CN103011823A - Ceramic crucible for galvanizing furnace and production method thereof - Google Patents
Ceramic crucible for galvanizing furnace and production method thereof Download PDFInfo
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- CN103011823A CN103011823A CN2012103839194A CN201210383919A CN103011823A CN 103011823 A CN103011823 A CN 103011823A CN 2012103839194 A CN2012103839194 A CN 2012103839194A CN 201210383919 A CN201210383919 A CN 201210383919A CN 103011823 A CN103011823 A CN 103011823A
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- crucible
- galvanizing furnace
- heater
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- ceramic crucible
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Abstract
The invention provides a ceramic crucible for a galvanizing furnace and a production method thereof, wherein the ceramic crucible is prepared by the following materials by weight percent: 75%-78% of silicon carbide sand, 12%-16% of metallic silicon powder, 0.7%-1% of clay, 3%-5% of micro powder binding agent, 0.3%-0.4% of rare metal additive, and 5%-6% of glue. According to the ceramic crucible for the galvanizing furnace, the micro powder binding agent and the additives such as rare metal (yttrium) are added into materials to improve the formability of the raw materials of a ceramic green body, and the property of the silicon nitride combined the silicon carbide material is modified to improve the thermal shock resistance and the using property of the material, so that the material has the advantages of high temperature resistance, good molten zinc corrosion resistance, long service life and the like; and the crucible is integrally formed for one time through pressing by a vibrating press, so that the uniformity of the product density is ensured and the thermal shock resistance of the product is improved.
Description
Technical field
The invention provides a kind of galvanizing furnace, especially a kind of galvanizing furnace ceramic crucible and preparation method thereof.
Background technology
The small articles galvanizing furnace mainly is to adopt producer gas external heat iron pan to process galvanized workpiece in the market.Because zinc and iron reaction are corroded, so that the work-ing life of iron pan is very short, about about 20 days; And iron can affect galvanizing quality after fusing into zinc, and the unit product zinc consumption is also very high; Simultaneously, the topsoil of producer gas is more serious, causes environmental pollution, therefore is badly in need of a kind of galvanizing furnace that can resist the erosion of zinc liquid and replaces existing iron pan galvanizing furnace.
Summary of the invention
The purpose of this invention is to provide a kind of galvanizing furnace with ceramic crucible and preparation method thereof, have good erosion resistance, quality that can the Effective Raise galvanized workpiece, reduce zinc consumption, improve product work-ing life, reduce product material consumption and cost of investment, save production cost.
In order to solve the problems of the technologies described above, technical scheme of the present invention is as follows: a kind of galvanizing furnace ceramic crucible is characterized in that: the material of described crucible is comprised of the silicon carbide sand of 75%-78%, the metallic silicon power of 12%-16%, the clay of 0.7%-1%, the micropowder bonded agent of 3%-5%, the rare metal additive of 0.3%-0.4%, the glue of 5%-6% according to weight percent.
To improvement of the technical scheme: the material of described body of heater is comprised of 76.1% silicon carbide sand, 14.5% metallic silicon power, 0.9% clay, 3.0% micropowder bonded agent, 0.3% rare metal additive, 5.2% glue according to weight percent.
To further improvement in the technical proposal: described rare metal additive is the rare metal yttrium.
The above-mentioned galvanizing furnace making method of ceramic crucible, its step is as follows:
(1) Mold Making: produce crucible die according to product design, will leave enough pattern drafts and fillet during die design, make the demoulding smooth, improve yield rate;
(2) batch mixing: utilize planetary mixer to stir in silicon carbide sand, metallic silicon power, clay, micropowder bonded agent, rare metal additive, glue, churning time is 30 minutes, the material that obtains mixing;
(3) moulding: after the set of molds that will make installs, the material that mixes is joined in the die cavity, mould is placed into fixing beginning moulding on the large-tonnage vibratory compaction pressing machine, compact density is not less than 2.55g/cm
3
(4) demoulding: deviating from the base substrate mould of forming, obtain the ceramic crucible base substrate;
(5) oven dry: base substrate is placed in the drying room, is warming up to 120 ℃ by certain heating curve, 120 ℃ are incubated 24 hours;
(6) burn till and come out of the stove: the base substrate of oven dry is packed in the large high-temperature nitriding furnace, burn till through 1430 ℃, soaking time 12 hours, the product that burns till can be installed the making galvanizing furnace.
