CN109136777A - A kind of secondary cold-rolling tin plate and its production method - Google Patents
A kind of secondary cold-rolling tin plate and its production method Download PDFInfo
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- CN109136777A CN109136777A CN201810878281.9A CN201810878281A CN109136777A CN 109136777 A CN109136777 A CN 109136777A CN 201810878281 A CN201810878281 A CN 201810878281A CN 109136777 A CN109136777 A CN 109136777A
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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
- 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
- C21D8/0205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips of ferrous alloys
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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
- C21D8/0268—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment between cold rolling steps
-
- 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
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- 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
-
- 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
- C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Sheet Steel (AREA)
Abstract
The invention discloses a kind of secondary cold-rolling tin plate and its production methods, belong to steel preparation technical field.The chemical component mass percent of the secondary cold-rolling tin plate is calculated as: C:0.002-0.004%, Si≤0.03%, Mn:0.40-0.60%, P≤0.015%, S≤0.012%, Als:0.02-0.05%, Ti:0.05-0.07%, B:0.0003-0.0010%, N≤0.0030%, remaining is Fe and impurity.Secondary cold-rolling tin plate of the present invention and its production method can produce low energy consumption, and performance is uniform, and ageing resistance can be good, and anisotropy is small, the tin plate having excellent moldability.
Description
Technical field
The present invention relates to steel preparation technical field, in particular to a kind of secondary cold-rolling tin plate and its production method.
Background technique
Secondary cold-rolling tin plate is to pass through the operation of continuous electroplating tin again after the uncoated tinplate base after annealing carries out secondary cold-rolling
The tin plate or steel band in two sides plating tin layers obtained.It has intensity high, and the thin feature of thickness is widely used in eating
Product, the field of product packaging such as beverage, chemical industry.
A large amount of research has currently been carried out to secondary cold-rolling tin plate and secondary cold-rolling tinning original plate both at home and abroad, has been achieved
Some achievements.But secondary cold-rolling tin plate in the prior art and secondary cold-rolling tinning original plate have that timeliness is big,
Simultaneously when preparing secondary cold-rolling tin plate and secondary cold-rolling tinning original plate, heating temperature is high, and energy consumption is high, and edge easily occurs
Mixed crystal defect causes performance difference in side big.
Summary of the invention
The present invention provides a kind of secondary cold-rolling tin plate and its production method, solves or part solves in the prior art
Secondary cold-rolling tin plate and secondary cold-rolling tinning original plate have that timeliness is big, and energy consumption is high, easily there is mixed crystal defect in edge, leads
Cause the technical problem that performance difference is big in side.
In order to solve the above technical problems, the present invention provides a kind of secondary cold-rolling tin plate, the secondary cold-rolling tin plate
Chemical component mass percent be calculated as: C:0.002-0.004%, Si≤0.03%, Mn:0.40-0.60%, P≤
0.015%, S≤0.012%, Als:0.02-0.05%, Ti:0.05-0.07%, B:0.0003-0.0010%, N≤
0.0030%, remaining is Fe and impurity.
Based on identical inventive concept, the production method the present invention also provides a kind of secondary cold-rolling tin plate includes following step
It is rapid: to carry out molten iron pretreatment, converter smelting refines, and obtains slab, the chemical component mass percent meter of the slab after continuous casting
Are as follows: C:0.002-0.004%, Si≤0.03%, Mn:0.40-0.60%, P≤0.015%, S≤0.012%, Als:0.02-
0.05%, Ti:0.05-0.07%, B:0.0003-0.0010%, N≤0.0030%, remaining is Fe and impurity；To the slab
Hot rolling is carried out, the heating temperature of the slab in the hot rolling is 1050-1150 DEG C, the end of the slab in the hot rolling
Rolling temperature is 780-820 DEG C, and the coiling temperature of the slab in the hot rolling is 690-730 DEG C；To the slab after hot rolling into
Row pickling, cold rolling, continuous annealing, secondary cold-rolling obtain steel plate；Product volume is obtained to the tin plating of the steel plate.
Further, the hot rolling of the slab is divided into roughing and finish rolling；The roughing uses 1+5 or 3+3 passage；Institute
Finish rolling is stated using ferrite rolling；Entry temperature at finishing≤870 DEG C.
Further, the annealing temperature of the continuous annealing of the slab is 710-730 DEG C.
