CN1017316B - Resin sand for foundry - Google Patents
Resin sand for foundryInfo
- Publication number
- CN1017316B CN1017316B CN 89100399 CN89100399A CN1017316B CN 1017316 B CN1017316 B CN 1017316B CN 89100399 CN89100399 CN 89100399 CN 89100399 A CN89100399 A CN 89100399A CN 1017316 B CN1017316 B CN 1017316B
- Authority
- CN
- China
- Prior art keywords
- resin sand
- sand
- resin
- component
- 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.)
- Expired
Links
- 239000004576 sand Substances 0.000 title claims abstract description 28
- 239000011347 resin Substances 0.000 title claims abstract description 16
- 229920005989 resin Polymers 0.000 title claims abstract description 16
- XPFVYQJUAUNWIW-UHFFFAOYSA-N furfuryl alcohol Chemical compound OCC1=CC=CO1 XPFVYQJUAUNWIW-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims abstract description 9
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 9
- -1 boron ions Chemical class 0.000 claims abstract description 6
- 230000002378 acidificating effect Effects 0.000 claims abstract description 3
- 238000000465 moulding Methods 0.000 claims description 10
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 8
- 239000004327 boric acid Substances 0.000 claims description 8
- 239000000243 solution Substances 0.000 claims description 8
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 6
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 4
- NBBJYMSMWIIQGU-UHFFFAOYSA-N Propionic aldehyde Chemical compound CCC=O NBBJYMSMWIIQGU-UHFFFAOYSA-N 0.000 claims description 4
- YLQBMQCUIZJEEH-UHFFFAOYSA-N Furan Chemical compound C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 3
- 230000001476 alcoholic effect Effects 0.000 claims description 3
- 150000001299 aldehydes Chemical class 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 238000009833 condensation Methods 0.000 claims description 3
- 230000005494 condensation Effects 0.000 claims description 3
- 238000007037 hydroformylation reaction Methods 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 claims description 3
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 claims description 3
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 2
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000007849 furan resin Substances 0.000 abstract description 5
- 230000008929 regeneration Effects 0.000 abstract description 4
- 238000011069 regeneration method Methods 0.000 abstract description 4
- 238000002360 preparation method Methods 0.000 abstract 2
- 229910052796 boron Inorganic materials 0.000 abstract 1
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 abstract 1
- 230000001988 toxicity Effects 0.000 abstract 1
- 231100000419 toxicity Toxicity 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 5
- 238000005266 casting Methods 0.000 description 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- 238000007792 addition Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 208000034189 Sclerosis Diseases 0.000 description 1
- IKHGUXGNUITLKF-XPULMUKRSA-N acetaldehyde Chemical compound [14CH]([14CH3])=O IKHGUXGNUITLKF-XPULMUKRSA-N 0.000 description 1
- 125000003158 alcohol group Chemical group 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
Landscapes
- Mold Materials And Core Materials (AREA)
Abstract
The present invention relates to resin sand used for foundry and a preparation method thereof. The resin sand is characterized in that the resin sand is composed of sand used for making a mould (core), polyvinyl alcohol water solution or polycondensate of polyvinyl alcohol and aldehyde, furfuralcohol or furan resin, and an acidic mixture which comprises boron ions. The resin sand has the characteristics of low cost, good collapsibility, easy regeneration, little toxicity, simple and convenient use, etc. The preparation technology is simple. The resin sand used for foundry 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, and regeneration is easy, and resin sand is used in the moulding of of low pollution (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 are reacted sclerosis 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 chilled 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 (3)
1, resin sand is used in moulding (or core) in a kind of Foundry Production, it is characterized in that having in the component:
A, components I 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), and its addition is the 0.5-2.5% (weight ratio) of moulding (or core) with sand,
B, composition, i.e. furfuryl alcohol resin or furane resins, its addition is the 1.0-2.5% (weight ratio) of moulding (or core) with sand,
C, component III, i.e. the acidic mixture of boracic ion, its addition is the 20-100% of components I and composition sum.
2, resin sand according to claim 1 is characterized in that said aldehydes is formaldehyde, propionic aldehyde.
3, resin sand according to claim 1 is characterized in that the component III is the alcoholic solution of 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.
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 CN1044246A (en) | 1990-08-01 |
| CN1017316B true 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) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4663764B2 (en) * | 2008-07-29 | 2011-04-06 | 群栄化学工業株式会社 | Binder composition for mold making and method for producing mold using binder composition for mold making |
| FR2948307B1 (en) * | 2009-07-24 | 2014-07-25 | Huettenes Albertus France | PROCESS FOR OBTAINING A BODY FORMED FROM A GRANULAR MIXTURE |
| CN102898985B (en) * | 2012-08-28 | 2013-12-18 | 石家庄世易糠醛糠醇有限公司 | Preparation method for furan nitrogen-free environment protection casting resin adhesive |
| 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 |
| CN107282870B (en) * | 2017-07-11 | 2019-01-11 | 马鞍山市兴隆铸造有限公司 | A kind of preparation method of high intensity furan resin-sand |
| CN110918869B (en) * | 2019-11-14 | 2020-11-20 | 上海金范机械铸造有限公司 | A kind of 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
Also Published As
| Publication number | Publication date |
|---|---|
| CN1044246A (en) | 1990-08-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3348287B2 (en) | Phenol-formaldehyde resin composition | |
| US4495316A (en) | Acid-curable fluoride-containing no-bake foundry resins | |
| EP3666813B1 (en) | Self-hardening organic synthetic resin mixture used for additive manufacturing, and application therefor | |
| WO2010117022A1 (en) | Curing agent composition | |
| WO1995009892A1 (en) | Ester cured no-bake foundry binder system | |
| JPH0733464B2 (en) | Modifier for aqueous base solution of phenolic resole resin | |
| JP2831794B2 (en) | Method of manufacturing sand mold for castings | |
| CN1017316B (en) | Resin sand for foundry | |
| US3755229A (en) | Foundry core compositions | |
| EP0668803A1 (en) | Ester cured no-bake foundry binder system | |
| JP3487778B2 (en) | Mold manufacturing method | |
| CN1031953A (en) | The manufacture method of core mixture mateiral for casting | |
| JPH07113077B2 (en) | Improved ester curing agent for phenolic resin binder systems | |
| JPS6131737B2 (en) | ||
| JP3203257B2 (en) | Acid-curable refractory granular material composition for mold molding | |
| JPH0571335B2 (en) | ||
| CA1191993A (en) | Furan resin binder for molding and core sands | |
| JP2542144B2 (en) | Binder composition for organic ester-curable foundry sand and method for producing mold using the same | |
| JPS6312700B2 (en) | ||
| JP3453485B2 (en) | Method for treating casting sand and method for producing mold | |
| CN1410466A (en) | Organic ester hardening alkaline phenolic resin and its preparation method | |
| JP2504660B2 (en) | Organic ester-curable molding sand curing agent composition and method for producing mold using the same | |
| JP2831830B2 (en) | Binder composition for foundry sand | |
| US4515935A (en) | Catalysts for foundry core binders | |
| JP2892470B2 (en) | Binder composition for foundry sand |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| 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 |