A kind of galvanizing furnace that adopts above-mentioned crucible to make, comprise body of heater, be provided with burner hearth in the body of heater, it is characterized in that: be provided with the crucible that is made according to above-mentioned materials in the described burner hearth, the inwall of burner hearth is provided with heating unit, one side of body of heater is provided with electric control box, is provided with thermopair in the electric control box, and thermopair extend in the burner hearth of body of heater from a side of electric control box.
Improvement to above-mentioned galvanizing furnace: described body of heater adopts refractory materials to make.
Further improvement to above-mentioned galvanizing furnace: described crucible is dome-type, the crucible mouth internal diameter 〉=800mm of crucible, and crucible is dark 〉=700mm, the useful volume 〉=0.30m3 of crucible body.
Beneficial effect:
A kind of galvanizing furnace ceramic crucible of the present invention, material is through adding the additives such as micropowder bonded agent and rare metal yttrium, improved the processability of blank raw material, the silicon nitride combined silicon carbide material performance is carried out modification, improve heat-shock resistance and the use properties of material, so that advantages such as that material has is high temperature resistant, anti-Zn solution erosion, long service life; This crucible forms by the compacting of vibration press Integratively, guarantees the homogeneity of product density, has improved the heat-shock resistance of product; The galvanizing furnace that adopts crucible of the present invention to make, adopt external electric, supporting electric heating automatic control system, temperature is ℃ adjustable in room temperature-800, the crucible internal-external temperature difference is no more than 200 ℃, but automatic electric-heating control temperature, and temperature rise is more evenly accurately, use more convenient operation, can be to environment; And the profile of crucible is designed to semisphere, guarantees that crucible is stressed evenly, is conducive to prolong pot life; The crucible mouth internal diameter 〉=800mm of crucible, crucible is dark 〉=700mm, and the useful volume 〉=0.30m3 of crucible body is increased to 0.45 cubic metre with the useful volume of crucible, and molten zinc amount is brought up to 3 tons.
Description of drawings
Fig. 1 is the structural representation of galvanizing furnace.
Embodiment
Below describe the present invention in detail by specific embodiment.
Embodiment one:
A kind of galvanizing furnace ceramic crucible, the material of described crucible is comprised of 252kg silicon carbide sand, 48kg metallic silicon power, 3kg clay, the agent of 10kg micropowder bonded, 1kg rare metal yttrium, 17.2kg glue.
The described galvanizing furnace making method of ceramic crucible, its step is as follows:
(1) Mold Making: press silicon carbide special cermacis crucible 3 design and the molded crucible dies of using of making machine, will leave enough pattern drafts and fillet during die design, make the demoulding smooth, improve yield rate;
(2) batch mixing: utilize planetary mixer to stir 252kg silicon carbide sand, metallic silicon power 48kg, clay 3kg, micropowder bonded agent 10kg, rare metal yttrium 1kg, glue 17.2kg, churning time is 30 minutes;
(3) moulding: after the set of molds that will make installs, take by weighing mixed material by calculated weight, join in the die cavity, mould is placed into fixing beginning moulding on the large-tonnage vibratory compaction pressing machine, compact density is not less than 2.55g/cm
3
(4) demoulding: deviating from the base substrate mould of forming, obtain the silicon carbide crucible base substrate;
(5) oven dry: base substrate is placed in the drying room, is warming up to 120 ℃ by certain heating curve, 120 ℃ are incubated 24 hours;
(6) burn till and come out of the stove: the base substrate of oven dry is packed in the large high-temperature nitriding furnace, burn till through 1430 ℃, soaking time 12 hours, the product that burns till can be installed and make electric external heat crucible galvanizing furnace.
Embodiment two:
A kind of galvanizing furnace ceramic crucible, the material of described crucible is comprised of 248.4kg silicon carbide sand, 39.744kg metallic silicon power, 2.3kg clay, the agent of 9.9kg micropowder bonded, 0.9kg rare metal yttrium, 16.6kg glue.
