CN103468861B - Medium-frequency induction furnace - Google Patents
Medium-frequency induction furnace Download PDFInfo
- Publication number
- CN103468861B CN103468861B CN201310449993.6A CN201310449993A CN103468861B CN 103468861 B CN103468861 B CN 103468861B CN 201310449993 A CN201310449993 A CN 201310449993A CN 103468861 B CN103468861 B CN 103468861B
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- China
- Prior art keywords
- furnace
- ring
- medium
- frequency induction
- furnace lining
- 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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- 230000006698 induction Effects 0.000 title claims abstract description 33
- 229910052751 metal Inorganic materials 0.000 claims abstract description 16
- 239000002184 metal Substances 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 13
- 239000011449 brick Substances 0.000 claims abstract description 6
- 229910052593 corundum Inorganic materials 0.000 claims abstract description 6
- 239000010431 corundum Substances 0.000 claims abstract description 6
- 229910052596 spinel Inorganic materials 0.000 claims abstract description 6
- 239000011029 spinel Substances 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 abstract description 11
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 abstract description 10
- 229910052786 argon Inorganic materials 0.000 abstract description 5
- 238000003756 stirring Methods 0.000 abstract description 4
- 238000001816 cooling Methods 0.000 abstract 3
- 238000009413 insulation Methods 0.000 abstract 3
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 abstract 1
- 238000007664 blowing Methods 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000007670 refining Methods 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000009422 external insulation Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910001374 Invar Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The invention discloses a medium-frequency induction furnace which comprises a furnace shell, a furnace bottom and a furnace lining. The furnace bottom and the furnace lining are arranged inside the furnace shell. An induction ring is arranged on the outer wall of the furnace lining. A magnet yoke is arranged on the top of the induction ring. The furnace lining is made of aluminum-magnesium spinel materials. An air brick and a bottom leaky pipe are arranged at the bottom end of the furnace lining. A sealing ring is arranged at the upper end of the furnace lining. The sealing ring is composed of a heat insulation ring, a water-cooling ring and a metal sealing ring. The water-cooling ring and the metal sealing ring are both arranged inside the heat insulation ring. The water-cooling ring is located at the upper portion of the metal sealing ring. The heat insulation ring is made of electric fused white corundum materials. A vacuum cover is arranged at the upper portion of the sealing ring. The vacuum cover is connected with a vacuum pump. According to the medium-frequency induction furnace, vacuumization can be achieved, bottom argon blowing and stirring can also be achieved, the inner wall of the circumference of the upper portion of the furnace lining can be sealed through the sealing ring arranged at the upper portion of the furnace lining, the sealing performance of the medium-frequency induction furnace is enhanced, and therefore during the vacuumization, the vacuum degree can reach about 30KPa.
Description
Technical field
The present invention relates to a kind of medium-frequency induction furnace.
Background technology
At present, domestic and international state-of-the-art stainless steel refining metallurgical technology is AOD-VCR, it not only can save argon gas and deoxidization reducer in a large number, reduce costs >=20%, but also refining can go out the ultrapure stainless steel that common AOD method cannot produce, i.e. C+N≤0.01%, its core technology is, to carbon content≤0.10% of oxygen enrichment, Si, the molten stainless steel of Mn≤0.20% carries out 20 ~ 30KPa vacuum+Bottom Argon Stirring process, rely on the further decarburization of fixed oxygen in dissolved oxygen and slag under vacuum, simultaneously, bath temperature declines 50 ~ 70 DEG C, facts have proved, by reducing bath temperature, furnace lining service ability 30% can be improved.But, the furnace lining top of existing medium-frequency induction furnace because of material behavior sealing effectiveness poor, and exist because strong magnetic response cannot arrange the difficult problem of metal vacuum cover, innovate difficult, therefore, how this scientific and technological principle applied to that rate of heating is fast, in the medium-frequency induction furnace of homogeneous heating, realize the refining function of induction AOD-VCR, fill up the blank of induction furnace field of metallurgy, become a great problem.
Summary of the invention
The object of the invention is to for the problems referred to above, a kind of medium-frequency induction furnace is provided, to solve the fire door sealing effectiveness difference of existing medium-frequency induction furnace and to there is the problem of strong magneticinduction, thus cause the problem of the overall service ability difference of vacuumizing effect difference and medium-frequency induction furnace.
The object of the invention is to be achieved through the following technical solutions:
A kind of medium-frequency induction furnace, comprise furnace shell and be arranged at the furnace bottom in furnace shell, furnace lining, the outer wall of described furnace lining is provided with induction coil, the top of described induction coil is provided with yoke, described furnace lining is made up of aluminum-spinel material, its bottom is provided with gas permeable brick, end fistulae, and its upper end is provided with closed level, described closed level is by insulating collar, water-cooled circle, metal o-ring is formed, described water-cooled circle, metal o-ring is all arranged at insulating collar inside, and water-cooled circle is positioned at metal o-ring top, described insulating collar is made up of fused white corundum material, the top of described closed level is provided with vacuum (-tight) housing, described vacuum (-tight) housing is connected with vacuum pump.
Further, described closed level is provided with thermal baffle, described thermal baffle has breather hole, prevent in vacuum process, invar water projection and damage vacuum (-tight) housing.
Further, described metal o-ring, insulating collar, water-cooled circle are structure as a whole.
Further, described closed level is connected with vacuum (-tight) housing by tongued and grooved flanges.
Beneficial effect of the present invention is, described a kind of medium-frequency induction furnace can realize vacuumizing, Bottom Argon Stirring can be realized again, and it arranges closed level by being arranged on furnace lining top, the circumferential inner wall on furnace lining top can be closed, enhance its sealing property, thus when vacuumizing, vacuum tightness can reach about 30KPa, in addition, the aluminum-spinel material that furnace lining adopts and the fused white corundum material that closed level external insulation circle adopts are with a series of amphoteric refractory, avidity is strong, can naturally be sintered into one under the high temperature conditions, further enhancing obturation effect.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of medium-frequency induction furnace of the present invention.
In figure:
1, furnace shell; 2, furnace bottom; 3, end fistulae; 4, gas permeable brick; 5, furnace lining; 6, molten steel; 7, closed level; 8, breather hole; 9, thermal baffle; 10, vacuum (-tight) housing; 11, induction coil.
Embodiment
Technical scheme of the present invention is further illustrated by embodiment below in conjunction with accompanying drawing.
Please refer to shown in Fig. 1, Fig. 1 is the structural representation of a kind of medium-frequency induction furnace of the present invention, in the present embodiment, a kind of medium-frequency induction furnace, comprise furnace shell 1 and be arranged at the furnace bottom 2 in furnace shell 1, furnace lining 5, the outer wall of described furnace lining 5 is provided with induction coil 11, the top of described induction coil 11 is provided with yoke, described furnace lining 5 is made up of aluminum-spinel material, its bottom is provided with gas permeable brick 4, end fistulae 3, and its upper end is provided with closed level 7, described closed level 7 is by insulating collar, water-cooled circle, metal o-ring is formed, described metal o-ring, insulating collar, water-cooled circle is structure as a whole, described water-cooled circle, metal o-ring is all arranged at insulating collar inside, and water-cooled circle is positioned at metal o-ring top, described insulating collar is made up of fused white corundum material, described closed level 7 is provided with thermal baffle 9, and the top of closed level 7 is connected with vacuum (-tight) housing 10 by tongued and grooved flanges, described thermal baffle 9 has breather hole 8, described vacuum (-tight) housing 10 is connected with vacuum pump.
Induction coil 11 top of the present invention arranges yoke, make closed level 7, vacuum (-tight) housing 10 is not by the induction of strong electromagnetic, closed level 7 is arranged on the top of furnace lining 5, during refining, the liquid level of molten steel 6 can to closed level 7 place, molten steel >=50mm is goed deep in closed level 7 lower end, and the aluminum-spinel material that the fused white corundum material of closed level 7 external insulation circle employing and furnace lining 5 adopt is with a series of amphoteric refractory, avidity is strong, can naturally be sintered into one under the high temperature conditions, good airproof performance, without potential safety hazard, the setting of thermal baffle 9 can prevent in vacuum process, vacuum (-tight) housing 10 is damaged because of molten steel 6 splash, the setting of gas permeable brick 4, thus can Bottom Argon Stirring be realized, the setting of end fistulae 3, protected type rising pouring tapping can be realized, ensure that the molten steel 6 of high-purity is come out of the stove in process not polluted.
Above embodiment has just set forth ultimate principle of the present invention and characteristic; the present invention does not limit by above-described embodiment; without departing from the spirit and scope of the present invention, the present invention also has various change and change, and these changes and change all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (4)
1. a medium-frequency induction furnace, comprise furnace shell and be arranged at the furnace bottom in furnace shell, furnace lining, the outer wall of described furnace lining is provided with induction coil, it is characterized in that: the top of described induction coil is provided with yoke, described furnace lining is made up of aluminum-spinel material, its bottom is provided with gas permeable brick, end fistulae, and its upper end is provided with closed level, described closed level is by insulating collar, water-cooled circle, metal o-ring is formed, described water-cooled circle, metal o-ring is all arranged at insulating collar inside, and water-cooled circle is positioned at metal o-ring top, described insulating collar is made up of fused white corundum material, the top of described closed level is provided with vacuum (-tight) housing, described vacuum (-tight) housing is connected with vacuum pump.
2. a kind of medium-frequency induction furnace according to claim 1, is characterized in that: described closed level is provided with thermal baffle, described thermal baffle has breather hole.
