CN211035983U - Device for smelting low-nitrogen steel grade in electric arc furnace - Google Patents
Device for smelting low-nitrogen steel grade in electric arc furnace Download PDFInfo
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- CN211035983U CN211035983U CN201921641799.7U CN201921641799U CN211035983U CN 211035983 U CN211035983 U CN 211035983U CN 201921641799 U CN201921641799 U CN 201921641799U CN 211035983 U CN211035983 U CN 211035983U
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- 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
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Abstract
The utility model discloses a device for smelting low-nitrogen steel by an electric arc furnace, which comprises an inert gas control valve station, an inert gas conveying loop, a pipeline insulating and isolating support, a flexible telescopic pipeline, an electrode pipeline connector, an electrode embracing ring, a conductive cross arm and a hollow electrode; the electrode clamping ring is arranged at one end of the conductive cross arm, the electrode clamping ring clamps the hollow electrode, the pipeline insulation isolation support is arranged on the conductive cross arm, the inert gas conveying loop is placed on the pipeline insulation isolation support, one end of the inert gas conveying loop is communicated with the inert gas control valve station, the other end of the inert gas conveying loop is communicated with the flexible telescopic pipeline, and the flexible telescopic pipeline is communicated with the hollow electrode through an electrode pipeline connector. The utility model discloses the molten steel that has avoided high temperature electric arc dissociation air to lead to increases the phenomenon of nitrogen.
Description
Technical Field
The utility model belongs to novel process equipment of low nitrogen steel grade is smelted to electric arc furnace, specifically, the utility model relates to a production process unit of low nitrogen steel grade is smelted to electric arc furnace.
Background
because of the smelting characteristics of an electric arc furnace and an L F ladle refining furnace, electric energy needs to be transmitted by ultrahigh power electrode discharge in the smelting process, molten steel in an electric arc action area cannot be effectively covered by slag due to the impact power action of electric arc, and peripheral air is dissociated by strong electric arc, so that the molten steel is combined with nitrogen in ionized air, and serious nitrogen increase is caused to the molten steel.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a production process units of low nitrogen steel grade is smelted to one set of electric arc furnace to through the various insulation protection measures of gas circuit conveyor and heavy current device, realize safe, low-cost reliable operation, automated control can be realized completely to the break-make of inertia argon gas is carried.
In order to achieve the above purpose, the utility model adopts the following technical proposal:
A device for smelting low-nitrogen steel by an electric arc furnace comprises an inert gas control valve station, an inert gas conveying loop, a pipeline insulating and isolating support, a flexible telescopic pipeline, an electrode pipeline connector, an electrode clamping ring, a conductive cross arm and a hollow electrode;
The electrode clamping ring is arranged at one end of the conductive cross arm, the electrode clamping ring clamps the hollow electrode, the pipeline insulation isolation support is arranged on the conductive cross arm, the inert gas conveying loop is placed on the pipeline insulation isolation support, one end of the inert gas conveying loop is communicated with the inert gas control valve station, the other end of the inert gas conveying loop is communicated with the flexible telescopic pipeline, and the flexible telescopic pipeline is communicated with the hollow electrode through an electrode pipeline connector.
Preferably, the inert gas is argon.
Preferably, the hollow electrode is an ultrahigh power hollow electrode or a high power hollow electrode.
The utility model discloses a this set of gas control circuit realizes the continuous transportation function of inert argon toward the electric arc region. Controlling argon pressure and input flow, and establishing the argon on-off linkage relation in the smelting process.
The utility model discloses an insulating and follow-up flexible of pipeline material of flexible communicating pipe is flexible, and electrode pipeline connector has and prevents leaking sealing device and not magnetic conduction.
The utility model has the advantages that:
1. when an electrode of an electric arc furnace or an L F ladle refining furnace is commanded to start and descend for smelting, a control valve of an argon valve station is commanded to open, and inert argon is input according to a flow model through the opening proportion of an adjusting valve.
2. The heavy current device and the conveying pipeline are connected in parallel for operation. Because the argon conveying pipeline runs in a high-current and high-intensity magnetic field area, in order to obtain safe and reliable running effects, the insulation of the device needs to have sufficient redundancy, and the hard pipeline needs to be made of non-magnetic materials.
3. A flexible hose. The electrode length needs to be adjusted intermittently along with the smelting process, and the flexible hose stretches and retracts in a follow-up mode to adapt to the appropriate length, so that the gas transmission amount is not influenced, and the service life of a pipeline is not influenced.
4. And finishing smelting. When the smelting is finished, the device is powered off, and the argon control valve is closed in a delayed mode along with the transmission of the electrode lifting signal, so that the liquid level of the molten steel is fully protected.
Low nitrogen production technology set up and be applied to electric arc furnace steelmaking and L F ladle refining furnace device, the device can effectively solve because of smelting the molten steel that electric arc leads to the air dissociation and increase nitrogen, and show and reduce electrode consumption, effectively improve the hit rate of electric arc furnace device production low nitrogen steel grade, through the hollow electrode of super high power, get through inertia argon conveying channel, realize the continuous injection of inert argon in the smelting process, diffuse inertia argon covers on exposed molten steel liquid level, keep apart the air of electric arc effect within range, thereby the molten steel that has avoided high temperature electric arc dissociation air to lead to increases nitrogen's phenomenon.
Drawings
FIG. 1 is a structural composition of a device for smelting low-nitrogen steel grade in an electric arc furnace;
Reference numerals: 1-an inert gas control valve station; 2-an inert gas delivery circuit; 3-pipeline insulation isolation support; 4-flexible and telescopic pipelines; 5-electrode line connectors; 6-electrode looping; 7-a conductive cross arm; 8-high power hollow electrodes; 9-inert argon flow; 10-liquid level.
Detailed Description
Any feature disclosed in this specification may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. Unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features. The description is only for the purpose of aiding understanding of the present invention and should not be taken as a specific limitation of the present invention.
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Example 1
As shown in fig. 1, the device for smelting low-nitrogen steel in the electric arc furnace comprises an inert gas control valve station 1, an inert gas conveying loop 2, a pipeline insulating and isolating support 3, a flexible telescopic pipeline 4, an electrode pipeline connector 5, an electrode clamping ring 6, a conductive cross arm 7 and a hollow electrode 8;
The electrode clamping ring is arranged at one end of the conductive cross arm 7, the electrode clamping ring 6 clamps the hollow electrode 8, the pipeline insulation isolation support 3 is arranged on the conductive cross arm 7, the inert gas conveying loop 2 is placed on the pipeline insulation isolation support 3, one end of the inert gas conveying loop 2 is communicated with the inert gas control valve station 1, the other end of the inert gas conveying loop is communicated with the flexible telescopic pipeline 4, and the flexible telescopic pipeline 4 is communicated with the hollow electrode 8 through the electrode pipeline connector 5.
The inert gas is argon.
The hollow electrode 8 is an ultrahigh power hollow electrode.
The utility model discloses a production process device, the hollow electrode of super high power realizes that inert argon gas carries to the regional core component of electric arc, when obtaining corresponding instruction along with argon gas control valve station, in the hollow electrode decline in-process of super high power, inert argon gas air current 9 arrives electric arc region (nearly liquid level 10 of smelting the molten steel) along conveying line, drive away the air that this position is pervasive, drive away this region with most nitrogen gas thereupon, the environment destruction that increases nitrogen with air ionization, thereby realize the atmosphere of protecting of electric stove steel production low-nitrogen steel grade.
Conventional technical knowledge in the field can be adopted in the content which is not described in detail in the present invention.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and are not limited. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art will understand that modifications and equivalent substitutions can be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and all of them shall fall within the scope of the claims of the present invention.
Claims (3)
1. The device for smelting the low-nitrogen steel grade in the electric arc furnace is characterized by comprising an inert gas control valve station (1), an inert gas conveying loop (2), a pipeline insulating and isolating support (3), a flexible telescopic pipeline (4), an electrode pipeline connector (5), an electrode embracing ring (6), a conductive cross arm (7) and a hollow electrode (8);
Conductive xarm (7) one end sets up electrode embracing ring (6), electrode embracing ring (6) centre gripping hollow electrode (8), pipeline insulation isolation support (3) set up on conductive xarm (7), place inert gas conveying loop (2) on pipeline insulation isolation support (3), the one end and the inert gas control valve station (1) intercommunication of inert gas conveying loop (2), the other end and flexible scalable pipeline (4) intercommunication, flexible scalable pipeline (4) communicate in hollow electrode (8) through electrode pipeline connector (5).
2. The apparatus of claim 1, wherein the inert gas is argon.
3. The apparatus for electric arc furnace smelting of low nitrogen grade steel according to claim 1, characterized in that the hollow electrode (8) is an ultra high power hollow electrode or a high power hollow electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921641799.7U CN211035983U (en) | 2019-09-29 | 2019-09-29 | Device for smelting low-nitrogen steel grade in electric arc furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921641799.7U CN211035983U (en) | 2019-09-29 | 2019-09-29 | Device for smelting low-nitrogen steel grade in electric arc furnace |
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| Publication Number | Publication Date |
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| CN211035983U true CN211035983U (en) | 2020-07-17 |
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| CN201921641799.7U Active CN211035983U (en) | 2019-09-29 | 2019-09-29 | Device for smelting low-nitrogen steel grade in electric arc furnace |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110551872A (en) * | 2019-09-29 | 2019-12-10 | 山东钢铁股份有限公司 | device for smelting low-nitrogen steel grade in electric arc furnace |
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2019
- 2019-09-29 CN CN201921641799.7U patent/CN211035983U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110551872A (en) * | 2019-09-29 | 2019-12-10 | 山东钢铁股份有限公司 | device for smelting low-nitrogen steel grade in electric arc furnace |
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