CN101942542A - Cored wire and manufacturing method thereof - Google Patents
Cored wire and manufacturing method thereof Download PDFInfo
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- CN101942542A CN101942542A CN 201010262758 CN201010262758A CN101942542A CN 101942542 A CN101942542 A CN 101942542A CN 201010262758 CN201010262758 CN 201010262758 CN 201010262758 A CN201010262758 A CN 201010262758A CN 101942542 A CN101942542 A CN 101942542A
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Abstract
The invention relates to a cored wire and a manufacturing method thereof. The cored wire consists of an inner core material and an outer coating, wherein the outer coating is formed by reeling a strip steel belt; the inner core material is a solid cored wire material, which can be a metal calcium wire; and when the cored wire is used for treating calcium of molten steel, the capability of penetrating molten steel of the cored wire becomes stronger in a wire feeding process, the yield of the metal calcium is greatly improved, so that the phenomena of easy wire breaking and jamming in the wire feeding process can be avoided, and the problems of nonuniform powder weight and nonuniform component existing in the conventional powdered cored wire are solved.
Description
Technical field
The present invention relates to technical field of steelmaking and refining, be specifically related to a kind of cored-wire and the manufacture method thereof used in the liquid steel refining calcium 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 (838 ℃) of calcium metal, boiling point also low (1450 ℃), the solubleness in molten steel very little (when 1600 ℃, calcium vapour pressure 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 (mass percentage content of Ca is 28%～32%) 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 before becoming the calcium bubble promptly with steel in oxygen, sulphur etc. react, be unlikely to become the calcium bubble floating and lose once adding.
However, the recovery rate 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 again: silico-calcium cored-wire, silicon-calcium wire, silicomanganese calcium line, silico-calcium barium line, silico-calcium, barium aluminum steel, aluminium calcium line, calcium iron wire, pure calcium line etc.And after entering ladle by the cored-wire that pulvis (silicon calcium powder or calcium metal, iron powder) is formed, softening under action of high temperature, even higher feeding wire speed, cored-wire also can't penetrate high-temperature molten steel and enter the deep, be positioned at the top of molten steel mostly, be easy to form the calcium bubble floating to the slag surface and scaling loss is fallen.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of cored-wire that can effectively improve the calcium recovery rate.
Its technical problem to be solved can be implemented by the following technical programs.
A kind of cored-wire is made of nexine core material and exoperidium, and described exoperidium is formed by the winding of band shape steel band, and described nexine core material is the solid wire material.
As the further improvement of the technical program, described nexine core material is the metal calcium line.Problem at 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 the technical program, the diameter of described nexine core material is 5---10mm; For example can be 7mm.
Also as the further improvement of the technical program, the weight percent of described metal calcium line calcium metal content is 95---99.9%.
Also as the further improvement of the technical program, described band shape steel band is a cold-rolled steel strip.
Wherein, described cold-rolled steel strip selects for use carbonaceous weight percent to be not more than 0.15% high-quality mild-carbon steel strip.
In addition, the thickness of strips of described cold-rolled steel strip can be 0.25---0.8mm, and preferred 0.42---0.5mm.
Another technical problem to be solved by this invention is to provide a kind of method of making above-mentioned cored-wire; This described real core metal calcium core-spun yarn is such processing and manufacturing, at first calcium metal is processed into calcium line, on the cored-wire machine, with steel band prefabricated calcium line closely is rolled into line then, and the coil of wire becomes the web-like finished product the most at last.
The real core metal calcium core-spun yarn of employing technique scheme provided by the invention, this cored-wire is made of nexine core material and exoperidium, and exoperidium adopts the low-carbon cold rolling steel band, and the nexine core 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 recovery rate of calcium metal increases substantially, and broken string and the card line phenomenon that can avoid the line feeding process to be prone to, solved the problem of " pulvis weight is inhomogeneous, uneven components " of existing pulvis cored-wire existence.
Embodiment
Embodiment 1
This cored-wire is made up of crust and core.Crust is that thickness is the SPHC cold-rolled steel strip of 0.5mm, and core is the metal calcium line of diameter 7mm.The specifications parameter that real core metal calcium core-spun yarn is relevant is as follows:
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
The feeding mode: in the feeding in latter stage of LF refining furnace, steel grade is an AH36 slab steel grade;
Wire-feeding velocity: 110 meters/minute;
Line feeding amount: 200 meters/stove;
The result: the average recovery rate of calcium metal is 24.37%, is higher than the average recovery rate of former before this silico-calcium cored-wire 15.92%.
