CN106676230A - Core-spun yarn - Google Patents
Core-spun yarn Download PDFInfo
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- CN106676230A CN106676230A CN201510750345.3A CN201510750345A CN106676230A CN 106676230 A CN106676230 A CN 106676230A CN 201510750345 A CN201510750345 A CN 201510750345A CN 106676230 A CN106676230 A CN 106676230A
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- core
- spun yarn
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Abstract
The invention relates to the technical field of steel furnace external refining, in particular to a core-spun yarn. The core-spun yarn comprises a core body and at least two coating layers, and the coating layers are steel belts. The coating layers are composed of two layers of steel belts. The first coating layer tightly wraps the core body, the second coating layer wraps the first coating layer, the thickness of the first coating layer is 0.4-1.2 mm, and the thickness of the second coating layer is 0.3-0.6 mm. At least one layer of steel belt is additionally arranged in a common core-spun yarn, the total thickness of a material layer except for the core body is increased formally, and thus the strength of the core-spun yarn is better improved, the core-spun yarn can be fed to the bottom of molten liquid, the reaction depth of powder in the molten liquid is increased, the reaction time of the core-spun yarn is prolonged, and accordingly the yield of the powder is greatly improved.
Description
Technical field
The present invention relates to furnace outer refining technology is made steel, more particularly to a kind of core-spun yarn.
Background technology
During steel-smelting production process, P in order to reach removing molten steel, S, C element, substantial amounts of oxygen need to be blown in molten steel, it is allowed to be reacted in oxygen, generate the product insoluble in molten steel, P in reduce molten steel, S, C element content, but can cause to contain substantial amounts of free oxygen in molten steel, the free oxygen in this part can be made during molten steel casting cooled and solidified, the tensile strength of steel can seriously be reduced, yield strength and impact flexibility, affect the surface quality of steel billet and the cleanliness factor of steel, therefore, in LF stoves or RH stove refining process, can be by add some a small amount of additives and additive, make itself and the field trash in molten steel that chemical reaction to occur, to reach the field trash and free oxygen removed in molten steel, improve steel cleanliness factor and regulation, improve toughness of steel etc..
A kind of thread like material adopted when core-spun yarn is refining liquid steel, can cleaning molten steel, change inclusion morphology, improve molten steel castability and mechanical property, and the recovery rate of alloying element can be significantly improved, reduce steel-making cost.It can be seen that, want to allow core-spun yarn effectively to purify molten steel, the most important condition is to can be only achieved preferable clean-up effect in molten steel that the active component in sandwich layer allows for be immersed in refining furnace.
The Chinese invention patent of Patent No. 2013200312358 discloses a kind of pure calcium core-spun yarn of real core with powder interlayer, the core-spun yarn is combined by real core calcium silk, powder interlayer, steel band, feature is that powder interlayer is provided with steel band, and real core calcium silk is inlaid with powder interlayer.This core-spun yarn low production cost, it is easy to use, the recovery rate of calcium can be improved as additive metal smelting, it is preferable to the oxygen in molten steel liquation or field trash elimination effect, so as to reach the composition for adjusting molten steel, the purpose of molten steel cleanliness factor and refining effect is improved.But, this core-spun yarn cannot go deep into molten steel bottom so as to further adjust heavy alloyed hit rate.
The Chinese invention patent of Patent No. 2013205507884 discloses a kind of calcium heart yearn of sandwich construction, including the pure calcium line of metal as inner core, and surrounding layer.One layer or two-layer intermediate layer are provided between the inner core and surrounding layer, the surrounding layer is coated on intermediate layer outer surface, and intermediate layer is coated on successively interior core outer surface.The product increased at least one of which as the granular material loading layers in intermediate layer in common pure calcium core-spun yarn, to increase the material layer gross thickness beyond internal core wire in form, simultaneously because intermediate layer axial direction open-ended, the pliability of core-spun yarn can be ensured, its difficulty of processing is set to be greatly reduced with manufacturing cost again, improve the recovery rate of calcium metal, and expulsion problem when can effectively solve the problem that molten steel Calcium treatment, but, patent inner core of the present invention is real core calcium line, and limitation is compared in effect when carrying out refining treatment.
The Chinese patent of Publication No. CN101942542A discloses a kind of core-spun yarn and its manufacture method, and the core-spun yarn is made up of nexine core material and exoperidium, and exoperidium is formed by steel band (0.42-0.5mm is thick) winding, and nexine core material is the pure calcium of real core metal.Be desirable to obtain higher recovery rate, but because its surrounding layer it is relatively thin, after feeding molten steel, core-spun yarn melts quickly, softens in the presence of high temperature, and core-spun yarn cannot go deep into molten steel bottom, though using the pure calcium of metal, recovery rate also only has 15%～25%, and splash is serious.
