CN116239390A - Preparation process method of refractory brick crucible of 25kg vacuum induction furnace - Google Patents
Preparation process method of refractory brick crucible of 25kg vacuum induction furnace Download PDFInfo
- Publication number
- CN116239390A CN116239390A CN202310059924.8A CN202310059924A CN116239390A CN 116239390 A CN116239390 A CN 116239390A CN 202310059924 A CN202310059924 A CN 202310059924A CN 116239390 A CN116239390 A CN 116239390A
- Authority
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- China
- Prior art keywords
- crucible
- refractory brick
- vacuum induction
- refractory
- induction furnace
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- 239000011449 brick Substances 0.000 title claims abstract description 51
- 230000006698 induction Effects 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 9
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 15
- 239000011819 refractory material Substances 0.000 claims abstract description 3
- 239000010425 asbestos Substances 0.000 claims description 14
- 229910052895 riebeckite Inorganic materials 0.000 claims description 14
- 239000004744 fabric Substances 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 239000002893 slag Substances 0.000 claims description 4
- 235000019353 potassium silicate Nutrition 0.000 claims description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 3
- 230000003628 erosive effect Effects 0.000 claims description 2
- 239000001095 magnesium carbonate Substances 0.000 claims description 2
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 claims description 2
- 229910000021 magnesium carbonate Inorganic materials 0.000 claims description 2
- 235000014380 magnesium carbonate Nutrition 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 2
- 238000009628 steelmaking Methods 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 2
- RWDBMHZWXLUGIB-UHFFFAOYSA-N [C].[Mg] Chemical compound [C].[Mg] RWDBMHZWXLUGIB-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/03—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite
- C04B35/04—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite based on magnesium oxide
- C04B35/043—Refractories from grain sized mixtures
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Crucibles And Fluidized-Bed Furnaces (AREA)
Abstract
The invention discloses a preparation process method of a refractory brick crucible of a 25kg vacuum induction furnace, wherein the inner diameter of a 25kg vacuum induction coil and the outer diameter of a refractory brick are in a proportion of 22:17, the height of the crucible and the height of the refractory brick are in a proportion of 5:4, the wall thickness of the refractory brick is 15-20mm, the bottom thickness is 30mm, the upper opening of the refractory brick is provided with a chamfer, and the manufactured refractory brick is used as a main refractory material of the crucible. The invention aims to provide a preparation process method of a refractory brick crucible of a 25kg vacuum induction furnace, provides a novel material as a main body, fills a small amount of magnesia, and solves the technical problems of high inclusion content, short service life and the like in steelmaking of the 25kg vacuum induction furnace.
Description
Technical Field
The invention relates to the field of experimental equipment, in particular to a preparation process method of a refractory brick crucible of a 25kg vacuum induction furnace.
Background
In recent years, a crucible made of magnesia is always used in a 25kg vacuum induction furnace, the service life is limited, the slag invasion resistance is weak, and the crucible is improved in service life and reduced in production cost and labor intensity in order to meet the requirements of new steel grade development and reduce the content of inclusions in steel. The magnesium-carbon refractory brick is selected as a furnace lining of a 25kg vacuum smelting furnace, so that 25kg vacuum smelting is realized.
Disclosure of Invention
The invention aims to provide a preparation process method of a refractory brick crucible of a 25kg vacuum induction furnace, provides a novel material as a main body, fills a small amount of magnesia, and solves the technical problems of high inclusion content, short service life and the like in steelmaking of the 25kg vacuum induction furnace.
In order to solve the technical problems, the invention adopts the following technical scheme:
according to the preparation process method of the refractory brick crucible of the 25kg vacuum induction furnace, the inner diameter of the 25kg vacuum induction coil and the outer diameter of the refractory brick are in a ratio of 22:17, the height of the crucible and the height of the refractory brick are in a ratio of 5:4, the wall thickness of the refractory brick is 15-20mm, the bottom thickness is 30mm, the upper opening of the refractory brick is provided with a chamfer, and the manufactured refractory brick is used as a main refractory material of the crucible.