Embodiment 2
This cored-wire is that the 08Al cold-rolled steel strip of thickness 0.42mm and metal calcium line that core is diameter 7mm constitute by crust.The specifications parameter that real core metal calcium core-spun yarn is relevant is as follows:
Cored-wire external diameter: 10 ± 0.5mm
Calcium metal core diameter: 7 ± 0.1mm
Thickness of strips: 0.42mm
Every meter calcium core weight: 59 ± 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
The feeding 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 recovery rate of calcium metal is 19.37%, is higher than the average recovery rate 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 card line and broken string do not occur.
Real core metal calcium core-spun yarn provided by the invention is to adopt the metal calcium line as the core material of core-spun yarn, adopts the high-quality mild-carbon steel strip as foreskin, is rolled into type with steel band metal calcium line and is made into real core metal calcium core-spun yarn. Have following two each and every one characteristics:
1), real core metal calcium core-spun yarn is the special construction of outer steel shell, the real core metal calcium line of nexine, so that the elevated temperature strength of core-spun yarn improves greatly, greatly improved the penetration capacity of core-spun yarn, so that calcium metal can join the molten steel deep veritably, utilize the static pressure of molten steel, make calcium metal before becoming the calcium bubble namely with the reactions such as steel water oxygen, sulphur, greatly improve the calcium metal recovery rate;
2), calcium metal is real cored structure in the real core metal calcium core-spun yarn, compare with the calcium core-spun yarn of grain packing, because the specific area of calcium metal is dwindled greatly, therefore reduced the gasification rate of calcium metal, increase the time that calcium metal is absorbed by molten steel, thereby can obtain the higher rate of recovery and stable at molten steel.
Claims (10)
1. a cored-wire is made of nexine core material and exoperidium, and described exoperidium is formed by the winding of band shape steel band, it is characterized in that described nexine core material is the solid wire material.
2. cored-wire according to claim 1 is characterized in that, described nexine core material is the metal calcium line.
3. cored-wire according to claim 1 and 2 is characterized in that, the diameter of described nexine core material is 5---10mm.
4. cored-wire according to claim 3 is characterized in that, the diameter of described nexine core material is 7mm.
5. cored-wire according to claim 2 is characterized in that, the weight percent of described metal calcium line calcium metal content is 95---99.9%.
6. cored-wire according to claim 1 and 2 is characterized in that, described band shape steel band is a cold-rolled steel strip.
7. cored-wire according to claim 6 is characterized in that, the carbonaceous weight percent of described cold-rolled steel strip is not more than 0.15%.
8. cored-wire according to claim 7 is characterized in that, the thickness of strips of described cold-rolled steel strip is 0.25---0.8mm.
9. cored-wire according to claim 8 is characterized in that, the thickness of strips of described cold-rolled steel strip is 0.42---0.5mm.
10. the manufacture method of the described cored-wire of claim 2 may further comprise the steps:
(1), calcium metal is processed into the metal calcium line;
(2), on the cored-wire machine, the metal calcium line of being processed closely is rolled into line with steel band;
(3), rolling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201010262758 CN101942542A (en) | 2010-08-24 | 2010-08-24 | Cored wire and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010262758 CN101942542A (en) | 2010-08-24 | 2010-08-24 | Cored wire and manufacturing method thereof |
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| CN101942542A true CN101942542A (en) | 2011-01-12 |
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| CN 201010262758 Pending CN101942542A (en) | 2010-08-24 | 2010-08-24 | Cored wire and manufacturing method thereof |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102206732A (en) * | 2011-05-21 | 2011-10-05 | 马鞍山中冶钢铁冶金高新技术有限公司 | Solid-core passivated pure calcium cored wire and manufacturing method thereof |
