CN109097526A - A kind of single mouth vacuum refining furnace and its method of refining with induction heating - Google Patents
A kind of single mouth vacuum refining furnace and its method of refining with induction heating Download PDFInfo
- Publication number
- CN109097526A CN109097526A CN201811258849.3A CN201811258849A CN109097526A CN 109097526 A CN109097526 A CN 109097526A CN 201811258849 A CN201811258849 A CN 201811258849A CN 109097526 A CN109097526 A CN 109097526A
- Authority
- CN
- China
- Prior art keywords
- vacuum
- steel container
- single mouth
- refining furnace
- induction heating
- 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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Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/52—Manufacture of steel in electric furnaces
- C21C5/5241—Manufacture of steel in electric furnaces in an inductively heated furnace
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0037—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 by injecting powdered material
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/072—Treatment with gases
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/10—Handling in a vacuum
Abstract
The present invention provides a kind of single mouth vacuum refining furnace with induction heating, belongs to apparatus for melting metal field, including melted steel container, single mouth dip pipe, vacuum chamber, is equipped with electromagnetic induction coil in melted steel container side wall, bottom blowing element or air brick is arranged in melted steel container bottom.The present invention provides electric current of intermediate frequency to induction coil by connecting cable, and current vortex is generated in furnace, and release amount of heat generates upward Lorentz force for molten steel heating in furnace, drives molten steel to move upwards and plays stirring action.Bottom blowing element is arranged in melted steel container bottom centre, and during vacuum processing, the gas volume being blown into acutely expands in uphill process because pressure drastically reduces, and promotes agitation of molten steel and degassing.Bottom Gas Stirring cooperates electromagnetic agitation, may make molten steel component in melted steel container and temperature more uniform.
Description
Technical field
The invention belongs to apparatus for melting metal technical fields, are specifically related to a kind of single mouth vacuum refining with induction heating
Furnace and its method of refining.
Background technique
Current high-quality liquid steel refining process, field trash is difficult to control and temperature drop is to seriously affect refining effect and continuous casting greatly
The problem of rhythm of production.The domestic and international most common vacuum refining mode has VD/VOD/RH etc., and single-mouth refining furnace also has many sides
Case, but there are a series of shortcomings.
The shortcoming of RH refining furnace embodies as follows: 1) double dip pipe occupied spaces are larger, and cyclic process temperature drop is big,
It is difficult to apply to 80t ladle below；2), can be by adding the oxygen blown chemical heating mode of aluminium without electric heating function, but generate
A large amount of Al2O3Molten steel can be polluted by being mingled with, and be unfavorable for the smelting of high-quality steel grade；3) dipping bore is small, limits molten steel circulation
It is promoted；Molten steel flow velocity fastly washes away seriously the resistance to material of dip pipe in molten steel cyclic process, causes dipping tube lifetime low；4) argon gas is from upper
The blowout of riser side wall, bubble rising distance is short, limits the promotion of refining effect；5) pool depth is shallow in vacuum tank, and splash is made
Often there are steel, slag dross at vacuum tank top, later period molten steel has the possibility of carburetting.
The shortcoming of VD/VOD embodies as follows: 1) without heating function, it is necessary to LF furnace duplex.The high-foaming of LF submerged arc slag
Property, cause vacuum refining process steel, slag splash serious, scarfing cinder will occupy mass production period and working condition in later period vacuum tank
It is extremely severe；It 2) is mitigation splashing effect, it is desirable that reserved 1 meter or more of the headroom of ladle needs the equipment and steel to existing steel mill
Packet carries out large-scale redevelopment.
The shortcoming of existing single-mouth refining furnace technology embodies as follows: 1) DH of early stage is true by being repeatedly lifted up and reducing
Empty room, suction nozzle or ladle are vacuum-treated, and hydraulicefficiency elevation structure is complicated；2) without electric heating function, the big side of temperature drop is solved
Formula is similar with RH.