In sum, the calcic of existing several types or the core-spun yarn of calcium alloy in this area still suffers from lower column defects：Siliceous low calcium alloy claded wire, such as CaSi, it has the disadvantage：Molten steel increases silicon during external refining, therefore is not suitable for low Si steel grades；Containing calcium silicon grain or abrasive grit mixture core-spun yarn, such as Fe+Ca pulvis core-spun yarn, it has the disadvantage：Because granulated metal calcium specific surface area is big, calcium metal is easily oxidized.In addition, under refining temperature, after surrounding layer melts, exposed calcium metal Quick-gasifying easily causes slag liquid level fierceness and seethes and splash, the recovery rate of calcium is reduced.For above-mentioned reasons, the recovery rate of its calcium metal is typically 10%～15%.
Accordingly, it would be desirable to a kind of new core-spun yarn is to overcome above-mentioned the deficiencies in the prior art, the core-spun yarn has higher intensity, can reach and be fed into molten steel bottom, to increase reaction depth of the powder in molten steel, extend the reaction time of core-spun yarn, so as to greatly improve the recovery rate of powder.
The content of the invention
The present invention is intended to provide a kind of core-spun yarn, increase at least one of which steel band in conventional core-spun yarn, to increase the material layer gross thickness beyond core body in form, so as to can preferably improve cored line strength, reach core-spun yarn and be fed into molten steel bottom, increase reaction depth of the powder in molten steel, extend the reaction time of core-spun yarn, so as to greatly improve the recovery rate of powder.
In order to achieve the above object, the invention provides a kind of core-spun yarn, it includes that core body includes at least two-layer clad with the clad of the core body, the core-spun yarn is coated；Wherein, the clad is steel band.
In an embodiment of the present invention, the core-spun yarn includes two-layer, three layers, the clad of four layers or five layers.The clad is all steel band.
In an embodiment of the present invention, according to core-spun yarn of the present invention, wherein the clad includes the clad being made up of two-layer steel band；Wherein, the first clad closely wraps up the core body, and the second clad is coated on outside first clad, wherein the thickness of first clad is 0.4 ~ 1.2 mm；The thickness of second clad is 0.3 ~ 0.6 mm.First clad is internal layer steel band, and second clad is outer layer steel belt.
In an embodiment of the present invention, the thickness of first clad is 0.4 ~ 1.2mm, for example：0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9 mm, 1.0 mm, 1.1 mm, 1.2mm, and 0.45mm, 0.55mm, 0.65mm, 0.75mm, 0.85 mm, 0.95 mm, 1.05 mm, 1.15 mm etc..And preferably, the thickness of first clad is 0.4 ~ 0.8mm, 0.8 ~ 1.0mm or 1.0 ~ 1.2mm.
In an embodiment of the present invention, the thickness of second clad is 0.3 ~ 0.6mm, for example：0.3mm, 0.4mm, 0.5mm, 0.6mm, and 0.35mm, 0.45mm, 0.55mm etc..And preferably, the thickness of second coating is 0.3 ~ 0.4mm, 0.4 ~ 0.5mm or 0.5 ~ 0.6mm.
In an embodiment of the present invention, second clad is formed with laminating hasp form package.
In an embodiment of the present invention, the core body is powder particles thing, the mixture of one or more compositions in rare earth, calcium-silicon particle, Antaciron particle, Ca-Fe alloy particle, calcium alloy particle, aluminum alloy granule, magnesium alloy particles etc..
At least one of which steel band is additionally arranged in the core-spun yarn of the present invention, double-deck or composite steel band structure is formed, so as to preferably improve the intensity of core-spun yarn.When using, the thickness of core body composition and clad can be adjusted so that when in micro emulsion molten steel the powder layer in core body can fully react the core-spun yarn with molten steel according to the size of ladle, the situation of smelting steel grade, so as to extend the reaction time of core-spun yarn, the generation of expulsion events is prevented effectively from.
The core-spun yarn simple structure and reasonable in design of the present invention, with the reaction time it is long the characteristics of, the recovery rate of metal powder material can be greatly improved.
Description of the drawings
Fig. 1 is the structural representation of the core-spun yarn of the present invention；
Wherein,
Specific embodiment
The present invention is described in detail with reference to embodiments, embodiment is intended to explain and non-limiting technical scheme.
Refer to Fig. 1, the present invention provides a kind of core-spun yarn, including core body 10 and clad 20, wherein, the core body 10 be powder particles thing, one or more mixtures in rare earth, calcium-silicon particle, Antaciron particle, Ca-Fe alloy particle, calcium alloy particle, aluminum alloy granule, magnesium alloy particles etc..In the present embodiment, the core-spun yarn includes two-layer clad：First clad 22 and the second clad 24.The clad 24 of first clad 22 and second is steel band.I.e. described first clad 22 is internal layer steel band, and it is outer layer steel belt that second clad 24 is internal layer steel band.
