CN201442971U - Combined crystallizer of electroslag furnace - Google Patents
Combined crystallizer of electroslag furnace Download PDFInfo
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- CN201442971U CN201442971U CN2009200261523U CN200920026152U CN201442971U CN 201442971 U CN201442971 U CN 201442971U CN 2009200261523 U CN2009200261523 U CN 2009200261523U CN 200920026152 U CN200920026152 U CN 200920026152U CN 201442971 U CN201442971 U CN 201442971U
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- electroslag furnace
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Abstract
The utility model discloses a combined crystallizer of an electroslag furnace. The crystallizer comprises at least two monomers; the monomers are piled one by one from bottom to top when in use; each monomer comprises a copper-quality internal cylinder, a steel-quality external cylinder and two steel-quality flanges, wherein one flange is fixedly connected with one end part of the internal cylinder and one end of the external cylinder; the other flange is fixedly connected with the other end of the internal cylinder and the other end of the external cylinder; and the internal cylinder, the external cylinder and the flange enclose a closed cooled water chamber together. In the utility model, the integrated crystallizer is decomposed as a plurality of monomer structures that can be piled from bottom to top. When the crystallizer with the structure is used for smelting, the length of an electrode and a dummy electrode can be greatly shortened, therefore, an upper and lower stroke of a transverse arm of the electroslag furnace is reduced, the stability of the transverse arm of the electroslag is improved, the power consumption is reduced, and the manufacturing and using cost of the electroslag furnace is reduced.
Description
Technical field
The utility model relates to the electroslag furnace technical field, relates in particular to a kind of crystallizer that electroslag furnace is produced that is used for.
Background technology
Esr is a kind of secondary refining technology, the integrated metallurgical castingprocesses that the collection steel secondary refining combines with directional freeze.Its principle is that electric current passes through liquid slag scum thermal resistance, and with the metal electrode fusing, molten metal accumulates molten drop, passes slag blanket during drippage and enters metal pool, and crystallization and freezing becomes steel ingot in water mold then.Form the stage at the electrode tip drop, and drop passes the slag bath drippage stage, steel-slag fully contacts, and nonmetallic inclusionsin steel is absorbed by slag.Harmful element in the steel (sulphur, lead, antimony, bismuth, tin) is removed more effectively by steel-slag reaction and high-temperature gasification.Liquid metal has been avoided reoxidizing under slag bath covers basically.Because fusing, refining in the copper water mold, solidify, this has just stopped the pollution of refractory materials to steel.Before the ingot solidification, metal pool and slag bath are arranged, play insulation and feeding effect, guarantee the compactness of steel ingot in its upper end.The slag bath that rises forms the thin skull of one deck on the crystallizer inwall, not only make surface of steel ingot bright and clean, also plays insulation and heat-blocking action, and more heat is conducted to the bottom, helps steel ingot crystallographic orientation from bottom to top.Owing to above reason, the quality and the performance of the steel ingot of esr production are improved, and plasticity under the low temperature of steel alloy, room temperature and the high temperature and impelling strength strengthen, and steel prolong work-ing life.
On the electroslag metallurgy usage of trade the above crystallizer of 40t ingot is called large-scale crystallizer.Known crystallizer is generally single structure, and the crystallizer of so-called single structure is a kind of like this structure, and the shape of it and steel ingot is suitable and be monoblock type.This structure is for small-sized crystallizer, and shortcoming is not outstanding, but there is a series of problem in aspects such as for large-scale crystallizer, slave unit is supporting, technological operation, crystallizer manufacturing.
(1) the supporting aspect of electroslag furnace: when using the steel-making of single-piece large-scale crystallizer, electroslag furnace is satisfied to be produced, in the initial steel-making stage of crystallizer bottom, electrode and dummy electrode are very long, and the effective stroke up and down of electroslag furnace transverse arm is very big, the body of heater column is very high, and the bad stability of column transverse arm has increased the technical difficulty of electroslag furnace like this.
(2) steel ingot manufacturing cost aspect: after dummy electrode length increased, the output voltage of electroslag furnace and fire door voltage drop increased, and reactive loss strengthens, thereby has improved production cost.
