CN101487097B - High strength cold rolling packaging steel belt and production method thereof - Google Patents
High strength cold rolling packaging steel belt and production method thereof Download PDFInfo
- Publication number
- CN101487097B CN101487097B CN2009103005970A CN200910300597A CN101487097B CN 101487097 B CN101487097 B CN 101487097B CN 2009103005970 A CN2009103005970 A CN 2009103005970A CN 200910300597 A CN200910300597 A CN 200910300597A CN 101487097 B CN101487097 B CN 101487097B
- Authority
- CN
- China
- Prior art keywords
- cold rolling
- percent
- steel
- high strength
- steel belt
- 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
Landscapes
- Heat Treatment Of Sheet Steel (AREA)
Abstract
The invention relates to a cold rolling packaging steel belt and a preparation method thereof, which belong to the metallurgical technology field. The technological problem to be solved by the invention is that a high strength cold rolling packaging steel belt with higher tensile strength and low cost and a preparation method thereof are provided. The chemical components of the packaging steel belt are as follows (wt percent): 0.11 percent to 0.17 percent of C, 0 to 0.05 percent of Si, 0.25 percent to 0.55 percent of Mn, 0 to 0.025 percent of P, 0 to 0.020 percent of S, 0.02 percent to 0.08 percent of Al and 99.099 percent to 99.618 percent of Fe. The preparation method comprises the steps of billet heating, hot rolling, cooling, coiling, pickling, cold rolling and bluing. The tensile strength of the made steel belt finished product is more than or equal to 800MPa, the elongation is more than or equal to 10 percent. The steel belt has good performance of repeated bending, simple craft, low cost and wide application in the packaging of steel products.
Description
Technical field
The invention belongs to metallurgical technology field, particularly cold rolling packaging steel belt and preparation method thereof.
Background technology
In recent years, steel belt for packages has been played the part of considerable role in the middle of market competition.The quality quality of steel belt for packages directly affects the reputation of quality, the competitiveness of product in market and enterprise of operating rate, the steel product packing of each operation.The kind of strap can be divided into regular tenacity, high strength, three ranks of superstrength by intensity rank.High strength, super-strength strap are used to into bell-type annealing stokehold coil of strip bundling and weight greater than 5 tons finished product packing, and all the other adopt regular tenacity straps.High-intensity packing mainly comprises ambient temperature mechanical properties and processing performance with the steel band performance requriements, the production difficult point is that finished product steel belt has advantages of higher tensile strength and certain plasticity, alternating bending ability when using that requirement possesses certain steel band, crooked position does not allow to occur crack defect.Main technical requirements sees Table 1.
The requirement of table 1 high strength cold rolling packaging steel belt salient features
| Grade of steel | Rm/MPa | A/％ | Alternating bending number of times (inferior) |
| High intensity levels | ≥800 | ≥6 | ≥3 |
The high strength cold rolling packaging steel belt chemical composition design adopts low C-Mn alloying usually or carries out micro-Nb Alloying Treatment scheme, Mn content is generally 1.00%, Nb content is generally 0.020%, hot rolling technology adopts controlled rolling and controlled cooling, cold rolling back steel band is produced through the thermal treatment of off-line continous way, its technical characterstic is to have considered to add the effect that alloying element brings solid solution strength enhancing and precipitation strength morely, but, influenced promoting the use of of aforesaid method because cause smelting cost higher after adding a large amount of alloying elements.Also do not occur at present having than lower-cost high strength cold rolling packaging steel belt of high-tensile while.
Summary of the invention
First technical problem to be solved by this invention provides a kind ofly to be had than high-tensile and lower-cost high strength cold rolling packaging steel belt.
High strength cold rolling packaging steel belt of the present invention is a benchmark with the total amount of high strength cold rolling packaging steel belt, in simple substance, chemical ingredients is (wt%): C:0.11～0.17, Si:0～0.05, Mn:0.25～0.55, P:0～0.025, S:0～0.020, Al:0.02～0.08, Fe:99.099～99.618.
