CN1008698B - The additive of silicate sand - Google Patents
The additive of silicate sandInfo
- Publication number
- CN1008698B CN1008698B CN 88105425 CN88105425A CN1008698B CN 1008698 B CN1008698 B CN 1008698B CN 88105425 CN88105425 CN 88105425 CN 88105425 A CN88105425 A CN 88105425A CN 1008698 B CN1008698 B CN 1008698B
- Authority
- CN
- China
- Prior art keywords
- sand
- additive
- silicate sand
- inorganics
- muriate
- 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 49
- 239000000654 additive Substances 0.000 title claims abstract description 33
- 230000000996 additive effect Effects 0.000 title claims abstract description 33
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 239000006188 syrup Substances 0.000 claims abstract description 12
- 235000020357 syrup Nutrition 0.000 claims abstract description 12
- 229920002472 Starch Polymers 0.000 claims abstract description 9
- 235000019698 starch Nutrition 0.000 claims abstract description 9
- 239000008107 starch Substances 0.000 claims abstract description 9
- 230000003647 oxidation Effects 0.000 claims abstract description 4
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 4
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 6
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims description 6
- BZSXEZOLBIJVQK-UHFFFAOYSA-N 2-methylsulfonylbenzoic acid Chemical compound CS(=O)(=O)C1=CC=CC=C1C(O)=O BZSXEZOLBIJVQK-UHFFFAOYSA-N 0.000 claims description 3
- 229920001353 Dextrin Polymers 0.000 claims description 3
- 239000004375 Dextrin Substances 0.000 claims description 3
- 235000019270 ammonium chloride Nutrition 0.000 claims description 3
- 235000019425 dextrin Nutrition 0.000 claims description 3
- 229910001629 magnesium chloride Inorganic materials 0.000 claims description 3
- KMUONIBRACKNSN-UHFFFAOYSA-N potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 claims description 3
- 239000012286 potassium permanganate Substances 0.000 claims description 3
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims description 3
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 2
- DPDMMXDBJGCCQC-UHFFFAOYSA-N [Na].[Cl] Chemical compound [Na].[Cl] DPDMMXDBJGCCQC-UHFFFAOYSA-N 0.000 claims description 2
- 239000001110 calcium chloride Substances 0.000 claims description 2
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 238000005266 casting Methods 0.000 abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 6
- ORVGYTXFUWTWDM-UHFFFAOYSA-N silicic acid;sodium Chemical compound [Na].O[Si](O)(O)O ORVGYTXFUWTWDM-UHFFFAOYSA-N 0.000 abstract description 6
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 12
- 239000004115 Sodium Silicate Substances 0.000 description 7
- 229910052911 sodium silicate Inorganic materials 0.000 description 7
- 238000004140 cleaning Methods 0.000 description 6
- 239000003110 molding sand Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 235000019353 potassium silicate Nutrition 0.000 description 5
- 239000007864 aqueous solution Substances 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 4
- 208000037656 Respiratory Sounds Diseases 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
- 239000002253 acid Substances 0.000 description 2
- 235000011837 pasties Nutrition 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- AMAICRYCMCVAHT-UHFFFAOYSA-K calcium;sodium;trichloride Chemical compound [Na+].[Cl-].[Cl-].[Cl-].[Ca+2] AMAICRYCMCVAHT-UHFFFAOYSA-K 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052914 metal silicate Inorganic materials 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Landscapes
- Mold Materials And Core Materials (AREA)
Abstract
A kind of silicate sand additive of making casting mold and core, additive is made up of starch syrup, muriate and inorganics with oxidation susceptibility, after silicic acid sodium sand behind the adding additive is made casting mold and core, no matter dry coal-falling sand or wet method water-bath sand removal, be controlled at when being not more than 350 ℃ when going into water temp, knock-out capability is good, the casting quality height.As seen additive of the present invention also is good defeated and dispersed dose.
Description
The present invention is a kind of additive of silicate sand, belongs to casting mould material.
Metal silicate sand is owing to the environment that improves the Foundry Production scene is widely adopted, particularly silicic acid sodium sand (sodium silicate sand) is because cost is low, easy to use, widespread usage in foundary industry, but this sand is made casting mold and core after casting, dry coal-falling sand is bad, improves the major issue that knock-out capability just becomes foundary industry.
China's later stage in the sixties proposes water explosition blast cleaning technology, uses this technology and makes knockout work very simple, but but occur the problem that foundry goods easily cracks in the water explosition blast cleaning technology.Improve the dry coal-falling sand of silicic acid sodium sand and eliminate the water explosition blast cleaning crackle, just become the current a great problem of China's casting industry.
English Patent 1546079 proposes a kind of binding agent and is intended to improve dry coal-falling sand, binding agent is made up of water glass (water glass) and defeated and dispersed dose, defeated and dispersed dose is the DE value less than 5 starch hydrolyzates, behind this defeated and dispersed dose and the binding agent of sodium silicate aqueous solution as roughing sand, silicic acid sodium sand knock-out capability is improved according to reports.Use this binding agent then the ratio of the content of molding sand mesosilicic acid sodium and starch hydrolyzates be fixed value, can not adapt to roughing sand quality difference, require the water glass in the molding sand and the variation of starch hydrolyzates ratio, thereby be not suitable for the foundary industry of China.
