CN1097661A - Novel casting binder and manufacture method thereof - Google Patents
Novel casting binder and manufacture method thereof Download PDFInfo
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- CN1097661A CN1097661A CN 93108764 CN93108764A CN1097661A CN 1097661 A CN1097661 A CN 1097661A CN 93108764 CN93108764 CN 93108764 CN 93108764 A CN93108764 A CN 93108764A CN 1097661 A CN1097661 A CN 1097661A
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- organic acid
- solid organic
- sand
- waterglass
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Abstract
The present invention is to provide a kind of novel casting binder and manufacture method thereof.It is characterized in that: raw materials such as employing sodium carbonate, sodium acid carbonate, solid organic acid, cellulose ether, carbohydrate, waterglass react under the stirring at normal temperature condition, mixing, thereby make the foundry industry binding agent of required model.The present invention's its sand core surface strength height, nexine intensity under the prerequisite of nontoxic, non-environmental-pollution is low, has produced main performances such as good mouldability, gas permeability, deformability, collapsibility.Overcome the shortcoming of the routed property difference of organic binder bond insufficient formabilities such as closing fatty oil, tung oil and waterglass.The present invention can also directly adopt moor sand blending type core sand safely and reliably.
Description
The present invention relates to the foundry industry binding agent, particularly a kind of novel binders that is applicable to cast steel, cast iron and non-ferrous metal.
At present, the most general casting binder of domestic use closes fatty oil, tung oil and waterglass, and dry strength height, the collapsibility of closing fatty oil and tung oil are good, but insufficient formability, and must surround or bury with damp sand or dry sand after the moulding and protected.Nonetheless, big slightly sand core yet can modification, so close the use that fatty oil and tung oil all are confined to the smallclothes sand core.These pure organic matter casting binders are when cast, and burning produces a large amount of pernicious gas contaminated environment, especially closes fatty oil, and workman's skin is produced stimulates irritated effect, and some area is the explicit order forbidding.Water-glass sand intensity height, good moldability is fit to big castings production and uses.But sodium silicate sand collapsibility is poor, and foundry goods shakes out and clears up difficulty, often need to adopt the big sudden and violent cleaning of water, but this processing method makes easily foundry goods produce inner fine fisssure.Other has a kind of furane resins, after employing drier and the hot box core shooting technology, has overcome the shortcoming of above-mentioned insufficient formability, but because equipment investment is big, production cost height, and problem of environmental pollutions such as pernicious gas and noise.So from the fifties so far China fail generally to adopt always.
The object of the present invention is to provide a kind of nontoxic, non-environmental-pollution, can solve the problem of organic binder bond insufficient formabilities such as closing fatty oil, tung oil and waterglass collapsibility difference, can further improve these two important performances of gas permeability and deformability again, and can directly adopt moor sand to mix the novel casting binder of manufacturing mold core sand safely and reliably.
Technical solution of the present invention is: novel casting binder is formed less than the water of 60 parts of weights by the heavy carbohydrate of the heavy sodium acid carbonate of 1-3 part, 3-5 part heavy sodium carbonate, 1-3 part heavy solid organic acid, 1-5 part heavy water-soluble cellulose ether, 1-8 part, greater than the waterglass of 40 parts of weights.Wherein said solid organic acid is aliphatic and aromatic series, and saturated or unsaturated solid organic acid and Main Ingredients and Appearance are the organic acid solid organic matters.
For making this binding agent, adopt following method manufacturing:
A. by required model formulation weight, weighing water, sodium acid carbonate and sodium carbonate are made into alkaline solution in a reaction tank, drop into carbohydrate, solid organic acid and the cellulose ether of the required weight of dissolving then successively.
B. by same model formulation weight, take out waterglass, place another reaction tank, and the semi-finished product that A makes are added wherein mixing together, promptly get required type product.A, two steps of B all stir at normal temperatures and carry out.
Core sand of the present invention has good mouldability, strong after the moulding from doing from hard energy force rate waterglass, and dried sand core surface strength height, be to the lining from table and gradually fall variation, promptly surperficial hard, inner loose, thereby air permeability and good, deformability and collapsibility have been produced, overcome and closed fatty oil and tung oil sand insufficient formability, and the water-glass sand shortcomings such as difficulty of shaking out, and have characteristics such as nontoxic non-environmental-pollution.
According to subordinate list embodiments of the invention are illustrated below:
Subordinate list 1 is a compositing formula of the present invention.
Subordinate list 2 compares for the performance of the present invention and prior art.
