CN202380032U - Solid calcium metal cored wire for steel making - Google Patents
Solid calcium metal cored wire for steel making Download PDFInfo
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- CN202380032U CN202380032U CN2011205064622U CN201120506462U CN202380032U CN 202380032 U CN202380032 U CN 202380032U CN 2011205064622 U CN2011205064622 U CN 2011205064622U CN 201120506462 U CN201120506462 U CN 201120506462U CN 202380032 U CN202380032 U CN 202380032U
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- spun yarn
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Abstract
A solid calcium metal cored wire for steel making comprises an inner layer core material and an outer wrapper and is characterized in that the outer wrapper is formed by reeling a strip-shaped steel strip; and the inner layer core material is a solid calcium metal material for steel making, is 5 to 10 mm in diameter and is a calcium metal wire. When the solid calcium metal cored wire with the unique structure is used for titanium treatment of liquid steel, a low-nitrogen ferrotitanium wire material directly enters an extruder after being heated by a heat penetration furnace and is continuously extruded into a solid core wire material, and the solid core wire material is directly wrapped in the steel strip through a cored wire machine to form the solid cored wire, so as to ensure that the low-nitrogen ferrotitanium wire material is in contact with air for a short time and is free of oxidation and pulverization.
Description
Technical field
The utility model relates to technical field of steelmaking and refining, is specifically related to a kind of real core metal calcium core-spun yarn of using in the liquid steel refining treating processes.
Technical background
It is with injection metallurgical method or injection feeding technology calcium metal or alloy to be added the molten steel deep that molten steel calcium is handled, and reaches deoxidation, desulfurization, makes the furnace outer refining technology of metallurgical effects such as nonmetal inclusion sex change.
Because the fusing point low (828 ℃) of calcium metal, boiling point also low (145 ℃), the solubleness in molten steel very little (when 1600 ℃, calcium vp are 0.03% during for 0.186Mpa), the also very little (1.55g/cm of the density of calcium
3), float on adding in the molten steel very easily on the slag surface with airborne oxygen and slag liquid in the oxide compound reaction and scaling loss is fallen.So (wherein the mass percentage content of Ca is about 30% for the cored-wire of general use containing metal calcium such as CaSi cored-wire (the mass percentage content 28-32% of Ca) or CaFe cored-wire; The mass percentage content of Fe is about 70%); And to be added to the molten metal deep when handling as far as possible; Utilize the static pressure of molten metal, make calcium become before the calcium bubble promptly with steel in oxygen, sulphur etc. react, be unlikely to become this bubble floating and lose once adding.
However, the yield of calcium metal still only has about 7-18%, and a large amount of calcium metals have been wasted all meaninglessly.
Existing cored-wire is formed by band shape steel band winding powdered alloy usually.Difference according to powdered alloy can be divided into silico-calcium cored-wire, silicomanganese calcium core-spun yarn, silico-calcium barium cored-wire, aluminium calcium line, calcium iron wire, pure calcium line etc.And after the cored-wire of being made up of pulvis (silicon calcium powder or calcium metal, iron powder) gets into ladle; Softening under action of high temperature; Even higher feeding wire speed; Cored-wire also can't penetrate high-temperature molten steel and get into the deep, is positioned at molten steel top mostly, is easy to form this bubble floating to the slag surface and scaling loss is fallen.In addition, in the past low-nitrogen ferrotitanium line material exists the line material to be prone to oxidation, is prone to the atomizing problem.
The utility model content
For solveing the technical problem; The purpose of the utility model is; Provide a kind of steel-making with real core metal calcium core-spun yarn, said steel-making can effectively be controlled the content of impurity elements such as nitrogen, aluminium, silicon, carbon, phosphorus, sulphur with real core metal calcium core-spun yarn, and the cored-wire of calcium yield can effectively be provided again.The particular structure of the utility model makes when being used for the processing of molten steel titanium; Said solid wire material directly gets into extrusion machine by calcium pump through diathermic furnace heating back; Continuously extruded one-tenth solid wire material; Become cored-wire through the direct winding of cored-wire machine and steel band, guarantee that real core calcium line material and air duration of contact are short, make the not oxidation of line material, not efflorescence.
The utility model technical scheme is following.
A kind of steel-making is with real core metal calcium core-spun yarn; Constitute by nexine core material and exoperidium; It is characterized in that said exoperidium is formed by the winding of band shape steel band, said exoperidium is formed by the winding of band shape steel band; Said nexine core material be the circular steel-making in cross section with real core metal calcium material, the diameter of said nexine core material is 5-10mm.
Said steel-making directly gets into extrusion machine by calcium pump through diathermic furnace heating back with real core metal calcium material; Continuously extruded one-tenth solid wire material; Become cored-wire through the direct winding of cored-wire machine and steel band, guarantee that real core calcium line material and air duration of contact are short, make the not oxidation of line material, not efflorescence.
Further this as the present technique scheme advances, and said nexine core material is the metal calcium line.
Problem to existing calcium processing core cabling wire exists adopts real core metal calcium core-spun yarn, can make molten steel calcium highly-efficient treatment, and is stable.
