CN1021170C - Fuse quartz sand filler - Google Patents
Fuse quartz sand filler Download PDFInfo
- Publication number
- CN1021170C CN1021170C CN 88106230 CN88106230A CN1021170C CN 1021170 C CN1021170 C CN 1021170C CN 88106230 CN88106230 CN 88106230 CN 88106230 A CN88106230 A CN 88106230A CN 1021170 C CN1021170 C CN 1021170C
- Authority
- CN
- China
- Prior art keywords
- quartz sand
- fuse
- arc
- filler
- content
- 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 - Fee Related
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Abstract
The present invention relates to quartz sand stuffing for a fuse. Which is characterized in that the content of silicon dioxide is from 98.2% to 99.6%, the content of ferric oxide is from 0.02% to 0.15%, a mesh number is from 20 to 60 meshes, and the coefficient of angularity is less than 1.30. by using the fuse of the stuffing, the present invention has the advantages of good breaking capacity (500V, 120KA) and lower I<2>t value (when the value is 820VO/39KA, an average value is 189*10<3>A<2>S).
Description
The present invention relates to be used for the quartz sand filler that fuse is made arc-extinguishing medium.
Filler is the important component part of fuse, when melt fuses, absorbs arc energy by filler, makes arc extinction.Quartz sand has good arc-extinguishing property, thereby obtains extensive use as the fuse filler.Yet, obtain desirable arc extinction performance, still need natural siliceous sand (or quartzite) is carried out various processed, make granular size, grain shape and the chemical composition of quartz sand meet the arc extinguishing requirement.When particle size was big, the quartz sand of loading in the same fuse shell was just few, and the absorbent arc energy of institute is also few, thereby is unfavorable for arc extinguishing; Particle size hour, the plasma that the melt gasification produces quartz sand around the fusing when flowing is easy to form the liquid metal bridge, stop plasma to enter the quartz sand filler periphery, electric arc is longer, and the arcing time is also longer, the pressure of electric arc is also bigger, is unfavorable for arc extinguishing equally.Grain shape, promptly the round as a ball degree of particle also is the key factor that influences the filler arc extinction performance, it is very big to the influence of breaking capacity.The quartz sand packed density of circular granular is bigger, and particle surface contact is for the some contact, and from integral body, it is uniform that the space distributes; And the packed density of the tangible quartz sand particle of corner angle is less, and gap between particles varies skewness.When melt fusing produced electric arc, if circular granular, the plasma of arc channel can be by the space to evenly conduction all around, and electric arc fully contacts with circular quartz sand particle, helps arc extinguishing.Otherwise the tangible quartz sand of corner angle is unfavorable for arc extinguishing.Say from chemical composition, the content height of silicon dioxide, favourable to arc extinguishing, and the content of di-iron trioxide is few more good more.
Existing a kind of quartz sand filler through processed, its dioxide-containing silica is not less than 99.6%, and ferric oxide content is not more than 0.02%, and its particle size is between 30 orders～120 orders.Though this quartz sand filler has arc extinction performance preferably, because to the having relatively high expectations of chemical composition, thereby the production cost of quartz sand filler is improved greatly.
The object of the present invention is to provide and a kind ofly have good arc-extinguishing property and the quartz sand filler of low production cost.
The quartz sand filler that obtains through processed provided by the invention, its dioxide-containing silica is lower than 99.6%, and the content of di-iron trioxide is much higher than 0.02%, and its order number is-20 orders～+ 60 orders, and the dihedral coefficient is less than 1.30.The dihedral coefficient is the coefficient of the round as a ball degree of characterizing particles.
Quartz sand filler provided by the invention has good breaking capacity (500V, 120KA), and it cut-offs I
2The t value is lower, and (mean value during 820V/39KA is 189 * 10
3A
2S), lower by 10% than above-mentioned prior art, and have good current limiting performance.Because raw material availability improves, the expense in the production process reduces, thereby can reduce production costs significantly.
The dioxide-containing silica of one embodiment of the invention is lower than 99.6% and be greater than or equal to 98.2%, and the content of di-iron trioxide is higher than 0.02% and be less than or equal to 0.15%, and the order number is-20 orders～+ 60 orders, and the dihedral coefficient is less than 1.30.To the above-mentioned qualification of ferric oxide content, both can make quartz sand filler have good arc-extinguishing property, help again reducing production costs.
Claims (1)
1, a kind of fuse quartz sand filler with good arc-extinguishing property is characterized in that: the content of silicon dioxide is greater than or equal to 98.2% and be lower than 99.6%; The content of di-iron trioxide is higher than 0.02% and be less than or equal to 0.15%; The order number is-20 orders～+ 60 orders; The dihedral coefficient is less than 1.30.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88106230 CN1021170C (en) | 1988-08-29 | 1988-08-29 | Fuse quartz sand filler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88106230 CN1021170C (en) | 1988-08-29 | 1988-08-29 | Fuse quartz sand filler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1040887A CN1040887A (en) | 1990-03-28 |
| CN1021170C true CN1021170C (en) | 1993-06-09 |
Family
ID=4834152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88106230 Expired - Fee Related CN1021170C (en) | 1988-08-29 | 1988-08-29 | Fuse quartz sand filler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1021170C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102122595A (en) * | 2010-01-12 | 2011-07-13 | 旭程电子(深圳)有限公司 | Arc extinguisher for fuse |
| CN103198982B (en) * | 2013-03-07 | 2015-02-18 | 上海电气钠硫储能技术有限公司 | Inorganic gelling agent for fuse for sodium-sulfur cell module and preparation technology thereof |
| CN103560053B (en) * | 2013-11-19 | 2015-09-23 | 浙江茗熔电器保护系统有限公司 | A kind of method of operation of fuse solidifying equipment |
-
1988
- 1988-08-29 CN CN 88106230 patent/CN1021170C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1040887A (en) | 1990-03-28 |
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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 | ||
| 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 |