The crystalline structure of high strength cold rolling packaging steel belt of the present invention comprises ferrite and perlite, is benchmark with the cumulative volume of crystalline structure, and ferritic percent by volume is 75～85%, and pearlitic percent by volume is 15～25%.
Preferably, ferritic percent by volume is 78～85% in the high strength cold rolling packaging steel belt, and pearlitic percent by volume is 15～22%.Described ferritic crystal grain diameter is 5.6～7.9 microns, is preferably 5.6～7.0 microns, and perlite is a heterogeneous structure, no crystal grain diameter.
Ferrite refers to C and is dissolved in formed interstitial solid solution among α～Fe, has body-centered cubic crystal structure.Perlite is one of phase morphology of steel, and α～Fe accounts for 88% by weight, Fe3C accounts for 12% for the isothermal transformation product of steel supercooled austenite, its constituent, and its profile is divided into sheet and granular (relevant with steel supercooled austenite speed of cooling).For soft steel, the uniform austenite cooling of chemical ingredients back forms lamellar pearlite usually, if the austenite uneven components when especially having secondary cementite remaining, can form granular pearlite, improves the toughness of steel.Ferrite and pearlitic percent by volume can adopt the method for well known to a person skilled in the art to record, for example GB/T 6394 metallographic methods.
High strength cold rolling packaging steel belt provided by the invention has advantages of higher tensile strength and good unit elongation, meets the requirement of high strength cold rolling packaging steel belt technical indicator fully.
Second technical problem to be solved by this invention provides the preparation method of above-mentioned high strength cold rolling packaging steel belt, specifically comprises steel billet heating, hot rolling, cools off, batches, pickling, the cold rolling and treatment step that turns blue.Wherein, the chemical ingredients of steel billet is (wt%): C:0.11～0.17, Si:0～0.05, Mn:0.25～0.55, P:0～0.025, S:0～0.020, Al:0.02～0.08, Fe:99.099～99.618.Steel billet heating steps temperature is 1185～1220 ℃, and the time is 0.5～1.5 hour; The breaking down temperature of hot-rolled step is 1100～1200 ℃, and finishing temperature is 850～890 ℃; Cooling step adopts and rolls back leading portion water-cooled; Batch 530～570 ℃ of step temperature, the cold rolling step draft is 72.3%, and the cold-rolled steel strip treatment step thermal treatment temp of turning blue is 380～420 ℃.
Further, steel billet can adopt the method for well known to a person skilled in the art to be made through converter smelting, LF refining, electrically heated, continuous casting working procedure by blast-melted; The smelting condition of converter smelting is 1670～1690 ℃ of tapping temperatures, and the oxygen activity condition is 100～500PPm during tapping; It is 20～40ppm that the LF refining is fed Al line final deoxygenation control oxygen activity of molten steel with secondary, the argon gas of molten steel pot bottom feeding pressure 200～400Pa 4～6 minutes.
The invention has the beneficial effects as follows:
1, the inventive method adopts technological measures such as control hot rolling Heating temperature, finishing temperature, coiling temperature, cold rolling draft and the temperature of turning blue in production process, make the steel band finished product tensile strength 〉=800MPa of acquisition, unit elongation 〉=10%, repeated bending performance is good.
2, adopt the low Mn scheme of the low Si-of low C-during chemical composition design, guarantee the degree of cleaning of steel by the chemical ingredients of control steel.
3, adopt the method for controlled rolling and controlled chilling to be rolled into chill volume, after the off-line thermal treatment, the intensity of steel and plasticity index obtain replying, and owing to the protective oxide film that forms one deck densification in steel strip surface, improve the antiseptic property of steel band.
4, compare with the high-intensity packing band that low C-Mn alloying or micro-Nb alloying are produced, technology is simple to operation, production cost is lower, has high cost performance, promotes the use of to have good prospects.