Summary of the invention
In view of the foregoing deficiencies of prior art, the purpose of the present invention is to provide a kind of, and single mouth with induction heating is true
Empty refining furnace and its method of refining, so that the molten steel component and temperature in melted steel container are more uniform.
In order to achieve the above objectives, the present invention is achieved through the following technical solutions:
A kind of induction heating method improving vacuum refining furnace molten steel temperature provided by the invention, including melted steel container, list
Mouth dip pipe, vacuum chamber, the melted steel container side wall is interior to be equipped with electromagnetic induction coil, and bottom is arranged in the melted steel container bottom
Blow element or air brick.
Further, the melted steel container is ladle or refining furnace body.
Further, the ratio of described single mouth dipping bore and vacuum chamber internal diameter is 0.9~1:1, impregnate pipe outside diameter and
The ratio of melted steel container internal diameter is 0.8~0.9:1.
Further, the induction coil is made of water-cooled copper, aluminum pipe.
Further, the induction coil is made of conducting alloy material.
Further, it is provided with lifting top gun in the vacuum chamber, the vacuum chamber top, which is equipped with, to be attached thereto
Vacuum charging storehouse and vacuum suction pipeline.
Using the above scheme, the present invention provides electric current of intermediate frequency to induction coil by connecting cable, and electric whirlpool is generated in furnace
Stream, release amount of heat generate upward Lorentz force for molten steel heating in furnace, and drive molten steel, which moves upwards to play, to be stirred
The effect of mixing.Bottom blowing element or air brick are arranged in melted steel container bottom centre, and during vacuum processing, the gas volume being blown into exists
It is acutely expanded in uphill process because pressure drastically reduces, promotes agitation of molten steel and degassing.Bottom Gas Stirring cooperation electromagnetism stirs
It mixes, may make molten steel component in melted steel container and temperature more uniform.Multi-functional lifting top gun can carry out vacuum oxygen, spray
The operation such as powder, alloy can be added in vacuum charging storehouse on demand.
The present invention also utilizes the method for refining of above-mentioned single mouth vacuum refining furnace with induction heating, includes the following steps:
The whole electromagnetic agitation in smelting process is implemented to the molten steel in melted steel container by electromagnetic induction coil, and in the phase of vacuum processing
Between be aided with by bottom blowing element or air brick and be blown into inert gas and implement agitation of molten steel and degassing.
The beneficial effects of the present invention are: 1) after melted steel container side wall adds electromagnetic induction heater, can to molten steel into
Capable pollution-free heat temperature raising reduces the tapping temperature requirement to preceding process, is conducive to the furnace lining of process smelting furnace before protecting.This
Outside, alloy can be adjusted process to delay to the molten steel nature carbon deoxidation process of vacuum metling, is promoting the same of yield of alloy
When, reduce the production quantity that oxide is mingled with；2) bigbore single mouth dip pipe can promote molten steel circulation, and stirring gas is from Sheng
The blowout of steel container bottom centre, stroke is long, can promote the effect of de- H/N；3) single mouth dip pipe is not by containing steel capacity and size
Limitation is solidified due to mating induction heating apparatus without having to worry about the molten steel in low capacity melted steel container during processing；4)
After vacuumizing, part molten steel will ascend into vacuum chamber, avoid the serious disadvantage of VD/VOD splash.
Other advantages, target and feature of the invention will be illustrated in the following description to a certain extent, and
And to a certain extent, based on will be apparent to those skilled in the art to investigating hereafter, Huo Zheke
To be instructed from the practice of the present invention.Target of the invention and other advantages can be realized by following specification and
It obtains.
Detailed description of the invention
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention make into
The detailed description of one step, in which:
Fig. 1 is single mouth vacuum refining furnace structural schematic diagram of induction heating of the present invention；
Element numbers in attached drawing are respectively as follows: 1- lifting top gun；2- vacuum charging storehouse；3- vacuum chamber；The mono- mouth dip pipe of 4-；
5- electromagnetic induction coil；6- bottom blowing element or air brick；7- melted steel container；8 vacuum suction pipelines.
