CN103014244B - Induction melting vacuum degassing device - Google Patents
Induction melting vacuum degassing device Download PDFInfo
- Publication number
- CN103014244B CN103014244B CN201210585596.7A CN201210585596A CN103014244B CN 103014244 B CN103014244 B CN 103014244B CN 201210585596 A CN201210585596 A CN 201210585596A CN 103014244 B CN103014244 B CN 103014244B
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- Prior art keywords
- furnace
- induction
- bell
- induction furnace
- vacuum
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- 230000006698 induction Effects 0.000 title claims abstract description 64
- 238000002844 melting Methods 0.000 title claims abstract description 30
- 230000008018 melting Effects 0.000 title claims abstract description 30
- 238000009849 vacuum degassing Methods 0.000 title abstract description 4
- 238000009413 insulation Methods 0.000 claims abstract description 14
- 238000001816 cooling Methods 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims abstract description 5
- 239000003990 capacitor Substances 0.000 claims description 9
- 230000001681 protective effect Effects 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000007654 immersion Methods 0.000 claims description 3
- 125000006850 spacer group Chemical group 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 abstract description 19
- 239000010959 steel Substances 0.000 abstract description 19
- 238000003723 Smelting Methods 0.000 abstract 1
- 238000007670 refining Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910001338 liquidmetal Inorganic materials 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910000760 Hardened steel Inorganic materials 0.000 description 2
- 238000005275 alloying Methods 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 229910000915 Free machining steel Inorganic materials 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000006356 dehydrogenation reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Classifications
-
- 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
Abstract
The invention discloses an induction melting vacuum degassing device which comprises an induction furnace, a VIP power supply, an automatic furnace cover moving device, an upper feeding mechanism, a vacuum system, an oil pool filter and a heat insulation pouring hopper, wherein the induction furnace comprises a furnace shell, a furnace cover and an induction coil, a cavity with a water-cooling space bush is arranged in the furnace shell, a sealing flange is arranged at the top of the furnace shell, the sealing flange of the furnace shell and the furnace cover form a totally-enclosed vacuum chamber; the insulation coil is arranged in the furnace shell; the VIP power supply is connected with the insulation coil; the automatic furnace cover moving device is respectively connected with the furnace cover and the upper feeding mechanism; the vacuum system is connected with an isolating valve and the furnace cover through a pipeline; the oil pool filter is arranged on a pipeline which is arranged between the induction furnace and the vacuum system; and the heat insulation pouring hopple is arranged on one side of the induction furnace. The induction melting vacuum degassing device is capable of efficiently smelting refined steel, and has the advantages of small investment, small occupation area, flexibility in operation and increased capacity.
Description
Technical field
The present invention relates to a kind of induction melting vacuum deaerator plant.
Background technology
Along with economic development, technology is constantly reformed, and the demand of these refining steels such as all trades and professions effects on surface hardened steel, hardened steel and tempered steel, cold heading steel, spring steel and free-cutting steel increases day by day.Secondary refining is the critical process that determines iron and steel performance, and secondary refining is a kind of method of further refining in ladle or special container that the molten steel just being refined by steel melting furnace is poured into, Direct Steel Process is become to two-step steelmaking process.External refining can complete following task: (1) reduces sulphur, oxygen, hydrogen, nitrogen and the non-metallic inclusion content in steel, changes inclusion morphology, to improve the purity of steel, improves the mechanical property of steel; Dark decarburization, drops to utmost point low levels carbon under given conditions, meets the requirement of low-carbon (LC) and ultra low-carbon steel; (3) fine setting alloying constituent, in very narrow scope, and is evenly distributed it Composition Control, falls low alloy-consumption, improves alloying element recovery rate; (4) liquid steel temperature is adjusted in the needed scope of casting, reduced the thermograde of molten steel in bag.
In view of the demand of existing all trades and professions to refining steel, the production capacity of induction furnace in the past and operation can not adapt to the current market requirement.
Summary of the invention
The object of the invention is, in order to overcome the deficiencies in the prior art, provides a kind of induction melting vacuum deaerator plant, and it can melt out refining steel expeditiously, less investment, the advantage such as floor space is little, flexible operation;
The technical scheme that realizes above-mentioned purpose is: a kind of induction melting vacuum deaerator plant, comprise that induction furnace, VIP power supply, bell automatic mobile device, upper charging mechanism, vacuum system, oil sump strainer and insulation water hopper, wherein, described induction furnace comprises furnace shell, bell and ruhmkorff coil, described furnace shell is the cavity that is provided with water-cooled spacer, the top of described furnace shell arranges a tongued and grooved flanges, one sealing-ring is also set on sealing flange, makes to form totally enclosed vacuum chamber between the tongued and grooved flanges of described furnace shell and bell; Described ruhmkorff coil is placed in described furnace shell; Described VIP power supply is located at one side of described induction furnace and is connected with described ruhmkorff coil; Described bell automatic mobile device is connected with described bell and described upper charging mechanism respectively; Described vacuum system is connected with described bell by pipeline and a segregaion valve; Described oil sump strainer is arranged on the pipeline between described induction furnace and described vacuum system; One side that hopper is located at described induction furnace is watered in described insulation.
