CN202415601U - Steel-making solid calcium line composite cored wire - Google Patents
Steel-making solid calcium line composite cored wire Download PDFInfo
- Publication number
- CN202415601U CN202415601U CN 201220149232 CN201220149232U CN202415601U CN 202415601 U CN202415601 U CN 202415601U CN 201220149232 CN201220149232 CN 201220149232 CN 201220149232 U CN201220149232 U CN 201220149232U CN 202415601 U CN202415601 U CN 202415601U
- Authority
- CN
- China
- Prior art keywords
- calcium
- steel
- core
- metal
- wire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0056—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 using cored wires
Abstract
The utility model discloses a steel-making solid calcium line composite cored wire. The cored wire consists of an inner core material and an outer wrapper; the outer wrapper is formed by wrapping a steel strip; and the inner core material comprises a steel-making solid metal calcium line and/or alloy granule powder. When the cored wire is used for treating calcium in molten steel, the metal and/or the alloy granule powder are introduced; and due to the introduction of the powder, the molten steel is locally cooled, and the dissolvability of the calcium in the molten steel is improved, so that the yield of the calcium in the molten steel is further improved, and nitrogen absorption of the molten steel is greatly reduced.
Description
Technical field
The utility model relates to technical field of steelmaking and refining, is specifically related to a kind of real core calcium line composite core-spun yarn of using in the liquid steel refining treating processes.
Background technology
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.
In addition, 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.
For improving the yield of calcium treating processes calcium metal, publication number proposes a kind of real core metal calcium core-spun yarn for applying for a patent of " CN101942542A ", and it is formed by real core metal calcium line of nexine and outer steel band parcel.This cored-wire is because calcium metal is a solid wire, and gasification rate is slow, and special real cored structure, and it is strong to penetrate the molten steel ability, and the yield of calcium metal increases substantially, and is applied in many steel mills at present.But the problem that this cored-wire in use exists is, molten steel seethes seriously, and molten steel calcium treating processes increases N serious (molten steel increase N reach 15-30ppm) usually, and easy splash causes security incident.
The utility model content
For solveing the technical problem, the purpose of the utility model is, provides a kind of steel-making with real core calcium line composite core-spun yarn, and said steel-making can effectively improve the calcium yield by reducing the cored-wire that molten steel increases N significantly with real core calcium line composite core-spun yarn.
In addition, the utility model is effectively controlled the content of impurity elements such as nitrogen, aluminium, silicon, carbon, phosphorus, sulphur, 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.
For achieving the above object, the technical scheme of the utility model is following.
A kind of steel-making is with real core calcium line composite 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 nexine core material comprises metal calcium line and metal and/or alloying pellet powder; The diameter of said metal calcium line is 3-8mm, said cored-wire diameter 5-16mm.
With real core calcium line composite core-spun yarn, it is characterized in that the diameter 4-7mm of said metal calcium line, said cored-wire diameter 10-13mm according to the described a kind of steel-making of the utility model.
With real core calcium line composite core-spun yarn, it is characterized in that according to the described a kind of steel-making of the utility model said metal and/or alloying pellet powder surround the metal calcium line that is positioned at the cored-wire middle.
According to the described cored-wire of the utility model, it is characterized in that the particle powder particle size of said metal and/or alloying pellet powder is 0.1-3mm.
According to the described cored-wire of the utility model, it is characterized in that the particle powder particle size of said metal and/or alloying pellet powder is 1-1.5mm.
According to the described cored-wire of the utility model, it is characterized in that said cold-rolled steel strip thickness is 0.25-1.0mm.
With real core calcium line composite core-spun yarn, it is characterized in that according to the described a kind of steel-making of the utility model the thickness of strips of said cold-rolled steel strip is 0.42-0.5mm.
With real core calcium line composite core-spun yarn, it is characterized in that according to the described a kind of steel-making of the utility model the steel band that is used as the said cold-rolled steel strip of exoperidium forms to laminate back bending form package.
According to the utility model; The weight percent of said metal calcium line calcium metal content is 95-99.9%, and said metal and/or alloying pellet powder are selected from one or more of metallic silicon power, metallic aluminium powder, metal iron powder, ferro-silicon alloy powder, high purity ferrosilicon alloy powder, Si-Ba alloy powder, rare earth alloy powder.
With real core calcium line composite core-spun yarn, the carbonaceous weight percent of said cold-rolled steel strip is not more than 0.15% according to the described a kind of steel-making of the utility model.
Following according to the described a kind of steel-making of utility model with real core calcium line composite 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.
3, calcium metal is processed into the metal calcium line, Pure Silicon Metal (or aluminium, iron) or ferrosilicon (or high purity ferrosilicon, silicon barium, rare earth ferrosilicon) alloy is processed into 0-3mm particle powder, then
4, on the cored-wire machine, will roll good calcium line and metal and/or alloying pellet powder with steel band and directly closely be rolled into line, be rolled into the web-like finished product.
