CN1174109C - Tagger steel strip for battery casing, and producing method thereof - Google Patents
Tagger steel strip for battery casing, and producing method thereof Download PDFInfo
- Publication number
- CN1174109C CN1174109C CNB021390762A CN02139076A CN1174109C CN 1174109 C CN1174109 C CN 1174109C CN B021390762 A CNB021390762 A CN B021390762A CN 02139076 A CN02139076 A CN 02139076A CN 1174109 C CN1174109 C CN 1174109C
- Authority
- CN
- China
- Prior art keywords
- steel
- steel band
- present
- hot rolling
- rolling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The present invention relates to an ultrathin steel band for a battery case and a production method for the ultrathin steel band, which belongs to the field of low alloy steel manufacture. Mn is used for solid solution strengthening, traces of Nb and Ti are compounded and added, and the condition that the excess Ti content is less than 0.01% is controlled. The molten iron desulphurization, the rotary furnace blowing, the RH vacuum treatment and the continuous casting are used, the hot rolling soaking temperature is 1200+/-50 DEG C, the final rolling temperature FT satisfies Ar3 <=FT<=Ar3 +30 DEG C, and the winding temperature is from 650 to 720 DEG C. A hot rolling plate is pickled, and a single-frame rolling mill is used for cold roll. The ultrathin precise steel band with high intensity, high elongation rate, low earing ratio and low yield ratio is produced through continuous annealing, longitudinal shearing and oil coating package. The production method of the present invention is simple, the steel band can be implemented in large steel plants, and compared with the cost of an import plate, the cost of the hot rolling plate is greatly reduced. The steel band of the present invention can be widely used for manufacturing electronic basic elements, such as outer shells of dry batteries, communication cables, television color tubes, carbon film resistors, etc.
Description
Technical field
The present invention relates to a kind of battery case with steel band and production method thereof as thin as a wafer, specifically a kind ofly be used to make the high strength of alkali formula drying battery shell, super deep-draw cold-rolled steel strip and production method thereof, belong to low alloy steel manufacturing field.
Background technology
Before the present invention, cold-rolled thin steel strip is used for the manufacturing production of the parts of automobile, TV colored picture tube and drying battery shell more.Thin steel band is used for the manufacturing of automobile, just like the people such as KATOT " automobile cold-rolled high-tensile deep drawing sheet " application, patent No. JP2978007 of Japanese KAWAKI Iron And Steel Company, adopt phosphor intensified and add manganese, silicon simultaneously and further improve armor plate strength.But its maximum problem is to phosphorate to cause steel-sheet secondary fragility to rise rapidly, though accurately adding trace B in this patent handles, can partly suppress the embrittlement influence of phosphorus, but boron is the lightweight element, chemical property is active, and because of the easy oxidation scaling loss of boron, boron content is difficult to accurate control during steel mill actual smeltings, if the excessive recrystallization temperature that can improve cold-reduced sheet again rapidly descends the punching performance of steel plate.Steel band is used for the TV colored picture tube as thin as a wafer, as having introduced the deep-draw adopting ultra low-carbon steel to produce to have high-elongation value steel plate as thin as a wafer in the Japanese kokai publication sho 62-280328 patent " the good picture tube of plasticity and magnetic shielding with the production method of inner shield material ", thickness of slab is 0.15mm.Steel band is as drying battery shell steel as thin as a wafer, and thickness of slab is 0.20～0.30mm, owing to require to have concurrently high-tensile σ
b＞320MPa, super deep drawing quality, great surface quality, so the production difficulty is big.The used steel band of China alkali formula drying battery factory is mainly from Japan, Korea S's import at present.For example, the battery steel band of Battery Company from day this film mountain special industry company import inspired confidence in south, and C content is 6～9ppm, belongs to Super-ULC (super Ultra-low carbon) steel.Background technology 2 and 3 weak point are: 1. C content requirement harshness must be controlled at below 0.003%; 2. there is not outstanding strengthening element; 3. steel band tensile strength sigma
bOn the low side, σ
b＜310MPa, and yield tensile ratio is higher, σ
s/ σ
b＞0.65.Background technology 3 also exists the simple Nb of employing to handle fixation of C, N interstitial atom, and the band rigidity can be very responsive to the variation of production environment condition, makes the deficiency of processing parameter control window constriction.
