CN1044246A - A kind of resin casting and compound method thereof - Google Patents
A kind of resin casting and compound method thereof Download PDFInfo
- Publication number
- CN1044246A CN1044246A CN 89100399 CN89100399A CN1044246A CN 1044246 A CN1044246 A CN 1044246A CN 89100399 CN89100399 CN 89100399 CN 89100399 A CN89100399 A CN 89100399A CN 1044246 A CN1044246 A CN 1044246A
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- CN
- China
- Prior art keywords
- component
- sand
- moulding
- resin
- core
- 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 present invention relates to a kind of resin casting and compound method thereof, be characterized in using sand by moulding (core), the condensation polymer of polyvinyl alcohol water solution or polyvinyl alcohol and aldehydes, the acidic mixture of furfuryl alcohol or furane resins, boracic ion is formed, it is low to have cost, collapsibility is good, regenerates easily, lacks characteristics such as malicious, easy to use.Preparing process is simple.Can replace chilled furan resin sand.
Description
The invention belongs to casting moulding (core) material.
Chilled furan resin sand is used in existing casting, is used for the casting mold (or core) of ferrous and nonferrous metals foundry goods, but its cost height, collapsibility is also undesirable, and regeneration is difficulty, and the reclaim equiment complexity has pollution to environment, so its application is subjected to certain limitation.
It is low to the purpose of this invention is to provide a kind of cost, and collapsibility is good, comprehensive good, and regeneration is easy, and resin sand is used in the moulding of of low pollution (or core).
Technical essential of the present invention is: remove in the resin sand component and comprise that moulding (or core) (refers generally to roughing sand with sand, also can be old sand or reclaimed sand) outside, also has component 1, promptly containing the 5-25%(weight ratio) aqueous solution of polyvinyl alcohol or polyvinyl alcohol and aldehydes be (as acetaldehyde, propionic aldehyde etc., formaldehyde preferably) condensation polymer, the hydroformylation degree is the 15-85% mole; Component 2, i.e. furfuryl alcohol or furane resins (as furfuryl alcohol modified urea-formaldehyde resin or furfural alcohol modified phenolic resin etc.); Component 3, i.e. the acidic mixture of boracic ion, as the alcoholic solution (as methyl alcohol, ethanol etc.) of p-methyl benzenesulfonic acid and boric acid, or the mixture of phosphoric acid and boric acid, or the alcohol of sulfuric acid and boric acid (as methyl alcohol, ethanol etc.) solution etc., the polyvinyl alcohol structures formula is
, the furfuryl alcohol structural formula is
Because the effect of component 3, component 1 and component 2 have higher intensity at normal temperatures.
For making better performances, each component (weight ratio) is preferably: component 1 and component 2 additions are the 0.5-2.5% of moulding (or core) with sand, and component 3 additions are the 20-100% of component 1 and component 2 sums.
The compound method of this resin sand is, and is reinforced in the following order: use to moulding (or core) earlier to add component 3 in the sand, adding component 1 and component 2(again is that component 1 and component 2 can add one of them earlier, but also the time spent adds), and mix.
The present invention can reach casting dimension accuracy and the surface smoothness that chilled furan resin sand reaches, and cohesive force is strong, good combination property, cost is reduced significantly, and collapsibility is good, and is tasteless, substantially nontoxic, regeneration is easy, and nitrogen content is few, is difficult for making foundry goods to produce gas hole defect, stickness is not good, can replace firmly but furan resin-sand, be a kind of moulding (core) material that promotional value is arranged very much, can be widely used in the moulding or the coremaking of ferrous and nonferrous metals foundry goods.
Embodiment 1:
Get roughing sand 100kg, add the ethanolic solution 1kg that contains 75% p-methyl benzenesulfonic acid and 1% boric acid (accounting for solution weight percentage), add aqueous solution 1kg and the furfuryl alcohol 1kg that contains 10% polyvinyl alcohol (accounting for solution weight percentage) again, evenly mix with puddle mixer (or manual).
Embodiment 2:
Get roughing sand 100kg, add the ethanolic solution 1kg contain 49% sulfuric acid and 1% boric acid, adding the hydroformylation degree again is 75% mole polyvinyl alcohol and the condensation polymer 1kg of formaldehyde, adds furane resins 1kg(furfural alcohol modified phenolic resin at last) even mixing can use.
