CN109382489A - A kind of carbon aluminium-killed steel crystallizer protecting residue - Google Patents
A kind of carbon aluminium-killed steel crystallizer protecting residue Download PDFInfo
- Publication number
- CN109382489A CN109382489A CN201710678249.1A CN201710678249A CN109382489A CN 109382489 A CN109382489 A CN 109382489A CN 201710678249 A CN201710678249 A CN 201710678249A CN 109382489 A CN109382489 A CN 109382489A
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- Prior art keywords
- slag
- covering slag
- killed steel
- sio
- steel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/10—Supplying or treating molten metal
- B22D11/11—Treating the molten metal
- B22D11/111—Treating the molten metal by using protecting powders
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Continuous Casting (AREA)
Abstract
The invention discloses a kind of carbon aluminium-killed steel crystallizer protecting residue, the technical issues of manufacturing cost for mainly solving Mold Flux during existing continuous casting carbon aluminium-killed steel is high, the easy slag of covering slag causes steel class defect.The technical solution adopted by the present invention is that: a kind of carbon aluminium-killed steel crystallizer protecting residue, the weight percent of constituent are as follows: SiO230-40%, CaO 26-36%, Al2O35-10%, MgO 1-1.5%, Na2O 4-8%, F‑1-3%, TC≤ 3.0%, Li2O≤0.5%；Fe2O30.3-0.7%, the dual alkalinity (CaO/SiO of the covering slag2) it is 0.85~0.95.The viscosity of covering slag of the present invention is high, and manufacturing cost is low, the generation of steel class defect when effectivelying prevent being poured carbon aluminium-killed steel.
Description
Technical field
The invention belongs to metal smelt auxiliary material technical fields, are related to crystallizer protection in conventional slab caster casting molten steel production
Slag, in particular to a kind of carbon aluminium-killed steel crystallizer protecting residue.
Background technique
The metallurgical function material important as continuous casting process, covering slag play adiabatic heat-insulation in crystallizer, prevent molten steel
Secondary oxidation, the effect for absorbing non-metallic inclusion, lubrication and Heat Transfer Control.The using effect of covering slag directly affects continuous casting
Slab quality.
After the rolling of low carbon aluminum-killed steel plate base hot rolling, some also needs to make by cold rolling as appliance plate etc.
With final finished specification is thin, surface quality requirements are high, and it is more prominent to be particularly due to surface defect caused by field trash, seriously
Plate appearance and its service performance are influenced, by being sampled energy spectrum analysis to rejected region, is found in continuous casting process crystallizer
Molten mold flux is involved at meniscus and is captured by initial solidification shell, and defect caused by can not being eliminated in hot rolling；This is also state
Inside and outside iron and steel enterprise insoluble quality problems always, it is considered to be common and be the chronic disease for being difficult to eliminate.
Research in terms of in relation to crystallizer protecting residue slag mechanism has a large amount of document report, and research method uses numerical value
The methods of simulation, hydraulic model trial, have found a variety of slag phenomenons especially by hydraulic model trial, and summarize following slag machine
Reason: 1) pass through the rising reflux stream stock of continuous cast mold narrow side；2) shearing force that unstable reflux generates；3) periodically exist
The mouth of a river non-stationary flow that nearby vortex region is formed；4) the big Argon Bubble from water-gap outlets to surface；5) water-gap outlets cloth stream is uneven
It is even to cause；6) under higher steel -passing amount, in steel-slag interface aggregates foam.These application of results are main in actual production process
If by the castability that improves molten steel, using automatic liquid surface control, the reasonable gate structure size of selection, insertion depth and
Argon blowing rate range etc. technical measures realize the control that slag phenomenon frequently occurs.
It is prevented outside covering slag slag except through control crystallizer flow field, the physical property of covering slag also has weight to slag
It influences, is increasingly valued by people.
To control dreg defect, the prior art generallys use high surface tension covering slag, that is, increases the table of covering slag
Face tension, to reduce continuous casting slag occurrence probability.But the Li of supplying high level is usually required in this kind of covering slag2O, due to
Lithium obtains market price height, and every increase mass percentage is 1%Li in covering slag2O, covering slag manufacturing cost are then increase accordingly
3000 yuan/ton, and then carbon aluminium-killed steel manufacturing cost is caused to be significantly increased.
