CN102618696A - Composite calcium metal wire cored wire for steelmaking deoxygenation and production method thereof - Google Patents
Composite calcium metal wire cored wire for steelmaking deoxygenation and production method thereof Download PDFInfo
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- CN102618696A CN102618696A CN2012101104051A CN201210110405A CN102618696A CN 102618696 A CN102618696 A CN 102618696A CN 2012101104051 A CN2012101104051 A CN 2012101104051A CN 201210110405 A CN201210110405 A CN 201210110405A CN 102618696 A CN102618696 A CN 102618696A
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- calcium
- inner core
- wire
- powder
- filement
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- 239000011575 calcium Substances 0.000 title claims abstract description 75
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 title claims abstract description 73
- 229910052791 calcium Inorganic materials 0.000 title claims abstract description 72
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 31
- 239000002184 metal Substances 0.000 title claims abstract description 31
- 238000009628 steelmaking Methods 0.000 title claims abstract description 17
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- 239000002131 composite material Substances 0.000 title abstract description 12
- 238000006392 deoxygenation reaction Methods 0.000 title abstract 3
- 239000000843 powder Substances 0.000 claims abstract description 37
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 32
- 239000010959 steel Substances 0.000 claims abstract description 32
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229910000519 Ferrosilicon Inorganic materials 0.000 claims abstract description 21
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 16
- 101710205660 Calcium-transporting ATPase Proteins 0.000 claims abstract description 13
- 101710134161 Calcium-transporting ATPase sarcoplasmic/endoplasmic reticulum type Proteins 0.000 claims abstract description 13
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 10
- 230000003647 oxidation Effects 0.000 claims abstract description 8
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 8
- 238000005266 casting Methods 0.000 claims abstract description 7
- 239000012535 impurity Substances 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 16
- 239000000203 mixture Substances 0.000 claims description 14
- 229910052748 manganese Inorganic materials 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 9
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- 229910052698 phosphorus Inorganic materials 0.000 claims description 7
- 229910052717 sulfur Inorganic materials 0.000 claims description 7
- 229910002114 biscuit porcelain Inorganic materials 0.000 claims description 6
- 238000007670 refining Methods 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 4
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 239000000155 melt Substances 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 3
- 239000012467 final product Substances 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 238000003723 Smelting Methods 0.000 abstract description 4
- 238000005253 cladding Methods 0.000 abstract 2
- 238000004804 winding Methods 0.000 abstract 2
- 239000003344 environmental pollutant Substances 0.000 abstract 1
- 230000007903 penetration ability Effects 0.000 abstract 1
- 231100000719 pollutant Toxicity 0.000 abstract 1
- 238000003825 pressing Methods 0.000 abstract 1
- 238000003860 storage Methods 0.000 abstract 1
- 238000004018 waxing Methods 0.000 abstract 1
- 239000000047 product Substances 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 241001062472 Stokellia anisodon Species 0.000 description 1
- ULGYAEQHFNJYML-UHFFFAOYSA-N [AlH3].[Ca] Chemical compound [AlH3].[Ca] ULGYAEQHFNJYML-UHFFFAOYSA-N 0.000 description 1
- WNQQFQRHFNVNSP-UHFFFAOYSA-N [Ca].[Fe] Chemical compound [Ca].[Fe] WNQQFQRHFNVNSP-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000003872 feeding technique Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- Treatment Of Steel In Its Molten State (AREA)
Abstract
The invention discloses a composite calcium metal wire cored wire for steelmaking deoxygenation. The cored wire comprises a calcium wire inner core and a band steel cover used for cladding the calcium wire inner core, and ferrosilicon powder or reduced iron powder layer is tamped between the calcium wire inner core and the band steel cover. A production method includes eliminating impurities on a calcium ingot surface, casting the calcium ingot into a calcium pump after melt, manufacturing the calcium pump until the surface is smooth, waxing, nitrogen feeding and storing; heating the calcium pump, manufacturing the calcium pump into the calcium wire inner core with a diameter of 5-8mm, winding the calcium wire inner core into a wire coil, and feeding nitrogen for storage and using; and cladding the calcium wire inner core with the band steel cover, stamping the ferrosilicon powder or reduced iron powder in gaps, and winding into a coil after tightly pressing. The composite calcium metal wire cored wire for the steelmaking deoxygenation and the production method thereof have the advantages that the penetration ability is high, the critical depth of calcium can be reached during wire feeding, and the yield of the calcium is improved; powder specific surface area is reduced greatly, oxidation is not easy to produce, other pollutants can not be carried during smelting for steel grades with special requirements; and feeding amount is little, and smelting cost is reduced.
