CN101434487A - Porous silicon carbide sagger for dewaxing and manufacturing method thereof - Google Patents
Porous silicon carbide sagger for dewaxing and manufacturing method thereof Download PDFInfo
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- CN101434487A CN101434487A CNA200810236853XA CN200810236853A CN101434487A CN 101434487 A CN101434487 A CN 101434487A CN A200810236853X A CNA200810236853X A CN A200810236853XA CN 200810236853 A CN200810236853 A CN 200810236853A CN 101434487 A CN101434487 A CN 101434487A
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- silicon carbide
- porous silicon
- waxing
- seggar
- clay
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Abstract
The invention provides a porous silicon carbide seggar used in wax removing, and a manufacturing method thereof, wherein, the porous segger comprises a seggar body with a pit, and is characterized in that raw materials of the seggar body consist of 5 to 10 percent of charcoal powder or wood sawdust or rice husks, 20 to 30 percent of clay and 60 to 75 percent of silicon carbide; the seggar is manufactured by dosing, forming and baking. The porous silicon carbide seggar used in wax removing is characterized by excellent heat-conducting property, good thermal shock resistance and air permeability and long service life.
Description
Technical field
The present invention relates to saggar, relate in particular to a kind of saggar that in the special cermacis production process, uses in the de-waxing operation, and the manufacture method of this saggar.
Background technology
The de-waxing operation is that special cermacis adopts very important operation in the hot die-casting molding art production process, so-called de-waxing is that the special cermacis base substrate that contains a certain amount of paraffin is imbedded in the alms bowl body that the absorption powder is housed, and by certain technology paraffin is discharged base substrate and burn off in tunnel like wax expelling furnace or other kiln.At present used saggar is mainly clay class saggar, though it is low to have cost of manufacture, and the characteristics that starting material are cheap, its poor thermal shock resistance, work-ing life is short, promptly can scrap because of cracking after on average using 4-5 time.And these saggars of scrapping do not have the value of recycling because starting material are cheap, can only become the industrial refuse that destroys environment.Even more serious is, saggar in stove in the operational process time regular meeting cracking two halves take place, cause stifled stove accident.Handle stifled stove accident, must be earlier kiln temperature be reduced to 400 ℃ from 1100 ℃, then the segmentation of whole piece kiln is removed, the more stifled saggar of institute is all drawn out.Entire treatment process not only workload is big, and must blowing out carry out, and the direct and consequential damage that causes is quite big.
Summary of the invention
An object of the present invention is to provide a kind of porous silicon carbide sagger that is used for de-waxing, have that heat conductivility is good, characteristics of resistance to sudden heating and good permeability, long service life.
Another object of the present invention provides a kind of above-mentioned manufacture method that is used for the porous silicon carbide sagger of de-waxing.
Technical scheme of the present invention is: the porous silicon carbide sagger that is used for de-waxing, comprise alms bowl body with pit, the raw material that it is characterized in that said alms bowl body is made up of charcoal end or wood sawdust or rice husk, clay and silicon carbide, each compositions in weight percentage is charcoal end or wood sawdust or rice husk 5%-10%, clay 20%-30%, silicon carbide 60%-75% is through batching, moulding, fire and make.
The above-mentioned manufacture method that is used for the porous silicon carbide sagger of de-waxing is: elder generation mixes raw material and stirs by described proportioning, then mixed raw materials is packed into and beat or the moulding of machine pressure mode by manual in the mould with ing, at last the alms bowl body of moulding is sent in the kiln and fired, firing temperature is 1350 ℃-1450 ℃, and the cooling kiln discharge promptly obtains being used for the porous silicon carbide sagger of de-waxing.
Saggar of the present invention, owing to added charcoal end or wood sawdust or rice husk in its alms bowl body raw material, can increase the void content of saggar, thereby strengthen the ventilation property of saggar, during de-waxing, base substrate in the saggar can obtain competent oxygen, and the situation because of collection charcoal burnt hair, blackout no longer appears in base substrate, finally can improve the quality of product.Add clay in the raw material, can improve the formability and the intensity of saggar, and can reduce the saggar cost.Use silicon carbide in the raw material, be to have good heat conductivility and the good characteristics of resistance to sudden heating in view of it, not only can make saggar not easy to crack in use repeatedly, thoroughly eliminate the hidden danger that stifled stove accident takes place because of the saggar cracking, and the work-ing life that can significantly improve saggar, access times are 20 times of clay class saggar, can reach more than 80 times.And,, make that the saggar that damages can recycling, thereby eliminate the industrial refuse that discarded saggar produces because carbofrax material is more expensive.
