CN108300948A - A kind of MR T-5 CA steel grades tinning substrates and its manufacturing method - Google Patents
A kind of MR T-5 CA steel grades tinning substrates and its manufacturing method Download PDFInfo
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- CN108300948A CN108300948A CN201810162342.1A CN201810162342A CN108300948A CN 108300948 A CN108300948 A CN 108300948A CN 201810162342 A CN201810162342 A CN 201810162342A CN 108300948 A CN108300948 A CN 108300948A
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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
- C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
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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
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
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- Heat Treatment Of Sheet Steel (AREA)
Abstract
The present invention provides a kind of MR T 5CA steel grades tinning substrates and its manufacturing method, the chemical composition mass percent of above-mentioned MR T 5CA steel grade tinning substrates includes：C 0.05~0.074%, Si≤0.02%, Mn0.35~0.50%, P≤0.015%, S≤0.010%, Als 0.025~0.065%, N 0.0040~0.0080%, O≤0.0030%, remaining is Fe and impurity.Great surface quality can be obtained through the invention, suitable for the tinning substrate of tank processed at a high speed after tin plating, there is low slab transverse corner crack cracking frequency.
Description
Technical field
The invention belongs to steel technical field more particularly to a kind of MR T-5 CA steel grades tinning substrates and its manufacturing methods.
Background technology
Tin plate is the cold-rolled low carbon steel steel plate or steel band in two sides plating tin layers obtained by continuous electroplating tin operation.
There is corrosion-resistant, nontoxic, high intensity, the good feature of processability to be widely used in food, the product packagings such as beverage, chemical industry for it
Field.
Increasingly fierce with the market competition of food packaging industry, tin plating industry all the more sees the cost advantage of tinning substrate
Weight, in this regard, not reducing intensity and the processing performance of tinning substrate under the premise of being thinned as the scientific research of Tinplate Production manufacturer
And developing direction.Tinning substrate is usually carbon aluminium-killed steel at present, is generally divided into continuous annealing (CA) and bell-type annealing (BA)
Two kinds of production technologies.The usual hardness of coil of strip of bell-type annealing technique productions is soft, and surface quality is poor, therefore for hardness T-3 or more
Tinning substrate mostly use greatly continuous annealing process production.Conventional high-carbon MR T-5 CA are to ensure higher hardness and strength, in steel
It is added to about 0.09~0.13% C content, due to the coagulating property of molten steel itself under the component system, is easily gone out in casting process
Existing slab transverse corner crack line, belongs to crack sensitivity steel grade.Slab angle transverse fissure has stronger heredity, slab ejection rear surface
The iron scale formed through peroxidating makes transverse corner crack line be difficult to find, enters and fails to remove in stokehold flame cleaning or heating furnace
Angle transverse fissure in the follow-up operation of rolling often can not soldering, and then coiled sheet edge formed crack defect.Slab angle transverse fissure
Occur bringing destabilizing factor to production, hinder the normal circulation of strand, also improves follow-up Rolling Production difficulty, not only
The direct motion of metallurgical production tissue is affected, the further improvement of finished surface quality is also unfavorable for.
In addition to this, MR T-5 CA are mainly used in three-piece can body, and three-piece can body mainly uses resistance-welding process
Technology ensures the quality of weld seam by strictly controlling the technological parameters such as welding current, welding pressure, speed of welding, amount of lap.
MR T-5 CA products as beverage can and food cans can body iron, at a high speed tank wire bonding speed processed mostly 600 tanks/point or more, it is high
Stability and weldquality of the speed of welding to welding current more stringent requirements are proposed.It is tracked from product service condition early period
From the point of view of, high-carbon MR T-5 CA products are partly there are welding currents to fluctuate big, welding spark at circle welding sequence for tank line processed at a high speed
The problems such as big, welding current fluctuation often lead to need to grope and debug rational welding current repeatedly in user's production process greatly
Section has seriously affected producing line production efficiency, and welding spark then leads to greatly commissure nonuniform organization, and then flange is caused to rise
Wrinkle or cracking, potential risk is brought to slack tank food safety and sanitation.
Invention content
In view of the above-mentioned drawbacks in the prior art, the main purpose of the present invention is to provide a kind of platings of MR T-5 CA steel grades
Tinbase plate and its manufacturing method can be obtained great surface quality, suitable for the tinning substrate of tank processed at a high speed after tin plating, have low slab angle
Transverse crack cracking frequency.
In order to achieve the above object, the present invention adopts the following technical scheme that：A kind of MR T-5 CA steel grade tinning substrates,
Chemical composition mass percent includes：C 0.05~0.074%, Si≤0.02%, Mn 0.35~0.50%, P≤0.015%,
S≤0.010%, Als 0.025~0.065%, N 0.0040~0.0080%, O≤0.0030%, remaining is Fe and impurity.
As a further preference, the thickness of the MR T-5 CA steel grade tinning substrates is 0.15~0.35mm.
As a further preference, the hardness HR30Tm of the MR T-5 CA steel grade tinning substrates is 60-70.
The manufacturing method of above-mentioned MR T-5 CA steel grade tinning substrates, includes the following steps：
It will smelt after the slab comprising the chemical composition that continuous casting obtains heated, progress roughing and finish rolling, to obtain
Obtain hot rolled plate；The hot rolled plate is subjected to section cooling；The hot rolled plate is batched, hot-rolled finished product, the hot-rolled finished product are obtained
Thickness >=1.8mm；The hot-rolled finished product is subjected to pickling, cold rolling and continuous annealing annealing, obtains cold rolling finished product, the cold rolling finished product
Thickness is 0.15~0.35mm；
Wherein, the heating temperature is 1200~1280 DEG C, and the finishing temperature of the finish rolling is 860~900 DEG C.
As a further preference, the roughing uses 1+5 passages.
As a further preference, the workpiece thickness of the roughing is 38~40mm.
As a further preference, the temperature batched is 550~590 DEG C.
As a further preference, the continuous annealing annealing temperature is 630~660 DEG C.
As a further preference, further include after the continuous annealing annealing：Planarization step, the smooth elongation percentage be 1.6~
2.2%.
The beneficial effects of the invention are as follows：MR T-5 CA steel grade tinning substrates of the present invention, chemical composition mass percent packet
It includes：C 0.05~0.074%, Si≤0.02%, Mn 0.35~0.50%, P≤0.015%, S≤0.010%, Als 0.025
~0.065%, N 0.0040~0.0080%, O≤0.0030%, remaining is Fe and impurity；The present invention is by by the carbon in steel
Element, manganese element and nitrogen element content optimize combination, can be used for producing the MR T-5 CA hard of 0.15~0.35mm of thickness
Tin plate, due to using high manganese strengthened, the composition design of high nitrogen high alumina, meanwhile, nitrogen in steel element is abundant by excessive aluminium element
It is fixed, aluminium nitride is formed, aging resistance energy is remarkably improved.In addition low silicone content can guarantee good surface quality.Due to
Carbon content is in low-carbon range, slab angle transverse fissure can be effectively prevent to occur, while can reduce hot-rolled coil intensity, to reduce
Acid rolls roll-force, realizes the steady production of 0.15mm Ultra-thins.In addition, also reside in can be with for the advantageous effect of low-carbon chemical composition
Welding spark when downstream user tank is reduced, welding process stability is improved, realizes the high speed tank of >=600 tanks/minute.
Specific implementation mode
The present invention overcomes existing plating tinbase by a kind of MR T-5 CA steel grades tinning substrates of offer and its manufacturing method
The mass defect of plate.
In order to solve drawbacks described above, the main thought of the embodiment of the present invention is：
MR T-5 CA steel grade tinning substrates of the embodiment of the present invention, chemical composition mass percent include：C 0.05~
0.074%, Si≤0.02%, Mn 0.35~0.50%, P≤0.015%, S≤0.010%, Als 0.025~0.065%, N
0.0040~0.0080%, O≤0.0030%, remaining is Fe and impurity.
The manufacturing method of above-mentioned MR T-5 CA steel grade tinning substrates, includes the following steps：
It will smelt after the slab comprising the chemical composition that continuous casting obtains heated, progress roughing and finish rolling, to obtain
Obtain hot rolled plate；The hot rolled plate is subjected to section cooling；The hot rolled plate is batched, hot-rolled finished product is obtained；It is rolled into described
Product carry out pickling, cold rolling and continuous annealing annealing, obtain cold rolling finished product.
Each step in the present embodiment manufacturing method described in detail below：
The temperature heated in the Hot Strip Rolling is 1200~1280 DEG C, and slab austenite can be promoted to homogenize,
Ensure hot rolling finishing temperature.
Roughing uses 1+5 passages in the Hot Strip Rolling.
Intermediate base is 38~40mm in the Hot Strip Rolling so that finish rolling reduction ratio reaches 93% or more, to be formed
The hot rolling microstructure of fine uniform.
The finishing temperature of finish rolling is 860~900 DEG C in the Hot Strip Rolling, ensures that finish rolling is completed to roll in austenitic area
System, prevents mixed crystal from occurring.
The temperature batched in the Hot Strip Rolling is 550~590 DEG C so that strip completes phase transformation before batching, and obtains
The logical uniform structure property of volume is obtained, low temperature batches the surface quality for ensureing strip.
Hot-rolled finished product thickness >=1.8mm in the Hot Strip Rolling reduces hot-rolled process surface defect, improves plate form quality
Amount, reduces smooth repair rate, rolls rolling stability to improve acid.
It it is 630~660 DEG C in the cold rolled annealed continuous annealing annealing temperature in the process, process annealing is conducive to obtain tiny
Ferritic structure reduces energy consumption, reduces the addition of alloy, reduce cost while ensureing hardness, intensity.
It is 1.6~2.2% in the cold rolled annealed smooth elongation percentage in the process, to eliminate yield point elongation, improves product
Aging resistance energy ensures hardness, intensity.And small smooth elongation percentage can meet hardness strength requirement, and it is online to meet high-volume
Planisher production requirement.
In the cold rolled annealed 0.15~0.35mm of cold rolling finished product thickness in the process.It is more advantageous to the plating of 0.15mm Ultra-thins
The production of tinbase plate.What the embodiment of the present invention obtained is low-crackle sensitive tinning substrate.
The low-carbon MR T-5 CA tinning substrates produced using the method for the present invention are applicable to production soft MR T-5
The MR T-5 CA tin plates of CA (HR30T mean values about 63) and conventional hardness (HR30T mean values about 65) rank have low slab angle
Transverse crack cracking frequency, great surface quality, the characteristics of suitable for tank processed.
In order to which above and other purpose, feature and the advantage of the present invention can be clearer and more comprehensible, number cited below particularly is implemented
Example, to illustrate MR T-5 CA steel grades tinning substrates of the present invention and its manufacturing method.
1-5 of the embodiment of the present invention provides MR T-5 CA steel grade tinning substrates, chemical composition mass percent such as table 1
It is shown.
1 chemical composition of table (wt%)
Embodiment 1
The preparation method of the MR T-5 CA steel grade tinning substrates of above-described embodiment 1, includes the following steps：
The slab of 1 chemical composition mass percent of above-described embodiment is formed using conventional continuous cast method, specification is thick × wide
=230mm × 1000mm.Then, enable slab by hot tandem i.e. successively by heating, roughing de-scaling, roughing, crop end,
Finish rolling de-scaling, section cooling, batches carry out hot continuous rolling at finish rolling, wherein heating furnace heating temperature is 1210 DEG C, and roughing uses 1+5
Passage, intermediate base are 38mm, and mm finishing mill unit finishing temperature is 880 DEG C, and coiling temperature is 570 DEG C, hot rolled thickness 1.8mm.This
Sample batches after roughing, finish rolling, section cooling by coiling machine；Then, hot rolled coil is enabled to pass through coupled pickling and tandem mill and company
It is i.e. cold rolled annealed by uncoiling, cropping, pickling, trimming, cold continuous rolling, continuous annealing, smooth progress successively to move back unit, wherein continuous annealing is moved back
Fiery temperature is 652 DEG C, single stand skin pass mill roll-force ＜ 7MN, and cold rolling finished product thickness is 0.15mm.In this way, through overpickling, cold rolling,
It after annealing, is batched by coiling machine, it is respectively C 0.06%, Si 0.005%, Mn finally to obtain chemical composition mass percent
0.44%, P 0.010%, S 0.008%, Als 0.046%, N 0.0060%, remaining is the T-5 hardness levels of Fe and impurity
Tinning substrate, hardness HR30Tm are 64.After 200 DEG C of artificial aging 20min, hardness HR30Tm is 65, variable quantity only 1 list
Position.The cracking frequency of existing tinning substrate is 30-50%, and by the naked eye, the tinning substrate that the present embodiment obtains almost does not have
There is crackle.
Embodiment 2
The preparation method of the MR T-5 CA steel grade tinning substrates of above-described embodiment 2, includes the following steps：
Form the slab of embodiment 2 in chemical composition mass percent such as table 1 using conventional continuous cast method, specification be it is thick ×
Width=230mm × 1000mm.Then, enable slab by hot tandem i.e. successively by heating, roughing de-scaling, roughing, cropping
Tail, finish rolling, section cooling, batches carry out hot continuous rolling at finish rolling de-scaling, wherein heating furnace heating temperature is 1250 DEG C, and roughing uses
1+5 passages, intermediate base are 40mm, and mm finishing mill unit finishing temperature is 880 DEG C, and coiling temperature is 575 DEG C, hot rolled thickness 2.0mm.
In this way, after roughing, finish rolling, section cooling, batched by coiling machine；Then, enable hot rolled coil by coupled pickling and tandem mill and
Continuous annealing unit is i.e. cold rolled annealed by uncoiling, cropping, pickling, trimming, cold continuous rolling, continuous annealing, smooth progress successively, wherein continuous annealing
Annealing temperature is 635 DEG C, skin pass rolling power ＜ 7MN, and cold rolling finished product thickness is 0.22mm.In this way, through overpickling, cold rolling, annealing
Afterwards, it is batched by coiling machine, it is respectively C 0.065%, Si 0.004%, Mn finally to obtain chemical composition mass percent
0.40%, P0.008%, S 0.006%, Als0.040%, N0.0050%, O 0.0020%, remaining is the T-5 of Fe and impurity
Hardness level tinning substrate, hardness HR30Tm are 66.After 200 DEG C of artificial aging 20min, hardness HR30Tm is 66.7, is become
Change amount only 0.7 unit.The cracking frequency of existing tinning substrate is 30-50%, by the naked eye, the plating that the present embodiment obtains
Tinbase plate is almost without crackle.
Embodiment 3
The preparation method of the MR T-5 CA steel grade tinning substrates of above-described embodiment 3, includes the following steps：
Form the slab of embodiment 3 in chemical composition mass percent such as table 1 using conventional continuous cast method, specification be it is thick ×
Width=230mm × 1000mm.Then, enable slab by hot tandem i.e. successively by heating, roughing de-scaling, roughing, cropping
Tail, finish rolling, section cooling, batches carry out hot continuous rolling at finish rolling de-scaling, wherein heating furnace heating temperature is 1200 DEG C, and roughing uses
1+5 passages, intermediate base are 40mm, and mm finishing mill unit finishing temperature is 860 DEG C, and coiling temperature is 550 DEG C, hot rolled thickness 2.2mm.
In this way, after roughing, finish rolling, section cooling, batched by coiling machine；Then, enable hot rolled coil by coupled pickling and tandem mill and
Continuous annealing unit is i.e. cold rolled annealed by uncoiling, cropping, pickling, trimming, cold continuous rolling, continuous annealing, smooth progress successively, wherein continuous annealing
Annealing temperature is 630 DEG C, skin pass rolling power ＜ 7MN, and cold rolling finished product thickness is 0.25mm.In this way, through overpickling, cold rolling, annealing
Afterwards, it is batched by coiling machine, it is respectively C 0.05%, Si 0.008%, Mn finally to obtain chemical composition mass percent
0.35%, P 0.006%, S 0.004%, Als 0.025%, N 0.0040%, O 0.0020%, remaining is Fe and impurity
T-5 hardness level tinning substrates, hardness HR30Tm are 68.After 200 DEG C of artificial aging 20min, hardness HR30Tm is 68.6,
Variable quantity only 0.6 unit.The cracking frequency of existing tinning substrate is 30-50%, by the naked eye, what the present embodiment obtained
Tinning substrate is almost without crackle.
Embodiment 4
The preparation method of the MR T-5 CA steel grade tinning substrates of above-described embodiment 4, includes the following steps：
Form the slab of embodiment 4 in chemical composition mass percent such as table 1 using conventional continuous cast method, specification be it is thick ×
Width=230mm × 1000mm.Then, enable slab by hot tandem i.e. successively by heating, roughing de-scaling, roughing, cropping
Tail, finish rolling, section cooling, batches carry out hot continuous rolling at finish rolling de-scaling, wherein heating furnace heating temperature is 1280 DEG C, and roughing uses
1+5 passages, intermediate base are 38mm, and mm finishing mill unit finishing temperature is 900 DEG C, and coiling temperature is 590 DEG C, hot rolled thickness 2.3mm.
In this way, after roughing, finish rolling, section cooling, batched by coiling machine；Then, enable hot rolled coil by coupled pickling and tandem mill and
Continuous annealing unit is i.e. cold rolled annealed by uncoiling, cropping, pickling, trimming, cold continuous rolling, continuous annealing, smooth progress successively, wherein continuous annealing
Annealing temperature is 660 DEG C, skin pass rolling power ＜ 7MN, and cold rolling finished product thickness is 0.35mm.In this way, through overpickling, cold rolling, annealing
Afterwards, it is batched by coiling machine, it is respectively C 0.074%, Si 0.01%, Mn finally to obtain chemical composition mass percent
0.50%, P 0.005%, S 0.002%, Als 0.065%, N 0.008%, O 0.001%, remaining is the T- of Fe and impurity
5 hardness level tinning substrates, hardness HR30Tm are 69.After 200 DEG C of artificial aging 20min, hardness HR30Tm is 70, variation
Measure only 1 unit.The cracking frequency of existing tinning substrate is 30-50%, by the naked eye, the plating tinbase that the present embodiment obtains
Plate is almost without crackle.
5 manufacturing method of embodiment is similar to Example 1, repeats no more.
Elongation percentage (A50) is measured by tension test in the embodiment of the present invention, and testing standard is GB/T228.1.
Technical solution in above-mentioned the embodiment of the present application, at least has the following technical effect that or advantage：
MR T-5 CA steel grade tinning substrates of the present invention, chemical composition mass percent include：C 0.05~0.074%,
Si≤0.02%, Mn 0.35~0.50%, P≤0.015%, S≤0.010%, Als 0.025~0.065%, N 0.0040
~0.0080%, O≤0.0030%, remaining is Fe and impurity；The present invention is by by carbon, manganese element and the nitrogen in steel
Content optimizes combination, can be used for producing the MR T-5 CA hard tinned plates of 0.15~0.35mm of thickness, due to using high nitrogen
The composition design of high alumina, meanwhile, nitrogen in steel element is fully fixed by excessive aluminium element, forms aluminium nitride, is remarkably improved anti-
Aging performance.In addition low silicone content can guarantee good surface quality.Since carbon content is in low-carbon range, can effectively prevent
Slab angle transverse fissure occurs, while can reduce hot-rolled coil intensity, rolls roll-force to reduce acid, realizes 0.15mm Ultra-thins
Steady production.In addition, the advantageous effect of low-carbon chemical composition also resides in welding spark when can reduce downstream user tank,
Welding process stability is improved, realizes the high speed tank of >=600 tanks/minute.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.Obviously, those skilled in the art can be to the present invention
Carry out various modification and variations without departing from the spirit and scope of the present invention.If in this way, these modifications and changes of the present invention
Within the scope of the claims of the present invention and its equivalent technology, then the present invention is also intended to exist comprising these modification and variations
It is interior.
Claims (9)
1. a kind of MR T-5CA steel grade tinning substrates, it is characterised in that：Its chemical composition mass percent includes：C 0.05~
0.074%, Si≤0.02%, Mn 0.35~0.50%, P≤0.015%, S≤0.010%, Als 0.025~0.065%, N
0.0040~0.0080%, O≤0.0030%, remaining is Fe and impurity.
2. MR T-5CA steel grade tinning substrates according to claim 1, it is characterised in that：The MR T-5CA steel grades are tin plating
The thickness of substrate is 0.15~0.35mm.
3. MR T-5CA steel grade tinning substrates according to claim 1, it is characterised in that：The MR T-5CA steel grades are tin plating
The hardness HR30Tm of substrate is 60-70.
4. according to the manufacturing method of any one of the claim 1-3 MR T-5CA steel grade tinning substrates, it is characterised in that：Including
Following steps：
It will smelt after the slab comprising the chemical composition that continuous casting obtains heated, progress roughing and finish rolling, to obtain heat
Roll plate；The hot rolled plate is subjected to section cooling；The hot rolled plate is batched, hot-rolled finished product, the thickness of the hot-rolled finished product are obtained
Degree >=1.8mm；The hot-rolled finished product is subjected to pickling, cold rolling and continuous annealing annealing, obtains cold rolling finished product, the cold rolling finished product thickness
For 0.15~0.35mm；
Wherein, the heating temperature is 1200~1280 DEG C, and the finishing temperature of the finish rolling is 860~900 DEG C.
5. the manufacturing method of MR T-5CA steel grades tinning substrate according to claim 4, it is characterised in that：The roughing uses
1+5 passages.
6. the manufacturing method of MR T-5CA steel grades tinning substrate according to claim 4, it is characterised in that：In the roughing
Between base thickness be 38~40mm.
7. the manufacturing method of MR T-5CA steel grades tinning substrate according to claim 4, it is characterised in that：The temperature batched
Degree is 550~590 DEG C.
8. the manufacturing method of MR T-5CA steel grades tinning substrate according to claim 4, it is characterised in that：The continuous annealing annealing
Temperature is 630~660 DEG C.
9. the manufacturing method of MR T-5CA steel grades tinning substrate according to claim 4, it is characterised in that：The continuous annealing annealing
After further include：Planarization step, the smooth elongation percentage are 1.6~2.2%.
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Cited By (6)
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| CN110714170A (en) * | 2019-10-23 | 2020-01-21 | 首钢集团有限公司 | High-nitrogen cold-rolled steel and preparation method and application thereof |
| CN110983179A (en) * | 2019-12-16 | 2020-04-10 | 首钢集团有限公司 | Steel for one-time cold rolling and continuous annealing packaging 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 |
| CN114635095A (en) * | 2022-03-23 | 2022-06-17 | 邯郸市金泰包装材料有限公司 | Tinning plate containing sunflower pattern for aerosol can bottom cover and production method thereof |
| CN115747614A (en) * | 2022-11-17 | 2023-03-07 | 唐山瑞丰钢铁（集团）有限公司 | Production method of steel for tinned substrate |
| CN117587330A (en) * | 2024-01-19 | 2024-02-23 | 江苏省沙钢钢铁研究院有限公司 | High-nitrogen high-purity tinplate and production method thereof |
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| 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 |
| CN114635095A (en) * | 2022-03-23 | 2022-06-17 | 邯郸市金泰包装材料有限公司 | Tinning plate containing sunflower pattern for aerosol can bottom cover and production method thereof |
| CN115747614A (en) * | 2022-11-17 | 2023-03-07 | 唐山瑞丰钢铁（集团）有限公司 | Production method of steel for tinned substrate |
| CN117587330A (en) * | 2024-01-19 | 2024-02-23 | 江苏省沙钢钢铁研究院有限公司 | High-nitrogen high-purity tinplate and production method thereof |
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