Summary of the invention
The purpose of this invention is to provide a kind of battery case steel band and production method thereof as thin as a wafer, can overcome the deficiency of above-mentioned steel band, the steel band that provides has high-tensile, high-elongation, low system ear, low yield strength ratio characteristics, and production method is simple, the equipment of existing steel mill just can be produced, and is applicable to make alkali formula drying battery shell.
In order to realize purpose of the present invention, designed a kind of battery case with steel band as thin as a wafer, the chemical ingredients that it is characterized in that steel percentage ratio is by weight counted: C≤0.005, Si≤0.02, Mn 0.15～0.30, P0.01～0.03, S≤0.015, N≤0.004, Al 0.02～0.07, and Ti 0.01～0.03, Nb 0.01～0.025, surplus is Fe and inevitably being mingled with, and Ti and Nb be compound interpolation, and satisfies 1. 0.9＜(Ti+Nb)/(4C+3.428N+1.5S)＜1.5; 2. Ti-4C-3.428N-1.5S＜0.01%.
It is vital in the production steel process of the present invention chemical ingredients carefully being designed.
Carbon (C) is strengthening element the most general in the steel, and carbon increases armor plate strength, and plasticity reduces.For the impact briquetting steel, what need is low yield strength, high unit elongation, and for example the carbon content of general punching press steel plate is C≤0.08% (as the 08Al steel of China); And along with the reduction of carbon content in the steel, every processability index of steel plate improves rapidly.On the other hand, the no ageing key character that is senior deep-draw with steel, when dissolved carbon content in the steel 〉=0.003%, steel plate begins to occur the yield extension phenomenon, present significantly ageing gradually, Forming Quality descends, therefore general control carbon content≤0.005% in the IF of super deep-draw (gap-free atom) steel plate.
Silicon (Si) also uses as a kind of strengthening element in some ultra low-carbon steel.But battery case if silicone content increases, is difficult to remove removing iron scale, plate surface quality variation with steel band requirement surface quality is very high as thin as a wafer during the hot-rolled sheet pickling; And add Si and make steel plate toughness variation, so steel of the present invention does not adopt the Si reinforcement.
Phosphorus (P) is a kind of effective element that improves armor plate strength, but can increase steel plate fragility.Steel of the present invention does not adopt and adds the P reinforcement; Handling but also painstakingly do not take off P, is 0.01%～0.03% to get final product by the ordinary production level control P content of ultra low-carbon steel during smelting.
Sulphur (S) is harmful element in deep drawing steel, should remove as far as possible.S forms MnS, TiS sulfides in steel, therefore control sulphur content＜0.015%.
Aluminium (Al) adds as reductor in deep drawing steel, and purpose mainly is to remove the oxygen that is dissolved in when smelting in the molten steel.Aluminium can suppress the solid solution of nitrogen in ferrite as deciding the nitrogen agent in addition, eliminates strain aging, improves low-temperature flexibility.Steel control Al content of the present invention is 0.02%～0.07%.
Nitrogen (N) makes yield strength and tensile strength increase in steel, and hardness value rises, and processability descends; For the deep-draw steel, an important baneful influence of nitrogen is to cause steel plate surrender effect and strain aging.In addition, N content increases, if metallurgical technology control is improper, N is easy to form with Ti, Al etc. the inclusion of band corner angle, and is totally unfavorable for punching performance, so punching press always will reduce nitrogen as much as possible with steel, controls nitrogen content≤0.004% in the general extra-deep drawing sheet steel.
For improving the steel plate deep drawability, reach gap-free atom (IF) state, palpus fixation of C, N interstitial atom, steel of the present invention adopt the compound interpolation of Ti, Nb to handle.This be because, to the Ti-IF steel, though stable performance has stronger in-plane anisotropy during punching press; And in the Nb-IF steel, C and Nb are combined into NbC, and N and Al are combined into AlN, Mn and S are combined into MnS, in-plane anisotropy in its mechanical property (Δ r value) is less, but mechanical property is very responsive to the variation of rolling technology, adopts high temperature to batch and can make coiled sheet poor-performing end to end.Adopt the compound interpolation IF of Ti, Nb steel, can make C and Nb be combined into NbC, N and Ti are combined into TiN, are characterized in (1) stable performance; (2) in-plane anisotropy is little; (3) mechanical property is more superior than Nb-IF steel.
The present invention has designed a kind of high strength, super deep-draw cold-rolled steel strip, and its outstanding chemical ingredients feature is:
1. adopt Mn to strengthen, and control Nb content, overcome the excessive crystal lattice distortion effects that causes of strengthening element atom and mother metal Fe atomic volume mismatch, both can improve σ
bIt is too high that value can suppress yield tensile ratio again.
The Mn amount of containing of high strength deep drawing steel is not to be high more good more.The Mn too high levels, very big to the deep drawability influence, for example Mn 〉=0.5% can cause the steel plate unit elongation to descend rapidly.And the Nb too high levels then can significantly postpone the steel plate recrystallization process, worsens deep drawability.Control Nb content both can satisfy the demand that has certain solid solution Nb in the production board in 0.01%～0.025% scope in steel of the present invention, and Δ r value is descended, and punching out system ear significantly reduces, and is unlikely again steel plate recrystallization temperature is obviously raise.
2. carry out the compound interpolation of trace Ti, Nb and handle, design 0.9＜(Ti+Nb)/(4C+3.428N+1.5S)＜1.5, the inhibition zone steel is made the ageing of performance inconsistency in the process and finished product steel belt.The ratio of as far as possible controlling (Ti+Nb)/(4C+3.428N+1.5S) during actual production approaches 1; Why not the lower value of overcritical this ratio is because in the process of setting of smelting strand greater than 1, Al in the steel, Mn etc. can participate in the fixing of N, S interstitial atom, the Ti content of actual needs is reduced, then can bring disadvantageous effect to finished product steel plate deep drawability on the contrary if superfluous Ti, Nb amount is too high.
3. control superfluous Ti content (promptly referring to Ti-4C-3.428N-1.5S)＜0.01%, total Ti content is 0.01%～0.03% in the steel.Because solid solution Ti is higher in the steel, then easily encourage nitriding in the production process, worsen the surface of steel plate characteristic.In addition, controlling superfluous Ti content also can suppress P and separate out disadvantageous effect to avoid it that deep-draw texture is formed with FeTiP two second phases tiny, disperse.
4. C, N, S, Si content design by the level of commercially producing of the present ultra low-carbon steel of China, and concrete composition range percentage ratio is by weight counted C≤0.005, Si≤0.02, S≤0.015, N≤0.004 is easy to control like this under the smelting equipment condition of the existing big steel mill of China, workable.
In order to realize purpose of the present invention, the present invention also provides a kind of above-mentioned battery case production method of steel band as thin as a wafer, adopt desulfurizing iron, bessemerize, RH vacuum-treat, continuous casting, hot rolling, batch, pickling, cold rolling, slitting and oiling packing, it is characterized in that: 1200 ± 50 ℃ of hot rolling soaking temperatures, finishing temperature FT satisfies Ar
3≤ FT≤Ar
3+ 30 ℃, 650～720 ℃ of coiling temperatures, hot-rolled sheet adopt single rolling mill cold rolling through pickling, through continuous annealing, and slitting and oiling packing.
1200 ± 50 ℃ of steel hot rolling soaking temperatures of the present invention adopt high temperature to batch 650～720 ℃ of coiling temperatures after the hot rolling.The hot rolling reeling temperature generally influences answer, recrystallize and the separating out of second phase of substructure and grows up, hot-rolled sheet batches under 〉=650 ℃ comparatively high temps, by " Oswald that moral slaking " effect, can impel the second phase particle to gather the carrying out of alligatoring and substructure recrystallization process, thereby reduce the recrystallization temperature of cold-reduced sheet, this extremely helps the raising of finished product cold-reduced sheet unit elongation.
The cold rolling employing single stand mill of steel of the present invention is rolling, and a rolling process has been rolled, and technology controlling and process is succinct.