The steel-making of the employing technique scheme that provides according to the utility model is with real core calcium line composite 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
Real core calcium line composite core-spun yarn according to employing technique scheme provided by the invention; This cored-wire is made up of nexine core material and outer foreskin; Exoperidium adopts the low-carbon cold rolling steel band, and the nexine core material then is metal calcium line and metal and/or the compound composition of alloying pellet powder.Both had stronger molten steel penetrativity; Metal and/or alloying pellet powder have been brought again simultaneously into; Both bringing into of these particle powders lowered the temperature to local molten steel, improved the solubleness of calcium at molten steel again, makes molten steel suction N reduce significantly with the calcium yield and further improves.
Description of drawings
Fig. 1 is the described a kind of real core calcium line composite core-spun yarn sectional view of utility model.
Fig. 2 is the composite core-spun yarn sectional view of the another kind of embodiment of the utility model.
Among the figure, 1 is the metal calcium line, and 2 is exoperidium, and 3 is metal and/or alloying pellet powder.
Embodiment
Embodiment 1
As shown in Figure 1, this cored-wire comprises the exoperidium 2 and nexine core material that is formed by the winding of band shape steel band, and exoperidium is that thickness is the SPCC cold-rolled steel strip of 0.46mm, and the nexine core material is real core metal calcium line 1 of diameter 5.8mm and ferro-silicon alloy powder 3 compound compositions.The specifications parameter that real core calcium line composite core-spun yarn is relevant is following:
Cored-wire external diameter: 10 ± 0.5mm
Thickness of strips: 0.46mm
Calcium metal linear diameter: 5.8mm
Every meter ferro-silicon alloy powder weight: 85 grams
Every volume weight: 2.3 tons
The feeding mode: feeding when the RH refining finishes, steel grade is AH36
Wire-feeding velocity: 180 meters/minute
Feed quantity: 350 meters/stove
The result: the average yield of calcium metal is 32.3%, and molten steel increases N5.3ppm.When using real core metal calcium core-spun yarn before this, average calcium yield is 24.1%, on average increases N16.8ppm.
This cored-wire is made up of exoperidium 2 and nexine core material; Exoperidium 2 is the 08Al cold-rolled steel strip of 0.42mm for thickness; The nexine core material is diameter 6.0mm metal calcium line 1 and metallic aluminium powder 3 compound compositions, and as shown in Figure 2, the metal calcium line is wrapped in the middle of metallic aluminium powder.The specifications parameter that real core calcium line composite core-spun yarn is relevant is following:
Cored-wire external diameter: 13 ± 0.5mm
Thickness of strips: 0.42mm
Calcium metal linear diameter: 6.0mm
Every meter aluminium powder weight: 110 gram/rice
Every volume weight: 2.4 tons
The feeding mode: feeding when the RH refining finishes, steel grade is B480
Wire-feeding velocity: 160 meters/minute
Feed quantity: 320 meters/stove
The result: the average yield of calcium metal is 30.4%, is higher than real core metal calcium core-spun yarn 19.4% average yield, and molten steel increases N4.8ppm, and 14.2ppm on average increases the N amount when using real core metal calcium core-spun yarn.Calcium treating processes molten steel does not steadily have splash.
This cored-wire is made up of exoperidium 2 and nexine core material, and exoperidium 2 is the SPCC cold-rolled steel strip of 0.5mm for thickness, and the nexine core material is diameter 5.0mm metal calcium line 1 and metal iron powder 3 compound compositions.The specifications parameter that real core calcium line composite core-spun yarn is relevant is following:
Cored-wire external diameter: 10 ± 0.5mm
Thickness of strips: 0.5mm
Calcium metal linear diameter: 5.0mm
Every meter iron powder weight: 115 grams
Every volume weight: 2.3 tons
Feeding mode: LF refining furnace feeding in latter stage
Wire-feeding velocity: 180 meters/minute
Feed quantity: 380 meters/stove
The result: the average yield of calcium metal is 29.4%, is higher than real core metal calcium core-spun yarn 21.8% average yield, and molten steel increases N6.8ppm, and 17.2ppm on average increases the N amount when using real core metal calcium core-spun yarn.Calcium treating processes molten steel does not steadily have splash.
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 calcium line composite 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 4
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 calcium line composite 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 calcium line composite core-spun yarn is steady, the phenomenon of broken string do not occur.
According to the utility model, have following characteristics:
1) real core calcium line composite 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 calcium line composite 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.
3) in the time of molten steel feeding calcium metal, brought metal and/or alloying pellet powder into, made and local molten steel cooling reduced the calcium metal gasification, both improved the calcium metal yield, reduced molten steel again and seethe and inhale N.
4) elements such as the Si that brings into of real core calcium line composite core-spun yarn, Al, Ba have improved the solubleness of calcium in the molten steel, further improve the calcium metal yield, also reduce the gasification of calcium, reduce molten steel and inhale N.
Claims (8)
1. a steel-making is with real core calcium line composite 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 cold-rolled steel strip, said nexine core material comprises metal calcium line and metallic particles powder; The diameter of said metal calcium line is 3-8mm, said cored-wire diameter 5-16mm.