The Chinese patent application file of application publication number CN103128240A discloses a kind of low-carbon steel continuous casting crystallizer guarantor
Slag is protected, to improve low-carbon steel protecting slag surface tension, Li in covering slag2O content leads to mild steel between 3.6-8.2%
Manufacturing cost is significantly increased.
The Chinese patent application file of application publication number CN105436445A discloses a kind of high viscosity continuous casting covering slag, solution
Certainly presently, there are covering slag viscosity it is lower, easily enter molten steel and cause the deficiencies of rolling rear steel defect.The patent mainly passes through
A certain amount of Al is added in covering slag2O3Improve the viscosity of covering slag, but in covering slag still containing 5% Li2O, covering slag
Manufacturing cost it is high.
Summary of the invention
The object of the present invention is to provide a kind of carbon aluminium-killed steel crystallizer protecting residues, mainly solve existing continuous casting
The technology that the manufacturing cost of Mold Flux is high during carbon aluminium-killed steel, the easy slag of covering slag causes steel class defect
Problem, covering slag of the present invention spreadability in crystallizer is preferable, even flame, no slagging phenomenon, and liquid slag layer thickness is stablized, slag consumption
Rationally, the hot rolling steel class defect degradation rate of carbon aluminium-killed steel can be reduced to 0.5% hereinafter, section from existing 1.47%
About about 5,000,000 yuan/year of steel-making cost.
The technical solution adopted by the present invention is that a kind of carbon aluminium-killed steel crystallizer protecting residue, the weight of constituent
Measure percentage are as follows: SiO230-40%, CaO 26-36%, Al2O35-10%, MgO 1-1.5%, Na2O 4-8%, F-1-3%,
TC≤ 3.0%, Li2O≤0.5%；Fe2O30.3-0.7%, the dual alkalinity (CaO/SiO of the covering slag2) be 0.85~
0.95。
The physical property of the covering slag, viscosity at 1300 DEG C are 0.50-0.60PaS, fusing point (hemisphere point temperature
Degree) it is 1040-1080 DEG C；
The preparation method of above-mentioned carbon aluminium-killed steel crystallizer protecting residue, this method include, and raw material preparation → ingredient →
Stir and evenly mix → → mist projection granulating → finished product packing is slurried in water mill, wherein mixing stirring and the time is slurried each 60 minutes in water mill.
Raw material of the invention includes fluorite, calcite, clinker, soda ash, carbon black, graphite, wollastonite, sintered bauxite
And spodumene；The weight percent of covering slag raw material components of the present invention is fluorite 3-5%, calcite 1-5%, clinker 3-
8%, soda ash 8-12%, carbon black 0.5-1.5%, graphite 1.0-1.5%, wollastonite 50-60%, sintered bauxite 5-8%, spodumene
6-8%；Covering slag raw material of the present invention is the raw material of industry, the weight percent of described its constituent of raw material are as follows:
Fluorite: CaF2> 97%；
Calcite: CaO 51~56%；
Clinker: CaO 62~64%, SiO220~23%；
Soda ash: 50-58%；
Carbon black: C > 98.5%；
Graphite: > 95%；
Wollastonite: CaO 40~44%, SiO250~55%, Al2O3< 1.5%, MgO 1~3%；
Sintered bauxite: SiO23~7%, Al2O375~85%, MgO 1~3%, Fe2O32~4%；
Spodumene: SiO262~70%, Al2O320~25%, Li2O 5~8%.
The technical thought of covering slag of the present invention is as follows, and applicant has found the viscosity of covering slag by the hydraulic model trial of many years
(being simulated with the miscella of different viscosities) increases, and slag number is reduced；Production practices, which also turn out, selects highly viscous covering slag
The surface defect of cold-rolled steel sheet can also be greatly reduced, therefore uses the technical solution for improving covering slag viscosity；It meanwhile being control
Production cost, the Li in covering slag2O content needs to control in lower range；In lower Li2In the case where O content, to make to protect
Shield slag obtains the physical properties such as suitable fusing point, viscosity and then needs science configuration Na2O、F-Deng the additional amount of other flux.
The more existing carbon aluminium-killed steel of covering slag of the present invention embodies following features with crystallizer protecting residue:
1) there is lower basicity, since the solidification shrinkage rate of mild steel is lower, the shell thickness in crystallizer is also opposite
It is relatively thin, referring to Fig. 1.Therefore, uniform scull in order to obtain, needs to suitably control the heat transfer in crystallizer.Reduce covering slag
Dual alkalinity favorably reduce the setting temperature of covering slag and the crystallization ratio of slag film, enhance the lubricating function of liquid slag film, simultaneously
Also meniscus heat transfer is improved, improves melt cinder and flows into condition, increase covering slag consumption.
2) pulling rate of viscosity with higher, general sheet billet continuous casting production is higher, and the covering slag viscosity used is low, coordinates to pass
Heat and lubrication means are more mature, but covering slag viscosity reduces and will increase the generation of slag entrapment in mold probability, referring to fig. 2,3.Pass through
Fluid Dynamics discovery, viscosity increase, and slag reduces, and it is cold that production practices also turn out that the highly viscous covering slag of selection can also greatly reduce
The surface defect of rolled steel plate.
3)Li2O content is lower, and Li is added in covering slag2O can reduce fusing point, viscosity, so obtaining in low fluorine free-floride slag
Using referring to fig. 4.But as lithium price is surging, cause containing Li2O covering slag price further raises up.Covering slag reduces Li2After O,
Use Na2O、F-Same using effect can be taken to Deng substitution fluxing agent, and cost substantially reduces.
Covering slag of the present invention belongs to SiO2-CaO-Al2O3Slag system, has the characteristics that highly viscous, and it is low to be mainly used for continuous casting
The crystallizer of carbon steel is protected.
The present invention has following good effect compared with prior art: 1, the covering slag that the present invention obtains has low cost high viscous
The characteristics of spending, the generation of steel class defect when effectivelying prevent being poured carbon aluminium-killed steel.2, it using covering slag of the present invention, produces
The hot rolling steel class defect incidence of carbon aluminium-killed steel be reduced to 0.5% or less from existing 1.47%.
Detailed description of the invention
Fig. 1 is influence of the basicity to crystallization temperature
Fig. 2 is Al2O3Influence of the content to viscosity
Fig. 3 is Li2Influence of the O content to viscosity
Fig. 4 is Li2Influence of the O content to fusion temperature
Specific embodiment
It is for a more detailed description to the present invention below in conjunction with specific embodiment 1-3.
Embodiment 1, the weight percent of the constituent of crystallizer protecting residue are as follows: CaO 30.36%, SiO234.59%,
Li2O0.42%, Na2O 5.4%, F-1.35%, Al2O37.83%, MgO 1.19%, Fe2O30.53%, C 2.17%；Protection
Slag physical property, viscosity when fusing point is 1068 DEG C, 1300 DEG C are 0.565PaS.
The weight percent of its constituent of the raw material of crystallizer protecting residue described in embodiment 1 are as follows: fluorite 3%, Fang Xie
Stone 3%, clinker 5%, soda ash 10%, carbon black 1.2%, graphite 1%, wollastonite 55%, sintered bauxite 7%, spodumene
7%.
Referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, using embodiment 1 in slab caster upper mild steel, being poured section is
210mm*900~1100mm, pulling rate are 0.9m/min~1.5m/min, average 0.41Kg/ tons of steel of slag consumption, liquid slag layer thickness 8
~12mm.Test result surface, the high viscosity low carbon steel crystallizer protective slag spreadability is good, smog is few, after covering slag is added
Crystallizer top of the slag slugging is all right, does not bond, and is not crusted pilling.The smooth noresidue of the steel slab surface of casting, crystallization
Device electric thermo-couple temperature is very steady, the probability with low-down breakout prediction.By to rolling hot rolled coils degrading data pair
Than, it can be seen that the covering slag is for preventing slab dreg defect from having certain effect.
Embodiment 2, the weight percent of the constituent of crystallizer protecting residue are as follows: CaO 32.4%, SiO236.14%,
Li2O 0.45%, Na2O 4.86%, F-1.35%, Al2O37.61%, MgO 1.25%, Fe2O30.56%, C 2.46%.
