CN107955859A - One kind contains Cs2The LF stove refining slags of O - Google Patents
One kind contains Cs2The LF stove refining slags of O Download PDFInfo
- Publication number
- CN107955859A CN107955859A CN201711202474.4A CN201711202474A CN107955859A CN 107955859 A CN107955859 A CN 107955859A CN 201711202474 A CN201711202474 A CN 201711202474A CN 107955859 A CN107955859 A CN 107955859A
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- CN
- China
- Prior art keywords
- steel
- refining
- cutting wire
- wire
- slags
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Classifications
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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
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/076—Use of slags or fluxes as treating agents
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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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 one kind to contain Cs2The LF stove refining slags of O, for cord steel and hyperfine cutting wire steel LF furnace refining slags, the mass percent of its chemical composition is：CaO：32%~42%, SiO2：40%~52%, Al2O3：No more than 8%, Cs2O：No more than 15%, MgO：Less than 5%.The present invention is by adding Cs2A kind of LF furnace refining slags of new chemical composition proportioning of O configurations, it adsorbs inclusion content in melting steel, the ability of removing significantly increases.After hyperfine cutting wire is refined with steel using the slag system in commerical test, the amount of inclusions substantially reduces, and size is controlled in the range of 5 μm of ＜, so as to obtain the high cutting wire steel of degree of purity.Meanwhile the wire broken rate of finished product cutting wire and steel cord during being detected and used substantially reduces.
Description
Technical field
The invention belongs to metallurgical technology field, is related to a kind of essence of hyperfine cutting wire with the ladle furnace refining technology of steel
Slag is refined, more particularly to the ultrapure steel such as extremely low aluminium, low-sulfur, low-phosphorous cord steel and hyperfine cutting wire steel are smelted in LF stoves
Low Al2O3Refining slag.
Background technology
High-end cutting wire be radially be 0.55~0.18mm of Φ finest wire, its diameter than meridian with steel cord more
Carefully, intensity also higher, is mainly used for the cutting of solar energy level silicon.In order to reduce the loss of cutting wire silicon, cutting wire is towards diameter
Thinner and intensity higher direction is developed.The cutting wire specification of existing market mainstream is 0.55~0.07mm of Φ, its production difficulty
Than tyre equatorial steel cord bigger.
Fracture of wire is cutting wire processing and most important problem during use：Found during production and application, work as cutting wire
At a diameter of 60 μm, the hard inclusions thing of 5 μm of diameter ＞ is likely to cause fracture of wire.Therefore, to cutting wire steel inclusion
Size, quantity, the requirement of component are extremely stringent.
The LF refining slag of smelting tire cord steel and cutting wire steel is more mature at present, basicity (w (CaO)/w (SiO2))
In the range of 0.8~1.0, Al2O3＜ 8wt%, can accurately control SiO in steel2-MnO-Al2O3、SiO2-CaO-Al2O3System's folder
Debris component is in low melting point area.But domestic steel mill's pilot production shows, using traditional LF refining slag melting cord steel and
The quantity and size Control of cutting wire steel inclusion are undesirable, often occur 10 μm of size ＞ even 20 μm of ＞'s in steel
Bulky grain hard inclusions, cause steel wire wire broken rate high, it is difficult to reach the requirement of 5 μm of control steel inclusion size ＜.
The content of the invention
It is formulated for existing LF furnace refining slags single, it is impossible to meet the needs of cord steel and the production of hyperfine cutting wire steel
Deficiency, the object of the present invention is to provide a kind of strong to steel inclusion adsorption capacity, meltdown property, foams performance, viscosity, alkali
Degree etc. can meet the LF furnace refining slags of cord steel and hyperfine cutting wire steel production requirement.
The present invention concrete technical scheme be：One kind contains Cs2The LF stove refining slags of O, including following component：CaO、SiO2、
Al2O3、Cs2O、MgO；Wherein, the mass percent of each component is：
CaO：32%~42%；
SiO2：40%~52%；
Al2O3：No more than 8%；
Cs2O：No more than 15%；
MgO：Less than 5%.
Further, the basicity (w (CaO)/w (SiO of refining slag2)) in the range of 0.8~1.0.
Preferably, Cs in refining slag2The mass percent of O is 2%~8%.
Preferably, Al in refining slag2O3Mass percent be 5%~8%.
Preferably, the mass percent of MgO is no more than 3% in refining slag.
Preferably, the mass percent of CaO is 36%~42% in refining slag.
Preferably, SiO in refining slag2Mass percent be 45%~52%.
Compared with prior art, it is mainly the advantages of refining slag of the invention：
(1) viscosity of slag properly increases, and significantly improves the ability of LF refining slag dross inclusion adsorption；Size is at 5 μm in steel
The amount of inclusions above greatly reduces, and wire broken rate substantially reduces.
(2) performance such as the fusing point of slag, foam performance, viscosity, basicity is all in the scope of LF refining production requirement, Ge Xiangxing
Optimal cooperation can have been reached, can meet cord steel and hyperfine cutting wire steel production needs.
Brief description of the drawings
Fig. 1 is wire rod 4 in example 1#Field trash pattern.
Fig. 2 is wire rod 4 in example 2#Field trash pattern.
Embodiment
In order to enable those skilled in the art to more fully understand, technical scheme is practiced, with reference to specific
The present invention is further described for embodiment 1~2, but illustrated embodiment is not as a limitation of the invention.Selected steel in this experiment
Kind is C96V cutting wire steel, is a kind of hypereutectoid steel, objectives component is as shown in table 1.
Table 1 tests steel grades/wt%
Embodiment 1
One kind contains Cs2The LF stove refining slags of O are comprised the following steps using process：
According to design principle of the present invention, C96V cutting wires steel smelting LF furnace refining slags, are combined as multiple by heterogeneity
Component prescription, the condition of (mass percent of chemical composition) such as table 2, is not difficult to calculate the quality of required raw material；Again will be above-mentioned
The raw material weighed in proportion melts uniformly in mineral hot furnace, natural cooling after coming out of the stove；Broken processing pack is to be used.
The LF refining of C96V cutting wire steel is carried out according to formula table 2 Suo Shi, result of the test is as shown in table 3.
2 cord steel of table and hyperfine cutting wire steel LF refining slag formula (wt%)
Note：MgO ＜ 5wt% in slag.
The component (wt%) of 3 C96V cutting wire steel of table
Cutting wire steel prepared by embodiment 1, field trash is mainly SiO in the wire rod after rolling2-MnO-Al2O3With
SiO2-CaO-Al2O3It is two major classes, morphotropism is good, and quantity is few, and size is small.By metallographic and scanning electron microscope analysis, in wire rod
500mm2Area in, the amount of inclusions distribution situation in each size range is as shown in table 4.From table 4, it can be seen that LF refining
Cs is added in slag2After O, the amount of inclusions of the size more than 5 μm greatly reduces in steel.
The amount of inclusions and Size Distribution situation in 4 wire rod of table
By 0#(the Cs containing 0.00wt% in LF refining slag2) and 4 O#(the Cs containing 10.00wt% in LF refining slag2Cutting O)
Cutting wire steel rolling into wire rod, be then drawn into diameter be respectively 70 μm cutting wire and 120 μm of steel cord, carry out drawing inspection
Survey and trial application, its wire broken rate situation are as shown in table 5.As can be seen from Table 5, with blank control group 0#Compare, through containing
10wt%Cs2After the LF refining Slag treatment of O, 4#70 μm of the cutting wire and 120 μm of steel cord of group steel production, wire broken rate is significantly
Reduce.
5 steel wire wire broken rate situation of table
Embodiment 2
One kind contains Cs2The LF stove refining slags of O are comprised the following steps using process：
According to design principle of the present invention, C96V cutting wires steel smelting LF furnace refining slags, are combined as multiple by heterogeneity
Component prescription, the condition of (mass percent of chemical composition) such as table 6, is not difficult to calculate the quality of required raw material；Again will be above-mentioned
The raw material weighed in proportion melts uniformly in mineral hot furnace, natural cooling after coming out of the stove；Broken processing pack is to be used.
The LF refining of C96V cutting wire steel is carried out according to formula table 6 Suo Shi, result of the test is as shown in table 7.
6 cord steel of table and hyperfine cutting wire steel LF refining slag formula (wt%)
Note：MgO ＜ 5wt% in slag.
The component (wt%) of 7 C96V cutting wire steel of table
Cutting wire steel prepared by embodiment 2, field trash is mainly SiO in the wire rod after rolling2-MnO-Al2O3With
SiO2-CaO-Al2O3It is two major classes, morphotropism is good, and quantity is few, and size is small.By metallographic and scanning electron microscope analysis, in wire rod
500mm2Area in, the amount of inclusions distribution situation in each size range is as shown in table 8.As can be seen from Table 8, LF refining
Cs is added in slag2After O, the amount of inclusions of the size more than 5 μm greatly reduces in steel.
The amount of inclusions and Size Distribution situation in 8 wire rod of table
By 0#(the Cs containing 0.00wt% in LF refining slag2) and 4 O#(the Cs containing 10.00wt% in LF refining slag2Cutting O)
For cutting wire steel rolling into wire rod, it is respectively 65 μm of cutting wires and 115 μm of steel cord to be then drawn into diameter, carries out drawing detection
And trial application, its wire broken rate situation are as shown in table 9.As can be seen from Table 9, with blank control group 0#Compare, through containing
10wt%Cs2After the LF refining Slag treatment of O, 4#65 μm of the cutting wire and 115 μm of steel cord of group steel production, wire broken rate is significantly
Reduce.