Description
Technical field
The present invention relates to metallurgical field of steel-making, especially relate to a kind of composition metal calcium filement core thread that is used for deoxidation in steel making, the invention still further relates to the working method of this composite core-spun yarn.
Background technology
Outside stove, molten steel is carried out calcium with the form of cored-wire and handles, promptly molten steel is carried out desulfurization, changes the form of inclusion in the molten steel, to improve the castability of molten steel, be 20th century late nineteen seventies begin to develop the technology of appearance.China starts from the eighties initial stage in last century to the research of wire-feeding technique; Through nearly 30 years development; This technology is quite ripe; Become important key link in the modern steel production, external refining equipment has all been equipped by nearly all steel mill at present, and the cored-wire of feeding has still all had bigger development in output on quality and kind.But the specific surface area of calcium powder is big in calcium iron wire commonly used, the calcium aluminum steel, is prone to produce oxidation, and the iron powder in the isochrone also causes secondary oxidation easily; Common cored-wire is because belt steel thickness is thinner, do not reach during line feeding critical depth that calcium exists with liquid form in molten steel just reaction finish, part metals calcium has just been run away with the form of calcium steam before reaction, causes the yield of calcium low; Pure calcium silk thread causes the molten steel splash easily because reaction is fierce, and the use of pure calcium silk thread is restricted.
Summary of the invention
Can be deeply when the object of the present invention is to provide a kind of line feeding to the critical depth of calcium and the higher composition metal calcium filement core thread that is used for deoxidation in steel making of the yield of calcium, the present invention also provides the working method of this composition metal calcium filement core thread.
For realizing above-mentioned purpose, the present invention can take following technical proposals:
The composition metal calcium filement core thread that is used for deoxidation in steel making of the present invention comprises calcium silk inner core and the band steel crust that coats said calcium silk inner core, between said calcium silk inner core and band steel crust, has tamped ferrosilicon powder or reduced iron bisque.
The diameter of said calcium silk inner core is 5-8mm.
The thickness of said band steel crust is 0.35-0.45mm.
The granularity of said ferrosilicon powder or reduced iron powder is less than 3mm.
The working method of composite core-spun yarn of the present invention is following:
The first step is removed zone of oxidation impurity with calcium metal ingot raw material surface, goes into the metal calcium pump of casting diameter 130mm, length 480-500mm after refining furnace heats, melts;
In second step, to smooth surface, preserve by waxdip, inflated with nitrogen with machined into for the metal calcium pump of casting;
In the 3rd step, the second metal calcium pump that process of step after the process furnace internal heating is to 300-350 ℃, is processed into the calcium silk inner core of diameter 5-8mm with extrusion machine;
The 4th step was wound in the coil of wire with the 3rd calcium silk inner core processed of step, and it is subsequent use to charge into nitrogen packed preservation;
In the 5th step, select for use granularity subsequent use less than ferrosilicon powder or the reduced iron powder powder of 3mm;
The 6th step, use the cored-wire production unit, after wrapping up calcium silk inner core with band steel crust, in its slit, tamp ferrosilicon fines again, be wound in the coil of wire after compressing and get final product.
The physical and chemical index of finished product composite core-spun yarn calcium silk inner core is: Ca>=97%, Si≤0.01%, N≤0.1%, Ni≤0.10%, Mn≤0.05%, Al≤0.08%, Cu≤0.05%, Mg≤0.80%, Fe≤0.10%.
The physical and chemical index of ferrosilicon powder is in the finished product composite core-spun yarn: Si=65-80%, Mn≤0.6%, Cr≤0.5%, P=0.04%, S=0.02%, C=0.4%.
The physical and chemical index of reduced iron powder is in the finished product composite core-spun yarn: Fe>=98%, Mn≤0.40%, Si≤0.15%, P≤0.03%, S≤0.03%, C≤0.07%.
The invention has the advantages that the external packets at calcium metal silk inner core is wrapped with ferrosilicon powder or reduced iron bisque, its penetrativity is strong, can reach during line feeding below the critical depth of calcium; Before not forming calcium steam as yet; Calcium reacts with molten steel, has improved the yield of calcium, and the yield of calcium is stable; Because the external packets of calcium silk inner core is wrapped with ferrosilicon powder or reduced iron bisque, dwindle greatly than traditional silicocalcium cored-wire, powder specific surface area that ferro-calcium core-spun yarn is used, be difficult for producing oxidation; Do not have the existence of iron powder simultaneously, also be not easy to take place secondary oxidation; To the steel grade of particular requirement is arranged, can not bring other pollutents (like impurity such as C, S, P, Al) during smelting into; Feed quantity reduces, and has reduced smelting cost.