The described galvanizing furnace making method of ceramic crucible, its step is as follows:
(1) Mold Making: press silicon carbide special cermacis crucible 3 design and the molded crucible dies of using of making machine, will leave enough pattern drafts and fillet during die design, make the demoulding smooth, improve yield rate;
(2) batch mixing: utilize planetary mixer to stir in 248.4kg silicon carbide sand, 39.744kg metallic silicon power, 2.3kg clay, the agent of 9.9kg micropowder bonded, 0.9kg rare metal yttrium, 16.6kg glue, churning time is 30 minutes;
(3) moulding: after the set of molds that will make installs, take by weighing mixed material by calculated weight, adopt casting, compact density is not less than 2.55g/cm
3
(4) demoulding: deviating from the base substrate mould of forming, obtain the silicon carbide crucible base substrate;
(5) oven dry: base substrate is placed in the drying room, is warming up to 120 ℃ by certain heating curve, 120 ℃ are incubated 24 hours;
(6) burn till and come out of the stove: the base substrate of oven dry is packed in the large high-temperature nitriding furnace, burn till through 1430 ℃, soaking time 12 hours, the product that burns till can be installed and make electric external heat crucible galvanizing furnace.
Manufacture method in the present embodiment two, crucible are to adopt casting, can reach equally the homogeneity that guarantees product density, improve the effect of the heat-shock resistance of product.
Adopt galvanizing furnace that the crucible in the above-mentioned specific embodiment makes as shown in Figure 1, comprise body of heater 1, body of heater 1 adopts refractory materials to make, be provided with burner hearth in the body of heater 1, be provided with crucible 3 in the described burner hearth, the inwall of burner hearth is provided with heating unit 2, and a side of body of heater 1 is provided with electric control box 5, is provided with thermopair 4 in the electric control box 5, thermopair 4 extend in the burner hearth of body of heater 1 from a side of electric control box 5, described crucible is dome-type, the crucible mouth internal diameter 〉=800mm of crucible, and crucible is dark 〉=700mm, useful volume 〉=the 0.30m3 of crucible body, the external form of crucible can change as required, and the crucible mouth-shaped can be circle, rectangle, oval other shape that waits.
Claims (7)
1. galvanizing furnace ceramic crucible, it is characterized in that: the material of described crucible is comprised of the silicon carbide sand of 75%-78%, the metallic silicon power of 12%-16%, the clay of 0.7%-1%, the micropowder bonded agent of 3%-5%, the rare metal additive of 0.3%-0.4%, the glue of 5%-6% according to weight percent.
2. a kind of galvanizing furnace ceramic crucible according to claim 1, it is characterized in that: the material of described body of heater is comprised of 76.1% silicon carbide sand, 14.5% metallic silicon power, 0.9% clay, 3.0% micropowder bonded agent, 0.3% rare metal additive, 5.2% glue according to weight percent.
3. a kind of galvanizing furnace ceramic crucible according to claim 1 and 2, it is characterized in that: described rare metal additive is the rare metal yttrium.
4. a galvanizing furnace is with the making method of ceramic crucible, and its step is as follows:
Mold Making: produce crucible die according to product design, will leave enough pattern drafts and fillet during die design, make the demoulding smooth, improve yield rate;
Batch mixing: utilize planetary mixer to stir in silicon carbide sand, metallic silicon power, clay, micropowder bonded agent, rare metal additive, glue, churning time is 30 minutes, the material that obtains mixing;
Moulding: after the set of molds that will make installs, the material that mixes is joined in the die cavity, mould is placed into fixing beginning moulding on the large-tonnage vibratory compaction pressing machine, compact density is not less than 2.55g/cm
3
The demoulding: deviating from the base substrate mould of forming, obtain the ceramic crucible base substrate;
Oven dry: base substrate is placed in the drying room, is warming up to 120 ℃ by certain heating curve, 120 ℃ are incubated 24 hours;
Burn till and come out of the stove: the base substrate of oven dry is packed in the large high-temperature nitriding furnace, burn till through 1430 ℃, soaking time 12 hours, the product that burns till can be installed the making galvanizing furnace.