Above-mentioned induction melting vacuum deaerator plant, wherein, described equipment also comprises water-cooling system and hydraulic efficiency system.
Above-mentioned induction melting vacuum deaerator plant, wherein, described equipment also comprises two reinforced conveying belt that water respectively the corresponding setting of hopper with described induction furnace and insulation.
Above-mentioned induction melting vacuum deaerator plant, wherein, also arranges furnace tilting mechanism on described induction furnace.
Above-mentioned vacuum outgas melting equipment, is characterized in that, described vacuum system is multi-stage mechanical vacuum pump.
Above-mentioned induction melting vacuum deaerator plant, wherein, also arranges a protective sleeve outside the top of described induction furnace, this protective sleeve covers on described sealing-ring when described bell is opened.
Above-mentioned induction melting vacuum deaerator plant, wherein, described oil sump strainer is wet type oil immersion strainer.
Above-mentioned induction melting vacuum deaerator plant, wherein, described VIP power supply comprises bridge rectifier, filter unit, inversion unit, afterflow unit and resonance capacitor bank in parallel successively; One end of described ruhmkorff coil is connected with inversion unit, and the other end is connected with described resonant capacitance group.
Above-mentioned induction melting vacuum deaerator plant, wherein, described inversion unit comprises the inverter thyristor of two series connection; Described resonant capacitance group comprises the resonant capacitance of two series connection; Described bridge rectifier comprises several interconnective rectification thyristors; Described filter unit comprises filter inductance and the filter capacitor of series connection, and described filter inductance is connected between described bridge rectifier and inversion unit, and described filter capacitor is connected in parallel on described inversion unit two ends; Described afterflow unit comprises two fly-wheel diodes in parallel; One end of described ruhmkorff coil is connected between two inverter thyristors, and the other end of described ruhmkorff coil is connected between two resonant capacitances.
The technical scheme of induction melting vacuum deaerator plant of the present invention, the feature that possesses medium-frequency induction furnace and vacuum induction furnace, again can their relative merits of balance, induction melting and the degassed refining of secondary vacuum are placed in same furnace shell and are carried out, can enhance productivity, and due to the ability of dehydrogenation of vacuum degassing furnace, improved the cleanliness factor of steel and improved the surface quality of iron and steel, thereby greatly improved productivity.Compare intermediate frequency furnace, the quality product that induction melting vacuum deaerator plant of the present invention melts out significantly improves; And compare vacuum induction melting furnace, induction melting vacuum deaerator plant of the present invention has advantages of that less investment, floor space are little, flexible operation and increase production capacity.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of induction melting vacuum deaerator plant of the present invention;
Fig. 2 is the vertical view of induction melting vacuum deaerator plant of the present invention;
Fig. 3 is the schematic diagram of the VIP power supply of induction melting vacuum deaerator plant connection of the present invention.
Embodiment
In order to understand technical scheme of the present invention better, below by specific embodiment, be also elaborated by reference to the accompanying drawings:
Refer to Fig. 1; a kind of induction melting vacuum deaerator plant of the present invention; comprise induction furnace 1, VIP power supply 20, bell automatic mobile device 2, upper charging mechanism 3, protective sleeve 4, vacuum system 5, oil sump strainer 6, be incubated and water hopper 7, water-cooling system 8 and hydraulic efficiency system 9, wherein:
Induction furnace 1 comprises furnace shell, bell and ruhmkorff coil, and furnace shell is the cavity that is provided with water-cooled spacer; The top of furnace shell arranges a tongued and grooved flanges, is also provided with sealing-ring on the end face of sealing flange, makes to form totally enclosed vacuum chamber between the tongued and grooved flanges of furnace shell and bell, and ruhmkorff coil is placed in furnace shell;
The place ahead of induction furnace 1 is provided with a reinforced conveying belt 10;
Furnace tilting mechanism is also set on induction furnace 1;