As the further improvement of present technique scheme, the diameter of said nexine core material is 5-10mm.
As the further improvement of present technique scheme, the diameter of said nexine core material is 7mm.
A kind of real core calcium material cored-wire according to the utility model is characterized in that said steel-making uses the diameter of real core metal calcium core-spun yarn to be 13-16mm.
In addition, with real core metal calcium core-spun yarn, it is characterized in that the thickness of strips of said cold-rolled steel strip is 0.25-0.8mm according to a kind of steel-making of the utility model.
With real core metal calcium core-spun yarn, it is characterized in that the thickness of strips of said cold-rolled steel strip is 0.42-0.5mm according to a kind of steel-making of the utility model.
, it is characterized in that with real core metal calcium core-spun yarn according to a kind of steel-making of the utility model, form to laminate back bending form package as the steel band of the said cold-rolled steel strip of exoperidium.
The utility model is made the method for above-mentioned cored-wire; This described real core metal calcium core-spun yarn is such processing and manufacturing, at first the metal calcium pump is processed into calcium line, on the cored-wire machine, will roll good calcium line with steel band and directly closely be rolled into line then, and the coil of wire becomes the web-like finished product the most at last.
The steel-making of the employing technique scheme that the utility model provides is with real core metal calcium core-spun yarn, and this cored-wire is made up of nexine core material and exoperidium, and exoperidium adopts the low-carbon cold rolling steel band, and the nexine virgin material then is the metal calcium line.Its particular structure makes when being used for the processing of molten steel calcium; This cored-wire penetrates the ability grow of molten steel in the line feeding process; The yield of calcium metal increases substantially; And broken string and the card line phenomenon that can avoid the line feeding process to be prone to have solved the problem of " pulvis weight is inhomogeneous, uneven components " of existing pulvis cored-wire existence.
Following according to the described a kind of steel-making of utility model with real core metal calcium core-spun yarn method of manufacture:
1, selects the metal calcium pump of diameter of phi 115mm * 500mm for use, calcium pump is heated to certain temperature through diathermic furnace.
2, with the calcium pump that the heats input extrusion machine of coming out of the stove, according to different size, continuity squeezes out the metal calcium line of 7-8mm.
The pure calcium line that 3, will be squeezed into line is directly reeled through cored-wire machine and cold-rolled steel strip and is formed real core metal calcium core-spun yarn.
The described a kind of steel-making of the utility model is with real core metal calcium core-spun yarn method of manufacture, and its novelty is, guarantees that real core calcium line material and the air extruded are short duration of contact, makes the not oxidation of line material, not efflorescence.Guarantee calcareous purity and the yield that improves calcium.
Description of drawings
Fig. 1 is the described a kind of real core metal calcium core-spun yarn sectional view of utility model.
Among the figure, 1 is real core metal calcium material, the exoperidium that 2 serve as reasons is with the winding of shape steel band to form.
Embodiment
Embodiment 1
This cored-wire is made up of exoperidium and core.Exoperidium is the SPHC cold-rolled steel strip of thickness 0.5mm, and wire core diameter is the metal calcium line of 7mm.The specifications parameter that real core metal calcium core-spun yarn is relevant is following:
Cored-wire external diameter: 8 ± 0.5mm
Calcium metal core diameter: 7 ± 0.1mm
Thickness of strips: 0.5mm
Every meter calcium core weight: 59 ± 2 grams
Every meter steel band weight: 140 ± 5 grams
Volume is heavy: 1.6 tons
Every spiral is long: 8000 meters
Coil of wire size: internal diameter 750mm, external diameter 1180mm, height 1000mm
Wire-feeding velocity: 110 meters/minute
Line feeding amount: 200 meters/stove
The result: the average yield of calcium metal is 24.37%, is higher than the average yield of former before this silico-calcium cored-wire 15.92%.
Embodiment 2
This cored-wire is that the 08A1 cold-rolled steel strip of 0.42mm and metal calcium line that wire core diameter is 7.5mm constitute by exoperidium thickness.The specifications parameter that real core metal calcium core-spun yarn is relevant is following:
Cored-wire external diameter: 10 ± 0.5mm
Calcium metal core diameter: 7.5 ± 0.1mm
Thickness of strips: 0.42mm
Every meter calcium core weight: 66 ± 2 grams
Every meter steel band weight: 140 ± 5 grams
Volume is heavy: 1.8 tons
Every spiral is long: 9000 meters
Coil of wire size: internal diameter 750mm, external diameter 1200mm, height 1000mm
Feed the stove mode: at RH refining station, steel grade is B480
Wire-feeding velocity: 120 meters/minute
Line feeding amount: 310 meters/stove
The result: the average yield of calcium metal is 19.37%, is higher than the average yield of protocalcium iron cored-wire 10.12% before this.And the line feeding of real core metal calcium core-spun yarn is steady, the phenomenon of broken string do not occur.