Recrystallization annealing process after steel of the present invention is cold rolling adopts continuous annealing.Each operation stage of ultra low-carbon steel production process all influences the final performance of finished product steel plate, but with regard to its degree, steel-making and annealing operation have the greatest impact.Why steel of the present invention adopts continuous annealing and without bell-type annealing, is because compare with bell-type annealing, and continuous annealing has following advantage:
(1) the steel band mechanical property still is that width is all more even in length; (2) steel band planeness height, plate shape is good; (3) surface quality is good, does not have the bonding phenomenon; (4) with short production cycle; (5) annealing region is wide, and the speed of cooling degree of freedom is big, is beneficial to the exploitation of product innovation.
Continuous annealing requires cold-reduced sheet must finish recrystallize and grain growth process at short notice in producing, and this just needs material pure; And steel of the present invention belongs to ultra low-carbon steel, just in time satisfies this requirement.In addition, continuous annealing is very beneficial for micro-Nb solid solution in the ferrite matrix of finished product steel plate.
Omit smooth, finishing procedure after the steel continuous annealing of the present invention,, very easily destroy steel band matt surface structure because of smooth operation is directly press working to be carried out in band zone, steel top layer.Do slight straightening as if the local end to end plate shape of coil of strip is undesirable in the actual production, and straightening processing system aligns to strip width direction entire cross section, does not damage steel strip surface roughness pattern.
Steel rolling of the present invention and Design of Heat Treatment Process are succinct, and be with short production cycle, and the steel loss of operation significantly improves lumber recovery in the middle of effectively reducing, and the whole volume of steel band performance is more even, and the surface cleanliness height.
Band steel of the present invention also can be widely used in electronics base components such as making telecommunication cable, TV colored picture tube, carbon resister except that the manufacturing that can be used for alkali formula drying battery shell.
Steel of the present invention and production method thereof have following outstanding advantage:
1, the present invention designs C the most rambunctious, N, S, Si constituent content by the level of commercially producing of the present ultra low-carbon steel of China, rather than adopt super ultra low-carbon steel (C is below 10ppm) like that as the import plate, in smelting production, be easy to the hit composition like this, and cost reduces.
2, to adopt Ti fixed interval (FI) C, N, S atom be main in the present invention, and make micro-Nb solid solution in ferrite matrix, and both having suppressed the band rigidity can fluctuation and ageing, has suppressed the steel plate in-plane anisotropy again, makes the decline of Δ r value, and punching out system ear significantly reduces.
3, adopt Mn solution strengthening and strengthen, suppressed the rising of steel plate yield tensile ratio effectively without P.Compare band steel σ of the present invention with the import steel band
b〉=340MPa has the tensile strength height and the low characteristics of yield tensile ratio, general σ
s/ σ
b≤ 0.5, the punching out battery case is difficult for breaking, and the stack shell fixed in shape is good.Steel of the present invention not only strengthening element and micro alloying element is reasonable in design, and it is rolling and Design of Heat Treatment Process is succinct, with short production cycle, the steel loss of operation in the middle of effectively reducing, significantly improve lumber recovery, the whole volume of steel band performance is more even, and the surface cleanliness height, price also declines to a great extent than import plate, is subjected to user's welcome deeply.
Embodiment
In conjunction with specific embodiments the present invention is described in further detail as follows:
Embodiment 1: smelt battery case of the present invention steel band as thin as a wafer, the chemical ingredients of steel percentage ratio is by weight counted: C 0.003, and Si 0.014, and Mn 0.24, P 0.016, and S 0.0058, and N 0.0017, and Al 0.026, Ti 0.017, and Nb 0.020, and surplus is Fe and inevitably is mingled with.Batch under 650 ℃ of temperature after the hot rolling, cold rolling finish to gauge thickness of slab 0.25mm, band part slitting and oiling packing after the power continuous annealing a little.The finished product steel belt performance is σ
s=160MPa, σ
b=348MPa, δ
50=40%, Vickers' hardness H
v=98, surface (on average) roughness R
a=0.25 μ m.At No. 5, certain Battery Company punching out, No. 7 batteries, the strip width specification is 89mm, 113mm, under the high speed stamping speed (138/minute) of equipment regulation, the coil of strip of each width specifications exhausts, the battery case that punching out goes out none useless, substandard products, and passed through all operations such as nickel plating, pressing mold, pressurising assembling, possess very little, the good (R of surface quality of system ear
a＜0.3 μ m), the low (σ of yield tensile ratio
s/ σ
b＜0.5), intensity, hardness ideal (σ
b〉=340MPa) characteristics, use properties is better than external import steel band.
Embodiment 2: smelt battery case of the present invention steel band as thin as a wafer, the chemical ingredients of steel percentage ratio is by weight counted: C 0.004, and Si 0.010, and Mn 0.26, P 0.011, and S 0.0098, and N 0.0025, and Al 0.04, Ti 0.02, and Nb 0.017, and surplus is Fe and inevitably is mingled with.The hot rolling reeling temperature is set at 700 ℃, cold rolling finish to gauge thickness of slab 0.30mm, annealing back slitting and oiling packing.The finished product steel belt performance is σ
s=175MPa, σ
b=359MPa, δ
50=44%, Vickers' hardness H
v=101, surface (on average) roughness R
a=0.31 μ m.At No. 5 batteries of Battery Plant's punching out, the bandwidth specification is 110mm, and this equipment drawing velocity is 60/minute, and the battery case that punching out goes out is excellent, and is all qualified.
Battery case of the present invention is with steel band and production method thereof as thin as a wafer, and the composition design is rationally careful, and the band steel has the tensile strength height and the low characteristics of yield tensile ratio, and whole volume performance is even; Production process reduces, the lumber recovery height; The punching out battery case is difficult for breaking, and the stack shell fixed in shape is good.Be specially adapted to the manufacturing of drying battery shell, can be used for making electronics base components such as telecommunication cable, TV colored picture tube, carbon resister in addition.
Claims (2)
1. a battery case is with steel band as thin as a wafer, and the chemical ingredients that it is characterized in that steel percentage ratio is by weight counted: C≤0.005, Si≤0.02, Mn 0.15～0.30, P 0.01～0.03, S≤0.015, N≤0.004, Al 0.02～0.07, Ti 0.01～0.03, and Nb 0.01～0.025, and surplus is Fe and inevitably is mingled with, and Ti and Nb are compound interpolation, and satisfy 1. 0.9＜(Ti+Nb)/(4C+3.428N+1.5S)＜1.5; 2. Ti-4C-3.428N-1.5S＜0.01%.
2. a battery case of implementing claim 1 is with the production method of steel band as thin as a wafer, adopt desulfurizing iron, bessemerize, RH vacuum-treat, continuous casting, hot rolling, batch, pickling, cold rolling, slitting and oiling packing, it is characterized in that: 1200 ± 50 ℃ of hot rolling soaking temperatures, finishing temperature FT satisfies Ar
3≤ FT≤Ar
3+ 30 ℃, 650～720 ℃ of coiling temperatures, hot-rolled sheet adopt single rolling mill cold rolling through pickling, through continuous annealing, and slitting and oiling packing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021390762A CN1174109C (en) | 2002-09-20 | 2002-09-20 | Tagger steel strip for battery casing, and producing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021390762A CN1174109C (en) | 2002-09-20 | 2002-09-20 | Tagger steel strip for battery casing, and producing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1401807A CN1401807A (en) | 2003-03-12 |
| CN1174109C true CN1174109C (en) | 2004-11-03 |
Family
ID=4749880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021390762A Expired - Fee Related CN1174109C (en) | 2002-09-20 | 2002-09-20 | Tagger steel strip for battery casing, and producing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1174109C (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101042434B1 (en) * | 2007-10-29 | 2011-06-16 | 현대제철 주식회사 | A cold rolledsteel sheet and method for manufacturing the same |
| CN102286699B (en) * | 2011-08-15 | 2013-11-06 | 武汉钢铁(集团)公司 | Corrosion-resistant steel with impact molding rate not smaller than 150 per minute for cell shell and preparation method thereof |
| CN106148803B (en) * | 2016-08-30 | 2017-11-24 | 唐山钢铁集团有限责任公司 | A kind of production method of deep-draw battery case steel |
| CN107603473A (en) * | 2017-09-19 | 2018-01-19 | 扬州荣光电缆材料有限公司 | A kind of nuclear grade cable ultra-high strength and toughness microalloying steel band and its processing method |
| CN108728737A (en) * | 2018-04-18 | 2018-11-02 | 马鞍山钢铁股份有限公司 | A kind of Ultra-low carbon battery case cold-rolled steel sheet and production method |