Description of drawings
Fig. 1 is the structural representation of composite core-spun yarn of the present invention.
Embodiment
As shown in Figure 1; The composition metal calcium filement core thread that is used for deoxidation in steel making of the present invention; Comprise calcium silk inner core 1 and the band steel crust 2 that coats calcium silk inner core 1, between calcium silk inner core 1 and band steel crust 2, tamped ferrosilicon powder or reduced iron bisque 3, the diameter of calcium silk inner core 1 is 5-8mm; The thickness of band steel crust 2 is 0.35-0.45mm; The granularity of ferrosilicon powder or reduced iron powder is less than 3mm, and the thickness of ferrosilicon powder or reduced iron bisque 3 is 6.65-7.55mm.
The working method of composite core-spun yarn of the present invention is:
The first step is removed zone of oxidation impurity with calcium metal ingot raw material surface, goes into the metal calcium pump of casting diameter 130mm, length 480-500mm after refining furnace heats, melts;
In second step, to smooth surface, preserve by waxdip (be fused into behind the whiteruss immerse again solid paraffin), inflated with nitrogen with machined into for the metal calcium pump of casting;
In the 3rd step, the second metal calcium pump that process of step after the process furnace internal heating is to 300-350 ℃, is processed into the calcium silk inner core of diameter 5-8mm with extrusion machine; Extruder mold need be preheated to 300-340 ℃ in the mold heated stove;
The 4th step was wound in the coil of wire with the 3rd calcium silk inner core processed of step, and it is subsequent use to charge into nitrogen packed preservation; The physical and chemical index of finished product calcium silk inner core is: Ca>=97%, Si≤0.01%, N≤0.1%, Ni≤0.10%, Mn≤0.05%, Al≤0.08%, Cu≤0.05%, Mg≤0.80%, Fe≤0.10%; Calcium silk density is 1.54g/cm
3
The 5th step, select ferrosilicon powder for use if tamp material, then earlier the ferrosilicon raw material is broken into the powder of granularity less than 3mm with jaw crusher, the physical and chemical index of its ferrosilicon powder is: Si=65-80%, Mn≤0.6%, Cr≤0.5%, P=0.04%, S=0.02%, C=0.4%; Select reduced iron powder for use if tamp material, then the granularity of reduced iron powder is less than 3mm, and the physical and chemical index of reduced iron powder is: Fe>=98%, Mn≤0.40%, Si≤0.15%, P≤0.03%, S≤0.03%, C≤0.07%;
The 6th step, use the cored-wire production unit, after wrapping up calcium silk inner core with band steel crust, in its slit, tamp ferrosilicon fines or reduced iron powder again, be wound in the coil of wire after compressing and get product; It is Q195 or the 08Al band steel of 0.35-0.45mm that band steel crust is wherein generally selected thickness for use, and the diameter of finished product composite core-spun yarn is 12-16mm.
The method of use of composite core-spun yarn of the present invention is:
Smelt steel grade: SPHC, SWRCH8A, SWRCH35K.Molten steel carries out line feeding after through the refining of LF stove, and wire-feeding velocity is 1.5-2.2m/s, 350 meters of feed quantities, line feeding quiet the blowing 5 minutes that finish.The yield of calcium is stable after the line feeding, and average out to 21.8% exceeds 9-11 percentage point than the yield that feeds the silicocalcium cored-wire, and the billet quality that shuts out is stable.
Claims (8)
1. composition metal calcium filement core thread that is used for deoxidation in steel making; Comprise the band steel crust (2) of calcium silk inner core (1) and the said calcium silk inner core of coating (1), it is characterized in that: between said calcium silk inner core (1) and band steel crust (2), tamped ferrosilicon powder or reduced iron bisque (3).
2. the composition metal calcium filement core thread that is used for deoxidation in steel making according to claim 1, it is characterized in that: the diameter of said calcium silk inner core (1) is 5-8mm.
3. the composition metal calcium filement core thread that is used for deoxidation in steel making according to claim 1, it is characterized in that: the thickness of said band steel crust (2) is 0.35-0.45mm.
4. the composition metal calcium filement core thread that is used for deoxidation in steel making according to claim 1, it is characterized in that: the granularity of said ferrosilicon powder or reduced iron powder is less than 3mm.