The real core metal calcium core-spun yarn that the utility model provides is to adopt the core material of metal calcium line as cored-wire, adopts the high-quality mild-carbon steel strip as foreskin, is made into real core metal calcium core-spun yarn with steel band and the moulding of metal rerouted package.Have following two characteristics:
1) real core metal calcium core-spun yarn is an outer steel shell; The special construction of the real core metal calcium line of nexine makes the hot strength of cored-wire improve greatly, has greatly improved the penetrativity of cored-wire; Make calcium metal can join the molten steel deep veritably; Utilize the static pressure of molten steel, make calcium metal, improve the calcium metal yield greatly becoming before the calcium bubble promptly and reactions such as steel water oxygen, sulphur;
2) calcium metal is real cored structure in the real core metal calcium core-spun yarn; Compare with the cored-wire of grain packing; Because the specific surface area of calcium metal is dwindled greatly; Therefore reduced the gasification rate of calcium metal, increased the time that calcium metal is absorbed by molten steel, thereby can obtain the higher recovery and stable at molten steel.
With real core metal calcium core-spun yarn method of manufacture, its novelty is according to the described a kind of steel-making of the utility model, guarantees that real core calcium line material and the air extruded are short duration of contact, makes the not oxidation of line material, not efflorescence.Guarantee calcareous purity and the yield that improves calcium.
Claims (8)
1. a steel-making is with real core metal calcium core-spun yarn; Constitute by nexine core material and exoperidium; It is characterized in that said exoperidium is formed by the winding of band shape steel band, said exoperidium is formed by the winding of band shape steel band; Said nexine core material be the circular steel-making in cross section with real core metal calcium material, the diameter of said nexine core material is 5-10mm.
2. a kind of steel-making as claimed in claim 1 is characterized in that with real core metal calcium core-spun yarn said nexine core material is the metal calcium line.
3. a kind of steel-making as claimed in claim 1 is characterized in that with real core metal calcium core-spun yarn the diameter of said nexine core material is 5-10mm.
4. a kind of steel-making as claimed in claim 2 is characterized in that with real core metal calcium core-spun yarn the diameter of said nexine core material is 7mm.
5. a kind of steel-making as claimed in claim 2 is characterized in that with real core metal calcium core-spun yarn said steel-making uses the diameter of real core metal calcium core-spun yarn to be 13-16mm.
6. a kind of steel-making as claimed in claim 2 is characterized in that with real core metal calcium core-spun yarn the thickness of strips of said cold-rolled steel strip is 0.25-0.8mm.
7. a kind of steel-making as claimed in claim 2 is characterized in that with real core metal calcium core-spun yarn the thickness of strips of said cold-rolled steel strip is 0.42-0.5mm.
8. a kind of steel-making as claimed in claim 2 is characterized in that with real core metal calcium core-spun yarn the steel band that is used as the said cold-rolled steel strip of exoperidium forms to laminate back bending form package.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205064622U CN202380032U (en) | 2011-12-07 | 2011-12-07 | Solid calcium metal cored wire for steel making |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205064622U CN202380032U (en) | 2011-12-07 | 2011-12-07 | Solid calcium metal cored wire for steel making |
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| Publication Number | Publication Date |
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| CN202380032U true CN202380032U (en) | 2012-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011205064622U Expired - Fee Related CN202380032U (en) | 2011-12-07 | 2011-12-07 | Solid calcium metal cored wire for steel making |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103555884A (en) * | 2013-11-12 | 2014-02-05 | 莱芜钢铁集团有限公司 | Calcium cored wire and method for calcium treatment on molten steel through calcium cored wire |
| CN104046724A (en) * | 2013-12-06 | 2014-09-17 | 攀钢集团攀枝花钢铁研究院有限公司 | Cored wire, its application, vanadium and nitrogen alloyed molten steel, preparation method of vanadium and nitrogen alloyed molten steel, and vanadium and nitrogen micro-alloyed steel |
| CN106086310A (en) * | 2016-08-24 | 2016-11-09 | 北京首钢铁合金有限公司 | A kind of seamless pure calcium line and preparation method thereof |
-
2011
- 2011-12-07 CN CN2011205064622U patent/CN202380032U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103555884A (en) * | 2013-11-12 | 2014-02-05 | 莱芜钢铁集团有限公司 | Calcium cored wire and method for calcium treatment on molten steel through calcium cored wire |
| CN103555884B (en) * | 2013-11-12 | 2016-03-23 | 莱芜钢铁集团有限公司 | Calcium core-spun yarn and this calcium core-spun yarn of use carry out the method for Calcium treatment to molten steel |
| CN104046724A (en) * | 2013-12-06 | 2014-09-17 | 攀钢集团攀枝花钢铁研究院有限公司 | Cored wire, its application, vanadium and nitrogen alloyed molten steel, preparation method of vanadium and nitrogen alloyed molten steel, and vanadium and nitrogen micro-alloyed steel |
| CN106086310A (en) * | 2016-08-24 | 2016-11-09 | 北京首钢铁合金有限公司 | A kind of seamless pure calcium line and preparation 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: 20120815 Termination date: 20191207 |
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| CF01 | Termination of patent right due to non-payment of annual fee |