Claims (5)
1, a kind of resin casting comprises that moulding (or core) uses sand, it is characterized in that having in the component:
A, component 1 promptly contain the aqueous solution of 5-25% (weight ratio) polyvinyl alcohol or the condensation polymer of polyvinyl alcohol and aldehydes (the hydroformylation degree is the 15-85% mole).
B, component 2, i.e. furfuryl alcohol or furane resins,
C, component 3, the i.e. acidic mixture of boracic ion.
2, resin sand according to claim 1 is characterized in that said aldehydes is a formaldehyde.
3, resin sand according to claim 1 is characterized in that component 3 is the alcoholic solution that contains p-methyl benzenesulfonic acid and boric acid, or the mixture of phosphoric acid and boric acid, or the alcoholic solution of sulfuric acid and boric acid.
4, according to claim 1,2 or 3 described resin sands, it is characterized in that the addition of component 1 and component 2 is the 0.5-2.5% of moulding (or core) with sand, the addition of component 3 is the 20-100% of component 1 and component 2 sums.
5, according to the compound method of claim 1,2,3 or 4 described resin sands, it is characterized in that reinforced in the following order: use to moulding (or core) earlier to add component 3 in the sand, add component 1 and component 2 again, and mix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89100399 CN1017316B (en) | 1989-01-21 | 1989-01-21 | Resin sand for foundry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89100399 CN1017316B (en) | 1989-01-21 | 1989-01-21 | Resin sand for foundry |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1044246A true CN1044246A (en) | 1990-08-01 |
| CN1017316B CN1017316B (en) | 1992-07-08 |
Family
ID=4853843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89100399 Expired CN1017316B (en) | 1989-01-21 | 1989-01-21 | Resin sand for foundry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1017316B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102105241A (en) * | 2008-07-29 | 2011-06-22 | 群荣化学工业株式会社 | Binder composition for casting mold formation and process for producing casting mold using the binder composition for casting mold formation |
| CN102470423A (en) * | 2009-07-24 | 2012-05-23 | 哈特尼斯·艾伯特斯法国公司 | Method for producing a body made from a granular mixture |
| CN102898985A (en) * | 2012-08-28 | 2013-01-30 | 石家庄世易糠醛糠醇有限公司 | Preparation method for furan nitrogen-free environment protection casting resin adhesive |
| CN106040965A (en) * | 2016-08-15 | 2016-10-26 | 合肥江淮铸造有限责任公司 | Molding sand for casting |
| CN107282870A (en) * | 2017-07-11 | 2017-10-24 | 马鞍山市兴隆铸造有限公司 | A kind of preparation method of high intensity furan resin-sand |
| CN110918869A (en) * | 2019-11-14 | 2020-03-27 | 上海金范机械铸造有限公司 | High-temperature-resistant coating for resin sand casting and preparation method thereof |
-
1989
- 1989-01-21 CN CN 89100399 patent/CN1017316B/en not_active Expired
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102105241A (en) * | 2008-07-29 | 2011-06-22 | 群荣化学工业株式会社 | Binder composition for casting mold formation and process for producing casting mold using the binder composition for casting mold formation |
| CN102470423A (en) * | 2009-07-24 | 2012-05-23 | 哈特尼斯·艾伯特斯法国公司 | Method for producing a body made from a granular mixture |
| CN102470423B (en) * | 2009-07-24 | 2014-06-18 | 哈特尼斯·艾伯特斯法国公司 | Method for producing a body made from a granular mixture |
| CN102898985A (en) * | 2012-08-28 | 2013-01-30 | 石家庄世易糠醛糠醇有限公司 | Preparation method for furan nitrogen-free environment protection casting resin adhesive |
| CN106040965A (en) * | 2016-08-15 | 2016-10-26 | 合肥江淮铸造有限责任公司 | Molding sand for casting |
| CN106040965B (en) * | 2016-08-15 | 2017-12-29 | 合肥江淮铸造有限责任公司 | A kind of moulding sand for casting |
| CN107282870A (en) * | 2017-07-11 | 2017-10-24 | 马鞍山市兴隆铸造有限公司 | A kind of preparation method of high intensity furan resin-sand |
| CN110918869A (en) * | 2019-11-14 | 2020-03-27 | 上海金范机械铸造有限公司 | High-temperature-resistant coating for resin sand casting and preparation method thereof |
| CN110918869B (en) * | 2019-11-14 | 2020-11-20 | 上海金范机械铸造有限公司 | High-temperature-resistant coating for resin sand casting and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1017316B (en) | 1992-07-08 |
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| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |