CN108085461A - A kind of silico-calcium carbon core-spun yarn - Google Patents
A kind of silico-calcium carbon core-spun yarn Download PDFInfo
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- CN108085461A CN108085461A CN201711457384.XA CN201711457384A CN108085461A CN 108085461 A CN108085461 A CN 108085461A CN 201711457384 A CN201711457384 A CN 201711457384A CN 108085461 A CN108085461 A CN 108085461A
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- calcium
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- silico
- spun yarn
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- 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
-
- 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
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/06—Deoxidising, e.g. killing
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The invention discloses a kind of silico-calcium carbon core-spun yarns, belong to the cored wire technology field that purified steel process uses.Technical scheme main points are：A kind of silico-calcium carbon core-spun yarn by aluminium strip crust and is wrapped in intracutaneous core powder outside aluminium strip and forms, and the core powder is that the raw material matched by following weight percent is prepared：Calcium-silicon powder 70%, the grain size of the calcium-silicon powder is less than 2mm, and wherein content >=30wt% of calcium, the content of silicon are 58wt% 60wt%, surplus is iron；Carbon dust 30%, for the purity of the carbon dust higher than 97%, grain size is less than 2mm.The silico-calcium carbon core-spun yarn deoxidation effect of the present invention is good, reduces steel-making cost, improves steel-making efficiency.
Description
Technical field
The invention belongs to the cored wire technology fields that purified steel process uses, and in particular to a kind of silico-calcium carbon core-spun yarn.
Background technology
Used a kind of thread like material when core-spun yarn is refining liquid steel, it is by sandwich layer and is wrapped in sandwich layer outer surface
Foreskin is formed made of band steel sheet.When in use, core-spun yarn is continually fed into ladle by feeding wire machine, when into steel
After the foreskin fusing of core-spun yarn in bag, sandwich layer is exposed to contact directly with molten steel and chemically reacted, and is passed through argon gas and stirred
The kinetics function mixed can effectively achieve deoxidation, desulfurization, removal of inclusions, to improve the quality of steel and performance.It can
See, to core-spun yarn is allowed effectively to purify molten steel, the most important condition is that the active ingredient in sandwich layer allows for being immersed in refining furnace
Molten steel in can be only achieved preferable clean-up effect.Although calcium is a kind of strong deoxidier, but because its proportion is relatively light, fusing point phase
To relatively low, and bubble is easily generated at high temperature, so simple be present with core-spun yarn just quilt using calcium metal as core-spun yarn core layer
The phenomenon that beginning to burning is sent in refining furnace, and core-spun yarn enters below less than the middle part of molten steel, is just not achieved preferably
Clean-up effect even with measures such as heat safe coating material and quick insertions, can not totally block its burning, and sandwich layer
While preferable clean-up effect is not achieved in burning under such conditions, the calcium wasting of resources of higher price can be also caused；It is another
Aspect, calcium grain gasifies in molten steel can form larger vapour pressure, and cause molten steel vigorous splash, directly affect and smelting furnace
Service life.Conventional deoxidier containing Al has metallic aluminium, ferro-silico aluminium, Si-Al-Ba alloy etc., and price is generally higher, is taken off with Al deoxidiers
Oxygen, deoxidation products is generally containing Al2O3Field trash, the quality of steel is harmful to, also be easy to cause water outlet dross.
The content of the invention
The technical problem to be solved by the present invention is to provide a kind of silico-calcium carbon core-spun yarn, the silico-calcium carbon core-spun yarn deoxidation effects
It is good, steel-making cost is reduced, improves steel-making efficiency.
It is of the invention to adopt the following technical scheme that solve above-mentioned technical problem, a kind of silico-calcium carbon core-spun yarn, by aluminium strip crust
It and is wrapped in intracutaneous core powder outside aluminium strip and forms, it is characterised in that the core powder is prepared by the raw material matched by following weight percent
It forms：
Calcium-silicon powder 70%, less than 2mm, wherein content >=30wt% of calcium, the content of silicon is the grain size of the calcium-silicon powder
58wt%-60wt%, surplus are iron；
Carbon dust 30%, for the purity of the carbon dust higher than 97%, grain size is less than 2mm.
Further preferably, the core powder is that the raw material matched by following weight percent is prepared：
Calcium-silicon powder 70%, the content 35wt% of calcium, the content of silicon are 60wt% in the calcium-silicon powder, and the content of iron is 5wt%；
Carbon dust 30%.
The silico-calcium carbon core-spun yarn deoxidation effect of the present invention is good, reduces steel-making cost, improves steel-making efficiency.
Specific embodiment
The above of the present invention is described in further details by the following examples, but this should not be interpreted as to this
The scope for inventing above-mentioned theme is only limitted to following embodiment, and all technologies realized based on the above of the present invention belong to this hair
Bright scope.
Embodiment 1
Silico-calcium carbon core-spun yarn is by aluminium strip crust and is wrapped in intracutaneous core powder outside aluminium strip and forms, and the core powder is by following weight hundred
What the raw material of distribution ratio was prepared：Calcium-silicon powder 70%, less than 2mm, the content of wherein calcium is the grain size of the calcium-silicon powder
35wt%, the content of silicon are 60wt%, the content of iron is 5wt%；Carbon dust 30%, for the purity of the carbon dust higher than 97%, grain size is less than 2mm.