5. according to each described working method that is used for the composition metal calcium filement core thread of deoxidation in steel making among the claim 1-4, it is characterized in that: it comprises the steps:
The first step is removed zone of oxidation impurity with calcium metal ingot raw material surface, goes into the metal calcium pump of casting diameter 130mm, length 480-500mm after refining furnace heats, melts;
In second step, to smooth surface, preserve by waxdip, inflated with nitrogen with machined into for the metal calcium pump of casting;
In the 3rd step, the second metal calcium pump that process of step after the process furnace internal heating is to 300-350 ℃, is processed into the calcium silk inner core of diameter 5-8mm with extrusion machine;
The 4th step was wound in the coil of wire with the 3rd calcium silk inner core processed of step, and it is subsequent use to charge into nitrogen packed preservation;
In the 5th step, select for use granularity subsequent use less than ferrosilicon powder or the reduced iron powder powder of 3mm;
The 6th step, use the cored-wire production unit, after wrapping up calcium silk inner core with band steel crust, in its slit, tamp ferrosilicon fines or reduced iron powder again, be wound in the coil of wire after compressing and get final product.
6. the working method that is used for the composition metal calcium filement core thread of deoxidation in steel making according to claim 5, it is characterized in that: the physical and chemical index of said calcium silk inner core is: Ca>=97%, Si≤0.01%; N≤0.1%, Ni≤0.10%, Mn≤0.05%; Al≤0.08%; Cu≤0.05%, Mg≤0.80%, Fe≤0.10%.
7. the working method that is used for the composition metal calcium filement core thread of deoxidation in steel making according to claim 5, it is characterized in that: the physical and chemical index of said ferrosilicon powder is: Si=65-80%, Mn≤0.6%, Cr≤0.5%, P=0.04%, S=0.02%, C=0.4%.
8. the working method that is used for the composition metal calcium filement core thread of deoxidation in steel making according to claim 5, it is characterized in that: the physical and chemical index of said reduced iron powder is: Fe>=98%, Mn≤0.40%, Si≤0.15%, P≤0.03%, S≤0.03%, C≤0.07%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101104051A CN102618696A (en) | 2012-04-16 | 2012-04-16 | Composite calcium metal wire cored wire for steelmaking deoxygenation and production method thereof |
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| CN2012101104051A CN102618696A (en) | 2012-04-16 | 2012-04-16 | Composite calcium metal wire cored wire for steelmaking deoxygenation and production method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107398680A (en) * | 2017-01-18 | 2017-11-28 | 青海三工镁业有限公司 | A kind of calcium metal bare wire and core-spun yarn linkage production technology |
| CN111518989A (en) * | 2020-06-03 | 2020-08-11 | 马鞍山市兴达冶金新材料有限公司 | Environment-friendly composite calcium core-spun yarn and preparation method thereof |
| CN112080609A (en) * | 2020-09-29 | 2020-12-15 | 沈阳钢中宝科技有限公司 | Composite nitrogen core-spun yarn for steelmaking and preparation and use methods thereof |
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| CN1664124A (en) * | 2005-02-17 | 2005-09-07 | 包头翌新冶金技术有限公司 | Magnesium core spun yarn |
| CN101942542A (en) * | 2010-08-24 | 2011-01-12 | 上海马腾新型材料厂 | Cored wire and manufacturing method thereof |
| CN202272913U (en) * | 2011-10-09 | 2012-06-13 | 湖北亚克新材料有限公司 | High-efficiency composite cored wire |
| 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 |
| CN202558883U (en) * | 2012-04-16 | 2012-11-28 | 郑州万隆冶金炉料有限公司 | Composition metal calcium-wire cored wire for steel-making deoxidization |
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2012
- 2012-04-16 CN CN2012101104051A patent/CN102618696A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1664124A (en) * | 2005-02-17 | 2005-09-07 | 包头翌新冶金技术有限公司 | Magnesium core spun yarn |
| CN101942542A (en) * | 2010-08-24 | 2011-01-12 | 上海马腾新型材料厂 | Cored wire and manufacturing method thereof |
| CN202272913U (en) * | 2011-10-09 | 2012-06-13 | 湖北亚克新材料有限公司 | High-efficiency composite cored wire |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107398680A (en) * | 2017-01-18 | 2017-11-28 | 青海三工镁业有限公司 | A kind of calcium metal bare wire and core-spun yarn linkage production technology |
| CN111518989A (en) * | 2020-06-03 | 2020-08-11 | 马鞍山市兴达冶金新材料有限公司 | Environment-friendly composite calcium core-spun yarn and preparation method thereof |
| CN112080609A (en) * | 2020-09-29 | 2020-12-15 | 沈阳钢中宝科技有限公司 | Composite nitrogen core-spun yarn for steelmaking and preparation and use methods thereof |
| CN112080609B (en) * | 2020-09-29 | 2024-05-17 | 沈阳钢中宝科技有限公司 | A composite nitrogen cored wire for steelmaking and its preparation and use method |
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Application publication date: 20120801 |