Task of the present invention is the additive that proposes a kind of silicate sand, after additive adds silicate sand, can improve the dry coal-falling sand of this sand and eliminate the water explosition blast cleaning crackle.
Additive of the present invention is by starch syrup, muriate and have the pasty substance that the inorganics of oxidation susceptibility is formed.Contain dextrin 60～85% in the syrup, muriate can be sodium-chlor, calcium chloride, magnesium chloride, ammonium chloride.Inorganics with oxidisability can be a potassium permanganate, sodium chlorate, clorox, potassium bichromate or the like.The content of muriate, oxidisability inorganics can be respectively 0.1～10% in the additive, and surplus is syrup.
Additive of the present invention is independent of outside roughing sand and the water glass, and the difference of the visual roughing sand quality of the add-on of additive is and different during use, and molding sand mesosilicic acid sodium and content of additive ratio can be aligned arbitrarily.
Use the silicic acid sodium sand of additive of the present invention, promptly add sodium silicate aqueous solution again by the roughing sand doping, make casting mold, core, both improved the dry coal-falling sand of foundry goods after the casting, eliminated the water explosition blast cleaning crackle again, perfect water explosition blast cleaning technology, it is below 350 ℃ that the regulation foundry goods is gone into bath temperature, naming this technology is the water-bath sand removal, reaches water-bath sand removal flawless, has finished the invention task.
It is 64%, 70%, 84% starch syrup that preparation contains the dextrin amount, syrup adds sodium-chlor in the pasty state, calcium chloride, magnesium chloride or ammonium chloride add oxidisability inorganics potassium permanganate again, sodium chlorate, clorox or potassium bichromate, the add-on of the two is divided equally 0.1%, 0.5%, and 1%, 3%, 5%, 7%, 10% etc. multiple, make the additive of multiple different proportionings, additive and roughing sand, sodium silicate aqueous solution is mixed into molding sand, makes casting mold, and the casting mold hardening process is identical with former sodium silicate sand, after the casting, dry coal-falling sand is good, and wet method water-bath sand removal, control are gone into bath temperature and be not more than 350 ℃, foundry goods splits by force in nothing finishes sand removal work in the explosive sound, the foundry goods flawless occurs.This be because: the burning-effects such as Fa vapour of being heated of this additive, make the reduction of sodium silicate sand retained strength, add water glass, syrupy water-soluble, after the foundry goods entry, under less pressure for vaporization, foundry goods is shaked out totally.
The method of additive preparation molding sand is: add this additive behind the roughing sand siccative mixing, mixed grind was not less than 2 minutes, continued mixed grind to evenly stand-by after adding sodium silicate aqueous solution again.
Use above-mentioned molding sand and make casting mold and core, foundry goods is railway vehicle coupler, bogie side frame, after the casting, uses the dry method vibrating shakeout, and knock-out capability is good.So additive of the present invention also is good defeated and dispersed dose.The same casting mold of using the silicic acid sodium sand of additive of the present invention, wet method water-bath sand removal is used in the casting back, and control is gone into water temp and is not more than 350 ℃, foundry goods flawless after the sand removal, any surface finish, outer, interior equal flawless.
Claims (10)
1, a kind of additive of silicate sand, composition is characterized in that based on syrup syrup is the starch syrup, and additive is by the starch syrup, and muriate is formed with the inorganics with oxidation susceptibility.Muriate can be respectively 0.1%～10% with the content with inorganics of oxidation susceptibility, and surplus is syrup.
2,, it is characterized in that containing in the starch syrup dextrin 60～85% by the silicate sand additive shown in the claim 1.
3,, it is characterized in that muriate is a sodium-chlor by the silicate sand additive shown in the claim 1.
4,, it is characterized in that muriate is a calcium chloride by the silicate sand additive shown in the claim 1.
5,, it is characterized in that muriate is a magnesium chloride by the silicate sand additive shown in the claim 1.
6,, it is characterized in that muriate is an ammonium chloride by the silicate sand additive shown in the claim 1.
7, by the silicate sand additive shown in the claim 1, the inorganics that it is characterized in that having oxidisability is a potassium permanganate.
8, by the silicate sand additive shown in the claim 1, the inorganics that it is characterized in that having oxidisability is a sodium chlorate.
9, by the silicate sand additive shown in the claim 1, the inorganics that it is characterized in that having oxidisability is a clorox.
10, by the silicate sand additive shown in the claim 1, the inorganics that it is characterized in that having oxidisability is a potassium bichromate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88105425 CN1008698B (en) | 1988-06-23 | 1988-06-23 | The additive of silicate sand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88105425 CN1008698B (en) | 1988-06-23 | 1988-06-23 | The additive of silicate sand |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1030373A CN1030373A (en) | 1989-01-18 |
| CN1008698B true CN1008698B (en) | 1990-07-11 |
Family
ID=4833619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88105425 Expired CN1008698B (en) | 1988-06-23 | 1988-06-23 | The additive of silicate sand |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1008698B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK1752235T3 (en) * | 2005-08-13 | 2008-08-25 | Fischer Georg Automobilguss | Process for making casting cores or molds |
-
1988
- 1988-06-23 CN CN 88105425 patent/CN1008698B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN1030373A (en) | 1989-01-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| 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 |