VIP power supply 20 is located at one side of induction furnace 1 and is connected with the ruhmkorff coil in furnace shell;
Bell automatic mobile device 2 is connected with bell and upper charging mechanism 3 respectively; Bell automatic mobile device 2 can be opened or close bell and upper charging mechanism 3 simultaneously;
Protective sleeve 4 is connected to outside the top of induction furnace 1;
Vacuum system 5 is multi-stage mechanical vacuum pump and is connected with the bell of induction furnace 1 by pipeline and segregaion valve 50;
Oil sump strainer 6 is wet type oil immersion strainer, and this oil sump strainer 6 is arranged on the pipeline between induction furnace 1 and vacuum system 5; Oil sump strainer 6 can filter the oil gas in induction furnace 1 in the process that 5 pairs of induction furnaces 1 of vacuum system vacuumize, and to reduce the suffered pollution of vacuum system, avoids the danger of burning;
One side that hopper 7 is located at induction furnace 1 is watered in insulation, and the place ahead that hopper 7 is watered in insulation is also provided with a reinforced conveying belt 70;
Water-cooling system 8 provides cooling water source for bell, segregaion valve 50 and vacuum system 5;
Hydraulic efficiency system 9 for and bell automatic mobile device 2, furnace tilting mechanism, vacuum system 5 propulsion source is provided;
Refer to Fig. 3, VIP power supply 20 is voltage feedback series resonant circuit, and this VIP power supply 20 comprises bridge rectifier 21, filter unit 22, inversion unit 23, afterflow unit 24 and resonance capacitor bank 25 in parallel successively; Wherein, bridge rectifier 21 comprises several interconnective rectification thyristors 210; Inversion unit 23 comprises the inverter thyristor 230 of two series connection; Resonant capacitance group 25 comprises the resonant capacitance 250 of two series connection; Filter unit 22 comprises filter inductance 221 and the filter capacitor 222 of series connection, and described filter inductance 221 is connected between bridge rectifier 21 and inversion unit 23, and filter capacitor 22 is connected in parallel on inversion unit 23 two ends; Afterflow unit 24 comprises two fly-wheel diodes in parallel 240; One end of ruhmkorff coil 11 is connected between two inverter thyristors 230, and the other end is connected between two resonant capacitances 250, thereby effectively reduces harmonic content.
From foregoing circuit structure, the exchange current that VIP power supply 20 output is applicable to the frequency that melting technology requires is to the ruhmkorff coil 11 in furnace shell, this exchange current, at the interior generation alternating magnetic field of ruhmkorff coil 11, can be realized efficient melting rate, and the best that can realize again liquid metal stirs; Reasonably stirring frequency had both guaranteed alloy mixing uniformity, also the liquid metal that has guaranteed rolling can be degassed fully, degasification process and strengthen ground reaction between carbon and oxygen help is removed to deleteriously gaseous constituent, so hydrogen, nitrogen, oxygen level are more much lower than content in the metal melting out under atmosphere.
The principle of work of induction melting vacuum deaerator plant of the present invention is: first under atmospheric environment, carry out the just refining stage, under atmospheric environment, induction furnace first melts solid metal, until solid metal is all fused into liquid metal, carry out again refining stage, start vacuum system, induction furnace is vacuumized and is filled with rare gas element simultaneously, make the liquid metal in induction furnace degassed to carrying out under vacuum; After degassed completing, bell automatic mobile device 2 protective sleeve when removing bell covers on the sealing-ring on the tongued and grooved flanges of furnace shell, can effectively protect the sealing-ring under high temperature, thereby guarantee reliability and the work-ing life of sealing-ring; Then induction furnace turndown under atmosphere, waters the molten steel insulation of tumbling in hopper 7, and insulation is watered hopper 7 and by automatic casting device, molten steel is poured in chute or ingot mould; Conventionally casting cycle completes under atmosphere, also can under protective atmosphere, cast.
Those of ordinary skill in the art will be appreciated that, above embodiment is only for the present invention is described, and be not used as limitation of the invention, as long as within the scope of connotation of the present invention, to the variation of the above embodiment, modification, all will drop within the scope of claims of the present invention.
Claims (1)
1. an induction melting vacuum deaerator plant, comprises that induction furnace, VIP power supply, bell automatic mobile device, upper charging mechanism, vacuum system, oil sump strainer and insulation water hopper, it is characterized in that,
Described induction furnace comprises furnace shell, bell and ruhmkorff coil, described furnace shell is the cavity that is provided with water-cooled spacer, the top of described furnace shell arranges a tongued and grooved flanges, and a sealing-ring is also set on sealing flange, makes to form totally enclosed vacuum chamber between the tongued and grooved flanges of described furnace shell and bell; Described ruhmkorff coil is placed in described furnace shell;
Described VIP power supply is located at one side of described induction furnace and is connected with described ruhmkorff coil;
Described bell automatic mobile device is connected with described bell and described upper charging mechanism respectively;
Described vacuum system is connected with described bell by pipeline and a segregaion valve, and this vacuum system is multi-stage mechanical vacuum pump;
Described oil sump strainer is arranged on the pipeline between described induction furnace and described vacuum system, and this oil sump strainer is wet type oil immersion strainer;
One side that hopper is located at described induction furnace is watered in described insulation,
One protective sleeve is also set outside the top of described induction furnace, and this protective sleeve covers on described sealing-ring when described bell is opened,
Furnace tilting mechanism is also set on described induction furnace;
Described VIP power supply comprises bridge rectifier, filter unit, inversion unit, afterflow unit and resonance capacitor bank in parallel successively; One end of described ruhmkorff coil is connected with inversion unit, and the other end is connected with described resonant capacitance group,
Described inversion unit comprises the inverter thyristor of two series connection; Described resonant capacitance group comprises the resonant capacitance of two series connection; Described bridge rectifier comprises several interconnective rectification thyristors; Described filter unit comprises filter inductance and the filter capacitor of series connection, and described filter inductance is connected between described bridge rectifier and inversion unit, and described filter capacitor is connected in parallel on described inversion unit two ends; Described afterflow unit comprises two fly-wheel diodes in parallel; One end of described ruhmkorff coil is connected between two inverter thyristors, and the other end of described ruhmkorff coil is connected between two resonant capacitances;
Described equipment also comprises water-cooling system and hydraulic efficiency system;
Described equipment also comprises two reinforced conveying belt that water respectively the corresponding setting of hopper with described induction furnace and insulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210585596.7A CN103014244B (en) | 2012-12-28 | 2012-12-28 | Induction melting vacuum degassing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210585596.7A CN103014244B (en) | 2012-12-28 | 2012-12-28 | Induction melting vacuum degassing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103014244A CN103014244A (en) | 2013-04-03 |
| CN103014244B true CN103014244B (en) | 2014-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210585596.7A Active CN103014244B (en) | 2012-12-28 | 2012-12-28 | Induction melting vacuum degassing device |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107043844B (en) * | 2017-04-17 | 2019-08-27 | 西安科技大学 | A kind of medium frequency induction melting furnace system and method |
| CN111765763A (en) * | 2020-06-29 | 2020-10-13 | 国工恒昌新材料沧州有限公司 | Vacuum induction smelting furnace capable of realizing quenching function |
| CN111780549A (en) * | 2020-07-07 | 2020-10-16 | 苏州振湖电炉有限公司 | Large-capacity multifunctional variable-frequency induction aluminum alloy smelting furnace |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0875369A (en) * | 1994-09-09 | 1996-03-19 | Nikko Kinzoku Kk | Vacuum melting furnace and operating method therefor |
| CN1327143A (en) * | 2000-05-30 | 2001-12-19 | 大同特殊钢株式会社 | Metal smelting equipment |
| CN201411470Y (en) * | 2009-06-09 | 2010-02-24 | 西安新达炉业工程有限责任公司 | Light-tonnage environment-friendly VOD steel ladle refining furnace |
| CN201616768U (en) * | 2010-05-13 | 2010-10-27 | 应达工业（上海）有限公司 | Intermediate-frequency power circuit |
| CN202431996U (en) * | 2011-12-28 | 2012-09-12 | 无锡应达工业有限公司 | Protection device for sealing ring of upper isolation valve of vacuum induction furnace |
| CN202492540U (en) * | 2012-02-23 | 2012-10-17 | 西安重鑫电炉设备有限公司 | Energy saving vacuum degassing (VD)/vacuum oxygen degassing (VOD) vacuum refining furnace based on full automatic mechanical pump group |
| CN203065509U (en) * | 2012-12-28 | 2013-07-17 | 无锡应达工业有限公司 | Induction smelting vacuum degassing equipment |
-
2012
- 2012-12-28 CN CN201210585596.7A patent/CN103014244B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0875369A (en) * | 1994-09-09 | 1996-03-19 | Nikko Kinzoku Kk | Vacuum melting furnace and operating method therefor |
| CN1327143A (en) * | 2000-05-30 | 2001-12-19 | 大同特殊钢株式会社 | Metal smelting equipment |
| CN201411470Y (en) * | 2009-06-09 | 2010-02-24 | 西安新达炉业工程有限责任公司 | Light-tonnage environment-friendly VOD steel ladle refining furnace |
| CN201616768U (en) * | 2010-05-13 | 2010-10-27 | 应达工业（上海）有限公司 | Intermediate-frequency power circuit |
| CN202431996U (en) * | 2011-12-28 | 2012-09-12 | 无锡应达工业有限公司 | Protection device for sealing ring of upper isolation valve of vacuum induction furnace |
| CN202492540U (en) * | 2012-02-23 | 2012-10-17 | 西安重鑫电炉设备有限公司 | Energy saving vacuum degassing (VD)/vacuum oxygen degassing (VOD) vacuum refining furnace based on full automatic mechanical pump group |
| CN203065509U (en) * | 2012-12-28 | 2013-07-17 | 无锡应达工业有限公司 | Induction smelting vacuum degassing equipment |
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| CN103014244A (en) | 2013-04-03 |
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