Further, the reduction ratio of the secondary cold-rolling of the slab is 20-40%.
Explanation in relation to ingredient and technique:
C is added as intensified element, and C element forms precipitate in conjunction with Ti element, improves intensity, secondary to guarantee
The intensity and hardness of cold-rolled tin plate, while to guarantee to have both good plasticity, C element is limited to 0.002-0.004%, mistake
Barring will easily occur in height, too low so that intensity is insufficient.
Si is deoxidant element, the solution strengthening in steel, is controlled below 0.03%.
Mn is added as intensified element, and Mn element is displacement solution strengthening element, and Mn element is limited to 0.40-
0.60%, it is excessively high to lead to increased costs, it is too low so that intensity is insufficient.
P is easy that steel is made to become fragile, and influences toughness, controls below 0.015%.
S influences the low-temperature flexibility of steel, controls below 0.012%.
Al deoxidation must element, be N element fixed element, will form AlN precipitate, between fixing in steel
Gap atom, improves intensity, and Als is controlled in 0.02-0.05%.
Ti forms the precipitate of Ti (C, N), for fixing the interstitial atom in steel, suitable Ti can subtract easily in conjunction with C, N
The C of few free state, N atom, to reduce intensity.It is added very little, does not have the effect of solid C, N, excessive increase cost is added.
So control is in 0.05%-0.07%.
The micro addition of B is easy in crystal boundary segregation, to strengthen crystal boundary, for fixing the interstitial atom in steel, to make up
Grain-boundary weakness and plasticity in the case of low C, N solid solution reduce, and effectively prevent secondary processing brittleness, prevent cracking.B was added
It is more, steel plate can be caused brittle.So the B of addition 0.0003%-0.001% is to improve plasticity.
The N of N solid solution can improve intensity, control below 0.003%.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
Molten iron pretreatment is carried out, converter smelting refines, and obtains slab, the chemical component mass percent of slab after continuous casting
It is calculated as: C:0.002-0.004%, Si≤0.03%, Mn:0.40-0.60%, P≤0.015%, S≤0.012%, Als:
0.02-0.05%, Ti:0.05-0.07%, B:0.0003-0.0010%, N≤0.0030%, remaining is Fe and impurity, is used
Ultralow carbon component, by appropriate C, Mn element of addition in steel to guarantee hardness and strength, addition Ti, Al, B element are with fixation
C, N element are in steel to improve formability and ageing resistance, while B element can also be effectively improved secondary processing brittleness, prevent from processing
Cracking improves formability.
Hot rolling is carried out to slab, the heating temperature of slab in the hot rolling is 1050-1150 DEG C, and slab is in course of hot rolling
In finishing temperature be 780-820 DEG C, the coiling temperature of slab in the hot rolling be 690-730 DEG C, can be to avoid conventional Austria
Family name's body roll when steel edge portion because temperature drop greatly caused by edge mixed crystal problem improve performance uniformity, improve anisotropy, meanwhile,
Energy consumption can be reduced, steel plate is obtained to the slab progress pickling after hot rolling, cold rolling, continuous annealing, secondary cold-rolling, tin plating of the steel plate is obtained
Product volume, finally can get by continuous annealing and the cooperation of secondary cold-rolling has low energy consumption, and performance is uniform, and ageing resistance can be good,
Anisotropy is small, the tin plating panel products for the DR-7M-DR-8M having excellent moldability.
Detailed description of the invention
Fig. 1 is the flow chart of the production method of secondary cold-rolling tin plate provided in an embodiment of the present invention.
Specific embodiment
Referring to Fig. 1, a kind of secondary cold-rolling tin plate provided in an embodiment of the present invention, the chemistry of the secondary cold-rolling tin plate
Ingredient percent is calculated as:
C:0.002-0.004%, Si≤0.03%, Mn:0.40-0.60%, P≤0.015%, S≤0.012%, Als:
0.02-0.05%, Ti:0.05-0.07%, B:0.0003-0.0010%, N≤0.0030%, remaining is Fe and impurity.
Using ultralow carbon component, by appropriate C, Mn element of addition in steel to guarantee hardness and strength, addition Ti,
Al, B element improve formability and ageing resistance to fix C in steel, N element, while B element can also be effectively improved secondary operation
Brittleness prevents processing from cracking, and improves formability.
