 2011-10-13 CN CN201110309302A patent/CN102310157A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0606149A2 (en) * | 1993-01-05 | 1994-07-13 | Kao Corporation | Binder composition for mold and method for producing mold |
| EP0778095A1 (en) * | 1994-08-19 | 1997-06-11 | Kao Corporation | Binder composition for mold production and process for producing mold |
| CN1188695A (en) * | 1997-01-21 | 1998-07-29 | 龚林华 | Binder for casting loam core and producing method thereof |
| CN1317381A (en) * | 2001-04-30 | 2001-10-17 | 谷屏 | Hydrophilic adhesive of casting sand core and its preparing process |
| WO2005113174A1 (en) * | 2004-05-21 | 2005-12-01 | Kao Corporation | Resin coated sand |
| CN1974056A (en) * | 2006-12-15 | 2007-06-06 | 福州大学 | Process of preparing starch adesive for casting |
| DE102007008149A1 (en) * | 2007-02-19 | 2008-08-21 | Ashland-Südchemie-Kernfest GmbH | Thermal regeneration of foundry sand |
| CN101934344A (en) * | 2010-09-02 | 2011-01-05 | 吴江市液铸液压件铸造有限公司 | Moulding sand for vertically divided box-free shoot-squeeze moulding line |
| CN101927315A (en) * | 2010-09-03 | 2010-12-29 | 吴江市液铸液压件铸造有限公司 | Moulding sand for casting noumenal cast product |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102814461A (en) * | 2012-08-20 | 2012-12-12 | 合肥江淮铸造有限责任公司 | Molding sand for casting |
| CN103495692A (en) * | 2013-10-16 | 2014-01-08 | 合肥市田源精铸有限公司 | Mud core moulding sand for casting and preparation method thereof |
| CN103521691A (en) * | 2013-10-16 | 2014-01-22 | 合肥市田源精铸有限公司 | Modified bentonite molding sand and preparation method thereof |
| CN103521677A (en) * | 2013-10-16 | 2014-01-22 | 合肥市田源精铸有限公司 | Mud-core molding sand and preparation method thereof |
| CN105921683A (en) * | 2016-05-26 | 2016-09-07 | 合肥市田源精铸有限公司 | Molding sand used for magnesium alloy castings and preparing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120111 |