(3) crystallizer manufacture view: limited by material specification, with 240t ingot esr crystallizer is example, it is 5050 * 9708mm that this crystallizer needs with the copper coin specification, single-piece weight 17.62t, and the maximum specification of domestic production copper coin is 3000 * 6000mm, single-piece weight must not surpass 6.5t, so single structure is difficult to realize.
As the present inventor, be devoted for years to design and manufacturing in crystallizer for electroslag furnace, have rich practice experience, through concentrating on studies of contriver, creatively overcome the existing above-mentioned technological deficiency of large-size electroslag furnace crystallizer.
Summary of the invention
Technical problem to be solved in the utility model is: a kind of combined crystallizer for electroslag furnace is provided, this crystallizer can be suitable with large-scale steel ingot under the situation of utilizing existing specification copper coin, and can effectively shorten the length of electrode and dummy electrode, thereby reduce the stroke up and down of electroslag furnace transverse arm, improve the stability of electroslag furnace transverse arm, reduce power loss, reduce the manufacturing cost and use cost of electroslag furnace.
For solving the problems of the technologies described above, the technical solution of the utility model is: combined crystallizer for electroslag furnace, comprise at least two monomers, and described monomer is stacked together in use from bottom to top one by one, and described each monomer comprises a copper inner barrel; The outer cylinder body of a steel; The ring flange of two steel, wherein, ring flange is fixedlyed connected with an end of described inner barrel and an end of outer cylinder body respectively, and another ring flange is fixedlyed connected with another end of described inner barrel and another end of outer cylinder body respectively; Described inner barrel, outer cylinder body and ring flange have surrounded an airtight cooling water cavity jointly.
As a kind of improvement, described each monomer also comprises the transition rings of two steel, wherein, transition rings is welded between the inner peripheral surface of end periphery of described inner barrel and ring flange, and another transition rings is welded between the inner peripheral surface of another end periphery of described inner barrel and another ring flange.
As a kind of improvement, the outer face of described transition rings is concordant with an end face of described inner barrel; With the outer face of the outer face of the ring flange of other monomer adjacency and corresponding transition rings a difference of altitude is arranged.
After having adopted technique scheme, the beneficial effects of the utility model are: because crystallizer comprises at least two monomers, during use, earlier the first segment monomer is positioned on the platform, after steel ingot condensation moulding is full of the first segment monomer, stack the second joint monomer more from bottom to top, by that analogy.When adopting the crystallizer of this structure to smelt, " progressively increasing " by crystallizer, can shorten the length of electrode and dummy electrode greatly, thereby reduce the stroke up and down of electroslag furnace transverse arm, improve the stability of electroslag furnace transverse arm, reduce power loss, reduce the manufacturing cost and use cost of electroslag furnace.Integrated structure requires low, smelting technology to need not change to electroslag furnace supporting, thereby and wherein monomer made up the melting of carrying out different tonnage steel ingots flexibly, accomplish a tractor serves several purposes, reduced the manufacturing cost of steel ingot.
Because each monomer also comprises the transition rings of two steel, under preheat mode, the transition rings with steel is welded on the end of copper inner barrel earlier, and then the ring flange of steel and the transition rings of steel are welded together under cold state.This structure is after fully taking into account following factor, and the inventive improvements of making: 1) thickness and the area of the ring flange of copper inner barrel and steel are all bigger; 2) copper, the steel wire coefficient of expansion differ big (copper is 16.8, and iron is 12), are welded on the copper inner barrel as if direct ring flange with steel, and the postwelding string stress is very easily with the drawing crack of copper steel junction.Transition rings thickness is less, can shrink relatively under the pulling force effect of weld seam in the cooling contraction process, and the stress of generation is little, thereby guarantees that weld seam does not produce slight crack.After this, the ring flange of steel and the transition rings of steel are welded together, its weld seam just can not be subjected to copper, the steel wire coefficient of expansion differs bigger influence again, thereby guarantees welding quality.This structure is significant to the manufacturing of large-size electroslag furnace crystallizer.
Because the outer face of described transition rings is concordant with an end face of described inner barrel; With the outer face of the outer face of the ring flange of other monomer adjacency and corresponding transition rings a difference of altitude is arranged.Present two aspects of the acting body of said structure: 1) can form " labyrinth type " sealed structure two monomeric connection ends, like this, even if slag cross inner barrel in conjunction with end face, it also can deposit in the annulus that described difference of altitude forms, and can directly not flow out from the slit between the contact end face of ring flange, thereby the raising sealing effectiveness reduces the generation of security incident.2) there is a difference of altitude outer face with the outer face of the ring flange of other monomer adjacency and corresponding transition rings, when two monomers stack up and down, can play the effect of radial location, and need not set a position device in addition.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the structure sectional view of the utility model embodiment;
Fig. 2 is the enlarged view at I place among Fig. 1;
Among the figure: 1, first monomer; 11, first inner barrel; 12, first outer cylinder body; 13, first transition rings; 14, first ring flange; 2, second monomer; 21, second inner barrel; 22, second outer cylinder body; 23, second transition rings; 24, second ring flange; 3, the 3rd monomer.
Embodiment
Fig. 1 discloses and the utility model discloses the structure sectional view of a kind of large-size electroslag furnace crystallizer of built-up type when stacking up and down.As shown in Figure 1, this crystallizer is made up of first monomer 1, second monomer 2 and the 3rd monomer 3.
Shown in Fig. 1 and Fig. 2 were common, first monomer 1 comprised first outer cylinder body 12 of copper first inner barrel 11, a steel, first transition rings 13 of two steel and first ring flange 14 of two steel.
One first transition rings 13 is welded between the inner peripheral surface of the periphery of an end of described first inner barrel 11 and one first ring flange 14, and another first transition rings 13 is welded between the inner peripheral surface 14 of the periphery of another end of described first inner barrel 11 and another first ring flange.Described first inner barrel 11, second outer cylinder body 12, the 3rd monomer 3 and first ring flange 14 have surrounded an airtight cooling water cavity jointly.
As shown in Figure 2, the outer face of first transition rings 13 is concordant with an end face of first inner barrel 11, and the outer face of second transition rings 23 is concordant with an end face of second inner barrel 21.There is a difference of altitude outer face of the outer face of first ring flange 14 and first transition rings 13, and also there is a difference of altitude outer face of the outer face of second ring flange 24 and second transition rings 23, and undoubtedly, these two difference of altitude equate.The structure shown in Fig. 2 is all used in end adjacent in all monomers.
During use, earlier first monomer 1 is positioned on the platform, after steel ingot condensation moulding is full of first monomer 1, stacks joint monomer 2 more from bottom to top, by that analogy.The crystallizer that the utility model disclosed is not limited to monomeric quantity, also can be more than two joints or three save, its inventive concept is mainly reflected in resolves into a plurality of monomer structures that can stack up and down with original integral crystallizer, when adopting the crystallizer of this structure to smelt, " progressively increasing " by crystallizer, can shorten the length of electrode and dummy electrode greatly, thereby reduce the stroke up and down of electroslag furnace transverse arm, improve the stability of electroslag furnace transverse arm, reduce power loss, reduce the manufacturing cost and use cost of electroslag furnace.Integrated structure requires low, smelting technology to need not change to electroslag furnace supporting, thereby and wherein monomer made up the melting of carrying out different tonnage steel ingots flexibly, accomplish a tractor serves several purposes, reduced the manufacturing cost of steel ingot.
Because each monomer also comprises the transition rings of two steel, under preheat mode, the transition rings with steel is welded on the end of copper inner barrel earlier, and then the ring flange of steel and the transition rings of steel are welded together under cold state.This structure is after fully taking into account following factor, and the inventive improvements of making: 1) thickness and the area of the ring flange of copper inner barrel and steel are all bigger; 2) copper, the steel wire coefficient of expansion differ big (copper is 16.8, and iron is 12), are welded on the copper inner barrel as if direct ring flange with steel, and the postwelding string stress is very easily with the drawing crack of copper steel junction.Transition rings thickness is less, can shrink relatively under the pulling force effect of weld seam in the cooling contraction process, and the stress of generation is little, thereby guarantees that weld seam does not produce slight crack.After this, the ring flange of steel and the transition rings of steel are welded together, its weld seam just can not be subjected to copper, the steel wire coefficient of expansion differs bigger influence again, thereby guarantees welding quality.This structure is significant to the manufacturing of large-size electroslag furnace crystallizer.