| CN109530527A (en) * | 2018-12-05 | 2019-03-29 | 常德力元新材料有限责任公司 | A kind of preparation method of punched nickel-plated steel band |
| CN110541123B (en) * | 2019-09-05 | 2021-06-15 | 首钢集团有限公司 | Cold-rolled strip steel for battery case and preparation method thereof |
| CN112011732A (en) * | 2020-07-31 | 2020-12-01 | 马鞍山钢铁股份有限公司 | DDQ-grade hot-rolled pickling cold-formed steel and manufacturing method thereof |
| CN112481450B (en) * | 2020-11-10 | 2022-05-13 | 鞍钢股份有限公司 | Ultra-low inclusion cold-rolled thin strip for high-speed stamping and steelmaking optimization method thereof |
| CN113528955B (en) * | 2021-06-29 | 2022-03-25 | 邯郸钢铁集团有限责任公司 | High-performance wide-plate-width IF steel and production method thereof |
| CN116904863B (en) * | 2023-09-07 | 2023-12-08 | 江苏省沙钢钢铁研究院有限公司 | High-cleanliness high-carbon steel and low-carbon-emission production method thereof |
-
2002
- 2002-09-20 CN CNB021390762A patent/CN1174109C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1401807A (en) | 2003-03-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102199721B (en) | Manufacture method of high-silicon non-oriented cold-rolled sheet | |
| CN102395695B (en) | Cold-rolled steel sheet having excellent slow-aging property and high curability in baking, and method for producing same | |
| CN100567545C (en) | A kind of high grade non-oriented silicon steel and manufacture method thereof | |
| EP3719160B1 (en) | Non-oriented electrical steel sheet with excellent magnetism and manufacturing method therefor | |
| EP3272898A1 (en) | High magnetic induction and low iron loss non-oriented electrical steel sheet with good surface state and manufacturing method therefor | |
| CN1174109C (en) | Tagger steel strip for battery casing, and producing method thereof | |
| CN100999050A (en) | Production method of low iron loss high magnetic sensing cold milling orientation less electrical steel plate | |
| US9623457B2 (en) | Double cold reduction strip for shadow mask and process for producing the same | |
| CN102719741A (en) | Hot-galvanized high-strength steel with 220MPa-level yield strength and production method thereof | |
| CN101358272A (en) | Method for preparing high grade non-oriented electrical steel adding rare earth cerium | |
| EP0421087A2 (en) | Method of manufacturing a steel sheet | |
| CN107794452A (en) | A kind of thin strap continuous casting superelevation strength and ductility product continuously surrenders automobile steel and its manufacture method | |
| CN108546887A (en) | A kind of hot-dip aluminizing silicon steel plate and its production method with excellent processing forming | |
| CN113774274B (en) | Low-cost well-formed battery case steel and production method thereof | |
| CN111778452A (en) | Non-oriented electrical steel plate with excellent magnetic property and smelting method thereof | |
| JP3314833B2 (en) | Cold rolled steel sheet excellent in workability and method for producing the same | |
| JPS5849622B2 (en) | Manufacturing method of cold-rolled steel sheet for ultra-deep drawing by continuous annealing | |
| CN112779386A (en) | Cold-rolled hot-dip galvanized steel plate for easy-open-end pull ring and manufacturing method thereof | |
| CN103952624A (en) | Ultrahigh-strength painted bundling belt with thickness of 0.2mm and production method thereof | |
| CN101348852A (en) | Method for producing oriented electrical steel by low temperature slab heating | |
| CN112553522B (en) | Cold-rolled hot-dip aluminum-zinc plated steel plate with excellent bending performance and manufacturing method thereof | |
| CN113462960A (en) | Preparation method of 340 MPa-grade niobium-containing hot-galvanized high-strength IF steel | |
| JPH06122940A (en) | Cold rolled steel sheet and galvanized cold rolled steel sheet having excellent baking hardenability and also cold monaging property and production thereof | |
| CN1141412C (en) | band steel for shadow mask and its preparing process | |
| JPH0657337A (en) | Production of high strength galvannealed steel sheet excellent in formability |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20041103 Termination date: 20130920 |