CN204690077U - A kind of electrical steel plasma suspension device - Google Patents
A kind of electrical steel plasma suspension device Download PDFInfo
- Publication number
- CN204690077U CN204690077U CN201520342297.XU CN201520342297U CN204690077U CN 204690077 U CN204690077 U CN 204690077U CN 201520342297 U CN201520342297 U CN 201520342297U CN 204690077 U CN204690077 U CN 204690077U
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- supporting seat
- seat
- cavity
- electrical steel
- stove
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Abstract
The utility model discloses a kind of electrical steel plasma suspension device, comprise supporting seat and electrode bar (2); Supporting seat is fixedly connected with drop-bottom (1) and insulate with drop-bottom (1), is provided with cavity in supporting seat; Electrode bar (2) stretches in the cavity of supporting seat; Supporting seat upper surface is provided with can for the outlet (8) of gas ejection in supporting seat cavity, and the upper surface of supporting seat is the bearing surface of electrical steel; Supporting seat lower end is provided with and supplied gas can enters the import (7) of cavity in stove; Power supply (6) is by circuit connection electrode rod (2) and supporting seat, the supporting seat part be connected with circuit is conductive material, from the gas that import (7) enters, in upper cavity (41) and lower chamber (31), electric discharge is discharged from outlet (8) after forming plasma body, be ejected into operating steel band, formed and steel band is supported, avoid or reduce annealed band surface damage.
Description
Technical field
The utility model belongs to electrical steel treatment facility technical field, particularly relates to a kind of electrical steel plasma suspension device.
Background technology
The large-scale continuous production of cold rolling high grade electric steel is by improving Si, Al content of steel, reduces the impurity element of steel, reasonable hot rolling and provide continuous annealing (high temperature) and realize.The high grade electric steel trade mark is higher, and iron loss is lower.Iron loss reduces, and cold rolled annealed temperature improves the means that are absolutely necessary.
The annealing of cold rolling non-oriented electrical steel realizes in continuous annealing furnace.The function of continuous annealing furnace can realize under reducing atmosphere, form by the carbon in steel that is present in of water vapour the recrystallize that carbon monoxide removes unnecessary carbon and high annealing temperature realization requirement from steel.Realize decarburization and the recrystallize of steel band, the protective atmosphere of the different piece in continuous annealing furnace is different with Heating temperature, and the atmosphere of decarbonized portion is made up of hydrogen, nitrogen and water vapour, and dew point is high, temperature is lower; The protective atmosphere of recrystallize part is made up of hydrogen, nitrogen, and dew point is low, temperature is high, and temperature annealing more than 1000 DEG C wishes to reach.
Realizing in process of the present utility model, utility model people finds that prior art at least exists following problem:
Electrical steel magnetic property is very responsive to internal stress, and annealing process requires to ensure low internal stress, and the high-temperature part of continuous annealing furnace forbids that steel band causes steel band bending by deflector roll and forms stress for this reason.Namely cold rolling electric continuous annealing all adopts horizontal stove anneal, and in horizontal stove, prior art adopts supporting roll to support steel band.For preventing support roller from causing damage to steel strip surface, there is very high requirement to roll surface.Present supporting roll is adopt carbon materials (graphite) or pottery to manufacture roller shell to contact with belt steel surface substantially.
Because high-silicon electrical steel annealing needs through too high moisture, hot environment, the surface of steel is oxidized, reduce under high hydrogen atmosphere, hot conditions again, steel surface is very soft, under high temperature and deadweight condition, be very easy to the support roller surface sticking to carbon materials (graphite) or pottery manufacture, annealed band surface is badly damaged.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of employing plasma gas floating support electrical steel, avoids or reduce the electrical steel plasma suspension device of annealed band surface damage.
In order to solve the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of electrical steel plasma suspension device, comprises supporting seat and electrode bar;
Described supporting seat is fixedly connected with drop-bottom and insulate with drop-bottom, is provided with cavity in described supporting seat;
Described electrode bar stretches in the cavity of supporting seat;
Described supporting seat upper surface is provided with can for the outlet of gas ejection in supporting seat cavity, and the upper surface of supporting seat is the bearing surface of electrical steel; Supporting seat lower end is provided with and supplied gas can enters the import of cavity in stove;
Power supply is by circuit connection electrode rod and supporting seat, and the supporting seat part be connected with circuit is conductive material.