Embodiment
The production method technical process of high strength cold rolling packaging steel belt of the present invention is as follows:
Converter smelting → LF refining → electrically heated → continuous casting → hot rolling → cooling → pickling → cold rolling → rip cutting → edging → turn blue → water-cooled → air cooling → oiling → packing warehouse-in
Converter smelting is specially blast-melted and smelting furnace material smelted in converter and obtains molten steel, then with deoxidation of molten steel and carry out alloying; In the molten steel after in the alloying step, carbonaceous material, aluminum-manganese-iron alloy and aluminum shot being joined deoxidation, (with the molten steel gross weight is benchmark to obtain the blast furnace molten steel, in simple substance) be C:0.11～0.17%, Si:0～0.05%, Mn:0.25～0.55%, P:0～0.025%, S:0～0.020%, Al:0.02～0.08%, Fe:99.099～99.618% (weight percent).The content of S is less than or equal to into 0.02% of stove molten iron gross weight in the feed stock for blast furnace in order to make, and can adopt the low-sulfur pure iron to smelt.In order to prevent the especially scaling loss of manganese element of metallic element, the oxygen activity when strict control smelting process temperature and tapping, smelting condition is 1670～1690 ℃ of tapping temperatures, the oxygen activity condition is [a during tapping
0] 100～500PPm.The carbonaceous material that smelting process is added is a carbonaceous material well known in the art, is preferably in pitch coke, hard coal and the carbon dust one or more.The time of smelting is the time of the smelting of routine, is preferably 35～45 minutes.
The purpose of deoxidation of molten steel is to reduce oxygen activity of molten steel to improve yield of alloy, and the add-on of reductor can be the amount of being routinely added to of this area, is preferably 0.045～0.055Kg/ stove.Described reductor can be preferably aluminum shot for the conventional various reductors that use in this area.
The method that well known to a person skilled in the art is adopted in the mode of alloying step batch charging, external refining.Alloying step after the deoxidation comprises carbonaceous material, manganeseirom and aluminum shot is joined in the molten steel after the deoxidation, (with described molten steel gross weight is benchmark to obtain molten steel, in simple substance) C:0.11～0.17%, Si:0～0.05%, Mn:0.25～0.55%, P:0～0.025%, S:0～0.020%, Al:0.02～0.08%, Fe:99.099～99.618% (weight percent).
For the chemical ingredients that guarantees steel is even, after the alloying molten steel jar is carried out argon bottom-blowing and handle.The condition that described argon bottom-blowing is handled is 1600～1650 ℃ of temperature, pressure 200～400 handkerchiefs, 4～8 minutes time.
The LF refinement step is finely tuned oxygen activity of molten steel, purity and temperature, utilizing secondary to feed Al line final deoxygenation control oxygen activity of molten steel is 20～40ppm, the argon gas of molten steel pot bottom feeding pressure 200～400Pa 4～6 minutes, it is condition that argon flow amount turns over greatly with molten steel, can avoid molten steel secondary oxidation and temperature to occur descends too fast, steel inclusion is fully floated, further improve the steel degree of cleaning.
The electrically heated step is the operation that steel billet is reached be suitable for hot processing temperature, is the basic working procedure that plastic forming of metals is produced.Steel billet heated to adopt well known to a person skilled in the art various heating installations and heating means, heating installation can be upright heating, hot ingot shove charge, and type of heating can adopt periodically or continous way.
The continuous casting step can adopt the method for well known to a person skilled in the art, the inventive method is poured into the tundish of roasting in advance with molten steel after refining, and the continuous casting machine of protecting through whole process is cast into slab.After the casting, can cool off, as naturally cooling at room temperature according to ordinary method.
Hot-rolled step is that the slab of will cast is rolled after heating.Rolling purpose is to make high strength cold rolling packaging band hot rolling material base reach required thickness.The rolling pass of hot-rolled sheet steel band of the present invention is 4～6 of roughing, 5～6 of finish rolling, and every rolling every time rolling thickness of high strength cold rolling packaging band hot rolling material base that makes together of frame reduces 2～9 millimeters.