Covering slag physical property, viscosity when fusing point is 1075 DEG C, 1300 DEG C are 0.573PaS.
The weight percent of its constituent of the raw material of crystallizer protecting residue described in embodiment 2 are as follows: fluorite 3%, Fang Xie
Stone 4%, clinker 6%, soda ash 9%, carbon black 1.2%, graphite 1.3%, wollastonite 57%, sintered bauxite 6.5%, spodumene
7.5%.
Referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, using embodiment 2 in slab caster upper mild steel, being poured section is
210mm*900~1100mm, pulling rate are 0.9m/min~1.5m/min, average 0.43Kg/ tons of steel of slag consumption, liquid slag layer thickness 8
~12mm.Test result surface, the high viscosity low carbon steel crystallizer protective slag spreadability is good, smog is few, after covering slag is added
Crystallizer top of the slag slugging is all right, does not bond, and is not crusted pilling.The smooth noresidue of the steel slab surface of casting, crystallization
Device electric thermo-couple temperature is very steady, the probability with low-down breakout prediction.By to rolling hot rolled coils degrading data pair
Than, it can be seen that the covering slag is for preventing slab dreg defect from having certain effect.
Embodiment 3, the weight percent of the constituent of crystallizer protecting residue are as follows: CaO 31.57%, SiO233.24%,
Li2O0.48%, Na2O 4.32%, F-2.03%, Al2O38.92%, MgO 1.20%, Fe2O30.62%, C 1.77%.It protects
Slag physical property is protected, viscosity when fusing point is 1059 DEG C, 1300 DEG C is 0.542PaS.
The weight percent of its constituent of the raw material of crystallizer protecting residue described in embodiment 3 are as follows: fluorite 4.5%, side
Solve stone 5%, clinker 7%, soda ash 8%, carbon black 0.8%, graphite 1%, wollastonite 50%, sintered bauxite 8%, spodumene
8%；
Referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, using embodiment 3 in slab caster upper mild steel, being poured section is
210mm*900~1100mm, pulling rate are 0.9m/min~1.5m/min, average 0.45Kg/ tons of steel of slag consumption, liquid slag layer thickness 8
~12mm.Test result surface, the high viscosity low carbon steel crystallizer protective slag spreadability is good, smog is few, after covering slag is added
Crystallizer top of the slag slugging is all right, does not bond, and is not crusted pilling.The smooth noresidue of the steel slab surface of casting, crystallization
Device electric thermo-couple temperature is very steady, the probability with low-down breakout prediction.By to rolling hot rolled coils degrading data pair
Than, it can be seen that the covering slag is for preventing slab dreg defect from having certain effect.
In addition to the implementation, the present invention can also have other embodiments.It is all to use equivalent substitution or equivalent transformation shape
At technical solution, fall within the scope of protection required by the present invention.
Claims (4)
1. a kind of carbon aluminium-killed steel crystallizer protecting residue, characterized in that the weight percent of its constituent are as follows: SiO230-
40%, CaO 26-36%, Al2O35-10%, MgO 1-1.5%, Na2O 4-8%, F-1-3%, TC≤ 3.0%, Li2O≤
0.5%；Fe2O30.3-0.7%, the dual alkalinity (CaO/SiO of the covering slag2) it is 0.85~0.95；Covering slag is at 1300 DEG C
When viscosity be 0.50-0.60PaS, fusing point (hemisphere point temperature) be 1040-1080 DEG C.
2. carbon aluminium-killed steel crystallizer protecting residue as described in claim 1, characterized in that the covering slag is by firefly
These raw materials of stone, calcite, clinker, soda ash, carbon black, graphite, wollastonite, sintered bauxite and spodumene press claim 1
At assignment system.
3. carbon aluminium-killed steel crystallizer protecting residue as described in claim 1, characterized in that the raw material group of the covering slag
The weight percent divided is fluorite 3-5%, calcite 1-5%, clinker 3-8%, soda ash 8-12%, carbon black 0.5-
1.5%, graphite 1.0-1.5%, wollastonite 50-60%, sintered bauxite 5-8%, spodumene 6-8%.
4. carbon aluminium-killed steel crystallizer protecting residue as claimed in claim 2 or claim 3, characterized in that its group of the raw material
It is fluorite at the weight percent of ingredient: CaF2> 97%；Calcite: CaO 51~56%；Clinker: CaO 62~
64%, SiO220~23%；Soda ash 50-58%；Carbon black C > 98.5%；Graphite > 95%；Wollastonite: CaO 40~44%,
SiO250~55%, Al2O3< 1.5%, MgO 1~3%；Sintered bauxite: SiO23~7%, Al2O375~85%, MgO 1~
3%, Fe2O32~4%；Spodumene: SiO262~70%, Al2O320~25%, Li2O 5~8%.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113263152A (en) * | 2021-04-14 | 2021-08-17 | 首钢集团有限公司 | Method for controlling surface banding chromatic aberration incidence rate of low-carbon aluminum killed steel after acid pickling |
| CN116005062A (en) * | 2023-03-08 | 2023-04-25 | 山西太钢不锈钢股份有限公司 | High-strength high-corrosion-resistance austenitic stainless steel cold-rolled coil and preparation method thereof |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5356454A (en) * | 1992-07-08 | 1994-10-18 | Kawasaki Steel Corporation | Mold powder for continuous casting |
| JPH11226712A (en) * | 1998-02-10 | 1999-08-24 | Kawasaki Steel Corp | Mold powder for casting high al-containing steel |
| JPH11254109A (en) * | 1998-01-09 | 1999-09-21 | Sumitomo Metal Ind Ltd | Continuous casting mold powder of high manganese round slab |
| JP2005040835A (en) * | 2003-07-23 | 2005-02-17 | Sumitomo Metal Ind Ltd | Mold powder for continuous casting of steel |
| CN101254525A (en) * | 2008-02-22 | 2008-09-03 | 马鞍山钢铁股份有限公司 | Special-shaped continuous casting containing manganses low-alloy high-strength steel crystallizer protection slag |
| CN101254526A (en) * | 2008-02-22 | 2008-09-03 | 马鞍山钢铁股份有限公司 | Special-shaped billet casting machine continuous casting weathering steel crystallizer protection slag |
| CN101612653A (en) * | 2008-06-23 | 2009-12-30 | 宝山钢铁股份有限公司 | Mold powder for continuous casting of high aluminium-titanium-rare earth steel |
| CN101875095A (en) * | 2009-12-04 | 2010-11-03 | 武汉钢铁(集团)公司 | High-viscosity covering slag used for low-carbon aluminum-killed steel |
| CN101885043A (en) * | 2009-05-13 | 2010-11-17 | 上海梅山钢铁股份有限公司 | High-casting speed mold flux |
| CN101947644A (en) * | 2010-08-28 | 2011-01-19 | 西峡龙成冶金材料有限公司 | High-manganese high-nitrogen low-nickel stainless steel plate blank continuous casting crystallizer covering slag and preparation method thereof |
| CN102019384A (en) * | 2010-12-08 | 2011-04-20 | 西峡龙成冶金材料有限公司 | High-viscosity continuous casting protective slag for solving slag inclusion on surface of low-carbon steel |
| CN102554162A (en) * | 2011-12-31 | 2012-07-11 | 西峡龙成冶金材料有限公司 | Slab continuous casting mold covering slag and production method thereof |
| CN103128240A (en) * | 2011-11-28 | 2013-06-05 | 上海梅山钢铁股份有限公司 | Low carbon steel continuous casting crystallizer casting powder |
| CN104511580A (en) * | 2013-09-30 | 2015-04-15 | 上海梅山钢铁股份有限公司 | Molten steel solvent for low-carbon steel |
| CN105537547A (en) * | 2016-02-25 | 2016-05-04 | 唐山市鑫焱昌科技有限公司 | Low-cost high-alkalinity crystallizer casting powder used for continuous casting peritectic steel |
| CN106475536A (en) * | 2016-12-30 | 2017-03-08 | 河南省西保冶材集团有限公司 | A kind of P91 jet chimney steel continuous crystallizer protecting slag and preparation method thereof |
| CN106513607A (en) * | 2016-12-30 | 2017-03-22 | 河南省西保冶材集团有限公司 | Continuous casting crystallizer casting powder for 304 stainless steel and preparation method thereof |
-
2017
- 2017-08-10 CN CN201710678249.1A patent/CN109382489A/en active Pending
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5356454A (en) * | 1992-07-08 | 1994-10-18 | Kawasaki Steel Corporation | Mold powder for continuous casting |
| JPH11254109A (en) * | 1998-01-09 | 1999-09-21 | Sumitomo Metal Ind Ltd | Continuous casting mold powder of high manganese round slab |
| JPH11226712A (en) * | 1998-02-10 | 1999-08-24 | Kawasaki Steel Corp | Mold powder for casting high al-containing steel |
| JP2005040835A (en) * | 2003-07-23 | 2005-02-17 | Sumitomo Metal Ind Ltd | Mold powder for continuous casting of steel |
| CN101254525A (en) * | 2008-02-22 | 2008-09-03 | 马鞍山钢铁股份有限公司 | Special-shaped continuous casting containing manganses low-alloy high-strength steel crystallizer protection slag |
| CN101254526A (en) * | 2008-02-22 | 2008-09-03 | 马鞍山钢铁股份有限公司 | Special-shaped billet casting machine continuous casting weathering steel crystallizer protection slag |
| CN101612653A (en) * | 2008-06-23 | 2009-12-30 | 宝山钢铁股份有限公司 | Mold powder for continuous casting of high aluminium-titanium-rare earth steel |
| CN101885043A (en) * | 2009-05-13 | 2010-11-17 | 上海梅山钢铁股份有限公司 | High-casting speed mold flux |
| CN101875095A (en) * | 2009-12-04 | 2010-11-03 | 武汉钢铁(集团)公司 | High-viscosity covering slag used for low-carbon aluminum-killed steel |
| CN101947644A (en) * | 2010-08-28 | 2011-01-19 | 西峡龙成冶金材料有限公司 | High-manganese high-nitrogen low-nickel stainless steel plate blank continuous casting crystallizer covering slag and preparation method thereof |
| CN102019384A (en) * | 2010-12-08 | 2011-04-20 | 西峡龙成冶金材料有限公司 | High-viscosity continuous casting protective slag for solving slag inclusion on surface of low-carbon steel |
| CN103128240A (en) * | 2011-11-28 | 2013-06-05 | 上海梅山钢铁股份有限公司 | Low carbon steel continuous casting crystallizer casting powder |
| CN102554162A (en) * | 2011-12-31 | 2012-07-11 | 西峡龙成冶金材料有限公司 | Slab continuous casting mold covering slag and production method thereof |
| CN104511580A (en) * | 2013-09-30 | 2015-04-15 | 上海梅山钢铁股份有限公司 | Molten steel solvent for low-carbon steel |
| CN105537547A (en) * | 2016-02-25 | 2016-05-04 | 唐山市鑫焱昌科技有限公司 | Low-cost high-alkalinity crystallizer casting powder used for continuous casting peritectic steel |
| CN106475536A (en) * | 2016-12-30 | 2017-03-08 | 河南省西保冶材集团有限公司 | A kind of P91 jet chimney steel continuous crystallizer protecting slag and preparation method thereof |
| CN106513607A (en) * | 2016-12-30 | 2017-03-22 | 河南省西保冶材集团有限公司 | Continuous casting crystallizer casting powder for 304 stainless steel and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113263152A (en) * | 2021-04-14 | 2021-08-17 | 首钢集团有限公司 | Method for controlling surface banding chromatic aberration incidence rate of low-carbon aluminum killed steel after acid pickling |
| CN116005062A (en) * | 2023-03-08 | 2023-04-25 | 山西太钢不锈钢股份有限公司 | High-strength high-corrosion-resistance austenitic stainless steel cold-rolled coil and preparation method thereof |
| CN116005062B (en) * | 2023-03-08 | 2024-04-26 | 山西太钢不锈钢股份有限公司 | High-strength high-corrosion-resistance austenitic stainless steel cold-rolled coil and preparation method thereof |
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Application publication date: 20190226 |