Specific embodiment
Illustrate embodiments of the present invention below by way of specific specific example, those skilled in the art can be by this specification
Other advantages and efficacy of the present invention can be easily understood for disclosed content.The present invention can also pass through in addition different specific realities
The mode of applying is embodied or practiced, the various details in this specification can also based on different viewpoints and application, without departing from
Various modifications or alterations are carried out under spirit of the invention.It should be noted that diagram provided in following embodiment is only to show
Meaning mode illustrates basic conception of the invention, and in the absence of conflict, the feature in following embodiment and embodiment can phase
Mutually combination.
As shown in Figure 1, a kind of single mouth vacuum refining furnace with induction heating that the present invention is implemented, including melted steel container 7 and
The vacuum system in portion disposed thereon.The bottom of melted steel container 7 is installed by several bottom blowing elements or air brick 6；Electromagnetic induction coil 5 buries
In in the resistance to material of melted steel container 7, single mouth dip pipe 4 is located at the lower part of vacuum chamber 3；This refining furnace is equipped with multi-functional lifting top gun
1, it can be in vacuum indoor lifting；Vacuum chamber top is connect with vacuum charging storehouse 2；Tail gas is drained by vacuum suction pipeline 8；Vacuum
Pump-line rear end connects dust pelletizing system and vacuum pump system.Melted steel container 7 can be ladle or refining furnace body.
Specifically, one end of single mouth dip pipe is connected to vacuum chamber bottom, the other end is inserted into the molten steel face in melted steel container,
Form a confined space.Vacuum chamber top connects vacuum suction pipeline, dedusting and vacuum pump, to vacuum chamber.Sheng Gang
The center line of container is overlapped with vacuum chamber center line, and the internal diameter of single mouth dip pipe and the internal diameter ratio of vacuum chamber are 0.9~1:1,
The outer diameter of dip pipe and the internal diameter ratio of melted steel container are 0.8~0.9:1.Melted steel container side wall is equipped with induction heating apparatus,
Several gassing pipes or air brick are installed by bottom centre, are circumferentially distributed.Electromagnetic induction coil 5 is by water-cooled copper, aluminum pipe or leads
Thermalloy material is made.
Using the above scheme, the present invention provides electric current of intermediate frequency to induction coil by connecting cable, and electric whirlpool is generated in furnace
Stream, release amount of heat generate upward Lorentz force for molten steel heating in furnace, and drive molten steel, which moves upwards to play, to be stirred
The effect of mixing.It is located at 7 bottom centre of melted steel container by bottom blowing element or air brick 6, is blown into inert gas.During vacuum processing,
The gas volume being blown into acutely expands in uphill process because pressure drastically reduces, and promotes agitation of molten steel and degassing.In this way, bottom
Blowing stirring cooperation electromagnetic agitation, may make molten steel component in melted steel container and temperature more uniform.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to compared with
Good embodiment describes the invention in detail, those skilled in the art should understand that, it can be to skill of the invention
Art scheme is modified or replaced equivalently, and without departing from the objective and range of the technical program, should all be covered in the present invention
Scope of the claims in.
Claims (7)
1. a kind of single mouth vacuum refining furnace with induction heating, including melted steel container (7), single mouth dip pipe (4), vacuum chamber (3),
It is characterized in that, being equipped with electromagnetic induction coil (5) in the melted steel container side wall, bottom blowing is arranged in the melted steel container bottom
Element or air brick (6).
2. single mouth vacuum refining furnace according to claim 1 with induction heating, which is characterized in that the melted steel container
For ladle or refining furnace body.
3. single mouth vacuum refining furnace according to claim 1 with induction heating, which is characterized in that single mouth dipping
The ratio of bore and vacuum chamber internal diameter is 0.9~1:1, and the ratio for impregnating pipe outside diameter and melted steel container internal diameter is 0.8~0.9:
1。
4. single mouth vacuum refining furnace according to claim 1 with induction heating, which is characterized in that the induction coil
It is made of water-cooled copper, aluminum pipe.
5. single mouth vacuum refining furnace according to claim 1 with induction heating, which is characterized in that the induction coil
It is made of conducting alloy material.
6. single mouth vacuum refining furnace according to claim 1 with induction heating, which is characterized in that in the vacuum chamber
It is inside provided with lifting top gun (1), the vacuum chamber top is equipped with the vacuum charging storehouse (2) being attached thereto and vacuum suction pipeline
(8)。
7. using the method for refining of single mouth vacuum refining furnace described in any one of claims 1-6 with induction heating, feature
It is, the whole electromagnetic agitation in smelting process is implemented to the molten steel in melted steel container by electromagnetic induction coil, and in vacuum
It is aided with during processing by bottom blowing element or air brick and is blown into inert gas implementation agitation of molten steel and degassing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811258849.3A CN109097526A (en) | 2018-10-26 | 2018-10-26 | A kind of single mouth vacuum refining furnace and its method of refining with induction heating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811258849.3A CN109097526A (en) | 2018-10-26 | 2018-10-26 | A kind of single mouth vacuum refining furnace and its method of refining with induction heating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109097526A true CN109097526A (en) | 2018-12-28 |
Family
ID=64869697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811258849.3A Pending CN109097526A (en) | 2018-10-26 | 2018-10-26 | A kind of single mouth vacuum refining furnace and its method of refining with induction heating |
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| CN (1) | CN109097526A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111172355A (en) * | 2020-01-10 | 2020-05-19 | 中冶赛迪工程技术股份有限公司 | Induction heating single-nozzle vacuum refining furnace and clean steel smelting process |
Citations (5)
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|---|---|---|---|---|
| CN2432219Y (en) * | 2000-06-09 | 2001-05-30 | 北京科技大学 | Multifunctional multiple blowing single nozzle refining furnace |
| WO2015058660A1 (en) * | 2013-10-23 | 2015-04-30 | 马钢(集团)控股有限公司 | Single-impregnating-tube vacuum refining device and use thereof |
| CN108148948A (en) * | 2018-02-06 | 2018-06-12 | 北京科技大学 | A kind of efficient single-mouth refining furnace and special steel smelting process |
| CN108676967A (en) * | 2018-06-26 | 2018-10-19 | 仇凯 | A kind of method of refining of vacuum outgas decarburization refining furnace and steel |
| CN208995525U (en) * | 2018-10-26 | 2019-06-18 | 中冶赛迪工程技术股份有限公司 | A kind of single mouth vacuum refining furnace with induction heating |
-
2018
- 2018-10-26 CN CN201811258849.3A patent/CN109097526A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2432219Y (en) * | 2000-06-09 | 2001-05-30 | 北京科技大学 | Multifunctional multiple blowing single nozzle refining furnace |
| WO2015058660A1 (en) * | 2013-10-23 | 2015-04-30 | 马钢(集团)控股有限公司 | Single-impregnating-tube vacuum refining device and use thereof |
| CN108148948A (en) * | 2018-02-06 | 2018-06-12 | 北京科技大学 | A kind of efficient single-mouth refining furnace and special steel smelting process |
| CN108676967A (en) * | 2018-06-26 | 2018-10-19 | 仇凯 | A kind of method of refining of vacuum outgas decarburization refining furnace and steel |
| CN208995525U (en) * | 2018-10-26 | 2019-06-18 | 中冶赛迪工程技术股份有限公司 | A kind of single mouth vacuum refining furnace with induction heating |
Non-Patent Citations (1)
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|---|
| 韩至成等: "电磁冶金技术及装备500问", 冶金工业出版社, pages: 155 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111172355A (en) * | 2020-01-10 | 2020-05-19 | 中冶赛迪工程技术股份有限公司 | Induction heating single-nozzle vacuum refining furnace and clean steel smelting process |
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