Embodiment
Further specify the present invention below in conjunction with embodiment.
Embodiment 1: the porous silicon carbide sagger that is used for de-waxing, comprise alms bowl body with pit, the raw material of said alms bowl body is made up of charcoal end, clay and silicon carbide, each compositions in weight percentage is charcoal end 8%, clay 30%, silicon carbide 62%, its manufacture method is: elder generation mixes raw material and stirs by described proportioning, then mixed raw materials is packed into and beat or the moulding of machine pressure mode by manual in the mould with ing, at last the alms bowl body of moulding is sent in the kiln and fired, firing temperature is 1380 ± 30 ℃, and the cooling kiln discharge promptly obtains being used for the porous silicon carbide sagger of de-waxing.
Embodiment 2: the porous silicon carbide sagger that is used for de-waxing, the raw material of said alms bowl body is made up of wood sawdust or rice husk, clay and silicon carbide, each compositions in weight percentage is wood sawdust or rice husk 5%, clay 28%, silicon carbide 67%, its manufacture method is: elder generation mixes raw material and stirs by described proportioning, then mixed raw materials is packed into and beat or the moulding of machine pressure mode by manual in the mould with ing, at last the alms bowl body of moulding is sent in the kiln and fired, firing temperature is 1400 ± 30 ℃, and the cooling kiln discharge promptly obtains porous silicon carbide sagger.
Claims (2)
1, a kind of porous silicon carbide sagger that is used for de-waxing, comprise alms bowl body with pit, the raw material that it is characterized in that said alms bowl body is made up of charcoal end or wood sawdust or rice husk, clay and silicon carbide, each compositions in weight percentage is charcoal end or wood sawdust or rice husk 5%-10%, clay 20%-30%, silicon carbide 60%-75% is through batching, moulding, fire and form.
2, a kind of manufacture method that is used for the porous silicon carbide sagger of de-waxing according to claim 1, it is characterized in that earlier raw material being mixed by the described proportioning of claim 1 and stirring, then mixed raw materials is packed into and beat or the moulding of machine pressure mode by manual in the mould with ing, at last the alms bowl body of moulding is sent in the kiln and fired, firing temperature is 1350 ℃-1450 ℃, and the cooling kiln discharge promptly obtains being used for the porous silicon carbide sagger of de-waxing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810236853XA CN101434487A (en) | 2008-12-15 | 2008-12-15 | Porous silicon carbide sagger for dewaxing and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810236853XA CN101434487A (en) | 2008-12-15 | 2008-12-15 | Porous silicon carbide sagger for dewaxing and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101434487A true CN101434487A (en) | 2009-05-20 |
Family
ID=40709142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200810236853XA Pending CN101434487A (en) | 2008-12-15 | 2008-12-15 | Porous silicon carbide sagger for dewaxing and manufacturing method thereof |
Country Status (1)
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| CN (1) | CN101434487A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101733816B (en) * | 2009-11-27 | 2012-10-17 | 深圳市永丰源实业有限公司 | Manufacturing method of special-shaped sagger, special-shaped sagger and special-shaped ceramics |
| CN104341157A (en) * | 2013-07-25 | 2015-02-11 | 牛继伟 | Large Zibo kiln ceramic ware sintering technology |
| CN108484188A (en) * | 2018-05-07 | 2018-09-04 | 武汉科技大学 | A kind of silicon carbide sagger and preparation method thereof for anode material of lithium battery roasting |
-
2008
- 2008-12-15 CN CNA200810236853XA patent/CN101434487A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101733816B (en) * | 2009-11-27 | 2012-10-17 | 深圳市永丰源实业有限公司 | Manufacturing method of special-shaped sagger, special-shaped sagger and special-shaped ceramics |
| CN104341157A (en) * | 2013-07-25 | 2015-02-11 | 牛继伟 | Large Zibo kiln ceramic ware sintering technology |
| CN108484188A (en) * | 2018-05-07 | 2018-09-04 | 武汉科技大学 | A kind of silicon carbide sagger and preparation method thereof for anode material of lithium battery roasting |
| CN108484188B (en) * | 2018-05-07 | 2021-04-16 | 武汉科技大学 | Silicon carbide sagger for roasting lithium battery anode material and preparation method thereof |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Open date: 20090520 |