Described supporting seat is formed by connecting by the seat of honour and lower seat, and the described seat of honour is electro-conductive material, and described lower seat is insulating material.
Be provided with upper cavity in the described seat of honour, in described lower seat, be provided with lower chamber; Described upper cavity is semisphere; Import is arranged on lower seat, and outlet is arranged on the seat of honour.
Described electrode bar upper end is ball-type and stretches in upper cavity.
What in stove, enter cavity by import is shielding gas in stove, is hydrogen/nitrogen.
The described seat of honour and lower seat are cylindrical.
Described current conducting rod stretches in stove from stove, described power supply be positioned at stove outer and with electrode bar stove outward part be connected; The described seat of honour is provided with current conducting rod, and described power supply is connected with current conducting rod by circuit.
A technical scheme tool in technique scheme has the following advantages or beneficial effect, by arranging an electric heating chamber.In electric heating chamber, by gaseous media under the heating of strong current, gas temperature improves, and forms plasma flow.At this moment expand under plasma gas volume ratio room temperature doubly a lot, the gas after volumetric expansion is ejected into operating steel band by outlet, is formed and supports steel band.
Utilize neutral character and the high-temperature volume expansion of plasma body, rely on the Bernoulli effect of high temperature fluid, make the steel band in annealing process, can support not having roller-way or steel band be reduced the pressure of roller-way due to the support of gas, decrease supporting roll high temperature, the loss of high humidity and dross, steel band can be annealed at the temperature higher than usual steel band.
Under same quality coil of strip metallurgical quality condition, can improve annealing high, the iron loss of electrical steel is reduced.
1), under same quality coil of strip metallurgical quality condition, the electrical steel of the higher trade mark (iron loss is lower) can be obtained;
2) due to the suspension of steel band, avoid or alleviate to the damage of supporting roll or dross in heat-processed, obtaining high magnetic characteristics (low iron loss, the trade mark are higher) and the high silicon of excellent surface quality, high grade electric steel.
Accompanying drawing explanation
A kind of structural representation of electrical steel plasma suspension device of Fig. 1 for providing in the utility model embodiment;
Mark in above-mentioned figure is: 1, drop-bottom, and 2, electrode bar, 3, lower seat, 31, lower chamber, 4, the seat of honour, 41, upper cavity, 5, current conducting rod, 6, power supply, 7, import, 8, outlet.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearly, below in conjunction with accompanying drawing, the utility model embodiment is described in further detail.
Embodiment one
See Fig. 1, a kind of electrical steel plasma suspension device, comprises supporting seat and electrode bar 2;
Supporting seat is fixedly connected with drop-bottom 1 and insulate with drop-bottom 1, is provided with cavity in supporting seat;
Electrode bar 2 stretches in the cavity of supporting seat;
Supporting seat upper surface is provided with can for the outlet 8 of gas ejection in supporting seat cavity, and the upper surface of supporting seat is the bearing surface of electrical steel; Supporting seat lower end is provided with and supplied gas can enters the import 7 of cavity in stove;
Power supply 6 is by circuit connection electrode rod 2 and supporting seat, and the supporting seat part be connected with circuit is conductive material.
Supporting seat is formed by connecting by the seat of honour 4 and lower seat 3, and the seat of honour 4 is heat-resisting, electro-conductive material, and lower seat 3 is heat-resisting, electrically insulating material.Supporting seat arranges two portions composition, and lower seat 3 is isolation material, realizes being connected with the insulation of drop-bottom 1.The seat of honour 4 is electro-conductive material, forms discharge portion with electrode bar 2, forms plasma body.Power supply 6 pair of electrodes forming electrode bar 2 and the seat of honour 4 in inside of powering forms arc-over.Arc-over makes gas temperature raise rapidly, volumetric expansion is huge, forms the nozzle that high velocity air enters second section.The major part of supporting seat is electrical isolation, namely descends seat 3 to be insulation, only retains the seat of honour 4 and form arc-over in the front end of electrode bar 2.
Be provided with upper cavity 41 in the seat of honour 4, in lower seat 3, be provided with lower chamber 31; Upper cavity 41 is semisphere; Import 7 is arranged on lower seat 3, and outlet 8 is arranged on the seat of honour 4.
