CN107287520A - A kind of Ultra-low carbon composite rolling steel and sheet blank continuous casting production method - Google Patents
A kind of Ultra-low carbon composite rolling steel and sheet blank continuous casting production method Download PDFInfo
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- CN107287520A CN107287520A CN201710455373.1A CN201710455373A CN107287520A CN 107287520 A CN107287520 A CN 107287520A CN 201710455373 A CN201710455373 A CN 201710455373A CN 107287520 A CN107287520 A CN 107287520A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/004—Very low carbon steels, i.e. having a carbon content of less than 0,01%
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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
-
- 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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- 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
- C21C7/10—Handling in a vacuum
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
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- Engineering & Computer Science (AREA)
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- Metallurgy (AREA)
- Organic Chemistry (AREA)
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- Treatment Of Steel In Its Molten State (AREA)
- Metal Rolling (AREA)
Abstract
A kind of Ultra-low carbon composite rolling steel, its component and wt% are：C：No more than 0.01%, Mn：0.18~0.30%, Si：0~0.02%, Als：No more than 0.005%, P：0~0.03%, S：0~0.01%, N：0.002~0.007%.Sheet blank continuous casting production method：The deep desulfurization of molten iron pretreatment；Converter smelting；LF stoves are refined；RH application of vacuum；Casting；Process after progress.The present invention is realized to be produced in CSP producing line, and be mingled with steel and be reduced to less than 4%, while splitting control within 1%, and entire volume is set to be no more than 20MP in the strength fluctuation of length direction no more than 30 μm, entire volume in the thickness fluctuation of length direction, surface quality is good.
Description
Technical field
The present invention relates to a kind of Ultra-low carbon composite rolling steel and production method, a kind of Ultra-low carbon composite rolling is particularly belonged to
With steel and sheet blank continuous casting production method, the production of CSP CSPs producing line is particularly suitable for use in.
Background technology
Ultra-low carbon composite rolling with steel due to subsequently also to carry out pickling, slitting and composite rolling, therefore to surface
Quality, plate shape, thickness and precision etc. require very high.The defect such as surface is not allow for being mingled with, side is split, otherwise in follow-up composite rolling mistake
Easily gassing, peeling, problems of crack in journey, have a strong impact on composite rolling effect.
Before making the present invention, the Ultra-low carbon composite rolling is mainly produced with steel using traditional hot rolling producing line, i.e., using slab
Base is produced.Produced using traditional heavy slab and conventional hot rolling producing line, its deficiency existed is：（1）Product thickness
Precision is low：The Ultra-low carbon composite rolling is pickling, slitting, composite rolling with steel subsequent process flow, horizontal after customer requirement slitting
To and longitudinal thickness difference be no more than 30 μm, so to hot rolling stock roll thickness and precision require it is very high, it is desirable to convexity be no more than 50 μ
M, wedge shape is no more than 20 μm, and longitudinal thickness difference must be controlled within 30 μm, and conventional hot rolling producing line is difficult to fully meet；（2）
Properties of product lack of homogeneity：Require that the fluctuation of total length rolling load is small during composite rolling, that is, require hot rolling stock roll total length intensity wave
Move within 20MPa, and conventional hot rolling producing line because of increasing speed rolling the reason for, cause strip to exist end to end with middle portion temperature certain inclined
Difference, therefore total length performance inconsistency is larger；（3）There is edge upwarping defect：During conventional hot rolling producing line production, apart from edge 15-
There is edge upwarping defect within 30mm, on the one hand reduce lumber recovery, on the other hand also result in more quality objection and complain
And compensation；（4）Production cycle is long：Connect from contract and order coil of strip delivery, typically need the time of 1 month, the phase is handed over for customer requirement
More urgent contract, it is difficult to which punctual delivery meets customer requirement.
CSP producing line has that flow is short, pulling rate fast, steel-making steel rolling is rigidly connected, constant speed rolling temperature is uniform
The features such as property is good.If CSP can not only be given full play in CSP producing line produces the steel
Producing line advantage, moreover it is possible to preferably meet customer need.But exist to be mingled with simultaneously and split defect with side, cause the problem of degradation rate is high,
It is mingled with when its is serious and splits degradation rate with side and then reach 30%.The applicant was tested and counted from 2015, and it is mingled with splits with side
Defect quality objection rate reaches 8%, causes very big economic loss, causes qualification rate to decline, production cost increase, serious restriction
The wound effect of the variety steel and marketing.
Analyzed according to the deficiency present on, it is as a result narrower mainly due to the mouth of a river wrapped in sheet blank continuous casting,
Field trash easily blocks the mouth of a river, and stopper unusual fluctuations are caused often, causes to break when serious and pours caused.Equipment is understood can not arbitrarily change
Under the premise of, above-mentioned problem is solved, i.e., to improve pourability of molten steel, then inclusion content in melting steel must be denatured；
Again also there is the characteristics of pulling rate is fast in the producing line, endogenous inclusion in molten steel from fully floating, is easily caused slag, be mingled with and
Slag defect.Dimension is big with the conventional producing line difficulty of steel nose using this producing line production Ultra-low carbon composite rolling.In addition, also there is strand
Intensity of cooling is big, and edge cooling rate is fast, and edge is more crisp in casting cycle, while the problem of defect incidence is high is split, so to ultralow
The control of O content, edge water cooling, pulling rate and covering slag characteristic etc. propose higher requirement in carbon composite rolling steel.So,
Using CSP thin slab castings produce Ultra-low carbon composite rolling steel when, be mingled with side split mass defect control difficulty it is larger,
So that there is presently no the relevant report that use thin slab casting produces such Ultra-low carbon composite rolling steel, can not
With the solution for referring to and using for reference.
The content of the invention
It is an object of the invention to overcome deficiency present in above-mentioned document there is provided one kind in guarantee Ultra-low carbon composite rolling
On the premise of steel performance, realization is produced in CSP producing line, and is mingled with steel and can be reduced to 4%
Hereinafter, while splitting to control within 1%, surface quality good Ultra-low carbon composite rolling steel and sheet blank continuous casting producer
Method.
The present invention can also be realized：CSP CSP producing line product thicknesses precision can be played high, entire volume is existed
The thickness fluctuation of length direction is no more than 20MPa no more than 30 μm, entire volume in the strength fluctuation of length direction, can effectively solve again
Strand is mingled with the conditions of CSP thin slab castings splits problem with side, obtains the good Ultra-low carbon composite rolling of surface quality and uses
Steel.
Realize the technical measures of above-mentioned purpose
A kind of Ultra-low carbon composite rolling steel, its component and weight percent content are：C：No more than 0.01%, Mn：0.18~
0.30%, Si：0~0.02%, Als：No more than 0.005%, P：0~0.03%, S：0~0.01%, N：0.002~0.007%, remaining
For Fe and inevitable impurity.
Preferably：C weight percent content is 0.003 ~ 0.01%.
Preferably：Mn weight percent content is 0.20 ~ 0.30%.
Preferably：N weight percent content is 0.003~0.007%.
A kind of sheet blank continuous casting production method of Ultra-low carbon composite rolling steel, its step：
1）The deep desulfurization of molten iron pretreatment, and control S≤0.0015%；
2）Converter smelting is carried out, and controls P≤0.015% in endpoint molten steel；After tapping plus C powder deoxidations, added C powder amount with up to
Oxygen content into molten steel is defined in 600 ~ 750ppm；
3）Refined in LF stoves, the temperature of molten steel is at 1620-1660 DEG C in control refining furnace；
4）RH application of vacuum is carried out, in the decarburization of RH stoves, deoxidation and alloying, and controls vacuum to terminate rear oxygen content in 30-
70ppm, Als≤0.006%；
5) base is cast into, whole process uses protective casting, and slab thickness control is in 65 ~ 70mm, casting speed 3.5-4.2m/min, control
Liquid level fluctuation of crystallizer processed is within ± 5mm；
In strand casting cycle, the average cooling water inflow of control is in 1.75~2.07L/Kg steel, and edge cool water quantity is according to average cooling
The 65 ~ 75% of water are carried out；
Using Na2Low Na covering slag of the O content below 4%, and the viscosity of the slag is required in 0.12-0.28Pa.s, basicity exists
0.90-0.96, fusing point is at 1120-1170 DEG C；
6）Process after progress.
Preferably：Casting speed is in 3.6 ~ 4.0m/min.
Preferably：Average cooling water inflow is in 1.77~1.83L/ Kg steel, and edge cool water quantity is according to the 65 of average cooling water inflow
~ 70% is carried out.
The mechanism and effect of each element and main technique in the present invention：
C：The purpose designed from Ultra-low carbon is in order to obtain ferritic structure as much as possible, to reduce the Fe in structure of steel3C
Phase, the excellent ferritic structure of plasticity and toughness is conducive to follow-up composite rolling.Meanwhile, by C content control below 0.01%, to the greatest extent
The solid solution C content in ferrite is likely to reduced, ferritic structure is obtained the purification of profound level, it is subsequently good with ductility to be conducive to
Metal composite rolling.
Mn：Increase the relative quantity of steel medium pearlite, and tissue is attenuated, improve intensity.In the present invention, Mn is suitably reduced
Content, it is ensured that suitable intensity.Meanwhile, appropriate Mn can eliminate S adverse effect, from this point of view, and Mn is beneficial
Element, but content it is low when, effect is not notable.Accordingly, control Mn contents are 0.18 ~ 0.30%.
Si：Increase steel intensity, reduce steel ductility, be unfavorable for the follow-up cold deformation performance of strip, thus it is more low more
It is good.Si contents are controlled in the present invention 0~0.02%.
P：Phosphorus is residual elements in steel, and maximum harm is that segregation is serious, increases temper brittleness, significantly reduces the modeling of steel
Property and toughness, cause steel easy embrittlement in cold working, namely so-called " cold short " phenomenon.Phosphorus also has harmful effect to weldability,
Should strictly it control, control P content is 0~0.03% in the present invention.
S：Sulphur segregation in steel is serious, deteriorates the quality of steel.At high temperature, the plasticity of steel is reduced, is a kind of harmful element,
It is easily caused the hot-short phenomenon of steel.Therefore sulphur should be controlled strictly, control S contents are 0~0.01% in the present invention.
Als：Als contents exist with O to be balanced, according to the actual control situation of field trash, and control Als contents do not surpass in the present invention
Cross 0.005%.
Why the present invention controls vacuum to terminate rear oxygen content in 30-70ppm, Als≤0.006%；It is in order to avoid leaving from station
[O] is too low, and [Als] is too high, and casting cycle produces Al2O3, nozzle clogging causes stopper to go up, to improve pourability of molten steel.Together
When, on the one hand [O] too high levels in steel can react with carbon in covering slag, produce gas；Another aspect cooling procedure
In [O] precipitation, can cause strand edge produce bubble, occur edge damage defect in the follow-up operation of rolling, thus control vacuum
Oxygen content is in 30-70ppm after end.
Why the present invention uses low Na covering slags（Na2O content is controlled below 4%）, control viscosity is in 0.12-
0.28Pa.s, basicity is in 0.90-0.96, and fusing point is at 1120-1170 DEG C.Partly in order to reducing attachment of the slag to oscillation mark
Power, is on the other hand that, in order to improve setting temperature, the three-decker for being stablized covering slag fusing is easy to improvement to be mingled with and side
Split.
The present invention realizes accurate control tapping O and vacuum O content leaving from station, coordinates whole process protection by controlling deoxidization technique
Casting, casting speed control, the reasonably optimizing of edge water rate control and covering slag physical and chemical index, are realized to being mingled with and side is split
Effectively control, obtains the good Ultra-low carbon composite rolling steel of surface quality.
The present invention is compared with prior art：
First, the present invention uses LF+RH duplex techniques, by controlling deoxidization technique, control each operation O content, ensureing steel
On the premise of water castability, inclusion content in melting steel is reduced.
Second, sheet blank continuous casting of the present invention is cast using whole process protection, rational pulling rate reduces liquid level unusual fluctuations, matched somebody with somebody
Low sodium covering slag is closed, basicity and viscosity is reduced, adhesive force of the slag to oscillation mark is reduced, improves inclusion defect.
Third, using edge weak cold technique in sheet blank continuous casting process of the present invention, and the fusing point of covering slag is properly increased, made
Covering slag fusing reaches stable three-decker, reduces side and splits defect.
Fourth, being produced instant invention overcomes thin slab casting, Ultra-low carbon composite rolling steel clamp is miscellaneous and side is split quality and lacked
The inferior position such as fall into control difficulty be larger, and give full play to the advantage of abbreviated system, obtain that thickness and precision is high, performance uniformity is good,
The good Ultra-low carbon composite rolling steel of surface quality, solves the big technology that restriction CSP producing lines produce composite rolling steel
Bottleneck.It is realized and carried out in CSP producing line on the premise of ensureing Ultra-low carbon composite rolling with steel performance
Produce, and be mingled with degradation in steel and be reduced to less than 4% by more than 18%, while splitting can be controlled within 1% by more than 12%, surface matter
Amount is good；CSP CSP producing line product thicknesses precision can be played again high, make entire volume in the thickness ripple of length direction
It is dynamic to be no more than 20MPa in the strength fluctuation of length direction no more than 30 μm, entire volume, CSP sheet blank continuous casting works can be effectively solved again
Strand is mingled with the problems such as being split with side under the conditions of skill, obtains the good Ultra-low carbon composite rolling steel of surface quality.
Embodiment
With reference to embodiment, the present invention is described in further detail, is easy to more clearly understand the present invention, but it
Not to the present invention constitute limit.
Table 1 is various embodiments of the present invention and comparative example chemical composition comparative example；
Table 2 is the main technologic parameters list of various embodiments of the present invention and comparative example；
Table 3 is various embodiments of the present invention and comparative example mechanics properties testing situation;
Table 4 is various embodiments of the present invention and comparative example thickness and precision, surface quality situation after rolling.
Various embodiments of the present invention are produced according to following steps：
1）The deep desulfurization of molten iron pretreatment, and control S≤0.0015%；
2）Converter smelting is carried out, and controls P≤0.015% in endpoint molten steel；After tapping plus C powder deoxidations, added C powder amount with up to
Oxygen content into molten steel is defined in 600 ~ 750ppm；
3）Refined in LF stoves, the temperature of molten steel is at 1620-1660 DEG C in control refining furnace；
4）RH application of vacuum is carried out, in the decarburization of RH stoves, deoxidation and alloying, and controls vacuum to terminate rear oxygen content in 30-
70ppm, Als≤0.006%；
5) base is cast into, whole process uses protective casting, and slab thickness control is in 65 ~ 70mm, casting speed 3.5-4.2m/min, control
Liquid level fluctuation of crystallizer processed is within ± 5mm；
In strand casting cycle, the average cooling water inflow of control is in 1.75~2.07L/Kg steel, and edge cool water quantity is according to average cooling
The 65 ~ 75% of water are carried out；
Using Na2Low Na covering slag of the O content below 4%, and the viscosity of the slag is required in 0.12-0.28Pa.s, basicity exists
0.90-0.96, fusing point is at 1120-1170 DEG C；
6）Process after progress.
The various embodiments of the present invention of table 1 and comparative example chemical composition comparative example（wt%）
| Embodiment | C | Mn | Si | P | S | Als | N |
| 1 | 0.0057 | 0.230 | 0.004 | 0.011 | 0.0041 | 0.003 | 0.0053 |
| 2 | 0.0072 | 0.249 | 0.003 | 0.013 | 0.0060 | 0.002 | 0.0062 |
| 3 | 0.0040 | 0.255 | 0.004 | 0.013 | 0.0076 | 0.002 | 0.0043 |
| 4 | 0.0037 | 0.222 | 0.003 | 0.009 | 0.0067 | 0.004 | 0.0050 |
| 5 | 0.0054 | 0.227 | 0.003 | 0.013 | 0.0072 | 0.002 | 0.0049 |
| 6 | 0.0068 | 0.240 | 0.002 | 0.010 | 0.0081 | 0.001 | 0.0059 |
| 7 | 0.0081 | 0.249 | 0.004 | 0.011 | 0.0081 | 0.002 | 0.0068 |
| 8 | 0.0027 | 0.227 | 0.004 | 0.013 | 0.0095 | 0.003 | 0.0038 |
| 9 | 0.0045 | 0.236 | 0.003 | 0.012 | 0.0065 | 0.002 | 0.0049 |
| 10 | 0.0075 | 0.250 | 0.003 | 0.012 | 0.0089 | 0.002 | 0.0070 |
| Comparative example 1 | 0.0059 | 0.240 | 0.003 | 0.015 | 0.0090 | 0.007 | 0.0052 |
| Comparative example 2 | 0.0055 | 0.231 | 0.004 | 0.008 | 0.0070 | 0.009 | 0.0043 |
The various embodiments of the present invention of table 2 and comparative example main technologic parameters list
Note：When comparative example is produced, the covering slag Na contents height of use is higher than the present invention, i.e. Na in covering slag2O content is
5.7%, viscosity is in 0.20Pa.s, and basicity is 0.88, and fusing point is at 1110 DEG C.
The mechanics properties testing situation of the various embodiments of the present invention of table 3 and comparative example after rolling
The various embodiments of the present invention of table 4 and comparative example thickness and precision, surface quality situation
From table 3 it can be seen that the control of embodiment 1-10 coil of strip total lengths thickness fluctuation is within 30 μm, coil of strip total length strength fluctuation control
System is mingled with degradation rate not above 2.3% within 20Mpa, is bought while splitting degradation rate more than 1%, surface quality is good；And comparative example
1 degrades because of inclusion defect, and comparative example 2 is split defect because of side and degraded.
Above-described embodiment is only most preferably to enumerate, and is not the restriction to embodiments of the present invention.
Claims (7)
1. a kind of Ultra-low carbon composite rolling steel, its component and weight percent content are：C：No more than 0.01%, Mn：0.18~
0.30%, Si：0~0.02%, Als：No more than 0.005%, P：0~0.03%, S：0~0.01%, N：0.002~0.007%, remaining
For Fe and inevitable impurity.
2. a kind of Ultra-low carbon composite rolling steel as claimed in claim 1, it is characterised in that：C weight percent content is
0.003~0.01%。
3. a kind of Ultra-low carbon composite rolling steel as claimed in claim 1, it is characterised in that：Mn weight percent content is
0.20~0.30%。
4. a kind of Ultra-low carbon composite rolling steel as claimed in claim 1, it is characterised in that：N weight percent content is
0.003~0.007%.
5. a kind of sheet blank continuous casting production method of Ultra-low carbon composite rolling steel as claimed in claim 1, its step：
1）The deep desulfurization of molten iron pretreatment, and control S≤0.0015%；
2）Converter smelting is carried out, and controls P≤0.015% in endpoint molten steel；After tapping plus C powder deoxidations, added C powder amount with up to
Oxygen content into molten steel is defined in 600 ~ 750ppm；
3）Refined in LF stoves, the temperature of molten steel is at 1620-1660 DEG C in control refining furnace；
4）RH application of vacuum is carried out, in the decarburization of RH stoves, deoxidation and alloying, and controls vacuum to terminate rear oxygen content in 30-
70ppm, Als≤0.006%；
5) base is cast into, whole process uses protective casting, and slab thickness control is in 65 ~ 70mm, casting speed 3.5-4.2m/min, control
Liquid level fluctuation of crystallizer processed is within ± 5mm；
In strand casting cycle, the average cooling water inflow of control is in 1.75~2.07L/ Kg steel, and edge cool water quantity is according to average cooling
The 65 ~ 75% of water are carried out；
Using Na2Low Na covering slag of the O content below 4%, and the viscosity of the slag is required in 0.12-0.28Pa.s, basicity exists
0.90-0.96, fusing point is at 1120-1170 DEG C；
6）Process after progress.
6. a kind of sheet blank continuous casting production method of Ultra-low carbon composite rolling steel as claimed in claim 5, it is characterised in that：
Casting speed is in 3.6 ~ 4.0m/min.
7. a kind of sheet blank continuous casting production method of Ultra-low carbon composite rolling steel as claimed in claim 5, it is characterised in that：
Average cooling water inflow is carried out in 1.77~1.83L/ Kg steel, edge cool water quantity according to the 65 ~ 70% of average cooling water inflow.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108018403A (en) * | 2017-12-19 | 2018-05-11 | 中国地质大学（武汉） | A kind of method of thin-slab caster production automobile using extra-deep drawing steel |
| CN111299533A (en) * | 2020-04-03 | 2020-06-19 | 武汉钢铁有限公司 | Method for improving castability of ultra-low carbon steel produced by billet continuous casting machine |
| CN113333701A (en) * | 2021-06-03 | 2021-09-03 | 北京首钢股份有限公司 | Control method for linear slag winding defect on surface of cold-rolled sheet steel |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08260051A (en) * | 1995-03-27 | 1996-10-08 | Igeta Kouban Kk | Production of magnetic shielding material |
| CN101880820A (en) * | 2010-06-11 | 2010-11-10 | 武汉钢铁(集团)公司 | Steel-aluminum compound hot rolled steel with tensile strength of 310MPa and production method thereof |
| CN101880821A (en) * | 2010-06-11 | 2010-11-10 | 武汉钢铁(集团)公司 | Steel-aluminum compound hot rolled steel with tensile strength of 280MPa and production method thereof |
| CN102019727A (en) * | 2011-01-07 | 2011-04-20 | 哈尔滨松润金属制品有限公司 | Aluminium-clad steel strip for coolers and preparation method thereof as well as steel strip and aluminium alloy strip used thereby |
| CN104294146A (en) * | 2014-10-21 | 2015-01-21 | 武汉钢铁(集团)公司 | Hot-rolled base plate for steel aluminum composite plate and production method of hot-rolled base plate |
| CN105950979A (en) * | 2016-07-11 | 2016-09-21 | 钢铁研究总院 | Grain-oriented pure iron manufactured through secondary cold rolling method and method for manufacturing pure iron |
-
2017
- 2017-06-16 CN CN201710455373.1A patent/CN107287520B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08260051A (en) * | 1995-03-27 | 1996-10-08 | Igeta Kouban Kk | Production of magnetic shielding material |
| CN101880820A (en) * | 2010-06-11 | 2010-11-10 | 武汉钢铁(集团)公司 | Steel-aluminum compound hot rolled steel with tensile strength of 310MPa and production method thereof |
| CN101880821A (en) * | 2010-06-11 | 2010-11-10 | 武汉钢铁(集团)公司 | Steel-aluminum compound hot rolled steel with tensile strength of 280MPa and production method thereof |
| CN102019727A (en) * | 2011-01-07 | 2011-04-20 | 哈尔滨松润金属制品有限公司 | Aluminium-clad steel strip for coolers and preparation method thereof as well as steel strip and aluminium alloy strip used thereby |
| CN104294146A (en) * | 2014-10-21 | 2015-01-21 | 武汉钢铁(集团)公司 | Hot-rolled base plate for steel aluminum composite plate and production method of hot-rolled base plate |
| CN105950979A (en) * | 2016-07-11 | 2016-09-21 | 钢铁研究总院 | Grain-oriented pure iron manufactured through secondary cold rolling method and method for manufacturing pure iron |
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| CN108018403A (en) * | 2017-12-19 | 2018-05-11 | 中国地质大学（武汉） | A kind of method of thin-slab caster production automobile using extra-deep drawing steel |
| CN111299533A (en) * | 2020-04-03 | 2020-06-19 | 武汉钢铁有限公司 | Method for improving castability of ultra-low carbon steel produced by billet continuous casting machine |
| CN113333701A (en) * | 2021-06-03 | 2021-09-03 | 北京首钢股份有限公司 | Control method for linear slag winding defect on surface of cold-rolled sheet steel |
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