CN103769529A - Graphite sand for casting - Google Patents
Graphite sand for casting Download PDFInfo
- Publication number
- CN103769529A CN103769529A CN201210417596.6A CN201210417596A CN103769529A CN 103769529 A CN103769529 A CN 103769529A CN 201210417596 A CN201210417596 A CN 201210417596A CN 103769529 A CN103769529 A CN 103769529A
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- CN
- China
- Prior art keywords
- sand
- graphite
- magnesium oxide
- bentonite
- amorphous graphite
- 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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- Mold Materials And Core Materials (AREA)
Abstract
The invention relates to graphite sand which is characterized by comprising the following components in percent by weight: 65-85% of amorphous graphite sand, 5-25% of magnesium oxide sand and 10-15% of bentonite. The particle size of the amorphous graphite sand, magnesium oxide sand and bentonite ranges within 85-120 mesh; each of the amorphous graphite sand, magnesium oxide sand and bentonite comprises particles with the same size or different sizes within 85-120 mesh. In any case, the content of screen underflow is more strictly limited as compared with that of the oversize product, and the amorphous graphite sand, magnesium oxide sand and bentonite with the particle sizes of less than 85 mesh are not suitable for being used as sand for casting.
Description
Technical field
The present invention relates to a kind of casting graphite sand, the roughing sand while being used as blending type, core compound.
Background technology
In prior art, the purposes of amorphous graphite in foundry industry, is a kind of auxiliary material take powdery as type, in coating, dressing or type, the core compound of core, this kind of mineral are processed into sand grains close the precedent of making foundry sand and never have.The present invention is processed into sand shape material by natural without determining graphite mineral, its content of graphite is on this basis below 90%, and in Foundry Production, as blending type, core mixes the roughing sand of use, be used as the type of manufacturing the casting special metal of some performance and requiring special foundry goods, core sand.
Summary of the invention
The object of this invention is to provide a kind of casting graphite sand.
Above-mentioned purpose of the present invention is achieved by the following technical programs.
A kind of graphite sand, comprises amorphous graphite, it is characterized in that each composition weight content is 65%-85% amorphous graphite sand; 15%-25% magnesium oxide sand; 10%-15% bentonite.
Above-mentioned amorphous graphite sand, is characterized in that said amorphous graphite sand, and magnesium oxide sand and bentonitic granularity preferably occupy 85 orders between 120 orders.
Graphite sand, the one in magnesium oxide sand and a bentonitic particle size range thus, can also several granularities form.But in any case, all tackle the content of the content comparison oversize of screenings and do stricter restriction, be narrower than 80 object amorphous graphite sands, magnesium oxide sand and bentonite should not use as foundry sand.
The specific embodiment:
Embodiment 1: a kind of graphite sand, comprise amorphous graphite, it is characterized in that each composition weight content is 65% amorphous graphite sand; 25% magnesium oxide sand; 15% bentonite.
Amorphous graphite sand, magnesium oxide sand and bentonitic granularity, be advisable to occupy 85 orders.
Embodiment 2: a kind of graphite sand, comprise amorphous graphite, it is characterized in that each composition weight content is 85% amorphous graphite sand; 15% magnesium oxide sand; 10% bentonite.
Amorphous graphite sand, magnesium oxide sand and bentonitic granularity, be advisable to occupy 100 orders.
Claims (2)
1. a graphite sand, comprises amorphous graphite, it is characterized in that each composition weight content is 65%-85% amorphous graphite sand; 15%-25% magnesium oxide sand; 10%-15% bentonite.
2. graphite sand according to claim 1, is characterized in that said amorphous graphite sand, and magnesium oxide sand and bentonitic granularity occupy 85 orders between 120 orders.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210417596.6A CN103769529A (en) | 2012-10-18 | 2012-10-18 | Graphite sand for casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210417596.6A CN103769529A (en) | 2012-10-18 | 2012-10-18 | Graphite sand for casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103769529A true CN103769529A (en) | 2014-05-07 |
Family
ID=50562548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210417596.6A Pending CN103769529A (en) | 2012-10-18 | 2012-10-18 | Graphite sand for casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103769529A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106424534A (en) * | 2016-11-08 | 2017-02-22 | 上海航天精密机械研究所 | Mg-alloy casting sand |
-
2012
- 2012-10-18 CN CN201210417596.6A patent/CN103769529A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106424534A (en) * | 2016-11-08 | 2017-02-22 | 上海航天精密机械研究所 | Mg-alloy casting sand |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140507 |