CN110373608A - A kind of enamelled pressed steel and its production method - Google Patents
A kind of enamelled pressed steel and its production method Download PDFInfo
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- CN110373608A CN110373608A CN201910695021.2A CN201910695021A CN110373608A CN 110373608 A CN110373608 A CN 110373608A CN 201910695021 A CN201910695021 A CN 201910695021A CN 110373608 A CN110373608 A CN 110373608A
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- 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
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- 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
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- 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
- C21D8/0273—Final recrystallisation annealing
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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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- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Sheet Steel (AREA)
Abstract
The invention discloses a kind of enamelled pressed steel, the component comprising following weight percent: C≤0.05, Si≤0.03, Mn≤0.40, P≤0.020, S≤0.015, Alt >=0.020.The invention also discloses the production methods of enamelled pressed steel.Enamelled pressed steel and its production method of the invention, by parameter in optimal control component content and rolling mill practice, the production cost of obtained enamelled pressed steel is low, it is not necessary that precious metal element is added；Defect there is no expansion upheaval, in terms of the quality such as cold quick-fried, fishscale, squama be quick-fried, numb bubble and abscess, wide market are conducive to the needs for meeting social development, and the production method of enamelled pressed steel of the invention, preparation method is simple, is suitble to industrialized production.
Description
Technical field
The present invention relates to metallurgical plate technical field more particularly to a kind of enamelled pressed steel and its production methods.
Background technique
Enamelled pressed steel is to be applied by high-quality steel and Special function inorganic non-metallic materials through novel electrostatic dry powder enameling process
It wards off and the composite material of high temperature firing.Obtained enamel product because its corrosion resistance, it is easy to clean, beautiful the advantages that be widely used
In fields such as household electrical appliances, subway decorations.
Enamel steel directly affect the performance of enamelled pressed steel.Pearlite present in steel interior tissue can be in enamel firing temperature
When spending higher, free carbon is decomposited, the performance quality of enamelled pressed steel is influenced, expansion upheaval after enamel firing occur, enamel surfaces occur
Cold quick-fried, fishscale, squama be quick-fried, numb bubble and the defects of abscess.Therefore, enamelled pressed steel disclosed in the prior art generally uses ultra-low-carbon steel
Steel processed.1320171 A patent application of CN discloses a kind of with excellent formability, blister resistance, anti-stain
The continuous casting enamel sheet and its manufacturing method of property and vitreous enamel adhesiveness, the steel being related to be a kind of ultra-low-carbon steel C≤
0.002%, and precious metal element, Cu:0.02~0.04%, Nb:0.03~0.05% and V:0.03~0.07% are added, therefore
Production cost is significantly increased.105132806 A patent application of CN discloses a kind of low-carbon enamelled pressed steel and its manufacturer
Method, each component content in the steel being related to are as follows: C 0.003~0.006%, Ti 0.04~0.15%, Nb:0.005~
0.04%, same ultra-low-carbon steel and addition precious metal element, production cost are significantly increased.CN 101684535A patent
Application discloses a kind of direct used by enamel once cold-rolled steel sheet and its manufacturing method, each component content in the steel being related to are as follows: and C≤
0.003%, Cu 0.02~0.05%, V 0.01~0.1%, B 0.001~0.008%, same ultra-low-carbon steel and addition
Precious metal element, production cost are significantly increased.
The prior art disclosed above is all made of Ultra-low carbon composition design, and the alloy member of variety classes and quantity is added
Element, to improve the synthesis service performance of glassed steel, including punching performance and fish scaling resistance.Shortcoming is ultralow carbon component
Control causes production technology complicated, and energy consumption is high, increases the glassed steel process costs of production；Precious metal element need to be added, make
Cost of material increases, and leads to high production cost, is unfavorable for reducing production cost optimization；Even if using ultralow carbon component, existing skill
The enamelled pressed steel of art still have quick-fried expansion upheaval, cold quick-fried, fishscale, squama, numb bubble and the quality such as abscess in terms of defect therefore,
Exist to the production method of Optimal Development New enamel steel plate, raising enamelled pressed steel quality and optimization enamelled pressed steel and compels to be essential
It asks.
Therefore, those skilled in the art is dedicated to developing a kind of enamelled pressed steel and its production method.
Summary of the invention
In view of the drawbacks described above of the prior art, it is raw that the technical problem to be solved by the present invention is to enamelled pressed steels in the prior art
Production. art is complicated, and energy consumption is high, precious metal element need to be added, at high cost, there are expansion upheaval, cold quick-fried, fishscale, squama are quick-fried, numb
Defect problem in terms of the quality such as bubble and abscess.
To achieve the above object, the present invention provides a kind of enamelled pressed steels, and it includes the components of following weight percent: C
≤ 0.05, Si≤0.03, Mn≤0.40, P≤0.020, S≤0.015, Alt >=0.020.
Further, the enamelled pressed steel, it includes the components of following weight percent: C≤0.05, Si≤0.02, Mn
≤ 0.20, P≤0.015, S≤0.009,0.025≤Alt≤0.035,0.022≤Als≤0.032,0.0015≤Ca≤
0.0027,0.0030≤O≤0.0060,0.0020≤N≤0.0060；Alt and Als content difference are less than 0.003%；
Further, the enamelled pressed steel, it includes the components of following weight percent: 0.01≤C≤0.05, Si≤
0.02,0.15≤Mn≤0.20,0.008≤P≤0.015,0.003≤S≤0.009,0.029≤Alt≤0.035,0.026≤
Als≤0.032,0.0008≤Ca≤0.0027,0.0035≤O≤0.0060,0.0038≤N≤0.0060；Alt contains with Als
Difference is measured less than 0.003%；
In better embodiment of the invention, the enamelled pressed steel includes that the weight percent of C is 0.04%；
In another better embodiment of the invention, the enamelled pressed steel includes that the weight percent of C is 0.03%；
In better embodiment of the invention, the enamelled pressed steel includes that the weight percent of Si is 0.02%；
In better embodiment of the invention, the enamelled pressed steel includes that the weight percent of Mn is 0.15%；
In another better embodiment of the invention, the enamelled pressed steel includes that the weight percent of Mn is 0.16%；
In another better embodiment of the invention, the enamelled pressed steel includes that the weight percent of Mn is 0.17%；
In better embodiment of the invention, the enamelled pressed steel includes that the weight percent of P is 0.008%；
In another better embodiment of the invention, the enamelled pressed steel includes that the weight percent of P is 0.01%；
In another better embodiment of the invention, the enamelled pressed steel includes that the weight percent of P is 0.013%；
In better embodiment of the invention, the enamelled pressed steel includes that the weight percent of S is 0.003%；
In another better embodiment of the invention, the enamelled pressed steel includes that the weight percent of S is 0.006%；
In another better embodiment of the invention, the enamelled pressed steel includes that the weight percent of S is 0.007%；
In another better embodiment of the invention, the enamelled pressed steel includes that the weight percent of Alt is
0.029%；
In another better embodiment of the invention, the enamelled pressed steel includes that the weight percent of Alt is
0.031%；
In another better embodiment of the invention, the enamelled pressed steel includes that the weight percent of Alt is
0.033%；
In better embodiment of the invention, the enamelled pressed steel includes that the weight percent of Als is 0.026%；
In another better embodiment of the invention, the enamelled pressed steel includes that the weight percent of Als is
0.028%；
In another better embodiment of the invention, the enamelled pressed steel includes that the weight percent of Als is
0.032%；
In better embodiment of the invention, the enamelled pressed steel includes that the weight percent of Ca is 0.0008%；
In another better embodiment of the invention, the enamelled pressed steel includes that the weight percent of Ca is
0.0013%；
In better embodiment of the invention, the enamelled pressed steel includes that the weight percent of O is 0.0037%；
In another better embodiment of the invention, the enamelled pressed steel includes that the weight percent of O is 0.0042%；
In another better embodiment of the invention, the enamelled pressed steel includes that the weight percent of O is 0.0045%；
In better embodiment of the invention, the enamelled pressed steel includes that the weight percent of N is 0.0038%；
In another better embodiment of the invention, the enamelled pressed steel includes that the weight percent of N is 0.0042%；
In another better embodiment of the invention, the enamelled pressed steel includes that the weight percent of N is 0.0050%；
Another aspect of the present invention provides a kind of production method of enamelled pressed steel, comprising the following steps:
Step 1, using composition proportion raw material described in first aspect present invention, molten iron through desulfurization pretreatment carries out converter smelting
Refining makes molten steel decarburization, then carries out LF refining；
The molten steel of step 1 is obtained coils of hot-rolled steel by continuous casting and rolling process by step 2,1130 DEG C of hot rolling start rolling temperature >,
Finishing temperature is 880 DEG C~900 DEG C, and coiling temperature is 570 DEG C~600 DEG C；
Coils of hot-rolled steel after hot rolling is carried out cold rolling through pickling removal iron scale by step 3, obtains cold-rolled steel coils；
Step 4, cold-rolled steel coils are carried out bell-type annealing and it is smooth obtain Steel for enamel, 660 DEG C~690 DEG C of annealing temperature,
Annealing time 8h~12h, slow cooling time 2h~3h, smooth elongation percentage are 0.8%~1.2%；
The Steel for enamel progress application of slip and sintering that step 4 obtains are obtained the enamelled pressed steel by step 5:
Further, the production method of the enamelled pressed steel, in the step 2, the hot rolling of the coils of hot-rolled steel with a thickness of
4.5mm；
Further, the production method of the enamelled pressed steel, in the step 3, the reduction ratio of the cold rolling is 60%~
80%；
Further, the production method of the enamelled pressed steel, in the step 3, the cold rolling coil of the cold rolling with a thickness of
1.8mm；
In better embodiment of the invention, the production method of the enamelled pressed steel, in the step 2, the hot rolling
Start rolling temperature is 1135 DEG C；
In another better embodiment of the invention, the production method of the enamelled pressed steel is described in the step 2
Hot rolling start rolling temperature is 1145 DEG C；
In another better embodiment of the invention, the production method of the enamelled pressed steel is described in the step 2
Hot rolling start rolling temperature is 1155 DEG C；
In better embodiment of the invention, the production method of the enamelled pressed steel, in the step 2, the finish to gauge
Temperature is 880 DEG C；
In another better embodiment of the invention, the production method of the enamelled pressed steel is described in the step 2
Finishing temperature is 900 DEG C；
In better embodiment of the invention, the production method of the enamelled pressed steel is described to batch in the step 2
Temperature is 570 DEG C；
In another better embodiment of the invention, the production method of the enamelled pressed steel is described in the step 2
Coiling temperature is 600 DEG C；
In better embodiment of the invention, the production method of the enamelled pressed steel, in the step 3, the cold rolling
Reduction ratio be 60%；
In another better embodiment of the invention, the production method of the enamelled pressed steel is described in the step 3
The reduction ratio of cold rolling is 70%；
In another better embodiment of the invention, the production method of the enamelled pressed steel is described in the step 3
The reduction ratio of cold rolling is 80%；
In better embodiment of the invention, the production method of the enamelled pressed steel, in the step 4, the annealing
660 DEG C of temperature；
In another better embodiment of the invention, the production method of the enamelled pressed steel is described in the step 4
690 DEG C of annealing temperature；
In better embodiment of the invention, the production method of the enamelled pressed steel, in the step 4, the annealing
Time 8h；
In another better embodiment of the invention, the production method of the enamelled pressed steel is described in the step 4
Annealing time 10h；
In another better embodiment of the invention, the production method of the enamelled pressed steel is described in the step 4
Annealing time 12h；
In better embodiment of the invention, the production method of the enamelled pressed steel, in the step 4, the slow cooling
Time 2h；
In another better embodiment of the invention, the production method of the enamelled pressed steel, in the step 4, described
Slow cooling time 2.5h；
In another better embodiment of the invention, the production method of the enamelled pressed steel is described in the step 4
Slow cooling time 3h；
In better embodiment of the invention, the production method of the enamelled pressed steel is described smooth in the step 4
Elongation percentage is 0.8%；
In another better embodiment of the invention, the production method of the enamelled pressed steel is smooth in the step 4
Elongation percentage is 1.0%；
In another better embodiment of the invention, the production method of the enamelled pressed steel is smooth in the step 4
Elongation percentage is 1.2%；
Using above scheme, enamelled pressed steel disclosed by the invention and its production method are had following technical effect that
(1) enamelled pressed steel of the invention, compared with the carbon content of enamelled pressed steel in the prior art is 0.002~0.006%,
The carbon content of the application enamelled pressed steel is 0.02~0.04%, by each component content in optimization enamelled pressed steel, is guaranteeing enamel
While plate quality, the control of enamelled pressed steel phosphorus content is made to improve a grade, the carbon for excessively reducing enamelled pressed steel is avoided to contain
It measures and takes production technology caused by production technology complicated, the high defect of energy consumption；Meanwhile avoid be added precious metal element nb and
Ti reduces production cost；
(2) production method of enamelled pressed steel of the invention optimizes the smelting process of production method, and aluminium content is controlled one
Determine in range, effectively control oxide content in steel plate, the microcavities trap for avoiding oxide from being formed stores H during enamel
Atom effectively reaches the appearance for the defect enamelled pressed steel for preventing squama quick-fried, improves product quality；Sulfur content in steel is controlled, is effectively kept away
Exempt from hot-short phenomenon；Optimize calcium content, is conducive to that steel inclusion is promoted to become spherical impurities floating, control field trash contains
Amount, is conducive to the mouldability of steel plate；
(3) enamelled pressed steel production method of the invention, by optimizing production method condition, hot-rolled process adds inside steel billet
Heat arrives austenitizing, using higher finishing temperature and lower coiling temperature, the austenite of steel in rolling and coiling process
Structural transformation completes ferritic recrystallization and grows up with crystal grain at ferrite；The total reduction of cold rolling process 60%~
Between 80%, higher reduction ratio provides enough distortion energy for subsequent anneal process, be conducive to annealing process recrystallization and
Texture evolution is conducive to the processability of finished steel plate；For annealing operation by the way of bell-type annealing, annealing temperature is 660 DEG C
~690 DEG C, annealing time is controlled makes the ferritic structure in steel complete recrystallization, crystalline substance in 8h~12h, slow cooling time 2h~3h
Grain length is big and the abundant development of texture；Smooth process elongation percentage is set as between 0.8%~1.2%, is conducive to after eliminating annealing
Yield point elongation, avoid the occurrence of surrender line mass defect；With excellent fish scaling resistance, enamel property, adhesion property and
Processability can be used for single or double enamel technology；
(4) the enamelled pressed steel product that the present invention obtains can be used for the fields such as household electrical appliances, light industry, bathroom, building decoration, not add
Alloy or precious metal element, production cost is low, is conducive to promote and apply；
In conclusion enamelled pressed steel and its production method of the invention, pass through optimal control component content and production work
The parameters such as heating temperature, rolling temperature in skill, obtained enamelled pressed steel production cost, it is not necessary that precious metal element is added；It does not deposit
Defect in expansion upheaval, in terms of the quality such as cold quick-fried, fishscale, squama be quick-fried, numb bubble and abscess, wide market are conducive to full
The needs of sufficient social development, the production method of enamelled pressed steel of the invention, preparation method is simple, is suitble to industrialized production.
Make below with reference to technical effect of the specific embodiment to design of the invention, specific structure and generation further
Illustrate, to fully understand the purposes, features and effects of the present invention.
Specific embodiment
The preferred embodiment of the present invention introduced below keeps its technology contents more clear and is easy to understand.The present invention can be with
It is emerged from by many various forms of embodiments, protection scope of the present invention is not limited only to the implementation mentioned in text
Example.
The preparation of embodiment 1, enamelled pressed steel
The preparation of the present embodiment enamelled pressed steel uses following steps:
Molten iron through desulfurization pretreatment, which carries out converter smelting, makes molten steel decarburization, then carries out LF refining, and molten steel passes through continuous casting
Tandem rolling process obtains coils of hot-rolled steel, and 1135 DEG C of hot rolling start rolling temperature, finishing temperature is 880 DEG C, and coiling temperature is 570 DEG C, hot rolling
Thickness 4.5mm；Coils of hot-rolled steel after hot rolling is subjected to cold rolling, reduction ratio 60%, cold rolling coil through pickling removal iron scale
With a thickness of 1.8mm, cold-rolled steel coils are obtained；Cold-rolled steel coils are subjected to bell-type annealing, 690 DEG C of annealing temperature, annealing time 8h, slow cooling
Time 2h；Last flattened process, smooth elongation percentage obtain Steel for enamel for 1.0%；
Steel for enamel obtained above is subjected to the application of slip after ungrease treatment and sintering obtains the enamelled pressed steel.
Embodiment 2
The preparation of the present embodiment enamelled pressed steel uses following steps:
Molten iron through desulfurization pretreatment, which carries out converter smelting, makes molten steel decarburization, then carries out LF refining；Molten steel passes through continuous casting
Tandem rolling process obtains coils of hot-rolled steel, and 1145 DEG C of hot rolling start rolling temperature, finishing temperature is 880 DEG C, and coiling temperature is 570 DEG C, hot rolling
Thickness 4.5mm；Coils of hot-rolled steel after hot rolling is subjected to cold rolling, reduction ratio 70%, cold rolling coil through pickling removal iron scale
With a thickness of 1.8mm, cold-rolled steel coils are obtained；Cold-rolled steel coils are subjected to bell-type annealing, 690 DEG C of annealing temperature, annealing time 10h, are delayed
Cool time 2.5h；Last flattened process, smooth elongation percentage obtain Steel for enamel for 0.8%；
Steel for enamel obtained above is subjected to the application of slip after ungrease treatment and sintering obtains the enamelled pressed steel.
Embodiment 3
The preparation of the present embodiment enamelled pressed steel uses following steps:
Molten iron through desulfurization pretreatment, which carries out converter smelting, makes molten steel decarburization, then carries out LF refining；Molten steel passes through continuous casting
Tandem rolling process obtains coils of hot-rolled steel, and 1155 DEG C of hot rolling start rolling temperature, finishing temperature is 900 DEG C, and coiling temperature is 600 DEG C, hot rolling
Thickness 4.5mm；Coils of hot-rolled steel after hot rolling is subjected to cold rolling, reduction ratio 80%, cold rolling coil through pickling removal iron scale
With a thickness of 1.8mm, cold-rolled steel coils are obtained；Cold-rolled steel coils are subjected to bell-type annealing, 660 DEG C of annealing temperature, annealing time 12h, are delayed
Cool time 3h；Last flattened process, smooth elongation percentage obtain Steel for enamel for 1.2%；
Steel for enamel obtained above is subjected to the application of slip after ungrease treatment and sintering obtains the enamelled pressed steel.
The enamelled pressed steel constituent content that detection Examples 1 to 3 obtains, the results are shown in Table 1.
1 unit of table: %
| Embodiment | C | Si | Mn | P | S | Alt | Als | Ca | O | N |
| 1 | 0.04 | 0.02 | 0.16 | 0.010 | 0.006 | 0.029 | 0.026 | 0.0013 | 0.0037 | 0.0042 |
| 2 | 0.03 | 0.02 | 0.15 | 0.008 | 0.007 | 0.031 | 0.028 | 0.0013 | 0.0045 | 0.0038 |
| 3 | 0.03 | 0.02 | 0.17 | 0.013 | 0.003 | 0.033 | 0.032 | 0.0008 | 0.0042 | 0.0050 |
From the data in table 1, it can be seen that in the enamelled pressed steel that the present embodiment 1~3 obtains carbon content between 0.02~0.04%,
Without precious metal element nb and Ti；
Mechanical properties test is carried out before carrying out the application of slip and sintering to the Steel for enamel that the embodiment of the present invention 1~3 obtains,
Inspection result is shown in Table 2.
Table 2
| Embodiment | Yield strength (MPa) | Tensile strength (MPa) | Elongation (A50, %) |
| 1 | 178 | 304 | 45.0 |
| 2 | 197 | 302 | 51.0 |
| 3 | 200 | 304 | 44.0 |
From the data in table 2, it can be seen that the Steel for enamel obtained using the production of the method for the present invention, product elongation percentage 44~45 it
Between, elongation percentage is high, meets the requirement for manufacturing the processing such as bending, flange, punching press；All do not occur the quick-fried phenomenon of squama after enamel, steel plate and
Adherence between enamel is excellent.
The squama for placing 48 hours observation product surfaces in air to the enamelled pressed steel that the embodiment of the present invention 1~3 obtains is quick-fried
Property, and adhesion property is tested, inspection result is shown in Table 3.
Table 3
| Embodiment | The quick-fried property of squama | Adherence |
| 1 | Nothing | A1 |
| 2 | Nothing | A1 |
| 3 | Nothing | A2 |
From the data in table 3, it can be seen that the enamelled pressed steel obtained using the production of the method for the present invention, places 48 hours not in air
The quick-fried phenomenon of squama occurs, the adherence between steel plate and enamel is excellent.
Other technologies scheme of the present invention also has similar beneficial effect.
The preferred embodiment of the present invention has been described in detail above.It should be appreciated that the ordinary skill of this field is without wound
The property made labour, which according to the present invention can conceive, makes many modifications and variations.Therefore, all technician in the art
Pass through the available technology of logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Scheme, all should be within the scope of protection determined by the claims.
Claims (8)
1. a kind of enamelled pressed steel, which is characterized in that the component comprising following weight percent:
C≤0.05, Si≤0.03, Mn≤0.40, P≤0.020, S≤0.015, Alt >=0.020.
2. enamelled pressed steel as described in claim 1, which is characterized in that the enamelled pressed steel, it includes following weight percent
Component: C≤0.05, Si≤0.02, Mn≤0.20, P≤0.015, S≤0.009,0.025≤Alt≤0.035,0.022≤Als
≤ 0.032,0.0015≤Ca≤0.0027,0.0030≤O≤0.0060,0.0020≤N≤0.0060；Wherein, Alt and Als
Content difference is less than 0.003%.
3. enamelled pressed steel as claimed in claim 2, which is characterized in that the enamelled pressed steel, it includes following weight percent
Component: 0.01≤C≤0.05, Si≤0.02,0.15≤Mn≤0.20,0.008≤P≤0.015,0.003≤S≤0.009,
0.029≤Alt≤0.035,0.026≤Als≤0.032,0.0008≤Ca≤0.0027,0.0035≤O≤0.0060,
0.0038≤N≤0.0060；Wherein, Alt and Als content difference are less than 0.003%.
4. a kind of production method of enamelled pressed steel, which is characterized in that the specific steps of the production method include:
Step 1, using composition proportion raw material described in first aspect present invention, molten iron through desulfurization pretreatment, which carries out converter smelting, to be made
Then molten steel decarburization carries out LF refining；
The molten steel of step 1 is obtained coils of hot-rolled steel, 1130 DEG C of hot rolling start rolling temperature >, finish to gauge by continuous casting and rolling process by step 2
Temperature is 880 DEG C~900 DEG C, and coiling temperature is 570 DEG C~600 DEG C；
Coils of hot-rolled steel after hot rolling is carried out cold rolling through pickling removal iron scale by step 3, obtains cold-rolled steel coils；
Step 4, cold-rolled steel coils are carried out bell-type annealing and it is smooth obtain Steel for enamel, 660 DEG C~690 DEG C of annealing temperature, annealing
Time 8h~12h, slow cooling time 2h~3h, smooth elongation percentage are 0.8%~1.2%；
The Steel for enamel progress application of slip and sintering that step 4 obtains are obtained the enamelled pressed steel by step 5.
5. method as claimed in claim 4, which is characterized in that in the step 2,
The hot rolling of the coils of hot-rolled steel is with a thickness of 4.5mm.
6. method as claimed in claim 4, which is characterized in that in the step 3,
The reduction ratio of the cold rolling is 60%~80%.
7. method as claimed in claim 4, which is characterized in that in the step 3,
The cold rolling coil of the cold rolling is with a thickness of 1.8mm.
8. the enamelled pressed steel that a kind of any one of claim 4~7 the method produces, which is characterized in that the glassed steel
Plate includes the component of following weight percent: 0.01≤C≤0.05, Si≤0.02,0.15≤Mn≤0.20,0.008≤P≤
0.015,0.003≤S≤0.009,0.029≤Alt≤0.035,0.026≤Als≤0.032,0.0008≤Ca≤0.0027,
0.0035≤O≤0.0060,0.0038≤N≤0.0060；Alt and Als content difference are less than 0.003%.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111826591A (en) * | 2020-06-18 | 2020-10-27 | 包头钢铁（集团）有限责任公司 | Fatigue-resistant enamel steel for water heater liner and preparation process thereof |
| CN112157135A (en) * | 2020-09-07 | 2021-01-01 | 山东钢铁集团日照有限公司 | Production method of economical cold-rolled steel plate for water heater water tank outer plate |
| CN112375971A (en) * | 2020-10-21 | 2021-02-19 | 包头钢铁（集团）有限责任公司 | Low-cost cold-rolled low-carbon enamel steel and manufacturing method thereof |
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| CN108220748A (en) * | 2017-12-27 | 2018-06-29 | 柳州钢铁股份有限公司 | The manufacturing method of household electrical appliances cold rolling low-carbon glassed steel |
| CN108220799A (en) * | 2017-12-27 | 2018-06-29 | 柳州钢铁股份有限公司 | Household electrical appliances cold rolling low-carbon glassed steel |
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| CN108220748A (en) * | 2017-12-27 | 2018-06-29 | 柳州钢铁股份有限公司 | The manufacturing method of household electrical appliances cold rolling low-carbon glassed steel |
| CN108220799A (en) * | 2017-12-27 | 2018-06-29 | 柳州钢铁股份有限公司 | Household electrical appliances cold rolling low-carbon glassed steel |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111826591A (en) * | 2020-06-18 | 2020-10-27 | 包头钢铁（集团）有限责任公司 | Fatigue-resistant enamel steel for water heater liner and preparation process thereof |
| CN112157135A (en) * | 2020-09-07 | 2021-01-01 | 山东钢铁集团日照有限公司 | Production method of economical cold-rolled steel plate for water heater water tank outer plate |
| CN112375971A (en) * | 2020-10-21 | 2021-02-19 | 包头钢铁（集团）有限责任公司 | Low-cost cold-rolled low-carbon enamel steel and manufacturing method thereof |
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