The hot rolled start rolling temperature refers to that steel billet enters the temperature of milling train, heats under this temperature, and fully solid solution microalloy element (Mn, Al) is avoided reducing the effect of microalloy element in steel behind its formation liquation carbide.The hot rolled finishing temperature refers to that steel band goes out the temperature of milling train, for the thickness and the mechanical property that make the high strength cold rolling packaging band even, adopt hot rolling intermediate blank Coil Box Technology, make hot rolling intermediate blank head, in, afterbody keeps specific finishing temperature, present technique adopts the technology of austenitic area finish to gauge, if temperature is low excessively, may enter ferrite/austenite mixed zone, the crystal structure ratio is raise, unfavorable to performance; Temperature is too high, batches the back finished product and organizes slightly, and it is excessive that AlN reaches the perlite phase size mutually, unfavorable to performance.Hot rolling Heating temperature of the present invention is 1180～1220 ℃, time is 0.5～1.5 hour, and the roughing temperature is 1100～1200 ℃, and finishing temperature is 850～890 ℃, be preferably 870～890 ℃, the temperature control in the course of hot rolling can make steel be in complete austenite structure before the finish rolling outlet; And avoid austenite structure too thick, helping controlling the hot-rolled finished product ferrite grain size is 5.6～7.9 microns.
Cooling step can adopt the method for various routines.Generally, bring, comprise through rolling thin plate steel band and curling, send to cold rolling next step processing of carrying out then through runoff table for sheet steel.For tissue and the performance requriements that satisfies the hot-rolled sheet steel band, must be in a short period of time from the steel band that milling train comes out, the temperature that is cooled to curl under very high speed of cooling is curled.For example, described refrigerative speed is 10～40 ℃/second, is cooled to 530～570 ℃.
Acid pickling step can adopt the method for various routines, and as the shallow-slot type continuous pickling, purpose is iron scale and other mass defect of removing the hot rolled strip surface, improves steel band plate shape and surface quality, for cold rolling and subsequent handling are created good condition.
Cold rolling step can adopt the method for various routines, and as four frame HC milling train continuous production, cold rolling draft is 72.3%, and purpose is to obtain good plate shape and dimensional precision, for subsequent handling is created good condition.
The step of turning blue cold-rolled steel strip thermal treatment temp is 380～420 ℃.
The detection method of various compositions is respectively carbon steel and middle-low alloy steel spark source Atomic Emission Spectral Analysis method among the present invention, and national standard is GB/T4336.
High strength cold rolling packaging steel belt of the present invention adds an amount of Mn alloy on the basis of employing low-carbon-equivalent during chemical composition design, does not contain microalloy element, possesses lower production cost.Utilize in addition refined crystalline strengthening, build up and working hardening improve chill volume mechanical property, reply by the control performance of turning blue after the thermal treatment process, obtain excellent comprehensive performances.
The invention will be further elaborated below in conjunction with embodiment.Embodiment only is used to illustrate the present invention, rather than limits the present invention by any way.
The preparation of embodiment 1 high strength cold rolling packaging steel belt
A, smelting molten steel: smelting equipment is 120 tons of top blown converter, blast-melted as raw material, 1377 ℃ of blast-melted temperature, add steelmaking ingredient melting to the 1690 molten steel jar of ℃ tapping, aluminium ferromanganese (source alloy company limited is gathered in the Wuxi) pre-deoxidation of tapping and adding 1.2 tons at 1/3 o'clock, 0.05Kg reductor aluminum shot (source alloy company limited is gathered in the Wuxi) carry out deoxidation, add pitch coke (Flos Bombacis Malabarici Yangcheng metallurgic auxiliary materials company limited) and ferromanganese (Dechang iron alloy company limited) then in the molten steel after deoxidation, make the content of each composition in the molten steel for (gross weight with molten steel is a benchmark, wt%) C:0.16, Si:0.03%, Mn:0.39, P:0.025, S:0.011, Al:0.03, all the other are Fe.Chain-wales carries out the argon bottom-blowing processing to the molten steel jar outside stove subsequently, argon pressure 200～400Pa, and the time is 4～8 minutes.
