CN201538804U - Electric slag furnace crystallizer convenient to reduce welding stress between copper members or steel members - Google Patents
Electric slag furnace crystallizer convenient to reduce welding stress between copper members or steel members Download PDFInfo
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- CN201538804U CN201538804U CN2009200261519U CN200920026151U CN201538804U CN 201538804 U CN201538804 U CN 201538804U CN 2009200261519 U CN2009200261519 U CN 2009200261519U CN 200920026151 U CN200920026151 U CN 200920026151U CN 201538804 U CN201538804 U CN 201538804U
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Abstract
The utility model discloses an electric slag furnace crystallizer convenient to reduce welding stress between copper members or steel members, which comprises a copper inner cylinder, a steel outer cylinder, a steel flange plate, and a steel transition ring, wherein the transition ring is welded between the outer peripheral surface of the end part of the inner cylinder and the inner peripheral surface of the flange plate; and the inner cylinder, the outer cylinder, the transition ring and the flange plate form a closed cooling water chamber together by surrounding. The utility model effectively solves the problem of generation of larger stress between the copper members and the steel members when being preheated for welding, and shrunk due to cooling after welding, and ensures the welding quality; and the technology of the utility model has significant meaning for manufacturing large crystallizers.
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.
In the manufacturing processed of crystallizer, because inner barrel is copper, ring flange is a steel, and both thickness and area are all bigger, when under preheat mode, welding, owing to copper, the steel wire coefficient of expansion differ big (copper is 16.8, and iron is 12), weld if directly the steel flange dish is assemblied on the copper inner barrel, the postwelding string stress is very easily with the drawing crack of copper steel junction.Therefore, the welding quality that how to improve copper inner barrel and steel flange dish is significant to the manufacturing of crystallizer, especially large-scale crystallizer.
Summary of the invention
Technical problem to be solved in the utility model is: provide a kind of crystallizer for electroslag furnace, to solve the problem that is easy to generate big stress between copper, steel member in pre-thermo-welding, postwelding cooling when shrinking.
For solving the problems of the technologies described above, the technical solution of the utility model is: crystallizer for electroslag furnace comprises
Copper inner barrel; The outer cylinder body of steel; The ring flange of steel; The transition rings of steel, described transition rings are welded between the inner peripheral surface of the end periphery of described inner barrel and ring flange; Described inner barrel, outer cylinder body, transition rings and ring flange have surrounded an airtight cooling water cavity jointly.
After having adopted technique scheme, the beneficial effects of the utility model are: because described transition rings is welded between the inner peripheral surface of the end periphery of described inner barrel and ring flange, therefore, during fabrication, can be earlier under preheat mode, the transition rings of steel is welded on the end of copper inner barrel.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 the especially large-scale slag hearth crystallizer of crystallizer for electroslag furnace.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Accompanying drawing is the decomposition texture synoptic diagram of the utility model embodiment in manufacturing processed;
Among the figure: 1, ring flange; 2, transition rings; 3, inner barrel; 4, outer cylinder body.
Embodiment
As shown in drawings, a kind of crystallizer for electroslag furnace, it comprises the outer cylinder body 4 of copper inner barrel 3, steel, the ring flange 1 of steel and the transition rings 2 of steel, described transition rings 2 is welded between the inner peripheral surface of the end periphery of described inner barrel 3 and ring flange 1; Described inner barrel 3, outer cylinder body 4, transition rings 2 and ring flange 1 have surrounded an airtight cooling water cavity jointly.Accompanying drawing is the structure sectional view of the utility model embodiment in manufacturing processed.
During manufacturing, under preheat mode, transition rings 2 is welded on the end periphery of inner barrel 3 earlier, and then ring flange 1 and transition rings 2 are welded together under cold state, at last outer cylinder body 4 is welded on the end face of ring flange 1.
With 240t ingot crystallizer is example: the cover diameter is D=3050mm in the copper, thickness is 40mm, and the difference of Heating temperature and room temperature is about 970 ℃, and transition rings thickness is 22mm, linear expansivity according to copper, steel, in the time of can calculating by condition of high temperature cool to room temperature, the change in radius of cover is 25mm in the copper, and the change in radius of transition rings is 18mm, because transition rings thickness is less, can shrink relatively under the pulling force effect of weld seam in the cooling contraction process, the stress of generation is little, thereby guarantees that weld seam does not produce slight crack.
By such structure, solved the problem that produces big stress between copper, steel large-scale component in pre-thermo-welding, postwelding cooling when shrinking effectively, guaranteed welding quality, this technology is significant for the manufacturing of large-scale crystallizer.
Claims (1)
1. be convenient to reduce the crystallizer for electroslag furnace of welding stress between copper, steel member, comprise
Copper inner barrel;
The outer cylinder body of steel;
The ring flange of steel; It is characterized in that:
Described crystallizer also comprises the transition rings of steel, and described transition rings is welded between the inner peripheral surface of the end periphery of described inner barrel and ring flange;
Described inner barrel, outer cylinder body, transition rings and ring flange have surrounded an airtight cooling water cavity jointly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200261519U CN201538804U (en) | 2009-05-26 | 2009-05-26 | Electric slag furnace crystallizer convenient to reduce welding stress between copper members or steel members |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200261519U CN201538804U (en) | 2009-05-26 | 2009-05-26 | Electric slag furnace crystallizer convenient to reduce welding stress between copper members or steel members |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201538804U true CN201538804U (en) | 2010-08-04 |
Family
ID=42590257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200261519U Expired - Fee Related CN201538804U (en) | 2009-05-26 | 2009-05-26 | Electric slag furnace crystallizer convenient to reduce welding stress between copper members or steel members |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201538804U (en) |
-
2009
- 2009-05-26 CN CN2009200261519U patent/CN201538804U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20100804 Termination date: 20130526 |