Based on identical inventive concept, the production method the present invention also provides a kind of secondary cold-rolling tin plate includes following step
It is rapid:
Step 1, molten iron pretreatment is carried out, converter smelting refines, and obtains slab, the chemical component of the slab after continuous casting
Mass percent is calculated as: C:0.002-0.004%, Si≤0.03%, Mn:0.40-0.60%, P≤0.015%, and S≤
0.012%, Als:0.02-0.05%, Ti:0.05-0.07%, B:0.0003-0.0010%, N≤0.0030%, remaining is Fe
And impurity.
Step 2, hot rolling being carried out to the slab, the heating temperature of the slab in the hot rolling is 1050-1150 DEG C,
The finishing temperature of the slab in the hot rolling is 780-820 DEG C, and the coiling temperature of the slab in the hot rolling is
690-730℃。
Step 3, steel plate is obtained to the slab progress pickling after hot rolling, cold rolling, continuous annealing, secondary cold-rolling.
Step 4, product volume is obtained to the tin plating of the steel plate.
Step 2 is discussed in detail.
The heating temperature of slab in the hot rolling is 1050-1150 DEG C, and the finishing temperature of slab in the hot rolling is
780-820 DEG C, entry temperature at finishing≤870 DEG C, the coiling temperature of slab in the hot rolling is 690-730 DEG C, mainly
Purpose be when avoiding conventional ausrolling steel edge portion because temperature drop greatly caused by edge mixed crystal problem improve performance uniformity, together
Shi Gaishan anisotropy.
The hot rolling of slab is divided into roughing and finish rolling.
Roughing uses 1+5 or 3+3 passage.
Finish rolling uses ferrite rolling, since finish rolling is carried out in ferrite area, can have when producing thin slab product
Effect avoids edge from entering two-phase section and avoids mixed crystal problem, and can also improve finished product anisotropy by ferrite rolling.
Step 3 is discussed in detail.
The annealing temperature of the continuous annealing of slab is 710-730 DEG C, is the formation and life for promoting { 111 } texture during continuous annealing
It is long, annealing temperature is limited as 710-730 DEG C, and to guarantee to have suitable texture and crystallite dimension in steel, annealing temperature is too low to be led
Cause tissue recrystallization not exclusively, annealing temperature is excessively high to lead to grain coarsening.
The reduction ratio of the secondary cold-rolling of slab is 20-40%, be can reach using the secondary cold-rolling reduction ratio of 20-40%
The rank of DR-7M-DR-8M, the too low hardness strength that will lead to of secondary cold-rolling reduction ratio is low, and secondary cold-rolling reduction ratio is excessively high to be will lead to
Anisotropy increases.
Finally can get by the cooperation of continuous annealing process and secondary cold-rolling technique has low energy consumption, and performance is uniform, resistance to timeliness
Functional, anisotropy is small, the tin plating panel products for the DR-7M~DR-8M having excellent moldability.
In order to become apparent from the embodiment of the present invention, introduced from the application method of the embodiment of the present invention below.
Method one
Forming chemical component mass percent using conventional continuous cast method is respectively C:0.0025%, Si:0.01%, Mn:
0.45%, P:0.010%, S:0.005%, Als:0.036%, Ti:0.055%, B:0.00004%, N:0.0020%, remaining
For the slab of Fe and impurity.Then, slab is enabled successively to pass through heating, roughing de-scaling, roughing, cutting head by hot tandem
Tail, finish rolling, section cooling, batches carry out hot continuous rolling at finish rolling de-scaling, wherein heating furnace heating temperature is 1120 DEG C, and roughing uses
1+5 passage, 862 DEG C of the entry temperature at finishing, mm finishing mill unit finishing temperature are 811 DEG C, and coiling temperature is 721 DEG C.In this way, through
After crossing roughing, finish rolling, section cooling, batched by coiling machine；Then, enable hot rolled coil by coupled pickling and tandem mill, continuous annealing unit
It is i.e. successively cold rolled annealed by uncoiling, cutting head, pickling, trimming, cold continuous rolling, continuous annealing, secondary cold-rolling, tin plating progress with tin plating unit
It is tin plating, wherein continuous annealing annealing temperature is 725 DEG C, secondary cold-rolling rate 20%, finished product thickness 0.17mm.In this way, through overpickling,
Cold rolling, annealing, it is tin plating after, batched by coiling machine, finally obtain chemical component mass percent be respectively C:0.0025%,
Si:0.01%, Mn:0.45%, P:0.010%, S:0.005%, Als:0.036%, Ti:0.055%, B:0.00004%, N:
0.0020%, remaining is the DR-7M hardness level secondary cold-rolling tin plate of Fe and impurity, and hardness HR30Tm is 69, and surrender is strong
Degree is 502MPa.
