CN202849477U - Pure calcium core-spun wire for steel-making - Google Patents
Pure calcium core-spun wire for steel-making Download PDFInfo
- Publication number
- CN202849477U CN202849477U CN 201220424917 CN201220424917U CN202849477U CN 202849477 U CN202849477 U CN 202849477U CN 201220424917 CN201220424917 CN 201220424917 CN 201220424917 U CN201220424917 U CN 201220424917U CN 202849477 U CN202849477 U CN 202849477U
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- steel
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- pure calcium
- calcium
- making
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Abstract
The utility model discloses a pure calcium core-spun wire for steel-making and belongs to core-spun wires. A structure of the pure calcium core-spun wire for steel-making comprises an outer coating layer and a coating core body coated in the outer coating layer, wherein a vertical ridge is arranged on a surface of the outer coating layer, the vertical ridge is perpendicular to a circular section tangent of the outer coating layer, and the thickness of the outer coating layer is 0.75-2.0mm. Compared with the prior art, the pure calcium core-spun wire for steel-making has greatly improved penetrability for penetrating steel slag, and is capable of decreasing the deformation amount of the pure calcium core-spun wire after penetrating the steel slag to ensure that the pure calcium core-spun wire can reach the bottom of a steel ladle in a better way, prolonging time of absorbing a metal calcium strip by molten steel, reducing formation of calcium bubbles, reducing calcium splashed to the surface of the molten steel, and improving the calcium yield, thus the pure calcium core-spun wire for steel-making has excellent popularization and application value.
Description
Technical field
The utility model relates to a kind of cored-wire, the high strength of using in especially a kind of iron and steel enterprise external refining process, the pure calcium core-spun yarn of high recovery rate steel-making.
Background technology
Cored wire technology has become a kind of indispensable refining means on the Steel industry now, and it has unique effect to the fine setting of molten steel, alloying, deoxidation, removal of inclusions etc., and has the advantages such as less investment, technique are simple.The various external refining novel procesies of active development have been general trend and the technology main goal of attack of world's steel-smelting technology development.
Removal and the metamorphosis of the alloying of steel, the fine setting of element, inclusion, the removal of gas etc. improves the task of Steel Clearness and steel quality in the steel, mostly relies on external refining (ladle metallurgy) to finish.
The employed Laos used coating thickness of the pure calcium core-spun yarn of limit formula is 0.45mm～0.60mm in the metal current smelting process, this type of pure calcium core-spun yarn in use, because coating thinner thickness, in feeding molten steel process, thoroughly the slag ability a little less than, easily cause pure calcium core-spun yarn to bend, the coating thinner thickness easily melts simultaneously, can better not be inserted into the ladle bottom, cause the calcium metal bar of interior coating to react in the molten steel middle and upper part, be easy to form the calcium bubble floating to the slag surface, the recovery rate of calcium metal only has about 7～15%, causes the waste of calcium metal.Also exist simultaneously big for environment pollutionly, splash is serious, easily scalds the shortcomings such as operator.At present, good solution is not also arranged.
The utility model content
Technical assignment of the present utility model is to provide a kind of steel-making pure calcium core-spun yarn for above-mentioned deficiency of the prior art, this is a kind of makes steel and has the penetrativity that penetrates slag with pure calcium core-spun yarn and greatly increase, can reduce the deflection after pure calcium core-spun yarn is worn slag, can better arrive ladle bottom, increased the calcium metal bar by the molten steel soak time, reduce the formation of calcium bubble, can obviously reduce calcium in the splash of molten steel surface, thereby improve the characteristics of the recovery rate of calcium.
The technical scheme that its technical problem that solves the utility model adopts is: it comprises coating and is coated on the interior coating core body of coating, described coating surface is provided with vertical rib, described vertical rib is perpendicular to coating circular section tangent line, and described coating thickness is 0.75～2.0mm.
Described coating is the above cold-rolled steel strip of SPCC rank, and thickness is 1.2mm.
The thickness of described vertical rib is 3.6mm.
Described coating core body is real core metal calcium bar.
The diameter of described coating core body is 6.6mm.
A kind of steel-making of the present utility model is compared with existing technology with pure calcium core-spun yarn, has following outstanding beneficial effect: be provided with vertical vertical rib and the thicker steel band of outer cladding, greatly improved the intensity that coats core body, its penetrativity that penetrates slag increases greatly, can reduce the deflection after pure calcium core-spun yarn is worn slag, can better arrive ladle bottom, increased the calcium metal bar by the molten steel soak time, reduce the formation of calcium bubble, can obviously reduce calcium in the splash of molten steel surface, thereby improve the recovery rate of calcium, do not pollute the environment, can not scald operator, the average recovery rate of this coating core body is existing more than 3 times of the average recovery rate of cored-wire, and recovery rate can reach the characteristics such as 40%～60%.
Description of drawings
Accompanying drawing 1 is a kind of cross section structure synoptic diagram of making steel with pure calcium core-spun yarn;
Description of reference numerals: 1, coating, 2, coat core body, 3, vertical rib.
Embodiment
Explain below doing with pure calcium core-spun yarn with reference to 1 pair of a kind of steel-making of the present utility model of Figure of description.
The pure calcium core-spun yarn of a kind of steel-making of the present utility model, its structure comprises coating 1 and the coating core body 2 that is coated in the coating 1, described coating 1 surface is provided with vertical rib 3, described vertical rib 3 is perpendicular to coating 1 circular section tangent line, and described coating 1 thickness is 0.75～2.0mm.
Described coating 1 is the above cold-rolled steel strip of SPCC rank, and thickness is 1.2mm.
The thickness of described vertical rib 3 is 3.6mm.
Described coating core body 2 is real core metal calcium bar, purity 〉=97%.
The diameter of described coating core body 2 is 6.6mm.
After respectively organizing the Laos limit of pressure roller, curling, pressed sizing by core cabling wire machine, be that the coating 1 of 1.2mm is coated on outside the coating core body 2 that diameter is 6.6mm closely with thickness, the vertical rib 3 of stiffening web that is 3.6mm at coating 1 outer formation one thickness simultaneously, this vertical rib 3 is perpendicular to coating 1 circular section tangent line.Should be fed to the ladle bottom by pure calcium core-spun yarn, owing to there is vertical rib 3, increase the penetrativity that it penetrates slag, can reduce the deflection after pure calcium core-spun yarn is worn slag, make pure calcium core-spun yarn can better arrive ladle bottom, the calcium metal bar of interior coating can fully be reacted at ladle bottom, almost do not have splash at molten steel surface, the calcium recovery rate reaches 52%.
Except the described technical characterictic of specification sheets, be the known technology of those skilled in the art.
Claims (5)
1. pure calcium core-spun yarn of steel-making, comprise coating and be coated on the interior coating core body of coating, it is characterized in that: described coating surface is provided with vertical rib, and described vertical rib is perpendicular to coating circular section tangent line, and described coating thickness is 0.75～2.0mm.
2. the pure calcium core-spun yarn of a kind of steel-making according to claim 1, it is characterized in that: described coating is the above cold-rolled steel strip of SPCC rank, and thickness is 1.2mm.
3. the pure calcium core-spun yarn of a kind of steel-making according to claim 1, it is characterized in that: the thickness of described vertical rib is 3.6mm.
4. the pure calcium core-spun yarn of a kind of steel-making according to claim 1, it is characterized in that: described coating core body is real core metal calcium bar.
5. the pure calcium core-spun yarn of a kind of steel-making according to claim 1, it is characterized in that: the diameter of described coating core body is 6.6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220424917 CN202849477U (en) | 2012-08-24 | 2012-08-24 | Pure calcium core-spun wire for steel-making |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220424917 CN202849477U (en) | 2012-08-24 | 2012-08-24 | Pure calcium core-spun wire for steel-making |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202849477U true CN202849477U (en) | 2013-04-03 |
Family
ID=47980697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220424917 Expired - Fee Related CN202849477U (en) | 2012-08-24 | 2012-08-24 | Pure calcium core-spun wire for steel-making |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202849477U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102787208A (en) * | 2012-08-24 | 2012-11-21 | 济南钢铁集团总公司测温仪器厂 | Pure calcium cored wire for steelmaking |
-
2012
- 2012-08-24 CN CN 201220424917 patent/CN202849477U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102787208A (en) * | 2012-08-24 | 2012-11-21 | 济南钢铁集团总公司测温仪器厂 | Pure calcium cored wire for steelmaking |
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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: 20130403 Termination date: 20150824 |
|
| EXPY | Termination of patent right or utility model |