As shown in figure 1, core body 10 described in the tight of the first clad 22, the second clad 24 is coated on outside first clad 22, also, second clad 24 is formed with laminating hasp form package.
Table 1 below is classified as several specific embodiments of the core-spun yarn.In embodiments, above and as described in Fig. 1, here is omitted for the structure of the core-spun yarn.
Difference between each embodiment is first clad（Internal layer steel band）And second clad（Outer layer steel belt）Thickness, represent in a tabular form below.
The specific embodiment of the core-spun yarn of the present invention of table 1.
At least one of which steel band is additionally arranged in the core-spun yarn of the present invention, the steel band structure of double-deck or multilayer is formed, so as to preferably improve the intensity of core-spun yarn.When using, the thickness of core body composition and clad can be adjusted so that when the core-spun yarn is in micro emulsion molten steel powder layer can fully react with molten steel according to the size of ladle, the situation of smelting steel grade, so as to extend the reaction time of core-spun yarn, the generation of expulsion events is prevented effectively from.
The present invention is been described by by above-mentioned related embodiment, but above-described embodiment only implements the example of the present invention.It must be noted that, it has been disclosed that embodiment be not limiting as the scope of the present invention.On the contrary, being contained in the modification of the spirit and scope of claims and impartial setting is included in the scope of the present invention.
Claims (8)
1. a kind of core-spun yarn, including core body and the clad for coating the core body, it is characterised in that the core-spun yarn includes at least two-layer clad；Wherein, the clad is steel band.
2. core-spun yarn as claimed in claim 1, it is characterised in that the core-spun yarn includes the clad of two-layer to five layers.
3. core-spun yarn as claimed in claim 2, it is characterised in that the core-spun yarn includes the clad of two-layer to three layers.
4. core-spun yarn as claimed in claim 3, it is characterised in that the clad includes the clad being made up of two-layer steel band；Wherein, the first clad closely wraps up the core body, and the second clad is coated on outside first clad, wherein the thickness of first clad is 0.4 ~ 1.2 mm；The thickness of second clad is 0.3 ~ 0.6 mm.
5. core-spun yarn as claimed in claim 4, it is characterised in that the scope of the thickness of first clad is 0.4 ~ 0.8mm, 0.8 ~ 1.0 mm, 1.0 ~ 1.2 mm.
6. the core-spun yarn as described in any one in claim 1-5, it is characterised in that the scope of the thickness of second clad is 0.3 ~ 0.4
mm、0.4~0.5 mm、0.5~0.6 mm。
7. core-spun yarn as claimed in claim 6, it is characterised in that second clad is formed with laminating hasp form package.
8. core-spun yarn as claimed in claim 7, it is characterized in that, the core body is powder particles thing, and the powder particles thing is selected from the mixture of one or more compositions in rare earth, calcium-silicon particle, Antaciron particle, Ca-Fe alloy particle, calcium alloy particle, aluminum alloy granule, magnesium alloy particles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510750345.3A CN106676230A (en) | 2015-11-06 | 2015-11-06 | Core-spun yarn |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510750345.3A CN106676230A (en) | 2015-11-06 | 2015-11-06 | Core-spun yarn |
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| CN106676230A true CN106676230A (en) | 2017-05-17 |
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| CN201510750345.3A Pending CN106676230A (en) | 2015-11-06 | 2015-11-06 | Core-spun yarn |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107805685A (en) * | 2017-10-20 | 2018-03-16 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of method that the silicone content of steel is adjusted in tapping process |
| CN111850234A (en) * | 2020-06-12 | 2020-10-30 | 江苏戴美特医疗科技有限公司 | High-yield and high-strength cold-drawn deoxidized aluminum bar and processing technology thereof |
| CN114875207A (en) * | 2022-05-20 | 2022-08-09 | 东北大学 | Consumable body for ladle refining and refining method thereof |
-
2015
- 2015-11-06 CN CN201510750345.3A patent/CN106676230A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107805685A (en) * | 2017-10-20 | 2018-03-16 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of method that the silicone content of steel is adjusted in tapping process |
| CN111850234A (en) * | 2020-06-12 | 2020-10-30 | 江苏戴美特医疗科技有限公司 | High-yield and high-strength cold-drawn deoxidized aluminum bar and processing technology thereof |
| CN114875207A (en) * | 2022-05-20 | 2022-08-09 | 东北大学 | Consumable body for ladle refining and refining method thereof |
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Application publication date: 20170517 |