Electrode bar 2 upper end is ball-type and stretches in upper cavity 41.Electrode bar 2 is cylinder shape, and head is class ball-type, and a part connects power supply 6 outward at annealing furnace, and a part forms plasma body with cavity by geseous discharge in stove.Electrode bar 2 is with heat-resisting, electro-conductive material manufacture, such as: silicon carbide, graphite, W or Mo etc.
Upper cavity 41 is that semisphere is relative with the ball-type of electrode bar 2 upper end, and the advantage of ball-type is that machining area is large, when same discharging current, current density is little, consumption of electrode is little, the life-span is high.
What in stove, enter cavity by import 7 is shielding gas in stove, is hydrogen/nitrogen.
The seat of honour 4 and lower seat 3 are cylindrical, interior sky.
Current conducting rod 5 stretches in stove from stove, power supply 6 be positioned at stove outer and with electrode bar 2 stove outward part be connected; The seat of honour 4 is provided with current conducting rod 5, and power supply 6 is connected with current conducting rod 5 by circuit.Producing plasma body relies on power supply 6 to power.Current conducting rod 5 part connects power supply 6 outward at annealing furnace, and a part forms plasma body with cavity by geseous discharge in stove.Power supply 6 is arranged on outside stove, plays the effect of protection power source 6 and electric wire.
The seat of honour 4 is provided with a current conducting rod 5 manufactured with heat-resisting, electro-conductive material, such as: silicon carbide, graphite, W or Mo etc.Current conducting rod 5 stretches out outside stove, is connected outside stove with power supply 6.Electrode bar 2 is connected with power supply 6 by electric wire in the outer part of stove with current conducting rod 5, forms electric loop.Electricity loop is: power supply 6 → electrode bar 2 → shielding gas → cavity → current conducting rod 5 → power supply 6.
From the gas that import 7 enters, in upper cavity 41 and lower chamber 31, electric discharge is discharged from outlet 8 after forming plasma body, is ejected into operating steel band, is formed and support steel band.
Embodiment two
A making method for above-mentioned electrical steel plasma suspension device, comprises the steps:
1) make a call to a hole at drop-bottom 1, and make electrode bar 2 from hole through stretching in stove;
2) to be sleeved on electrode bar 2 with the lower seat 3 of import 7 and to be fixedly connected with drop-bottom 1;
3) seat of honour 4 inside being provided with hemispherical cavity is connected with lower seat 3, and the ball-shaped end of electrode bar 2 stretches in the upper cavity 41 at the seat of honour 4;
4) on the seat of honour 4, connect current conducting rod 5, current conducting rod 5 stretches out outside stove;
5) power supply 6 be positioned at outside stove is positioned at the part outside stove by circuit connection current conducting rod 5 and electrode bar 2.
The large discharge of high-temperature plasma shown in Fig. 1 generating unit.High-temperature plasma large discharge generating unit is cylinder shape, is cast on drop-bottom 1.Drop-bottom 1 opens a circular hole, and electrode bar 2 is extended there through.
Electrode bar 2 half is used for the connection with power supply 6 in annealing furnace outside, and half realizes the electric discharge between cavity in annealing furnace, relies on the geseous discharge entered from import 7 to form high-temperature plasma.High-temperature plasma is due to temperature rising, volumetric expansion, and the gas of volumetric expansion is discharged from outlet 8 and supported annealed band.
The object of this device forms large gas flow to form the factor that the amplitude improved the enough anchorage force of steel band, gas temperature is not overriding concern.Therefore, the diameter of electrode bar 2 is large, the area of electrode bar 2 pairs of upper cavities 41 and lower chamber 31 is large, the head of electrode bar 2 is similar round, and another advantage of similar round is that machining area is large, when same discharging current, current density is little, consumption of electrode is little, the life-span is high.
The medium that this device generation plasma body adopts is the shielding gas in annealing furnace, and the temperature of shielding gas is consistent with annealing furnace temperature, generally more than 750 DEG C, so forms the power requiring plasma device to need relatively little.
Producing plasma body relies on power supply 6 to power.
After adopting above-mentioned scheme, by arranging an electric heating chamber.In electric heating chamber, by gaseous media under the heating of strong current, gas temperature improves, and forms plasma flow.At this moment expand under plasma gas volume ratio room temperature doubly a lot, the gas after volumetric expansion is ejected into operating steel band by outlet 8, is formed and supports steel band.