Calcium is as strong deoxidant element in silico-calcium carbon core-spun yarn made from the embodiment, moreover it is possible to can improve the deoxidation energy of aluminium
Power, and the field trash of low melting point is generated, the meltage and consumption of aluminium are reduced, silicon further improves deoxidation with calcium synergistic effect
Ability can change folder object fractions distribution in steel, and the oxide in molten steel is made to become low melting point and is easy to the deoxidation products to float, iron
Element improves the proportion of the deoxidier, deoxidier is enable to sink to, abundant deoxidation is carried out in molten steel.
Embodiment 2
Silico-calcium carbon core-spun yarn is by aluminium strip crust and is wrapped in intracutaneous core powder outside aluminium strip and forms, and the core powder is by following weight hundred
What the raw material of distribution ratio was prepared：Calcium-silicon powder 70%, less than 2mm, the content of wherein calcium is the grain size of the calcium-silicon powder
30wt%, the content of silicon are 58wt%, the content of iron is 12wt%；Carbon dust 30%, higher than 97%, grain size is less than the purity of the carbon dust
2mm。
Embodiment 3
Silico-calcium carbon core-spun yarn is by aluminium strip crust and is wrapped in intracutaneous core powder outside aluminium strip and forms, and the core powder is by following weight hundred
What the raw material of distribution ratio was prepared：Calcium-silicon powder 70%, less than 2mm, the content of wherein calcium is the grain size of the calcium-silicon powder
33wt%, the content of silicon are 60wt%, the content of iron is 7wt%；Carbon dust 30%, for the purity of the carbon dust higher than 97%, grain size is less than 2mm.
Have been shown and described above the basic principle of the present invention, main feature and advantage, do not depart from spirit of the invention and
On the premise of scope, the present invention also has various changes and modifications, these changes and improvements both fall within claimed invention
Scope.
Claims (2)
1. a kind of silico-calcium carbon core-spun yarn, by aluminium strip crust and it is wrapped in intracutaneous core powder outside aluminium strip and forms, it is characterised in that is described
Core powder is that the raw material matched by following weight percent is prepared：
Calcium-silicon powder 70%, less than 2mm, wherein content >=30wt% of calcium, the content of silicon is the grain size of the calcium-silicon powder
58wt%-60wt%, surplus are iron；
Carbon dust 30%, for the purity of the carbon dust higher than 97%, grain size is less than 2mm.
2. silico-calcium carbon core-spun yarn according to claim 1, it is characterised in that the core powder is matched by following weight percent
Raw material be prepared：
Calcium-silicon powder 70%, the content 35wt% of calcium, the content of silicon are 60wt% in the calcium-silicon powder, and the content of iron is 5wt%；
Carbon dust 30%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711457384.XA CN108085461A (en) | 2017-12-28 | 2017-12-28 | A kind of silico-calcium carbon core-spun yarn |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711457384.XA CN108085461A (en) | 2017-12-28 | 2017-12-28 | A kind of silico-calcium carbon core-spun yarn |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108085461A true CN108085461A (en) | 2018-05-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711457384.XA Pending CN108085461A (en) | 2017-12-28 | 2017-12-28 | A kind of silico-calcium carbon core-spun yarn |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114457209A (en) * | 2022-02-09 | 2022-05-10 | 安徽奥微新材料有限公司 | Process method for reducing oxygen content in prealloyed matrix powder smelting process |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1073722A (en) * | 1991-12-25 | 1993-06-30 | 冶金工业部攀枝花钢铁公司 | Compounding agent for cleaning molten steel and using method thereof |
| CN1084894A (en) * | 1992-09-29 | 1994-04-06 | 刘铁岭 | Purification of molten steel heating line feeding purifying method and purification heating cored-wire |
| CN101260450A (en) * | 2008-04-30 | 2008-09-10 | 湖北猴王焊材有限公司 | Micro-alloy composite core-spun yarn for high-strength structure steel |
| CN101935738A (en) * | 2010-06-01 | 2011-01-05 | 山西太钢不锈钢股份有限公司 | Method for feeding silico-calcium core-spun yarn |
| CN104032090A (en) * | 2014-05-10 | 2014-09-10 | 长兴三重窑炉科技有限公司 | Silicon-calcium-carbon based deoxidizer |
-
2017
- 2017-12-28 CN CN201711457384.XA patent/CN108085461A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1073722A (en) * | 1991-12-25 | 1993-06-30 | 冶金工业部攀枝花钢铁公司 | Compounding agent for cleaning molten steel and using method thereof |
| CN1084894A (en) * | 1992-09-29 | 1994-04-06 | 刘铁岭 | Purification of molten steel heating line feeding purifying method and purification heating cored-wire |
| CN101260450A (en) * | 2008-04-30 | 2008-09-10 | 湖北猴王焊材有限公司 | Micro-alloy composite core-spun yarn for high-strength structure steel |
| CN101935738A (en) * | 2010-06-01 | 2011-01-05 | 山西太钢不锈钢股份有限公司 | Method for feeding silico-calcium core-spun yarn |
| CN104032090A (en) * | 2014-05-10 | 2014-09-10 | 长兴三重窑炉科技有限公司 | Silicon-calcium-carbon based deoxidizer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114457209A (en) * | 2022-02-09 | 2022-05-10 | 安徽奥微新材料有限公司 | Process method for reducing oxygen content in prealloyed matrix powder smelting process |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180529 |
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| RJ01 | Rejection of invention patent application after publication |