Further, the bottom layer of the crucible is the same as the traditional crucible by tamping, and the bottom of the crucible is made of asbestos plate, asbestos cloth and magnesia and is tamped.
Further, the asbestos plate is 30mm thick.
Further, magnesia with granularity of 0-1mm and magnesia with granularity of 1-3mm are selected and mixed according to a ratio of 1:1, and the furnace bottom thickness is 50-60mm for tamping; asbestos cloth is used outside the coil, refractory bricks are placed in the induction coil in the middle, and magnesite filled between the refractory bricks and the asbestos cloth is thick: 30mm.
Further, the upper opening of the crucible is tamped by magnesia containing water glass, so that the purpose of fixing refractory bricks is achieved.
Furthermore, the lining of the crucible by using the refractory bricks has the advantages of high strength, good thermal stability, strong slag erosion resistance, long service life and simple manufacture.
Compared with the prior art, the invention has the beneficial technical effects that:
the invention can improve the service life of the small furnace, reduce the content of inclusions in steel and improve the experimental efficiency.
Drawings
The invention is further described with reference to the following description of the drawings.
Fig. 1: a crucible coil size meter;
fig. 2: and (5) a refractory brick size table.
Detailed Description
In order that the above aspects, features and advantages of the invention will be more readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof.
A preparation process method of a refractory brick crucible of a 25kg vacuum induction furnace comprises the following steps: according to the design of the inner diameter of the induction coil and the outer diameter of the refractory brick according to the design of 22:17, the height of the crucible and the height of the refractory brick according to the design of 5:4, the detailed dimensions of the crucible and the refractory brick are shown in the table 1 and the table 2, the wall thickness of the refractory brick is 15-20mm, the bottom thickness is 30mm, and the upper opening of the refractory brick is provided with a chamfer to manufacture a refractory brick model. The bottom layer of the crucible is the same as the traditional crucible by tamping, the bottom of the crucible adopts an asbestos plate (thickness is 30 mm), asbestos cloth and magnesia (magnesia with granularity of 0-1mm and 1-3mm is selected to be mixed according to 1:1, the thickness of the bottom of the crucible is 50-60mm for tamping), asbestos cloth is used at the outer side of the coil, refractory bricks are placed in the induction coil in the middle, magnesia (thickness is 30 mm) filled between the refractory bricks and the asbestos cloth is tamped, the upper opening of the crucible is tamped by magnesia with water glass, and the purpose of fixing the refractory bricks is achieved.
Table 1 crucible coil sizing gauge
| Crucible height/mm | Coil outer diameter/ |
| 350 | 220 |
TABLE 2 refractory brick size Meter
The service life of the modified refractory brick crucible is prolonged to more than 150 furnaces from the original 50 furnaces, and meanwhile, the slag resistance of the crucible is obviously improved, so that the crucible is safer and more reliable to use.
The above embodiments are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (6)
1. A preparation process method of a refractory brick crucible of a 25kg vacuum induction furnace is characterized by comprising the following steps of: the inner diameter of the 25kg vacuum induction coil and the outer diameter of the refractory brick are in a ratio of 22:17, the height of the crucible and the height of the refractory brick are in a ratio of 5:4, the wall thickness of the refractory brick is 15-20mm, the bottom thickness of the refractory brick is 30mm, the upper opening of the refractory brick is provided with a chamfer, and the manufactured refractory brick is used as a main refractory material of the crucible.
2. The process for preparing a refractory brick crucible for a vacuum induction furnace of 25kg according to claim 1, wherein: the bottom layer of the crucible is the same as the traditional crucible by tamping, and the bottom of the crucible is made of asbestos plate, asbestos cloth and magnesia by tamping.
3. The process for preparing a refractory brick crucible for a vacuum induction furnace of 25kg according to claim 1, wherein: the asbestos plate has a thickness of 30mm.