5. galvanizing furnace, comprise body of heater, be provided with burner hearth in the body of heater, it is characterized in that: be provided with the crucible described in the claim 1 in the described burner hearth, the inwall of burner hearth is provided with heating unit, one side of body of heater is provided with electric control box, is provided with thermopair in the electric control box, and thermopair extend in the burner hearth of body of heater from a side of electric control box.
6. a kind of galvanizing furnace according to claim 5 is characterized in that: described body of heater adopts refractory materials to make.
7. according to claim 5 or 6 described a kind of galvanizing furnaces, it is characterized in that: described crucible is dome-type, the crucible mouth internal diameter 〉=800mm of crucible, and crucible is dark 〉=700mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012103839194A CN103011823A (en) | 2012-10-11 | 2012-10-11 | Ceramic crucible for galvanizing furnace and production method thereof |
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| CN2012103839194A CN103011823A (en) | 2012-10-11 | 2012-10-11 | Ceramic crucible for galvanizing furnace and production method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105970287A (en) * | 2016-05-23 | 2016-09-28 | 大工（青岛）新能源材料技术研究院有限公司 | Adjustable graphite crucible |
| CN107014206A (en) * | 2016-09-01 | 2017-08-04 | 咸阳蓝光热工科技有限公司 | Ceramic network formula inlays boiler tube and its forming method |
| CN117073369A (en) * | 2023-10-13 | 2023-11-17 | 四川沃耐稀新材料科技有限公司 | Sintering furnace for burning praseodymium and neodymium fluoride stock solution and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1919792A (en) * | 2006-09-04 | 2007-02-28 | 青岛大学 | Manufacture method of silicon carbide refractory ceramics material |
| CN101973773A (en) * | 2010-11-03 | 2011-02-16 | 淄博恒世科技发展有限公司 | Preparation method of large crucible with combination of silicon nitride and silicon carbide |
| CN102162038A (en) * | 2011-03-14 | 2011-08-24 | 云南罗平锌电股份有限公司 | Application of silicon carbide material in metallic zinc powder production furnace |
| CN202187050U (en) * | 2011-07-18 | 2012-04-11 | 上海中加电炉有限公司 | Improved large-scale environment-friendly hot galvanizing furnace |
-
2012
- 2012-10-11 CN CN2012103839194A patent/CN103011823A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1919792A (en) * | 2006-09-04 | 2007-02-28 | 青岛大学 | Manufacture method of silicon carbide refractory ceramics material |
| CN101973773A (en) * | 2010-11-03 | 2011-02-16 | 淄博恒世科技发展有限公司 | Preparation method of large crucible with combination of silicon nitride and silicon carbide |
| CN102162038A (en) * | 2011-03-14 | 2011-08-24 | 云南罗平锌电股份有限公司 | Application of silicon carbide material in metallic zinc powder production furnace |
| CN202187050U (en) * | 2011-07-18 | 2012-04-11 | 上海中加电炉有限公司 | Improved large-scale environment-friendly hot galvanizing furnace |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105970287A (en) * | 2016-05-23 | 2016-09-28 | 大工（青岛）新能源材料技术研究院有限公司 | Adjustable graphite crucible |
| CN107014206A (en) * | 2016-09-01 | 2017-08-04 | 咸阳蓝光热工科技有限公司 | Ceramic network formula inlays boiler tube and its forming method |
| CN107014206B (en) * | 2016-09-01 | 2019-09-24 | 咸阳蓝光热工科技有限公司 | Ceramic network formula inlays the forming method of boiler tube |
| CN117073369A (en) * | 2023-10-13 | 2023-11-17 | 四川沃耐稀新材料科技有限公司 | Sintering furnace for burning praseodymium and neodymium fluoride stock solution and control method thereof |
| CN117073369B (en) * | 2023-10-13 | 2023-12-22 | 四川沃耐稀新材料科技有限公司 | Sintering furnace for burning praseodymium and neodymium fluoride stock solution and control method thereof |
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Application publication date: 20130403 |