CN203018725U - Electro-slag liquid pouring system - Google Patents
Electro-slag liquid pouring system Download PDFInfo
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- CN203018725U CN203018725U CN 201320005120 CN201320005120U CN203018725U CN 203018725 U CN203018725 U CN 203018725U CN 201320005120 CN201320005120 CN 201320005120 CN 201320005120 U CN201320005120 U CN 201320005120U CN 203018725 U CN203018725 U CN 203018725U
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- liquid pouring
- electroslag
- vacuum chamber
- pipeline
- molten steel
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Abstract
The utility model provides an electro-slag liquid pouring system. The electro-slag liquid pouring system comprises an electro-slag liquid pouring furnace, a vacuum chamber, a steel ladle and a pipeline, wherein the vacuum chamber is fixed above the electro-slag liquid pouring furnace in a sealing manner for exposing a slag pool of the electro-slag liquid pouring furnace to the vacuum chamber; molten steel is filled in the steel ladle; the pipeline is used for guiding the molten steel in the steel ladle to the slag pool; the pipeline comprises an inlet and an outlet, wherein the inlet is inserted to the molten steel in the steel ladle; the outlet is arranged in the vacuum chamber; and the outlet of the pipeline is arranged above the slag pool. According to the electro-slag liquid pouring system provided by the utility model, the vacuum chamber is arranged on the electro-slag liquid pouring furnace and the pipeline is used for guiding the molten steel to the slag pool of the electro-slag liquid pouring system, so that the metallurgical process can be shortened and the function of removing the gas in the molten steel can be realized.
Description
Technical field
The utility model belongs to the electroslag metallurgy field, specifically, relates to and a kind ofly can shorten the liquid pouring of electroslag system that metallurgical process is realized liquid steel degassing simultaneously.
Background technology
The product of electroslag metallurgy has the advantages such as clarity is high, dense structure, homogeneous chemical composition, any surface finish.Traditional electroslag metallurgy technology adopts the batch production mode of a steel ingot of a remelting, needs preparation steel billet or continuous casting billet as consutrode.
Mi Duowaer professor and the team thereof of the Elmet-Roll in Kiev, Ukraine capital, bar electric welding research institute have researched and developed liquid pouring of electroslag method (Medovar L B the nineties in 20th century, Tsykulenko A K, the people .New Electroslag Technologies.Medovar MemorialSymposium such as Saenko V Ya, 2011:49), the method has been saved operation and the cost of electrode preparation and has been reduced the energy consumption of traditional electroslag metallurgy.This liquid pouring of electroslag method does not need to prepare consutrode, and slag bath and crystallizer form the loop by external power source, thereby makes slag bath keep predetermined temperature.In the operating process of liquid pouring of electroslag method, at the liquid metal that will treat electroslag metallurgy (for example, molten steel) pour slag bath into before, need individually the liquid towards metal deposit dress and shift and carry out the processing such as degassed, and need to prevent the measure of oxidation and pollution in this sequence of operations process, this makes the metallurgical process of liquid pouring of electroslag method long and complicated.In addition, shift, pour at ladle through the molten steel of degassed processing and easily absorb air in the process of slag bath and cause oxidation and pollution, be unfavorable for the production of steel billet.
The utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, and provides a kind of metallurgical process that can shorten simultaneously molten steel to be carried out degassed liquid pouring of electroslag system.
According to one side of the present utility model, the liquid pouring of electroslag system comprises: the liquid pouring of electroslag stove; Vacuum chamber is sealingly secured to liquid pouring of electroslag stove top and is exposed in vacuum chamber with the slag bath with the liquid pouring of electroslag stove; Ladle, molten steel is equipped with in inside; Pipeline is used for the molten steel in ladle is directed to slag bath, comprises entrance and the outlet that is positioned at vacuum chamber in the molten steel that inserts in ladle, and the outlet of pipeline is positioned at above slag bath.
According to embodiment of the present utility model, the liquid pouring of electroslag stove can comprise current-conductive mold, insulating barrier, outer crystallizer and surrounding layer, insulating barrier is arranged on current-conductive mold and limits slag bath and metal bath between outer crystallizer and together with current-conductive mold and outer crystallizer, and surrounding layer is coated to the outside of current-conductive mold, insulating barrier and outer crystallizer hermetically.The vacuum chamber bottom can be sealingly secured on surrounding layer and have the opening that exposes slag bath.
According to embodiment of the present utility model, vacuum chamber can have the steam vent that the gas in vacuum chamber is discharged.The steam vent of vacuum chamber can be connected with air extractor.
According to embodiment of the present utility model, pipeline can vertically enter vacuum chamber from the top of vacuum chamber and the liquid level of slag bath.Pipeline can be slidably connected with the top air-tightness of vacuum chamber.The liquid pouring of electroslag system can also comprise and being connected with pipeline so that the pipeline lowering or hoisting gear that pipeline moves up and down with respect to vacuum chamber.
According to embodiment of the present utility model, the liquid pouring of electroslag system can also comprise the ladle lowering or hoisting gear that ladle is moved up and down.
According to embodiment of the present utility model, vacuum chamber can also have air admission hole.
According to embodiment of the present utility model, the Bohler electroslag tapping system can also comprise the outlet that is arranged on pipeline and the crucible between slag bath, and the bottom of crucible is provided with a plurality of tappings holes.
According to embodiment of the present utility model, in slag bath, the thickness of liquid slag can be that molten steel enters more than 1.5 times of the slag bath maximum impact degree of depth.
According to embodiment of the present utility model, vacuum chamber can be provided with the cinder notch with open and close function, to be used for adding slag and/or skimming of slag bath.
System arranges vacuum chamber and by pipeline, molten steel is introduced in the slag bath of liquid pouring of electroslag stove on the liquid pouring of electroslag stove according to liquid pouring of electroslag of the present utility model, thereby can remove gas in molten steel in vacuum chamber, shortens metallurgical process.Simultaneously, can regulate rhythm of production by regulate vacuum, pipeline section is long-pending, liquid steel level is poor etc.
Description of drawings
The following description of the exemplary embodiment of carrying out in conjunction with the drawings, these and/or other aspect of the present utility model and advantage will become clear and be easier to and understand, wherein:
Fig. 1 is the schematic diagram according to the liquid pouring of electroslag system of the utility model exemplary embodiment;
Fig. 2 is the schematic diagram according to the liquid pouring of electroslag system of another exemplary embodiment of the utility model;
Fig. 3 is the cutaway view of the crucible that uses in liquid pouring of electroslag system according to another exemplary embodiment of the utility model.
The specific embodiment
Liquid pouring of electroslag of the present utility model system is take existing liquid pouring of electroslag method as the basis, by vacuum chamber being set on the liquid pouring of electroslag stove and by pipeline, the molten steel in ladle being introduced vacuum chamber and realize to inject slag bath.
Can comprise liquid pouring of electroslag stove, vacuum chamber, ladle and pipeline according to the liquid pouring of electroslag system of utility model.Vacuum chamber is exposed in vacuum chamber with the slag bath with the liquid pouring of electroslag stove above being sealingly secured to the liquid pouring of electroslag stove.Pipeline is for introducing slag bath with the molten steel in ladle, and pipeline comprises the entrance and the outlet that is positioned at vacuum chamber in the molten steel that inserts in ladle, and the outlet of pipeline is positioned at above slag bath.
according to the liquid pouring of electroslag system with said structure of the present utility model, liquid metal enters in vacuum chamber through pipeline from ladle, injects at last the slag bath of liquid pouring of electroslag stove.Therefore, saved in the prior art step of depositing before liquid metal is injected into the liquid pouring of electroslag stove, transfer and a series of anti-oxidation and pollution.Therefore, system can shorten metallurgical process according to liquid pouring of electroslag of the present utility model, can remove the gas in molten steel simultaneously in vacuum chamber.
Describe liquid pouring of electroslag of the present utility model system in detail with exemplary embodiment below with reference to accompanying drawings.In the accompanying drawings, identical label represents identical element all the time.
Fig. 1 is the schematic diagram according to the liquid pouring of electroslag system of the utility model exemplary embodiment.
With reference to Fig. 1, comprise liquid pouring of electroslag stove, vacuum chamber 21, pipeline 31 and ladle 41 according to the liquid pouring of electroslag system of the present embodiment.
The liquid pouring of electroslag stove can comprise current-conductive mold 12, insulating barrier (not shown), outer crystallizer 14 and surrounding layer 15.Insulating barrier is arranged on current-conductive mold 12 and limits slag bath 11 and metal bath 13 between outer crystallizer 14 and together with current-conductive mold 12 and outer crystallizer 14.Slag bath 11 and current-conductive mold 12 form the loop by external power source 16, thereby change the temperature of slag bath 11 and metal bath 13 by resistance heat.Outer crystallizer 14 is used for the molten steel solidification moulding.Surrounding layer 15 is coated to the outside of current-conductive mold 12, insulating barrier and outer crystallizer 14 hermetically, and surrounding layer 15 can be formed by refractory material, yet the utility model is not limited to this.
According to exemplary embodiment of the present utility model, vacuum chamber 21 can arrange steam vent 22.Like this, in operating process, steam vent 22 is connected with for example mechanical pump of outside or the air extractor of vavuum pump, thereby realizes the subnormal ambient of vacuum chamber 21.
In addition, the shape of vacuum chamber 21 is not subjected to concrete restriction, for example, can be cylindrical or cuboid.Vacuum chamber 21 can form to realize heat insulation function and sealing function by the skin of welding steel and the liner of refractory material, yet the utility model is not limited to this.
In having the liquid pouring of electroslag system of said structure, air-extraction function by mechanical pump or vavuum pump is in the interior formation negative pressure of vacuum chamber 21, thereby the molten steel in ladle 41 flows along pipeline 31 in molten steel entrance 32 places are inhaled into pipeline 31, injects in vacuum chambers 21 from molten steel outlet 33 at last.Due to the Action of Gravity Field of molten steel, the molten steel that flows out from the molten steel outlet 33 that is arranged in slag bath 11 tops is injected into slag bath 11.Drop to from molten steel outlet 33 at molten steel in the process slag bath 11, because of the subnormal ambient (high vacuum environment) in vacuum chamber 21, can promptly remove the gas in molten steel.In addition, due to the reduction of temperature in the molten steel dropping process, so in molten steel, the solubility of gas also can descend, thereby be conducive to Dehydrogenation of Molten Steel.The molten steel that enters in slag bath 11 fully contacts with liquid slag, thereby can remove the field trash in molten steel.The molten steel that passes slag bath 11 enters in metal bath 13, and metal bath 13 has the effect of buffering molten steel and follow-up casting process is carried out the molten steel feeding.Due to vacuum chamber 21 being set above the liquid pouring of electroslag stove, so the slag bath liquid level can present convex surface slightly, but this can not affect the effect of electroslag metallurgy.In addition, owing to vacuum chamber 21 being arranged on liquid pouring of electroslag stove top, so can avoid oxidation and the pollution of molten steel, make molten steel have higher degree of purity.Therefore, high cleanliness and by degassed molten steel by after outer crystallizer (for example water mold) 14, can produce high-quality Electro Slag Remelting Steel.
As seen, in having the liquid pouring of electroslag system of said structure, need not to treat individually metallurgical ladle and deposit dress and shift and carry out the processing such as degassed, therefore, can shorten according to the liquid pouring of electroslag system of the present embodiment the function that the metallurgical process while can realize removing gas in molten steel.
According to exemplary embodiment of the present utility model, as shown in Figure 1, pipeline 31 can vertically enter in vacuum chamber 21 from the top of vacuum chamber 21 and the liquid level of slag bath 11.Yet the utility model is not limited to this, and for example, pipeline 31 can enter in vacuum chamber 21 from the sidepiece of vacuum chamber 21, and bending makes molten steel outlet 33 towards slag bath 11 above slag bath 11.In addition, according to exemplary embodiment of the present utility model, in the situation that pipeline 31 vertically enters vacuum chamber from top and the slag bath 11 of vacuum chamber 21, pipeline 31 can air-tightness be slidably connected with the top of vacuum chamber 21, thereby pipeline 31 can move up and down with respect to the top of vacuum chamber to regulate the distance between molten steel outlet 33 and slag bath 11.In this case, the pipeline lowering or hoisting gear 34 that is connected with pipeline 31 can be set, pipeline lowering or hoisting gear 34 can be realized by hydraulic technique or gear structure, yet the utility model is not limited to this.
According to exemplary embodiment of the present utility model, vacuum chamber 21 can also arrange air admission hole 23.Can by air admission hole 23 to the interior inert gas injecting of vacuum chamber 21, reduce the dividing potential drop of the gas that removes in vacuum chamber 21 from steel, thereby be conducive to degassed.
According to exemplary embodiment of the present utility model, vacuum chamber 21 can also be provided for the cinder notch (not shown) that adds slag and/or skim of slag bath, and the function that cinder notch can have opening and closing is to open in use and the used time does not close.Yet, the concrete form of cinder notch with and setting position on vacuum chamber 21 be not subjected to concrete restriction.
According to exemplary embodiment of the present utility model, ladle lowering or hoisting gear 42 can be set to realize the free lifting of ladle 41 in the bottom of ladle 41, ladle lowering or hoisting gear 42 can be realized by hydraulic technique or gear structure, yet the utility model is not limited to this.
Fig. 2 is the schematic diagram according to the liquid pouring of electroslag system of another exemplary embodiment of the utility model, and Fig. 3 is the cutaway view of the crucible that uses in liquid pouring of electroslag system according to another exemplary embodiment of the utility model.
With reference to Fig. 2 and Fig. 3, also comprise according to the liquid pouring of electroslag system of the present embodiment the bowl-shape crucible 51 that is that is arranged between molten steel outlet 33 and slag bath 11, the bottom of crucible 51 is provided with a plurality of tappings hole 53.By being set, the crucible 51 with a plurality of tappings hole 53 can improve degasifying effect between molten steel outlet 33 and slag bath 11.For example, when the negligible amounts in the tapping hole 53 of crucible 51 and/or diameter hour, crucible 51 can play the effect that stores molten steel, extends the time of staying of molten steel in vacuum chamber 21, thereby improves degasifying effect; When the tapping hole of crucible 53 quantity when more, molten steel can be from different tappings holes 53 flows out, thereby increases the surface area of molten steel, increases the gas/liquid interface, improves degassing efficiency.
As shown in Figure 2, crucible can be arranged between molten steel outlet 33 and slag bath 11 by crucible holder 52.Crucible holder 52 can be formed by exotic material, and the concrete form of crucible holder 52 and modes of emplacement are not subjected to concrete restriction, and for example, crucible holder 52 1 ends can be supported on surrounding layer 15 and the other end is supported on the outer surface of crucible 51.
For liquid pouring of electroslag of the present utility model system, in actual mechanical process, the thickness of liquid slag in slag bath 11 can be arranged to molten steel and enter more than 1.5 times of the slag bath maximum impact degree of depth.Effect due to molten steel gravitional force, molten steel certainly leads to certain depth after eminence enters slag bath, if the liquid slag thickness in molten steel excessive velocities and slag bath 11 is too thin, molten steel may just arrive metal bath 13 within very short time, thereby does not reach the effect of electroslag metallurgy.Therefore, in slag bath, the thickness of liquid slag must be greater than the impact depth of molten steel, and preferably, the thickness of liquid slag is that molten steel enters more than 1.5 times of the slag bath maximum impact degree of depth.
In addition, for liquid pouring of electroslag of the present utility model system, the sectional area of pipeline 31 (in the situation that pipeline 31 is pipe, being the diameter of pipeline 31) is decided by the factors such as difference in height between vacuum, molten steel ladle surface and the molten steel outlet of vacuum chamber 21.The molten steel demand is decided by ESR ingot production efficiency, and it is the key factor of metallurgical process that pipeline 31 provides the molten steel of appropriate volume.In the ideal situation, the product of the sectional area of pipeline 31 and molten steel flow speed is the molten steel supply.According to Bernoulli equation, the factor such as molten steel flow speed and vacuum, molten steel outlet and molten steel inlet height are poor is relevant, so the long-pending factor such as difference in height that depends between vacuum, molten steel ladle surface and molten steel outlet of pipeline section.
By finding out the description according to the above embodiment of liquid pouring of electroslag of the present utility model system, by vacuum chamber being set on the liquid pouring of electroslag stove and molten steel being introduced in the slag bath of liquid pouring of electroslag stove by pipeline, can shorten metallurgical process, the function that can realize removing gas in molten steel simultaneously.
Claims (13)
1. a liquid pouring of electroslag system, is characterized in that, described liquid pouring of electroslag system comprises:
The liquid pouring of electroslag stove;
Vacuum chamber is sealingly secured to liquid pouring of electroslag stove top and is exposed in vacuum chamber with the slag bath with the liquid pouring of electroslag stove;
Ladle, molten steel is equipped with in inside;
Pipeline is used for the molten steel in ladle is directed to slag bath, comprises entrance and the outlet that is positioned at vacuum chamber in the molten steel that inserts in ladle, and the outlet of pipeline is positioned at above slag bath.
2. liquid pouring of electroslag according to claim 1 system, it is characterized in that, the liquid pouring of electroslag stove comprises current-conductive mold, insulating barrier, outer crystallizer and surrounding layer, insulating barrier is arranged on current-conductive mold and limits slag bath and metal bath between outer crystallizer and together with current-conductive mold and outer crystallizer, and surrounding layer is coated to the outside of current-conductive mold, insulating barrier and outer crystallizer hermetically.
3. liquid pouring of electroslag according to claim 2 system, is characterized in that, is fixed on surrounding layer to the vacuum chamber lower seal and has the opening that exposes slag bath.
4. liquid pouring of electroslag according to claim 1 system, is characterized in that, vacuum chamber has the steam vent that the gas in vacuum chamber is discharged.
5. liquid pouring of electroslag according to claim 4 system, is characterized in that, the steam vent of vacuum chamber is connected with air extractor.
6. liquid pouring of electroslag according to claim 1 system, is characterized in that, pipeline vertically enters vacuum chamber from the top of vacuum chamber and the liquid level of slag bath.
7. liquid pouring of electroslag according to claim 6 system, is characterized in that, the top air-tightness of pipeline and vacuum chamber is slidably connected.
8. liquid pouring of electroslag according to claim 7 system, is characterized in that, described liquid pouring of electroslag system also comprises and being connected with pipeline so that the pipeline lowering or hoisting gear that pipeline moves up and down with respect to vacuum chamber.
9. liquid pouring of electroslag according to claim 1 system, is characterized in that, described liquid pouring of electroslag system also comprises the ladle lowering or hoisting gear that ladle is moved up and down.
10. liquid pouring of electroslag according to claim 1 system, is characterized in that, vacuum chamber also has air admission hole.
11. liquid pouring of electroslag according to claim 1 system is characterized in that, described liquid pouring of electroslag system also comprises the outlet that is arranged on pipeline and the crucible between slag bath, and the bottom of crucible is provided with a plurality of tappings holes.
12. liquid pouring of electroslag according to claim 1 system is characterized in that in slag bath, the thickness of liquid slag is that molten steel enters more than 1.5 times of the slag bath maximum impact degree of depth.
13. liquid pouring of electroslag according to claim 1 system is characterized in that vacuum chamber is provided with the cinder notch with open and close function, to be used for adding slag and/or skimming of slag bath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320005120 CN203018725U (en) | 2013-01-06 | 2013-01-06 | Electro-slag liquid pouring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320005120 CN203018725U (en) | 2013-01-06 | 2013-01-06 | Electro-slag liquid pouring system |
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| Publication Number | Publication Date |
|---|---|
| CN203018725U true CN203018725U (en) | 2013-06-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320005120 Withdrawn - After Issue CN203018725U (en) | 2013-01-06 | 2013-01-06 | Electro-slag liquid pouring system |
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| CN (1) | CN203018725U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103045876A (en) * | 2013-01-06 | 2013-04-17 | 莱芜钢铁集团有限公司 | Liquid pouring system for electric slag |
| CN104907540A (en) * | 2015-06-15 | 2015-09-16 | 江苏大学 | Method for electro slag liquid state pouring continuous casting billet with molten steel flow divider |
-
2013
- 2013-01-06 CN CN 201320005120 patent/CN203018725U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103045876A (en) * | 2013-01-06 | 2013-04-17 | 莱芜钢铁集团有限公司 | Liquid pouring system for electric slag |
| CN103045876B (en) * | 2013-01-06 | 2015-01-21 | 莱芜钢铁集团有限公司 | Liquid pouring system for electric slag |
| CN104907540A (en) * | 2015-06-15 | 2015-09-16 | 江苏大学 | Method for electro slag liquid state pouring continuous casting billet with molten steel flow divider |
| CN104907540B (en) * | 2015-06-15 | 2017-03-08 | 江苏大学 | A kind of method of the liquid pouring of electroslag continuous casting billet of strip steel water diverter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130626 Effective date of abandoning: 20150121 |
|
| RGAV | Abandon patent right to avoid regrant |