Utilize neutral character and the high-temperature volume expansion of plasma body, rely on the Bernoulli effect of high temperature fluid, make the steel band in annealing process, can support not having roller-way or steel band be reduced the pressure of roller-way due to the support of gas, decrease supporting roll high temperature, the loss of high humidity and dross, steel band can be annealed at the temperature higher than usual steel band.
Under same quality coil of strip metallurgical quality condition, can improve annealing high, the iron loss of electrical steel is reduced.
1), under same quality coil of strip metallurgical quality condition, the electrical steel of the higher trade mark (iron loss is lower) can be obtained;
2) due to the suspension of steel band, avoid or alleviate to the damage of supporting roll or dross in heat-processed, obtaining high magnetic characteristics (low iron loss, the trade mark are higher) and the high silicon of excellent surface quality, high grade electric steel.
By reference to the accompanying drawings the utility model is exemplarily described above; obvious the utility model specific implementation is not subject to the restrictions described above; as long as have employed the improvement of the various unsubstantialities that method of the present utility model is conceived and technical scheme is carried out; or design of the present utility model and technical scheme directly applied to other occasion, all within protection domain of the present utility model without to improve.
Claims (7)
1. an electrical steel plasma suspension device, is characterized in that, comprises supporting seat and electrode bar (2);
Described supporting seat is fixedly connected with drop-bottom (1) and insulate with drop-bottom (1), is provided with cavity in described supporting seat;
Described electrode bar (2) stretches in the cavity of supporting seat;
Described supporting seat upper surface is provided with can for the outlet (8) of gas ejection in supporting seat cavity, and the upper surface of supporting seat is the bearing surface of electrical steel; Supporting seat lower end is provided with and supplied gas can enters the import (7) of cavity in stove;
Power supply (6) is by circuit connection electrode rod (2) and supporting seat, and the supporting seat part be connected with circuit is conductive material.
2. electrical steel plasma suspension device as claimed in claim 1, it is characterized in that, described supporting seat is formed by connecting by the seat of honour (4) and lower seat (3), and the described seat of honour (4) are electro-conductive material, and described lower seat (3) is insulating material.
3. electrical steel plasma suspension device as claimed in claim 2, is characterized in that, be provided with upper cavity (41) in the described seat of honour (4), be provided with lower chamber (31) in described lower seat (3); Described upper cavity (41) is semisphere; Import (7) is arranged on lower seat (3), and outlet (8) is arranged on the seat of honour (4).
4. electrical steel plasma suspension device as claimed in claim 3, it is characterized in that, described electrode bar (2) upper end is ball-type and stretches in upper cavity (41).
5. electrical steel plasma suspension device as claimed in claim 1, is characterized in that, what in stove, enter cavity by import (7) is shielding gas in stove, is hydrogen/nitrogen.
6. electrical steel plasma suspension device as claimed in claim 2, it is characterized in that, the described seat of honour (4) and lower seat (3) are cylindrical.
7. electrical steel plasma suspension device as claimed in claim 2, it is characterized in that, described current conducting rod (5) stretches in stove from stove, described power supply (6) be positioned at stove outer and with electrode bar (2) stove outward part be connected; The described seat of honour (4) is provided with current conducting rod (5), and described power supply (6) is connected with current conducting rod (5) by circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520342297.XU CN204690077U (en) | 2015-05-25 | 2015-05-25 | A kind of electrical steel plasma suspension device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520342297.XU CN204690077U (en) | 2015-05-25 | 2015-05-25 | A kind of electrical steel plasma suspension device |
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| Publication Number | Publication Date |
|---|---|
| CN204690077U true CN204690077U (en) | 2015-10-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520342297.XU Expired - Fee Related CN204690077U (en) | 2015-05-25 | 2015-05-25 | A kind of electrical steel plasma suspension device |
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| CN (1) | CN204690077U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104831054A (en) * | 2015-05-25 | 2015-08-12 | 马钢(集团)控股有限公司 | Electrical sheet plasma suspension device and manufacturing method thereof |
-
2015
- 2015-05-25 CN CN201520342297.XU patent/CN204690077U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104831054A (en) * | 2015-05-25 | 2015-08-12 | 马钢(集团)控股有限公司 | Electrical sheet plasma suspension device and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151007 Termination date: 20180525 |
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| CF01 | Termination of patent right due to non-payment of annual fee |