CN104550639A - Molding sand sodium silicate binding and collapsing agent for casting - Google Patents
Molding sand sodium silicate binding and collapsing agent for casting Download PDFInfo
- Publication number
- CN104550639A CN104550639A CN201310489404.7A CN201310489404A CN104550639A CN 104550639 A CN104550639 A CN 104550639A CN 201310489404 A CN201310489404 A CN 201310489404A CN 104550639 A CN104550639 A CN 104550639A
- Authority
- CN
- China
- Prior art keywords
- agent
- sodium silicate
- molding sand
- casting
- sand
- 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.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
- B22C1/16—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents
- B22C1/167—Mixtures of inorganic and organic binding agents
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
The invention discloses a molding sand sodium silicate binding and collapsing agent for casting. The agent comprises raw materials in percentage by weight as follows: 94.5-98% of sodium silicate, 1.5-2.5% of glucose powder, 0.2-2% of light calcium carbonate powder, 0.2-0.5% of a suspending agent and 0.1-0.5% of a preservative. According to the agent, the sodium silicate, an organic collapsing agent, an inorganic collapsing agent, the suspending agent and the preservative are successfully integrated, the agent is good in high-temperature collapsibility, excellent in sand binding preventing capability and capable of being adapted to multiple hardening methods, the dry strength of molding sand is high, the wet binding force of the molding sand is large, the drying time after CO2 hardening is shortened, and the recovery rate of used sand can be significantly increased.
Description
Technical field
The invention belongs to casting technology field, be specifically related to the sticky agent of bursting of a kind of moulding sand for casting waterglass.
Background technology
For the shortcoming of the collapsibility difference that water glass type sandbinder has, many founder authors have done huge effort, achieve suitable achievement, many dispersants, modifier have put into production application, collapsibility improves, simultaneously also create many new problems, as core strength decline, adaptive faculty is poor, unstable product quality.In waterglass, only introduce organic dispersant, effectively can't solve the homogeneity question of high temperature collapsibility and dispersant.
Summary of the invention
In order to overcome the above-mentioned technical problem that prior art field exists, the object of the invention is to, provide a kind of moulding sand for casting waterglass sticky agent of bursting, high temperature collapsibility is good, and make molding sand wet binding element power strong, dry bond strength is good.
The sticky agent of bursting of moulding sand for casting waterglass provided by the invention, raw material composition of the percetage by weight of this sticky agent of bursting: waterglass 94.5 ~ 98%, powdered glucose 1.5 ~ 2.5%, precipitated calcium carbonate powder are anti-0.2 ~ 2%, suspending agent 0.2 ~ 0.5%, rotten agent 0.1 ~ 0.5%.
The sticky agent of bursting of moulding sand for casting waterglass provided by the invention, its beneficial effect is:
(1) having the good feature of environmental protection, is the hope of casting green;
(2) good collapsibility is had;
(3) molding sand dry strength is high, and the molding sand cohesive force that wets is strong;
(4) multiple sclerosis mode is adapted to;
(5) CO is shortened
2drying time after sclerosis;
(6) excellent Sand sticking-resistant ability is had;
(7) easy to operate.
Detailed description of the invention
Below in conjunction with an embodiment, the molding sand method for casting production of flange casting provided by the invention is described in detail.
Embodiment
The sticky agent of bursting of the moulding sand for casting waterglass of the present embodiment, the percetage by weight according to each composition takes raw material, fills a prescription as follows: waterglass 96%, powdered glucose 2%, precipitated calcium carbonate powder 1%, sodium phosphate trimer 0.5%, borax 0.5%.
Waterglass, organic dispersant, inorganic dispersant, suspending agent, anticorrisive agent are successfully become integration by product of the present invention, and the cohesive force that has that good high temperature collapsibility, molding sand dry strength are high, molding sand wets is strong, have excellent Sand sticking-resistant ability, can adapt to multiple sclerosis mode, shorten CO
2drying time after sclerosis, the old sand rate of recovery can be significantly improved.
Claims (1)
1. the sticky agent of bursting of moulding sand for casting waterglass, is characterized in that: the raw material composition of its percentage by weight: waterglass 94.5 ~ 98%, powdered glucose 1.5 ~ 2.5%, precipitated calcium carbonate powder are anti-0.2 ~ 2%, suspending agent 0.2 ~ 0.5%, rotten agent 0.1 ~ 0.5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310489404.7A CN104550639A (en) | 2013-10-18 | 2013-10-18 | Molding sand sodium silicate binding and collapsing agent for casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310489404.7A CN104550639A (en) | 2013-10-18 | 2013-10-18 | Molding sand sodium silicate binding and collapsing agent for casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104550639A true CN104550639A (en) | 2015-04-29 |
Family
ID=53068303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310489404.7A Pending CN104550639A (en) | 2013-10-18 | 2013-10-18 | Molding sand sodium silicate binding and collapsing agent for casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104550639A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107127291A (en) * | 2017-04-01 | 2017-09-05 | 东风精密铸造安徽有限公司 | A kind of water-glass sand core formula of moltening mold castings |
| CN109014020A (en) * | 2018-07-02 | 2018-12-18 | 四川顺宇铸造有限公司 | A kind of casting moulding sand hardening agent and production application process |
| CN109822040A (en) * | 2017-11-23 | 2019-05-31 | 宁夏共享化工有限公司 | A kind of two-component water hardening temperature core box binder |
-
2013
- 2013-10-18 CN CN201310489404.7A patent/CN104550639A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107127291A (en) * | 2017-04-01 | 2017-09-05 | 东风精密铸造安徽有限公司 | A kind of water-glass sand core formula of moltening mold castings |
| CN109822040A (en) * | 2017-11-23 | 2019-05-31 | 宁夏共享化工有限公司 | A kind of two-component water hardening temperature core box binder |
| CN109822040B (en) * | 2017-11-23 | 2020-10-16 | 宁夏共享化工有限公司 | Two-component water hardening warm core box binder |
| CN109014020A (en) * | 2018-07-02 | 2018-12-18 | 四川顺宇铸造有限公司 | A kind of casting moulding sand hardening agent and production application process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150429 |
|
| WD01 | Invention patent application deemed withdrawn after publication |