Embodiment:
Compositing formula shown in subordinate list 1, its manufacture method can be carried out in two steps: the first step is by required model formulation weight, weighing water, sodium carbonate and sodium acid carbonate, in a reaction tank, under the stirring at normal temperature condition, be made into alkaline solution, under similarity condition, drop into carbohydrate, solid organic acid and the cellulose ether of the required weight of dissolving then successively.
Second step was taken out waterglass by same model formulation weight, place another reaction tank, and under the stirring at normal temperature condition, the semi-finished product that the first step is made added wherein mixing together, get final product required type product.
The said waterglass of the present invention is the intensity of protection type core sand, and solid organic acid is the surperficial dry strength that strengthens sand core, reduces its internal intensity simultaneously.Carbohydrate and cellulose ether are the wet strengths that improves core sand, reduce the sand core internal intensity.Carbohydrate also has the hydrotropy effect in addition, promptly improves solubility and the dissolution velocity of solid organic acid in alkali lye.The mixed liquor of sodium carbonate and sodium acid carbonate is the solvent of solid organic acid, and in mixed manufacturing mold core sand and baked sand core process, produce an amount of carbon dioxide, the formation of favourable core sand silicon gel and improve wet strength, increase the escaped quantity of gas in the sand core drying course, make sand core inside more loose.
Claims (4)
1, a kind of novel casting binder, it is characterized in that, by the heavy carbohydrate of the heavy sodium acid carbonate of 1-3 part, 3-5 part heavy sodium carbonate, 1-3 part heavy solid organic acid, 1-5 part heavy water-soluble cellulose ether, 1-8 part, greater than the waterglass of 40 parts of weights, form less than the water of 60 parts of weights.
2, binding agent according to claim 1 is characterized in that: described solid organic acid is that aliphatic and aromatic series, saturated or unsaturated solid organic acid and Main Ingredients and Appearance are the organic acid solid organic matters.
3, a kind of manufacture method of making the described novel casting binder of claim 1, it is characterized in that: by required model formulation weight, weighing water, sodium acid carbonate and sodium carbonate are made into alkaline solution in a reaction tank under the stirring at normal temperature condition, under similarity condition, drop into carbohydrate, solid organic acid and the cellulose ether of the required weight of dissolving then successively.
4, the manufacture method of novel casting binder according to claim 3 is characterized in that: by same model formulation weight, takes out waterglass and places another reaction tank, and
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93108764 CN1097661A (en) | 1993-07-17 | 1993-07-17 | Novel casting binder and manufacture method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93108764 CN1097661A (en) | 1993-07-17 | 1993-07-17 | Novel casting binder and manufacture method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1097661A true CN1097661A (en) | 1995-01-25 |
Family
ID=4987295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93108764 Pending CN1097661A (en) | 1993-07-17 | 1993-07-17 | Novel casting binder and manufacture method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1097661A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1045733C (en) * | 1996-12-16 | 1999-10-20 | 华南理工大学 | Bell socket sand core for centrifugal casting iron drain-pipe and production method thereof |
| CN1053129C (en) * | 1997-01-21 | 2000-06-07 | 龚林毕 | Binder for casting loam core and producing method thereof |
| CN100444986C (en) * | 2006-01-23 | 2008-12-24 | 沈阳汇亚通铸造材料有限责任公司 | Ester curing type sand binder for casting and its preparation method |
| CN101287561B (en) * | 2005-08-13 | 2014-02-19 | 乔治·费希尔汽车铸件有限责任公司 | Method for casting core mass or mould by moulding materials |
| CN113579162A (en) * | 2021-08-02 | 2021-11-02 | 李景忠 | Renewable inorganic adhesive shell mold casting integrated molding process |
-
1993
- 1993-07-17 CN CN 93108764 patent/CN1097661A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1045733C (en) * | 1996-12-16 | 1999-10-20 | 华南理工大学 | Bell socket sand core for centrifugal casting iron drain-pipe and production method thereof |
| CN1053129C (en) * | 1997-01-21 | 2000-06-07 | 龚林毕 | Binder for casting loam core and producing method thereof |
| CN101287561B (en) * | 2005-08-13 | 2014-02-19 | 乔治·费希尔汽车铸件有限责任公司 | Method for casting core mass or mould by moulding materials |
| CN100444986C (en) * | 2006-01-23 | 2008-12-24 | 沈阳汇亚通铸造材料有限责任公司 | Ester curing type sand binder for casting and its preparation method |
| CN113579162A (en) * | 2021-08-02 | 2021-11-02 | 李景忠 | Renewable inorganic adhesive shell mold casting integrated molding process |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
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| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |