CN201545898U - Dummy ingot composition plate for electroslag remelting - Google Patents
Dummy ingot composition plate for electroslag remelting Download PDFInfo
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- CN201545898U CN201545898U CN2009202110621U CN200920211062U CN201545898U CN 201545898 U CN201545898 U CN 201545898U CN 2009202110621 U CN2009202110621 U CN 2009202110621U CN 200920211062 U CN200920211062 U CN 200920211062U CN 201545898 U CN201545898 U CN 201545898U
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- dummy
- dummy plate
- crystallizer
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Abstract
The utility model discloses a dummy ingot composition plate for electroslag remelting, which is laid between a crystallizer and a bottom water tank panel after centering. The dummy ingot composition plate comprises a dummy plate and a lining plate, wherein the dummy plate is a rectangular plane plate, and the lining plate consists of two semi-circular lining plates. The thickness of the dummy plate is same with that of the lining plate; the dummy plate is arranged between the two semi-circular lining plates; four corners of the dummy plate are matched with the gap at the inwards concave point of the lining plate; and the two long edges of the dummy plate form an arched gap together with the inwards concave point of the lining plate. The dummy ingot composition plate is capable of guaranteeing sufficient contact area, meeting conductivity requirements, solving the problem of slag inclusion, reducing arcing breakdown due to shunting of the crystallizer, reducing accident rate and guaranteeing economical efficiency, therefore having favorable application and popularization value.
Description
Technical field
The utility model relates to a kind of Dummy plate that is used for esr, relates in particular to a kind of dummy ingot compoboard that is used for esr.
Background technology
The esr ultimate principle fills slag fused as shown in Figure 1 in copper water mold 32, consumable electrode one end inserts in the slag.Consumable electrode 31, slag bath 34, metal pool 35, steel ingot 36, Dummy plate 39, end water tank panel 28 form the loop by short net lead and transformer.
The effect of Dummy plate: water tank at the bottom of the starting the arc, conduction and the protection.In current circuit, Dummy plate is connecting electroslag ingot and end water tank panel, and the contact quality between Dummy plate and electroslag ingot, the end water tank panel (being the planeness of Dummy plate) affects the possibility of beating arc.
At present, at smelting φ 520 ingot shape ESR ingot, use φ 422 ingot shape electrodes, the Dummy plate of employing is 300 * 300 square.Main theory is according to being:
At the beginning of the energising, Dummy plate 39 effects are to guarantee the electrode 31 normal starting the arc 41, avoid directly beating arc with end water tank panel 38 and cause end water tank panel to play arcing.Electrode head is an arc, and the striking agent is put in the Dummy plate central position, and the electrode starting the arc drops on the Dummy plate central position substantially.300 * 300 quadrate catercorner lengths are 424mm, and are suitable substantially with φ 422 electrode diameters, and area accounts for 65% of electrode area, can guarantee that the starting the arc drops on the Dummy plate, the normal starting the arc.Smelt the later stage, the Dummy plate effect is after the solid steel ingot forms, and whole smelting current circuit is normal.Smelting initial stage synoptic diagram as shown in Figure 2.
Placement between end water tank panel, Dummy plate and the crystallizer three is centered in the actually operating difficulty, and Dummy plate is excessive, Dummy plate contact with the crystallizer inwall or distance too small, thereby cause crystallizer to beat arc, crystallizer is understood breakdown in the time of seriously.The catercorner length of 300 * 300 square Dummy plates is 424mm, reaches 81.5% of φ 520 crystallizer diameters, and the distance that leaves can satisfy operational error substantially.
Dummy plate is an expendable consumed product, and is not recyclable, so use size will consider economy.With regard to material usable floor area size, 300 * 300 square Dummy plates meet and fall this principle.
Make square Dummy plate, excision forming is economized for cutting material in shape most easily, and dead meal is minimum.
Yet the actual service condition of this Dummy plate is:
According to statistics, the Dummy plate fusing situation after in January, 2007 to March, φ 520 ingot shapes were smelted, 87.5% Dummy plate fusing degree surpass seventy percent (causing the Dummy plate loss more greatly owing to smelt initial current).According to smelting technology, current value is fixed, if the Dummy plate contact area is little, current density is big, and resistance heat easily melts Dummy plate; If the Dummy plate contact area is enough big, guarantee current density value low to the resistance heat deficiency so that Dummy plate easily melt.
According to statistics, it is 1.41% that the crystallizer after in January, 2007 to March, φ 520 ingot shapes were smelted is beaten the arcing incidence.The investigation back is found, in process of production, except that causing the crystallizer puncture owing to the Dummy plate fusing, since scurry slag (phenomenon in the electroslag smelting) or the Dummy plate planeness not enough, the slit that melt cinder flows between Dummy plate and the end water tank panel easily forms cinder inclusion, cinder inclusion causes current circuit to interrupt, thereby the crystallizer shunting is increased, and causes the fusing of crystallizer inwall to puncture.
The another kind phenomenon is to cause the steel ingot middle and upper part " to block " owing to crystallizer local deformaton, and the steel ingot cooling is upwards shunk steel ingot is not dropped on the Dummy plate, causes crystallizer to play arc or current circuit interruption can't continuation smelting.
For finding out solution: the external way that adopts is to increase Dummy plate and end water tank panel contact area.Use circular Dummy plate, diameter greater than crystallizer at the bottom of flange outer diameter.Like this, the contact surface of Dummy plate and end water tank panel is enough big, and electroconductibility is guaranteed, and has avoided the Dummy plate melting phenomenon, has solved the cinder inclusion problem simultaneously; Crystallizer is placed on it, and is stable, even and steel ingot middle and upper part, crystallizer distortion back " block ", the steel ingot cooling is upwards shunk the crystallizer that causes and is beaten the bad phenomenon that arc or current circuit interrupt can't continuing to smelt etc. and also eliminate in the lump.
But at present domestic production practical situation, to φ 520 ingot shape crystallizers, end flange outer diameter is φ 740, uses the Dummy plate of φ 800 specifications at least, and relatively 300 * 300 is square, and every Dummy plate is spent more 482 yuan of expenses.According to annual φ 520 ingot shape steel ingots 1350 stoves of producing of our factory, then the Dummy plate cost needs 650,000 yuan of many consumption, and cost is too high.Because Dummy plate is an expendable consumed product, use the back all discarded greater than the part of steel ingot, waste of material is serious, and needs electric welding to cut away, and multiple working procedure is wasted time and energy.Because be circular, starting material cutting difficulty is big again, and residue material also waste is serious.Also there is carrying inconvenience, places the high operation difficult point of centering difficulty.
Summary of the invention
The purpose of this utility model provides a kind of dummy ingot compoboard that is used for esr, has both guaranteed that contact area is enough big, satisfied the electroconductibility requirement, solve cinder inclusion simultaneously, minimizing is shunted the arcing of beating that causes because of crystallizer, reduces accident rate, guarantees economy simultaneously.
The technical solution of the utility model is as follows: the utility model has comprised Dummy plate and two annular liner plates, Dummy plate and two annular liner plate combination pavings place flange section at the bottom of the crystallizer, fully guarantee contact area, strengthen electroconductibility, reduce crystallizer and beat the arcing rate.
The purpose of this utility model is achieved in that a kind of dummy ingot compoboard that is used for esr, and centering is layered between crystallizer and the end water tank panel, comprises Dummy plate and liner plate:
Described Dummy plate is a rectangular flat plate, described liner plate is two blocks of semi-circular liner plates, the thickness of described Dummy plate and liner plate is identical, and Dummy plate places in the middle of the two semi-circular liner plates, the place, four angles of Dummy plate and the interior recess running fit of liner plate, place, two long limits forms the arch gap with the interior recess of liner plate.
Preferably, described Dummy plate is of a size of:
A＝D+(10～40)mm
B＝0.707d+(0～20)mm
In the formula:
A is the length of rectangle Dummy plate
B is the width of rectangle Dummy plate
D is the crystallizer internal diameter
D is an electrode diameter;
Described liner plate is of a size of:
External diameter=D1+ (0～20) mm
Internal diameter=D
In the formula:
D1 is the flange size of crystallizer bottom.
Consider Dummy plate be 300 * 300 square and areas greater than crystallizer at the bottom of the merits and demerits of two kinds of settling modes of flange square (φ 740).Because melting initial stage Dummy plate mainly conducts electricity and melt portions is in central electrode diameter (φ 422) scope, increase Dummy plate length greater than 422mm, guarantee to conduct electricity and consider that crystallizer is placed steadily and Dummy plate utilizes useful area unobstructed the time, long limit is greater than crystallizer internal diameter 10mm, make crystallizer place four jiaos of rectangles, guaranteed that conduction is smooth and easy.
Crystallizer places on the Dummy plate, between the limit of Dummy plate and the crystallizer slit is arranged, easily cause the melt cinder outflow, the design auxiliary is proposed, cooperate placement to use with Dummy plate, consider crystallizer centering degree simultaneously and place steady, design two annular liner plate splicing groups and, place flange section at the bottom of the crystallizer, mat formation, both guaranteed that crystallizer places steadily with square Dummy plate, the more important thing is that liner plate also conducts electricity, even the Dummy plate fusing can guarantee that also liner plate contacts conduction with end water tank panel and end water tank panel contact area increases, electroconductibility further strengthens.Also solved the problem of wearing slag between unborn crystallizer and the end water tank panel simultaneously.
Preferably, fill slag charge at the gap location of described annular liner plate and Dummy plate.
Slag charge is filled in the gap, mainly plays two effects.The one, preventing has the slit between Dummy plate and two annular liner plates, easily causes and beats arc; The 2nd, the blocking-up melt cinder directly enters the Dummy plate bottom, and cooling back crust forms cinder inclusion between Dummy plate and end water tank panel, guarantees electroconductibility.
The utility model makes it compared with prior art owing to adopted above technical scheme, has the following advantages and positively effect:
1) use the utility model, electroconductibility strengthens, and the Dummy plate melting phenomenon reduces to a great extent, and crystallizer is beaten the arcing rate and obviously descended.
2) use the utility model, can prevent that steel ingot from shrinking rising, keeps end water tank panel and Dummy plate good electrical conductivity.
3) use the utility model, liner plate does not have distortion, and is reusable.
4) use the utility model, not only improve the electroslag smelting quality, reduced crystallizer and beaten the arcing rate, and reduce the supplies consumption of Dummy plate and liner plate.
Description of drawings
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Fig. 1 is esr ultimate principle figure.
Fig. 2 is an electric slag refusion and smelting initial stage synoptic diagram.
Fig. 3 is an annular liner plate of the present utility model.
Fig. 4 is dummy ingot compoboard synoptic diagram a of the present utility model.
Fig. 5 is dummy ingot compoboard synoptic diagram b of the present utility model.
Among the figure:
1-crystallizer 2-Dummy plate 3-annular liner plate
4-fills slag charge 31-electrode 32-crystallizer
33-water coolant 34-slag bath 35-metal pool
36-solidifies water tank panel at the bottom of the steel ingot 37-slag crust 38-
39-Dummy plate 40-power supply 41-arc
Embodiment
At first, place Dummy plate, guarantee that Dummy plate well contacts with end water tank panel, guarantee electroconductibility.Guarantee simultaneously that Dummy plate places to neutrality.
As shown in Figure 3, in the present embodiment, the length A=D+ of Dummy plate 2 (10～40) mm, B=0.707d+ (0～20) mm, the D=520mm here, d=422mm, therefore, Dummy plate length A=540mm, width B=300mm; External diameter=D1+ (0～20) mm of annular liner plate 3 of while, internal diameter=D, the D=520mm here, d=422mm, D1=740mm, therefore, the external diameter=760mm of annular liner plate, internal diameter=520mm.
Among Fig. 3, the length of the rectangle breach of annular liner plate and the wide 560mm of being respectively and 340mm and Dummy plate length and width have difference, are slightly larger than the length and width of Dummy plate, because the suit combination can not fully agree with, must leave surplus, make things convenient for the job site assembling.
As shown in Figure 4, place the splicing group and two annular liner plates 3, mat formation with Dummy plate 2, the thickness of Dummy plate and liner plate is identical, and Dummy plate places in the middle of the two semi-circular liner plates, the place, four angles of Dummy plate and the interior recess running fit of liner plate, place, two long limits forms the arch gap with the interior recess of liner plate;
As shown in Figure 5, the gap is filled slag charge 4 backs and is placed crystallizer 1, notes centering when placing crystallizer, because the inner periphery of crystallizer is identical with the liner plate internal diameter, so confirm that both overlap substantially when placing, the crystallizer while also places on four jiaos of the rectangles like this, guarantees its stability.
After placing crystallizer, can begin the smelting work of switching on.After the starting the arc, electric current conducts electricity simultaneously by Dummy plate and liner plate, has guaranteed and the contact area of end water tank panel that electroconductibility strengthens, and Dummy plate also is difficult for fusing; Crystallizer places on four jiaos of the rectangles, has solved that Dummy plate contacts with the crystallizer inwall or the distance is too small and causes crystallizer to beat the accident of arc, and crystallizer is pushed down Dummy plate simultaneously, prevents that the steel ingot cooling from upwards shrinking and the phenomenon that causes current circuit to interrupt; The solid slag that fill the gap in the combination, stoped the slag charge of follow-up adding to be melted into melt cinder after, enter into and form cinder inclusion between Dummy plate and the end water tank panel and intercept conduction, play the effect that prevents the current circuit interruption.Like this, guaranteeing that smelting process is carried out smoothly under the situation of fully conducting electricity, reduction causes the accident rate of playing arcing because of the crystallizer shunting.
Along with the continuous adding of solid slag, fusing forms the melt cinder slag bath, and smelting work enters into the remelting stage, as long as the starting the arc stage has guaranteed electroconductibility, follow-up smelting work just can guarantee direct motion fully, has not been played arcing thereby the crystallizer shunting can not take place.
By using the combination of novel Dummy plate and liner plate, crystallizer is beaten the arcing incidence and is reduced to 0.72% by original 1.41%.As seen, use the respond well of dummy ingot compoboard of the present utility model.
In sum, use dummy ingot compoboard of the present utility model, both guaranteed that contact area was enough big, satisfy the electroconductibility requirement again, solve cinder inclusion simultaneously, the arcing of beating that causes is shunted in minimizing because of crystallizer, reduce accident rate, guarantee economy simultaneously, thereby possess good prospect for promotion and application.
Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the utility model, and be not to be used as qualification of the present utility model, as long as in connotation scope of the present utility model, all will drop in claims scope of the present utility model variation, the modification of the above embodiment.
Claims (3)
1. dummy ingot compoboard that is used for esr, centering is layered between crystallizer and the end water tank panel, comprises Dummy plate and liner plate, it is characterized in that:
Described Dummy plate is a rectangular flat plate, described liner plate is two blocks of semi-circular liner plates, the thickness of described Dummy plate and liner plate is identical, and Dummy plate places in the middle of the two semi-circular liner plates, the place, four angles of Dummy plate and the interior recess running fit of liner plate, place, two long limits forms the arch gap with the interior recess of liner plate.
2. the dummy ingot compoboard that is used for esr as claimed in claim 1, it is characterized in that: described Dummy plate is of a size of:
A＝D+(10～40)mm
B＝0.707d+(0～20)mm
In the formula:
A is the length of rectangle Dummy plate
B is the width of rectangle Dummy plate
D is the crystallizer internal diameter
D is an electrode diameter;
Described liner plate is of a size of:
External diameter=D1+ (0～20) mm
Internal diameter=D
In the formula:
D1 is the flange size of crystallizer bottom.
3. the dummy ingot compoboard that is used for esr as claimed in claim 1 is characterized in that: the gap location at described annular liner plate and Dummy plate is filled slag charge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202110621U CN201545898U (en) | 2009-10-21 | 2009-10-21 | Dummy ingot composition plate for electroslag remelting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202110621U CN201545898U (en) | 2009-10-21 | 2009-10-21 | Dummy ingot composition plate for electroslag remelting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201545898U true CN201545898U (en) | 2010-08-11 |
Family
ID=42601067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202110621U Expired - Lifetime CN201545898U (en) | 2009-10-21 | 2009-10-21 | Dummy ingot composition plate for electroslag remelting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201545898U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104141052A (en) * | 2014-08-18 | 2014-11-12 | 洛阳双瑞特种装备有限公司 | Start casting device for stripping-type electroslag remelting of corrosion-resistance alloy slab |
-
2009
- 2009-10-21 CN CN2009202110621U patent/CN201545898U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104141052A (en) * | 2014-08-18 | 2014-11-12 | 洛阳双瑞特种装备有限公司 | Start casting device for stripping-type electroslag remelting of corrosion-resistance alloy slab |
| CN104141052B (en) * | 2014-08-18 | 2016-04-27 | 洛阳双瑞特种装备有限公司 | Non-corrosive metal slab stripping esr dummy device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: BAOSTEEL SPECIAL STEEL CO., LTD. Free format text: FORMER OWNER: BAOSHAN IRON + STEEL CO., LTD. Effective date: 20140130 |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 201900 BAOSHAN, SHANGHAI TO: 200940 BAOSHAN, SHANGHAI |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140130 Address after: 200940 Baoshan District aquatic Road, Shanghai, No. 1269 Patentee after: BAOSTEEL SPECIALSTEEL CO., LTD. Address before: 201900 Shanghai City, Mudanjiang Road No. 1813 South Patentee before: Baoshan Iron & Steel Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100811 |
|
| CX01 | Expiry of patent term |