4. The process for preparing a refractory brick crucible for a vacuum induction furnace of 25kg according to claim 2, wherein: mixing magnesia with granularity of 0-1mm and magnesia with granularity of 1-3mm according to a ratio of 1:1, and tamping the mixture to the thickness of the furnace bottom of 50-60 mm; asbestos cloth is used outside the coil, refractory bricks are placed in the induction coil in the middle, and magnesite filled between the refractory bricks and the asbestos cloth is thick: 30mm.
5. The process for preparing a refractory brick crucible for a vacuum induction furnace of 25kg according to claim 1, wherein: the upper opening of the crucible is tamped by magnesia containing water glass, thereby achieving the purpose of fixing refractory bricks.
6. The process for preparing a refractory brick crucible for a vacuum induction furnace of 25kg according to claim 1, wherein: the lining of the crucible using the refractory bricks has the advantages of high strength, good thermal stability, strong slag erosion resistance, long service life and simple manufacture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310059924.8A CN116239390A (en) | 2023-01-17 | 2023-01-17 | Preparation process method of refractory brick crucible of 25kg vacuum induction furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310059924.8A CN116239390A (en) | 2023-01-17 | 2023-01-17 | Preparation process method of refractory brick crucible of 25kg vacuum induction furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116239390A true CN116239390A (en) | 2023-06-09 |
Family
ID=86634336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310059924.8A Pending CN116239390A (en) | 2023-01-17 | 2023-01-17 | Preparation process method of refractory brick crucible of 25kg vacuum induction furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116239390A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1421648A (en) * | 1973-10-24 | 1976-01-21 | Electricity Council | Induction furnaces for metal heating or melting |
| CN101321696A (en) * | 2005-12-06 | 2008-12-10 | 新日铁高新材料株式会社 | Apparatus and process for producing high-purity silicon |
| CN103791718A (en) * | 2012-10-29 | 2014-05-14 | 东莞市长安东阳光铝业研发有限公司 | Graphite crucible knotting and fixing method for vacuum induction melting furnace |
| CN208059590U (en) * | 2018-03-29 | 2018-11-06 | 唐竹胜 | It is a kind of can continuous operations induction furnace apparatus |
| CN111023806A (en) * | 2019-11-25 | 2020-04-17 | 包头钢铁（集团）有限责任公司 | Preparation method of crucible for 25kg vacuum induction furnace |
| CN113606941A (en) * | 2021-08-06 | 2021-11-05 | 江苏隆达超合金航材有限公司 | Brick crucible for vacuum induction furnace and preparation method thereof |
| CN115388652A (en) * | 2022-07-30 | 2022-11-25 | 西安诺博尔稀贵金属材料股份有限公司 | Crucible assembly for induction furnace and preparation method thereof |
-
2023
- 2023-01-17 CN CN202310059924.8A patent/CN116239390A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1421648A (en) * | 1973-10-24 | 1976-01-21 | Electricity Council | Induction furnaces for metal heating or melting |
| CN101321696A (en) * | 2005-12-06 | 2008-12-10 | 新日铁高新材料株式会社 | Apparatus and process for producing high-purity silicon |
| CN103791718A (en) * | 2012-10-29 | 2014-05-14 | 东莞市长安东阳光铝业研发有限公司 | Graphite crucible knotting and fixing method for vacuum induction melting furnace |
| CN208059590U (en) * | 2018-03-29 | 2018-11-06 | 唐竹胜 | It is a kind of can continuous operations induction furnace apparatus |
| CN111023806A (en) * | 2019-11-25 | 2020-04-17 | 包头钢铁（集团）有限责任公司 | Preparation method of crucible for 25kg vacuum induction furnace |
| CN113606941A (en) * | 2021-08-06 | 2021-11-05 | 江苏隆达超合金航材有限公司 | Brick crucible for vacuum induction furnace and preparation method thereof |
| CN115388652A (en) * | 2022-07-30 | 2022-11-25 | 西安诺博尔稀贵金属材料股份有限公司 | Crucible assembly for induction furnace and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 刘腾轼;杨弋涛;: "25kg级中频感应炉熔炼低合金铸钢工艺", 铸造技术, no. 07 * |
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