| CN102382939A (en) * | 2011-10-27 | 2012-03-21 | 内蒙古包钢钢联股份有限公司 | Method for feeding high-calcium wire at steel plate cold-rolled common (SPCC) steel refining station |
| CN102424893A (en) * | 2011-10-14 | 2012-04-25 | 陈来祥 | Solid metal calcium-aluminum cored wire and preparation method thereof |
| CN102424892A (en) * | 2011-11-28 | 2012-04-25 | 秦皇岛双轮环保科技有限公司 | Preparation method of pure calcium filament used for clean steel production |
| CN102424891A (en) * | 2011-12-09 | 2012-04-25 | 郑州万隆冶金炉料有限公司 | Production method of pure calcium solid-core core spun threads for smelting steel |
| CN102586542A (en) * | 2012-04-10 | 2012-07-18 | 上海马腾新型材料厂 | Metal calcium core composite cored wire and preparation method thereof |
| CN102618696A (en) * | 2012-04-16 | 2012-08-01 | 郑州万隆冶金炉料有限公司 | Composite calcium metal wire cored wire for steelmaking deoxygenation and production method thereof |
| CN102653808A (en) * | 2012-05-07 | 2012-09-05 | 上海盛宝冶金科技有限公司 | Seamless aluminum-containing core-spun yarn |
| CN102676739A (en) * | 2012-05-07 | 2012-09-19 | 上海盛宝冶金科技有限公司 | Seamless aluminum-containing core spun yarn |
| 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 |
| CN103981332A (en) * | 2014-04-08 | 2014-08-13 | 河南鹏钰集团有限公司 | Aluminum-barium wire and production process thereof |
| CN104152631A (en) * | 2014-08-19 | 2014-11-19 | 马鞍山中科冶金材料科技有限公司 | Material for molten steel deoxidation and microalloying and preparation method and application method thereof |
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| WO2009154701A1 (en) * | 2008-06-17 | 2009-12-23 | Specialty Minerals (Michigan) Inc. | Strand cladding of calcium wire |
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| JPS54158317A (en) * | 1978-06-06 | 1979-12-14 | Hitachi Cable Ltd | Manufacture of steel additive |
| US6346135B1 (en) * | 1998-12-10 | 2002-02-12 | Minerals Technologies Inc. | Cored wire for treating molten metal |
| CN101111324A (en) * | 2005-01-28 | 2008-01-23 | 注射器合金有限公司 | Wire for refining molten metal and associated method of manufacture |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102206732A (en) * | 2011-05-21 | 2011-10-05 | 马鞍山中冶钢铁冶金高新技术有限公司 | Solid-core passivated pure calcium cored wire and manufacturing method thereof |
| CN102424893B (en) * | 2011-10-14 | 2014-11-05 | 陈来祥 | Solid metal calcium-aluminum cored wire and preparation method thereof |
| CN102424893A (en) * | 2011-10-14 | 2012-04-25 | 陈来祥 | Solid metal calcium-aluminum cored wire and preparation method thereof |
| CN102382939A (en) * | 2011-10-27 | 2012-03-21 | 内蒙古包钢钢联股份有限公司 | Method for feeding high-calcium wire at steel plate cold-rolled common (SPCC) steel refining station |
| CN102424892A (en) * | 2011-11-28 | 2012-04-25 | 秦皇岛双轮环保科技有限公司 | Preparation method of pure calcium filament used for clean steel production |
| CN102424891A (en) * | 2011-12-09 | 2012-04-25 | 郑州万隆冶金炉料有限公司 | Production method of pure calcium solid-core core spun threads for smelting steel |
| CN102586542A (en) * | 2012-04-10 | 2012-07-18 | 上海马腾新型材料厂 | Metal calcium core composite cored wire and preparation method thereof |
| CN102618696A (en) * | 2012-04-16 | 2012-08-01 | 郑州万隆冶金炉料有限公司 | Composite calcium metal wire cored wire for steelmaking deoxygenation and production method thereof |
| CN102676739A (en) * | 2012-05-07 | 2012-09-19 | 上海盛宝冶金科技有限公司 | Seamless aluminum-containing core spun yarn |
| CN102653808A (en) * | 2012-05-07 | 2012-09-05 | 上海盛宝冶金科技有限公司 | Seamless aluminum-containing core-spun yarn |
| 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 |
| CN103981332A (en) * | 2014-04-08 | 2014-08-13 | 河南鹏钰集团有限公司 | Aluminum-barium wire and production process thereof |
| CN103981332B (en) * | 2014-04-08 | 2016-04-13 | 河南鹏钰集团有限公司 | A kind of aluminium barium line and production technique thereof |
| CN104152631A (en) * | 2014-08-19 | 2014-11-19 | 马鞍山中科冶金材料科技有限公司 | Material for molten steel deoxidation and microalloying and preparation method and application method thereof |
| CN104152631B (en) * | 2014-08-19 | 2016-01-27 | 马鞍山中科冶金材料科技有限公司 | A kind of material for deoxidation of molten steel, microalloying and preparation method and application method |
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Open date: 20110112 |