Because the outer face of described transition rings is concordant with an end face of described inner barrel; With the outer face of the outer face of the ring flange of other monomer adjacency and corresponding transition rings a difference of altitude is arranged.Present two aspects of the acting body of said structure: 1) can form " labyrinth type " sealed structure two monomeric connection ends, like this, even if slag cross inner barrel in conjunction with end face, it also can deposit in the annulus that described difference of altitude forms, and can directly not flow out from the slit between the contact end face of ring flange, thereby the raising sealing effectiveness reduces the generation of security incident.2) there is a difference of altitude outer face that is used for the ring flange that stacks up and down with the outer face of corresponding transition rings, when two monomers stack up and down, can play the effect of radial location, and need not set a position device in addition.
Claims (4)
1. combined crystallizer for electroslag furnace is characterized in that: comprise
At least two monomers, described monomer is stacked together in use from bottom to top one by one, and described each monomer comprises
A copper inner barrel;
The outer cylinder body of a steel;
The ring flange of two steel, wherein, ring flange is fixedlyed connected with an end of described inner barrel and an end of outer cylinder body respectively, and another ring flange is fixedlyed connected with another end of described inner barrel and another end of outer cylinder body respectively;
Described inner barrel, outer cylinder body and ring flange have surrounded an airtight cooling water cavity jointly.
2. combined crystallizer for electroslag furnace as claimed in claim 1, it is characterized in that: described each monomer also comprises the transition rings of two steel, wherein, transition rings is welded between the inner peripheral surface of end periphery of described inner barrel and ring flange, and another transition rings is welded between the inner peripheral surface of another end periphery of described inner barrel and another ring flange.
3. combined crystallizer for electroslag furnace as claimed in claim 2 is characterized in that: the outer face of described transition rings is concordant with an end face of described inner barrel; With the outer face of the outer face of the ring flange of other monomer adjacency and corresponding transition rings a difference of altitude is arranged.
4. combined crystallizer for electroslag furnace as claimed in claim 3 is characterized in that: described monomeric quantity is 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200261523U CN201442971U (en) | 2009-05-26 | 2009-05-26 | Combined crystallizer of electroslag furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200261523U CN201442971U (en) | 2009-05-26 | 2009-05-26 | Combined crystallizer of electroslag furnace |
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| CN201442971U true CN201442971U (en) | 2010-04-28 |
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| CN2009200261523U Expired - Fee Related CN201442971U (en) | 2009-05-26 | 2009-05-26 | Combined crystallizer of electroslag furnace |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110014136A (en) * | 2019-04-23 | 2019-07-16 | 沈阳铸造研究所有限公司 | A kind of method that the independent water mold of nesting realizes electroslag smelting casting removal subsidy |
| CN110076326A (en) * | 2019-05-20 | 2019-08-02 | 沈阳铸造研究所有限公司 | A kind of electroslag smelting casting shaped piece crystallizer water route control method |
| WO2021135223A1 (en) * | 2019-12-31 | 2021-07-08 | 浙江正达模具有限公司 | Crystallizer for metal electroslag remelting, electroslag remelting device and electroslag remelting method |
-
2009
- 2009-05-26 CN CN2009200261523U patent/CN201442971U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110014136A (en) * | 2019-04-23 | 2019-07-16 | 沈阳铸造研究所有限公司 | A kind of method that the independent water mold of nesting realizes electroslag smelting casting removal subsidy |
| CN110014136B (en) * | 2019-04-23 | 2021-05-04 | 沈阳铸造研究所有限公司 | Method for removing subsidies in electroslag casting by nesting independent water-cooled crystallizers |
| CN110076326A (en) * | 2019-05-20 | 2019-08-02 | 沈阳铸造研究所有限公司 | A kind of electroslag smelting casting shaped piece crystallizer water route control method |
| WO2021135223A1 (en) * | 2019-12-31 | 2021-07-08 | 浙江正达模具有限公司 | Crystallizer for metal electroslag remelting, electroslag remelting device and electroslag remelting method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100428 Termination date: 20130526 |