9 steel wire wire broken rate situation of table
In conclusion the above embodiments are merely illustrative of the technical solutions of the present invention, and rather than its limitations, guarantor of the invention
Scope not limited to this is protected, any one skilled in the art can show and easy in the technical scope of present disclosure
The simple change or equivalence replacement for the technical solution that insight obtains, belong to protection scope of the present invention.
Claims (10)
1. one kind contains Cs2The LF stove refining slags of O, it is characterised in that including following component：CaO、SiO2、Al2O3、Cs2O、MgO；
Wherein, the mass percent of each component is：
CaO：32%~42%；
SiO2：40%~52%；
Al2O3：No more than 8%；
Cs2O：No more than 15%；
MgO：Less than 5%.
2. according to claim 1 contain Cs2The LF stove refining slags of O, it is characterised in that the basicity (w (CaO)/w of refining slag
(SiO2)) in the range of 0.8~1.0.
3. according to claim 1 or 2 contain Cs2The LF stove refining slags of O, it is characterised in that：Cs in refining slag2The quality of O
Percentage is 2%~8%.
4. according to claim 1 or 2 contain Cs2The LF stove refining slags of O, it is characterised in that：Al in refining slag2O3Matter
It is 5%~8% to measure percentage.
5. according to claim 3 contain Cs2The LF stove refining slags of O, it is characterised in that：Al in refining slag2O3Quality hundred
Divide than being 5%~8%.
6. contain Cs according to claim 1 or 2 or 52The LF stove refining slags of O, it is characterised in that：The matter of MgO in refining slag
It is no more than 3% to measure percentage.
7. according to claim 3 contain Cs2The LF stove refining slags of O, it is characterised in that：The quality percentage of MgO in refining slag
Than for no more than 3%.
8. according to claim 4 contain Cs2The LF stove refining slags of O, it is characterised in that：The quality percentage of MgO in refining slag
Than for no more than 3%.
9. contain Cs according to claim 1 or 2 or 5 or 7 or 82The LF stove refining slags of O, it is characterised in that：In refining slag
The mass percent of CaO is 36%~42%.
10. contain Cs according to claim 1 or 2 or 5 or 7 or 82The LF stove refining slags of O, it is characterised in that：In refining slag
SiO2Mass percent be 45%~52%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711202474.4A CN107955859A (en) | 2017-11-27 | 2017-11-27 | One kind contains Cs2The LF stove refining slags of O |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711202474.4A CN107955859A (en) | 2017-11-27 | 2017-11-27 | One kind contains Cs2The LF stove refining slags of O |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107955859A true CN107955859A (en) | 2018-04-24 |
Family
ID=61962072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711202474.4A Pending CN107955859A (en) | 2017-11-27 | 2017-11-27 | One kind contains Cs2The LF stove refining slags of O |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111979439A (en) * | 2020-08-21 | 2020-11-24 | 江苏隆达超合金航材有限公司 | Containing Cs2Refining slag for electroslag furnace of O |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1201833A (en) * | 1998-05-05 | 1998-12-16 | 宝山钢铁(集团)公司 | Low alkaline composite slag for steel liquid improvement out of furnace |
| JP2002167647A (en) * | 2000-11-27 | 2002-06-11 | Sumitomo Metal Ind Ltd | Si KILLED STEEL HAVING EXCELLENT FATIGUE STRENGTH AND ITS PRODUCTION METHOD |
| CN1778972A (en) * | 2004-11-17 | 2006-05-31 | 首钢总公司 | Improvement of impurities state in steel from calcium silicate |
| CN103421930A (en) * | 2012-05-17 | 2013-12-04 | 张延大 | Novel tire cord steel refined material formula and preparation method thereof |
-
2017
- 2017-11-27 CN CN201711202474.4A patent/CN107955859A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1201833A (en) * | 1998-05-05 | 1998-12-16 | 宝山钢铁(集团)公司 | Low alkaline composite slag for steel liquid improvement out of furnace |
| JP2002167647A (en) * | 2000-11-27 | 2002-06-11 | Sumitomo Metal Ind Ltd | Si KILLED STEEL HAVING EXCELLENT FATIGUE STRENGTH AND ITS PRODUCTION METHOD |
| CN1778972A (en) * | 2004-11-17 | 2006-05-31 | 首钢总公司 | Improvement of impurities state in steel from calcium silicate |
| CN103421930A (en) * | 2012-05-17 | 2013-12-04 | 张延大 | Novel tire cord steel refined material formula and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111979439A (en) * | 2020-08-21 | 2020-11-24 | 江苏隆达超合金航材有限公司 | Containing Cs2Refining slag for electroslag furnace of O |
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Application publication date: 20180424 |
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