Method two
Forming chemical component mass percent using conventional continuous cast method is respectively C:0.004%, Si:0.015%, Mn:
0.56%, P:0.012%, S:0.007%, Als:0.045%, Ti:0.066%, B:0.00007%, N:0.0025%, remaining
For the slab of Fe and impurity.Then, slab is enabled successively to pass through heating, roughing de-scaling, roughing, cutting head by hot tandem
Tail, finish rolling, section cooling, batches carry out hot continuous rolling at finish rolling de-scaling, wherein heating furnace heating temperature is 1070 DEG C, and roughing uses
3+3 passage, 841 DEG C of the entry temperature at finishing, mm finishing mill unit finishing temperature are 785 DEG C, and coiling temperature is 691 DEG C.In this way, through
After crossing roughing, finish rolling, section cooling, batched by coiling machine；Then, enable hot rolled coil by coupled pickling and tandem mill, continuous annealing unit
It is i.e. successively cold rolled annealed by uncoiling, cutting head, pickling, trimming, cold continuous rolling, continuous annealing, secondary cold-rolling, tin plating progress with tin plating unit
It is tin plating, wherein continuous annealing annealing temperature is 718 DEG C, secondary cold-rolling rate 30%, finished product thickness 0.18mm.In this way, through overpickling,
Cold rolling, annealing, it is tin plating after, batched by coiling machine, finally obtain chemical component mass percent be respectively C:0.004%, Si:
0.015%, Mn:0.56%, P:0.012%, S:0.007%, Als:0.045%, Ti:0.066%, B:0.00007%, N:
0.0025%, remaining is the DR-8 hardness level secondary cold-rolling tin plate of Fe and impurity, and hardness HR30Tm is 72, yield strength
For 554MPa.
Method three
Forming chemical component mass percent using conventional continuous cast method is respectively C:0.0031%, Si:0.008%, Mn:
0.55%, P0.013%, S:0.005%, Als:0.043%, Ti:0.061%, B:0.00005%, N:0.0031%, remaining
For the slab of Fe and impurity.Then, slab is enabled successively to pass through heating, roughing de-scaling, roughing, cutting head by hot tandem
Tail, finish rolling, section cooling, batches carry out hot continuous rolling at finish rolling de-scaling, wherein heating furnace heating temperature is 1102 DEG C, and roughing uses
3+3 passage, 850 DEG C of the entry temperature at finishing, mm finishing mill unit finishing temperature are 801 DEG C, and coiling temperature is 715 DEG C.In this way, through
After crossing roughing, finish rolling, section cooling, batched by coiling machine；Then, enable hot rolled coil by coupled pickling and tandem mill, continuous annealing unit
It is i.e. successively cold rolled annealed by uncoiling, cutting head, pickling, trimming, cold continuous rolling, continuous annealing, secondary cold-rolling, tin plating progress with tin plating unit
It is tin plating, wherein continuous annealing annealing temperature is 722 DEG C, secondary cold-rolling rate 40%, finished product thickness 0.15mm.In this way, through overpickling,
Cold rolling, annealing, it is tin plating after, batched by coiling machine, finally obtain chemical component mass percent be respectively C:0.0031%,
Si:0.008%, Mn:0.55%, P0.013%, S:0.005%, Als:0.043%, Ti:0.061%, B:0.00005%, N:
0.0031%, remaining is the DR-8M hardness level secondary cold-rolling tin plate of Fe and impurity, and hardness HR30Tm is 73, and surrender is strong
Degree is 588Mpa.
Manganese strengthened using Ultra-low carbon, height, interstitial atom uses Ti, B, the ingredient design cooperation hot rolling that Al element is fixed
Ferrite rolling, using high temperature continuous annealing, the production technology of secondary cold-rolling pressure can produce low energy consumption, and performance is uniform, resistance to timeliness
Functional, anisotropy is small, the tin plate having excellent moldability.
It should be noted last that the above specific embodiment is only used to illustrate the technical scheme of the present invention and not to limit it,
Although being described the invention in detail referring to example, those skilled in the art should understand that, it can be to the present invention
Technical solution be modified or replaced equivalently, without departing from the spirit and scope of the technical solution of the present invention, should all cover
In the scope of the claims of the present invention.
Claims (5)
1. a kind of secondary cold-rolling tin plate, which is characterized in that the chemical component mass percent meter of the secondary cold-rolling tin plate
Are as follows:
C:0.002-0.004%, Si≤0.03%, Mn:0.40-0.60%, P≤0.015%, S≤0.012%, Als:0.02-
0.05%, Ti:0.05-0.07%, B:0.0003-0.0010%, N≤0.0030%, remaining is Fe and impurity.
2. a kind of production method of secondary cold-rolling tin plate, is based on secondary cold-rolling tin plate described in claim 1, feature exists
In, comprising the following steps:
Molten iron pretreatment is carried out, converter smelting refines, and obtains slab, the chemical component mass percent of the slab after continuous casting
It is calculated as: C:0.002-0.004%, Si≤0.03%, Mn:0.40-0.60%, P≤0.015%, S≤0.012%, Als:
0.02-0.05%, Ti:0.05-0.07%, B:0.0003-0.0010%, N≤0.0030%, remaining is Fe and impurity；
Hot rolling is carried out to the slab, the heating temperature of the slab in the hot rolling is 1050-1150 DEG C, and the slab exists
Finishing temperature in course of hot rolling is 780-820 DEG C, and the coiling temperature of the slab in the hot rolling is 690-730 DEG C；
Steel plate is obtained to the slab progress pickling after hot rolling, cold rolling, continuous annealing, secondary cold-rolling；
Product volume is obtained to the tin plating of the steel plate.
3. the production method of secondary cold-rolling tin plate according to claim 2, it is characterised in that:
The hot rolling of the slab is divided into roughing and finish rolling；
The roughing uses 1+5 or 3+3 passage；
The finish rolling uses ferrite rolling；
Entry temperature at finishing≤870 DEG C.
4. the production method of secondary cold-rolling tin plate according to claim 2, it is characterised in that:
The annealing temperature of the continuous annealing of the slab is 710-730 DEG C.
5. the production method of secondary cold-rolling tin plate according to claim 2, it is characterised in that:
The reduction ratio of the secondary cold-rolling of the slab is 20-40%.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111534757A (en) * | 2020-05-11 | 2020-08-14 | 首钢集团有限公司 | Steel for packaging, production method thereof and packaging product |
| CN111893380A (en) * | 2020-07-13 | 2020-11-06 | 首钢集团有限公司 | Cold-rolled tin plate for easy-to-tear cover and preparation method thereof |
| CN114058946A (en) * | 2021-10-14 | 2022-02-18 | 首钢集团有限公司 | Low-anisotropy high-strength high-elongation steel substrate, tin-plated plate and preparation method of tin-plated plate |
| CN115151668A (en) * | 2019-12-20 | 2022-10-04 | Posco公司 | Tin-plated raw plate for processing and method for manufacturing same |
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| CN115151668A (en) * | 2019-12-20 | 2022-10-04 | Posco公司 | Tin-plated raw plate for processing and method for manufacturing same |
| CN115151668B (en) * | 2019-12-20 | 2023-10-20 | Posco公司 | Tin plating original plate for processing and manufacturing method thereof |
| CN111534757A (en) * | 2020-05-11 | 2020-08-14 | 首钢集团有限公司 | Steel for packaging, production method thereof and packaging product |
| CN111893380A (en) * | 2020-07-13 | 2020-11-06 | 首钢集团有限公司 | Cold-rolled tin plate for easy-to-tear cover and preparation method thereof |
| CN111893380B (en) * | 2020-07-13 | 2021-12-21 | 首钢集团有限公司 | Cold-rolled tin plate for easy-to-tear cover and preparation method thereof |
| CN114058946A (en) * | 2021-10-14 | 2022-02-18 | 首钢集团有限公司 | Low-anisotropy high-strength high-elongation steel substrate, tin-plated plate and preparation method of tin-plated plate |
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Application publication date: 20190104 |