3. a kind of medium-frequency induction furnace according to claim 1, is characterized in that: described metal o-ring, insulating collar, water-cooled circle are structure as a whole.
4. a kind of medium-frequency induction furnace according to claim 1, is characterized in that: described closed level is connected with vacuum (-tight) housing by tongued and grooved flanges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310449993.6A CN103468861B (en) | 2013-09-27 | 2013-09-27 | Medium-frequency induction furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310449993.6A CN103468861B (en) | 2013-09-27 | 2013-09-27 | Medium-frequency induction furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103468861A CN103468861A (en) | 2013-12-25 |
| CN103468861B true CN103468861B (en) | 2015-05-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310449993.6A Expired - Fee Related CN103468861B (en) | 2013-09-27 | 2013-09-27 | Medium-frequency induction furnace |
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| Country | Link |
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| CN (1) | CN103468861B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109158554A (en) * | 2018-10-31 | 2019-01-08 | 中国科学院金属研究所 | A kind of bottom filling purifying smelting device and smelting process |
| CN109945598B (en) * | 2019-01-17 | 2021-01-01 | 力维兴电子（深圳)有限公司 | Power transformer winding drying treatment process and equipment |
| CN111270088B (en) * | 2020-02-10 | 2023-10-13 | 中国恩菲工程技术有限公司 | System and method for continuously smelting magnesium by liquid stirring through induction heating |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3602244C1 (en) * | 1985-07-11 | 1986-12-18 | Marx GmbH & Co KG, 5860 Iserlohn | Vacuum induction furnace for the heating and treatment of metal melts |
| US5559827A (en) * | 1994-04-28 | 1996-09-24 | Nippon Mining & Metals Co., Ltd. | Vacuum melting-pressure pouring induction furnace |
| CN2244709Y (en) * | 1995-12-01 | 1997-01-08 | 冶金工业部钢铁研究总院 | Sealing protector for vacuum furnace |
| CN101818232A (en) * | 2010-05-04 | 2010-09-01 | 董玉银 | Method for producing extra-low-carbon stainless steel by vacuum induction refining |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05223464A (en) * | 1992-02-17 | 1993-08-31 | Fuji Electric Co Ltd | High frequency crucible type induction furnace having muffling device |
-
2013
- 2013-09-27 CN CN201310449993.6A patent/CN103468861B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3602244C1 (en) * | 1985-07-11 | 1986-12-18 | Marx GmbH & Co KG, 5860 Iserlohn | Vacuum induction furnace for the heating and treatment of metal melts |
| US5559827A (en) * | 1994-04-28 | 1996-09-24 | Nippon Mining & Metals Co., Ltd. | Vacuum melting-pressure pouring induction furnace |
| CN2244709Y (en) * | 1995-12-01 | 1997-01-08 | 冶金工业部钢铁研究总院 | Sealing protector for vacuum furnace |
| CN101818232A (en) * | 2010-05-04 | 2010-09-01 | 董玉银 | Method for producing extra-low-carbon stainless steel by vacuum induction refining |
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| Publication number | Publication date |
|---|---|
| CN103468861A (en) | 2013-12-25 |
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Owner name: FENG HANG Effective date: 20140808 Owner name: DONG YUYIN Free format text: FORMER OWNER: WUXI YINBIN METALLURG EQUIPMENT TECHNOLOGY CO., LTD. Effective date: 20140808 |
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Effective date of registration: 20140808 Address after: 214000, Wuxi, Jiangsu Province, Huishan District, Yan Zhen Town West Zhang street, No. 31-6-5 Applicant after: Dong Yuyin Applicant after: Feng Hang Address before: 214187 Jiangsu Province, Wuxi city Huishan District Yanqiao Street Ding TA Cun Xicheng Road No. 52 Applicant before: WUXI YINBIN METALLURG EQUIPMENT TECHNOLOGY Co.,Ltd. |
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Effective date of registration: 20150115 Address after: 214000, Wuxi, Jiangsu Province, Huishan District, Yan Zhen Town West Zhang street, No. 31-6-5 Applicant after: Dong Yuyin Address before: 214000, Wuxi, Jiangsu Province, Huishan District, Yan Zhen Town West Zhang street, No. 31-6-5 Applicant before: Dong Yuyin Applicant before: Feng Hang |
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| C14 | Grant of patent or utility model | ||
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Effective date of registration: 20161020 Address after: 214100, 111, Tong Tin Road, Xishan District, Wuxi District, Jiangsu, China Patentee after: WUXI YINGHANG METALLURGY EQUIPMENT TECHNOLOGY CO.,LTD. Address before: 214000, Wuxi, Jiangsu Province, Huishan District, Yan Zhen Town West Zhang street, No. 31-6-5 Patentee before: Dong Yuyin |
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Granted publication date: 20150506 |