2. a kind of steel-making as claimed in claim 1 is characterized in that with real core calcium line composite core-spun yarn, the diameter 4-7mm of said metal calcium line, said cored-wire diameter 10-13mm.
3. a kind of steel-making as claimed in claim 1 is characterized in that with real core calcium line composite core-spun yarn said metallic particles powder surrounds the metal calcium line that is positioned at the cored-wire middle.
4. cored-wire as claimed in claim 1 is characterized in that, the particle diameter of said metallic particles powder is 0.1-3mm.
5. according to the described cored-wire of claim 4, it is characterized in that the particle diameter of said metallic particles powder is 1-1.5mm.
6. cored-wire according to claim 1 is characterized in that, said cold-rolled steel strip thickness is 0.25-1.0mm.
7. a kind of steel-making as claimed in claim 1 is characterized in that with real core calcium line composite 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 1 is characterized in that with real core calcium line composite 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 |
|---|---|---|---|
| CN 201220149232 CN202415601U (en) | 2012-04-10 | 2012-04-10 | Steel-making solid calcium line composite cored wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220149232 CN202415601U (en) | 2012-04-10 | 2012-04-10 | Steel-making solid calcium line composite cored wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202415601U true CN202415601U (en) | 2012-09-05 |
Family
ID=46740381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220149232 Expired - Fee Related CN202415601U (en) | 2012-04-10 | 2012-04-10 | Steel-making solid calcium line composite cored wire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202415601U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102851446A (en) * | 2012-09-10 | 2013-01-02 | 上海盛宝冶金科技有限公司 | Multilayer-structured calcium-core wire, and manufacturing method and purpose thereof |
| CN108728608A (en) * | 2018-06-11 | 2018-11-02 | 张青松 | A kind of core-spun yarn and its manufacturing method for desulfurizing iron |
-
2012
- 2012-04-10 CN CN 201220149232 patent/CN202415601U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102851446A (en) * | 2012-09-10 | 2013-01-02 | 上海盛宝冶金科技有限公司 | Multilayer-structured calcium-core wire, and manufacturing method and purpose thereof |
| CN108728608A (en) * | 2018-06-11 | 2018-11-02 | 张青松 | A kind of core-spun yarn and its manufacturing method for desulfurizing iron |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101942542A (en) | Cored wire and manufacturing method thereof | |
| CN102206732B (en) | Solid-core passivated pure calcium cored wire and manufacturing method thereof | |
| CN102586542A (en) | Metal calcium core composite cored wire and preparation method thereof | |
| CN103740883B (en) | Deoxidation method of plain carbon steel | |
| CN113106197A (en) | Rare earth Al-Ca-Si-Fe composite alloy for steelmaking | |
| CN101921893A (en) | Solid calcium metal cored wire for deoxidation in steel making | |
| CN102827997A (en) | Calcium carbide ferro-aluminium alloy used for smelting steel, and preparation method thereof | |
| CN202415601U (en) | Steel-making solid calcium line composite cored wire | |
| CN202380032U (en) | Solid calcium metal cored wire for steel making | |
| CN101381794A (en) | Calcium-aluminium core cabling wire | |
| CN101487074B (en) | Calcium processing core cabling wire for producing stainless steel | |
| CN202090014U (en) | Solid-core passivated pure calcium core-spun yarn | |
| CN210314342U (en) | Double-layer magnesium core nodulizer core-spun yarn | |
| CN103741020A (en) | Preparation method of magnesium-aluminum-iron alloy for desulfurizing and deoxidizing agent | |
| CN103981332B (en) | A kind of aluminium barium line and production technique thereof | |
| CN111139336A (en) | Deoxidized alloy cored wire for improving welding performance of steel and manufacturing method thereof | |
| CN103924146B (en) | Titaniferous cored-wire and application thereof and Ti Alloying molten steel and preparation method thereof and a kind of titaniferous steel alloy | |
| CN106086306A (en) | A kind of high magnesium core-spun yarn and preparation method thereof | |
| CN108018399A (en) | A kind of deoxidation in steel making seamless high calcium coated thread and preparation method thereof | |
| CN103540710B (en) | Steel-making magnesium base complex deoxidization alloy and deoxidation in steel making method | |
| CN202830076U (en) | Pure-calcium wire composite cored wire | |
| CN103924035A (en) | Titanium-aluminum core-spun yarn and application thereof, titanium alloying molten steel and preparation method thereof, and titanium-containing alloy steel | |
| CN102618696A (en) | Composite calcium metal wire cored wire for steelmaking deoxygenation and production method thereof | |
| CN103911481B (en) | Titanium calcium silicon cored-wire and application thereof and Ti Alloying molten steel and preparation method thereof and a kind of titaniferous steel alloy | |
| CN103924036A (en) | Titanium-containing core-spun yarn and application thereof, titanium alloying molten steel and preparation method thereof, and titanium-containing alloy steel |
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: 20120905 Termination date: 20190410 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |