CN109694999A - A kind of cold rolling glassed steel and its manufacturing method - Google Patents
A kind of cold rolling glassed steel and its manufacturing method Download PDFInfo
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- CN109694999A CN109694999A CN201710983275.5A CN201710983275A CN109694999A CN 109694999 A CN109694999 A CN 109694999A CN 201710983275 A CN201710983275 A CN 201710983275A CN 109694999 A CN109694999 A CN 109694999A
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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
- C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0226—Hot rolling
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0236—Cold rolling
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
-
- 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
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
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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
-
- 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
-
- 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
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
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- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Sheet Steel (AREA)
Abstract
The present invention provides a kind of cold rolling glassed steel and its manufacturing methods, the steel plate ingredient is by weight percentage: C:0.002%~0.006%, Si:0.010%~0.030%, Mn:0.10%~0.30%, P :≤0.015%, S:0.010%~0.030%, Al:0.010%~0.050%, N:0.0015%~0.0050%, Ti:0.060%~0.10%, it further include the one or more of Mo:0.10%~0.50%, Ca:0.001%~0.003%, Mg:0.001%~0.003%, surplus is Fe and inevitable impurity.Manufacturing method includes molten iron pretreatment, converter smelting, refining, continuous casting, hot rolling, cold rolling, continuous annealing, has excellent fish scaling resistance, adhesion property, processability using cold rolling glassed steel produced by the invention, and manufacturing method is simple, cost is relatively low.
Description
Technical field
The invention belongs to cold rolled sheet production field more particularly to a kind of cold rolling glassed steel and its manufacturing methods.
Background technique
Cold rolling enamelled pressed steel plays highly important effect in national economy, in daily life with the relationship of people
Very closely, the industries such as light industry, household electrical appliances, metallurgy, chemical industry, building are widely used in, kitchen utensils, sanitary ware, burning are made
Oven, water heater liner, building fancy face plate, chemical reaction tank etc..
The performance requirement of cold rolling enamelled pressed steel mainly includes the side such as intensity, formability, scaling resistance, adherence and weldability
Face, the enamelled pressed steel of different purposes, it is desirable that have different comprehensive performances.It is that production enamelware is most fearful and most that wherein squama is quick-fried
It is difficult to the defect eradicated, and develops the most thorny issue that the cold rolling enameled steel products haveing excellent performance encounter at present.
Both at home and abroad research generally believe squama it is quick-fried be due to caused by the hydrogen in steel plate, enamelware production process
In, if having dissolved in a large amount of hydrogen atom in steel, it is cooling after hydrogen in steel reach supersaturation, then hydrogen will to external diffusion, and
Hydrogen is difficult to spread in enamel coating again, thus causes hydrogen and gathers between metal and enamel coating and exist in gaseous form.When
When the pressure of hydrogen is sufficiently large, enamel coating will be broken through and to generate squama quick-fried.It is mainly due to causing enamelware to generate the quick-fried hydrogen of squama
Into steel plate during pickling and enamel firing, so should also improve the anti-of steel plate itself other than improving enamel production technology
The quick-fried performance of squama.
As the method for enhancing molten Hydrogen Energy power, the quantity of two class hydrogen traps in steel can be improved.One kind is physics hydrogen trap, one
Class is chemical hydrogen trap.Dislocation, vacancy, crystal boundary etc. belong to physics hydrogen trap, and chemical hydrogen trap is then some and hydrogen has change
Learn field trash, the precipitated phase of affinity.The precipitated phase of Ti is as chemical hydrogen trap, in being used in cold rolling glassed steel very early,
Such as in the cold-rolling deep-punching glassed steel for having high punching performance requirement, Ti4C2S2, the precipitated phases such as TiN, TiC as hydrogen trap play weight
The effect wanted.In addition the elements such as Cu, B, RE are also used in hot rolling and cold-rolled steel sheet, have the precipitation for catching hydrogen effect to be formed
Phase.
The main method for improving cold rolling glassed steel fish scaling resistance at present is to make it in steel by adding appropriate alloying element
Hydrogen trap is formed in plate, is reached and is avoided hydrogen diffusion generation squama quick-fried.
Patent " ultra-low carbon cold-rolling deep-punching glassed steel and its production method " (publication number: CN101082107A).This method is raw
The chemical composition content of the ultra-low carbon cold-rolling deep-punching glassed steel of production are as follows: C:0.002%~0.005%, Si:0.004%~
0.020%, Mn:0.08%~0.13%, P:0.006%~0.020%, S:0.01%~0.035%, Als:0.010%~
0.040%, Ti:0.05%~0.09%, N≤0.004%, remaining is Fe and inevitable impurity.Compared with IF steel, this hair
The bright content for improving Ti and S is conducive to steel and Ti4C2S2 second phase particles is precipitated in process of production, effectively can fix and deposit
The H atom of Chu Gang makes H atom be not easy to come out from steel, so that enamel is not in that squama is quick-fried.But the invention Ti content still compared with
It is low, it not can guarantee carbon, nitrogen, sulphur and titanium form enough Second Phase Precipitation compounds, avoid the generation of steel plate scale explosion.
Invention " a kind of cold rolling Steel for enamel and its manufacturing method " (publication number: CN102899565A).This method production
Cold rolling glassed steel chemical composition content are as follows: C:0.002%~0.010%, Si≤0.03%, Mn:0.10%~0.40%, P≤
0.015%, S:0.018%~0.035%, Als:0.020%~0.070%, N:0.004%~0.010%, T=4C+
3.42N+1.5S+ △ Ti, Nb:0.005%~0.05%, Cu:0.01%~0.05%, while meeting △ Ti:0~0.02%,
Nb+ △ Ti >=0.02%, remaining is Fe and inevitable impurity.It is improved with azo-cycle stream technique and accurately controls the nitrogen in steel and contained
Amount reduces production cost, improves scaling resistance and adherence, and nitrogen content is higher in the invention, relatively difficult to achieve in actual production
Accurate control, not can guarantee and be sufficiently formed Second Phase Precipitation compound, avoid the generation of scale explosion.
Invention " a kind of low-carbon enamelled pressed steel and its manufacturing method " (publication number: CN105132806A).This method manufacture
Low-carbon enamelled pressed steel chemical component mainly contains: C≤0.010%, Si≤0.03%, Mn≤0.60%, P≤0.025%, S≤
0.035%, Al≤0.050%, N≤0.0080% and Fe and inevitable impurity element.This steel plate control nitrogen, sulphur exist
In suitable range, and the aluminium of certain content is controlled, retain a certain amount of carbon, controls the ratio of C, S；And enough titaniums are added,
Suitable copper, chromium, nickel and molybdenum are remained in steel to improve the adhesion property and fish scaling resistance of steel plate.The invention rely primarily on titanium with
The elements such as sulphur, carbon, nitrogen form irreversible hydrogen trap to improve fish scaling resistance, and Second Phase Precipitation species are single, if titanium
In the case that compound is formed and distribution cannot be controlled preferably, it is easy that template is made scale explosion occur.
Improve at present cold rolling glassed steel fish scaling resistance main method be by adding appropriate alloying element (such as Ti),
So that it is formed hydrogen trap in steel plate, reaches and avoid hydrogen diffusion generation squama quick-fried, effectively improve the fish scaling resistance of cold rolling glassed steel.
But this method increases production costs, and still can not largely improve the fish scaling resistance of cold rolling glassed steel, keep away completely
Exempt from the generation of burst porcelain defect.
Summary of the invention
It is an object of the invention to overcome the above problem and insufficient and provide a kind of chemical component by controlling steel plate and contain
Continuous annealing production technology is measured and optimized, promotes to be precipitated a large amount of precipitated phases in steel plate as hydrogen storage trap, improves the anti-squama of steel plate
The cold rolling glassed steel and its manufacturing method of quick-fried performance.
What the object of the invention was realized in:
A kind of cold rolling glassed steel, the ingredient of the steel plate are as follows by weight percentage: C:0.002%~0.006%, Si:
0.010%~0.030%, Mn:0.10%~0.30%, P :≤0.015%, S:0.010%~0.030%, Al:0.010%
~0.050%, N:0.0015%~0.0050%, Ti:0.060%~0.10% further include Mo:0.10%~0.50%, Ca:
0.001%~0.003%, the one or more of Mg:0.001%~0.003%, surplus are Fe and inevitable impurity.
It is as follows that present component designs reason:
Carbon (C): carbon is intensified element, and phosphorus content is higher, and the intensity of steel plate is higher, but plasticity reduces, and adds in titanium steel, due to
Titanium is carbide, and carbon electrode is easily and titanizing closes to form titanium carbide, Ti4C2S2 etc., and particle is thinner, small and dispersed
Titanium carbide granule is not only good storage hydrogen trap, improves fish scaling resistance, and the precipitation strength of titanium carbide can be improved steel
The intensity of plate.But if the phosphorus content in steel is excessively high, since carbon is the essential element for generating needle pore defect, in the application of slip
Cheng Zhonghui generates more serious needle pore defect, and carbon content is excessively high, and the formability and welding performance of steel are deteriorated, therefore C content
Scope control is 0.002%~0.006%.
Silicon (Si):: silicon is harmful element, is usually present in steel with solution, and the toughness and ductility of steel are reduced, and
Excessively high silicone content can reduce the adherence of enamel and steel.Therefore the control of Si content range is 0.010%~0.030%.
Manganese (Mn): a certain amount of Mn is present in steel, can improve the toughness of steel, and steel plate is made to have good stampability
Can, Mn can also generate stable manganese sulfide in conjunction with S and be precipitated as second phase particles, improve steel plate hydrogen storage performance, but manganese contains
Measure excessively high, then the adherence of enamel is deteriorated, be easy to produce bubble and stain, thus the control of Mn content range 0.10%~
0.30%.
Phosphorus (P): phosphorus is a kind of harmful element, increases and increases the brittleness of steel with content, deep drawability is made to be deteriorated, and phosphorus holds
Segregation on crystal boundary in Yi Gang generates bubble and stain in enamel firing, influences the surface quality of enamel, therefore phosphorus element content
More lower, better in steel, scope control is in P≤0.015%.
Sulphur (S): in general sulphur is all harmful element in steel, but sulphur plays beneficial work in the glassed steel of titaniferous
With.Sulphur can form manganese sulfide with manganese, can also form the Secondary phase particles such as titanium sulfide, sulphur titanium carbide with carbon, titanium etc., help to change
The fish scaling resistance of kind glassed steel.By adding titanium that can also be obviously improved vulcanization manganese fraction, single manganese sulfide is avoided the formation of
It is mingled with, is conducive to improve mouldability.Therefore the control of S content range is 0.010%~0.030%.
Aluminium (Al): aluminium is oxide and nitride forming element, and such compound, which is mingled with, is conducive to improve the anti-of glassed steel
The quick-fried performance of squama, but since the plasticity of alumina inclusion is poor, a large amount of alumina inclusion can seriously damage the processability of steel, simultaneously
Influence continuous casting working procedure castability.Therefore Al content scope control is 0.010%~0.050%.
Nitrogen (N): nitrogen is solid solution element, and nitrogen and titanium, aluminium etc. can form compound, is conducive to the anti-squama for improving glassed steel
Quick-fried performance, but nitrogen content is excessively high, the nitride particles that when high temperature is formed are often more and coarse, these field trashes there are serious
Damage the formability of steel plate.Therefore N content scope control is 0.0015%~0.0050%.
Titanium (Ti): titanium is strong carbon, nitride forming element.Titanium both can individually and carbon, nitrogen, sulphur form compound, can also
To form compound compound.The plasticity and scaling resistance of glassed steel can be improved after titanium fixed carbon, nitrogen and sulphur.Titanium and oxygen and nitrogen
Compound can be formed at very high temperatures, and the compounds property of formation is stablized, and the shadow by hot-working and enamel process is not easy
It rings, is conducive to the adherence for improving steel plate.Therefore the control of Ti content range is 0.060%~0.10%.
Molybdenum (Mo): molybdenum can be solid-solution in ferrite, austenite and carbide in steel, can be with iron, carbon when content is lower
Compound cementite is formed, the alloy carbide of molybdenum can be formed when content is higher.Molybdenum has solution strengthening effect to ferrite, simultaneously
Also the stability for improving carbide, to improve the fish scaling resistance of steel.Therefore the control of Mo content range 0.10%~
0.50%.
Calcium (Ca): being added microelements of calcium in steel, produce the oxide and sulfide of calcium, change sulfide in steel
Property and shape, such compound disperses distribution, have the effect of refinement crystal grain, make non-metallic inclusion more fine uniform, improve
The scaling resistance of steel.Therefore the control of Ca content range is 0.001%~0.003%.
Magnesium (Mg): magnesium is added in steel can refine field trash, and effectively rotten, reaction production is carried out to oxide, sulfide
Object is not easy to aggregate into big cluster, is distributed its even dispersion, improves the hydrogen penetrating quality of steel therefore the control of Mg content range exists
0.001%~0.003%.
The two of technical solution of the present invention are to provide a kind of manufacturing method of cold rolling glassed steel, including molten iron pretreatment-converter
Smelting-refining-continuous casting and hot rolling-cold rolling-continuous annealing,
Hot rolling: heating temperature: 1100~1250 DEG C, finishing temperature: 850~960 DEG C, coiling temperature: 650~750 DEG C.
Hot-rolled process uses higher heating temperature, and the austenite structure in steel can be made to homogenize, can also promote steel billet
In the sufficiently dissolution such as titanium compound such as TiS, Ti4C2S2, TiC for being precipitated, in hot rolling and cooling procedure, they can be with chemical combination
The form of object is precipitated again, forms hydrogen trap in the base in the distribution of small and dispersed state, improves the fish scaling resistance of steel plate.It adopts
With higher finishing temperature and coiling temperature, it can make steel plate that austenite structure occur in rolling and coiling process to ferrite group
The transformation knitted, and complete ferritic structure recrystallization and grow up with crystal grain.
Continuous annealing: annealing temperature: 700~900 DEG C, soaking time: 60~240s, slow cooling temperature: 650~720 DEG C, fastly
Cold temperature: 350~430 DEG C, overaging section temperature: 300~450 DEG C.
Steel plate realizes the recrystallization of ferritic structure in steel plate, crystal grain is grown up and recrystallization texture through continuous annealing process
Development.Main technologic parameters when annealing include temperature and time, using higher annealing temperature, can promote favorable texture
Development guarantees that cold rolling microstructure completes recrystallization and crystal grain is sufficiently grown up, also to improve the formability of finished product.；Overaging Duan Wen
Degree selects mainly to make to be precipitated in steel a large amount of cementites as hydrogen storage trap, improves fish scaling resistance.
The beneficial effects of the present invention are: the present invention is raw by controlling the chemical composition content of steel plate and optimizing continuous annealing
Production. art promotes to be precipitated a large amount of precipitated phases in steel plate as hydrogen storage trap, realizes the excellent fish scaling resistance of cold rolling glassed steel, close
Performance and processability, manufacturing process using continuous annealing method carry out, simple process, cost is relatively low.
Specific embodiment
Below by embodiment, the present invention is further illustrated.
The embodiment of the present invention carries out molten iron pretreatment-converter smelting-refining-company according to the component proportion of technical solution
Casting-hot rolling-cold rolling-continuous annealing.
Hot rolling: heating temperature: 1100~1250 DEG C, finishing temperature: 850~960 DEG C, coiling temperature: 650~750 DEG C.
Continuous annealing: annealing temperature: 700~900 DEG C, soaking time: 60~240s, slow cooling temperature: 650~720 DEG C, fastly
Cold temperature: 350~430 DEG C, overaging section temperature: 300~450 DEG C.
The ingredient of steel of the embodiment of the present invention is shown in Table 1.The main technologic parameters of steel of the embodiment of the present invention are shown in Table 2.The present invention is real
The performance indicator for applying a steel is shown in Table 3.
The ingredient (wt%) of 1 steel of the embodiment of the present invention of table
The main technologic parameters of 2 steel of the embodiment of the present invention of table
The performance indicator of 3 steel of the embodiment of the present invention of table
Remarks: the quick-fried TH value=t of squamab/d2, wherein tbFor hydrogen diffusion time, unit: min, d are embodiment steel plate thickness,
Unit: mm.Hydrogen diffusion coefficient D=L2/6tL, wherein L is embodiment steel plate thickness, unit cm, tLLag time is spread for hydrogen,
Unit: s.
Hydrogen penetrating quality survey is carried out to plating nickel on surface treated embodiment template using CS350 double-electrolyzer test device
Examination, and the quick-fried feature TH value of squama and hydrogen diffusion coefficient are calculated, the superiority and inferiority of embodiment template fish scaling resistance is judged with this, research is recognized
Bigger for TH value, fish scaling resistance is better, and value >=6.8 TH, can avoid the generation of scale explosion, hydrogen diffusion coefficient is smaller, sample
Plate fish scaling resistance is better.Embodiment template fish scaling resistance is excellent as seen from the data in Table 3, does not occur scale explosion.
In order to state the present invention, explanation appropriately and is being sufficiently carried out to the present invention by embodiment among the above, it is above
Embodiment is merely to illustrate the present invention, and not limitation of the present invention, those of ordinary skill in related technical field, not
In the case where being detached from the spirit and scope of the present invention, it can also make a variety of changes and modification, made any modification are equally replaced
It changes, improve, should all be included in the protection scope of the present invention, scope of patent protection of the invention should be limited by claim
It is fixed.
Claims (2)
1. a kind of cold rolling glassed steel, which is characterized in that the ingredient of the steel plate is as follows by weight percentage: C:0.002%~
0.006%, Si:0.010%~0.030%, Mn:0.10%~0.30%, P :≤0.015%, S:0.010%~0.030%,
Al:0.010%~0.050%, N:0.0015%~0.0050%, Ti:0.060%~0.10%, further include Mo:0.10%~
0.50%, the one or more of Ca:0.001%~0.003%, Mg:0.001%~0.003%, surplus is for Fe and unavoidably
Impurity.
2. a kind of a kind of manufacturing method of cold rolling glassed steel described in claim 1, including molten iron pretreatment-converter smelting-
Refining-continuous casting and hot rolling-cold rolling-continuous annealing, it is characterised in that:
Hot rolling: heating temperature: 1100~1250 DEG C, finishing temperature: 850~960 DEG C, coiling temperature: 650~750 DEG C.
Continuous annealing: annealing temperature: 700~900 DEG C, soaking time: 60~240s, slow cooling temperature: 650~720 DEG C, rapid cooling temperature
Degree: 350~430 DEG C, overaging section temperature: 300~450 DEG C.
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Cited By (4)
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|---|---|---|---|---|
| CN109897946A (en) * | 2019-04-02 | 2019-06-18 | 鞍钢股份有限公司 | A kind of the cold rolling enamelled pressed steel and its manufacturing method of no pin-hole defect |
| CN111961969A (en) * | 2020-08-03 | 2020-11-20 | 鞍钢股份有限公司 | Low-cost cold-rolled enameled steel plate and manufacturing method thereof |
| CN115354235A (en) * | 2022-09-30 | 2022-11-18 | 武汉钢铁有限公司 | High-surface high-precision high-strength enamel steel and production method thereof |
| CN116200670A (en) * | 2023-02-28 | 2023-06-02 | 鞍钢股份有限公司 | Cold-rolled enamelled steel sheet with excellent adhesion performance and manufacturing method thereof |
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| CN109897946A (en) * | 2019-04-02 | 2019-06-18 | 鞍钢股份有限公司 | A kind of the cold rolling enamelled pressed steel and its manufacturing method of no pin-hole defect |
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| CN115354235A (en) * | 2022-09-30 | 2022-11-18 | 武汉钢铁有限公司 | High-surface high-precision high-strength enamel steel and production method thereof |
| CN115354235B (en) * | 2022-09-30 | 2023-01-24 | 武汉钢铁有限公司 | High-surface high-precision high-strength enamel steel and production method thereof |
| CN116200670A (en) * | 2023-02-28 | 2023-06-02 | 鞍钢股份有限公司 | Cold-rolled enamelled steel sheet with excellent adhesion performance and manufacturing method thereof |
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