Making the content of oxygen in molten steel by the addition of controlling reductor is 10～50ppm, prevent the manganese oxidation as far as possible, thereby guarantee that manganese exists with simple substance in the high strength cold rolling packaging band of preparation, rather than exist, to give full play to the function of simple substance manganese with oxide form.
B, LF electrically heated: secondary is fed Al line final deoxygenation, and the molten steel pot bottom feeds certain pressure, and (200～400Pa) argon gas 4～6 minutes, it is condition that argon flow amount turns over greatly with molten steel, 1600 ℃ of LF processing final temperatures.
C, continuous casting: the molten steel jar is transported to casting position, the basal sliding mouth of a river Al matter stopper (company limited is assisted in Anyang smelting) of molten steel jar, and molten steel flows into tundish automatically, carries out continuous casting through Al matter stopper, drainage to crystallizer.Whole process adopts covering slag to protect casting, and the casting postcooling becomes steel billet, and the composition of steel billet is C:0.16, Si:0.03%, Mn:0.39, P:0.025, S:0.011, Al:0.03, and all the other are Fe.
D, hot rolling: the slab rolling temperature of coming out of the stove is 1210 ℃ (eliminating dendritic segregation, control original austenite grains sizes), and the roughing temperature is 1089 ℃, 872 ℃ of finish rolling finishing temperatures; The type of cooling adopts rolls back leading portion water-cooled, 550 ℃ of coiling temperatures.The rolling pass of finish rolling is 6, and every time rolling thickness of high strength cold rolling packaging made-up belt that makes is respectively 35～26 millimeters, 26～18 millimeters, 18～12 millimeters, 12～8 millimeters, 8～5 millimeters and 5～3.25 millimeters.
E, pickling: weld (CLECIM welding machine) through pinching after the straightener aligning is taken the lead behind the coils of hot-rolled steel, enter the pickling entry loop then and run to the tension force stretching straightener, the band steel is carried out template correct and break phosphorus, through carrying out rinsing by the level Four rinsing device again after the pickling of level Four pickling tank, to remove the residual acid solution on the belt steel surface.The band steel drying device oven dry that goes out behind the rinse tank enters the milling train kink.
F, cold rolling strap intensity are pressed 〉=850Mpa, and cold rolling draft 72.3%, cold rolling finished product thickness are 0.9mm.Control cold rolling draft purpose and be the carrying raw material condition of turning blue in order to obtain to be fit to.
G, rip cutting, edging: after the cold-rolled steel coils uncoiling, carry out the steel band aligning through 12 roller levelling arms, carry out rip cutting according to different strap width, the steel band edge burr is handled and is adopted emery wheel to polish continuously after the rip cutting.
H, turn blue: temperature is 395 ℃, and adopt the high-intensity packing band hot rolling grain fineness number of soft steel production be more than 11 grades, roll up firmly metallographic structure be Deformation structure+, these factors all reduce recrystallization temperature, must suitably reduce thermal treatment temp.
I, water-cooled, air cooling, oiling: the band steel is after turning blue, and outlet is carried out water-cooled and reduced near the room temperature, removes the water stain of surface through squeezing roller then, and the band steel behind the air cooling enters oiling rolls, evenly oiling of surface, packing warehouse-in then.
The coiled sheet of preparation is carried out measuring mechanical property, detect the tensile strength Rm and the elongation A of room temperature respectively, tensile property carries out according to GB/T228 metallic substance tensile test at room temperature method.Cold rolling packaging steel belt finished product tensile strength (Rm) is 870MPa, and unit elongation (A) is 13%, and alternating bending technological test performance is qualified, meets the technical qualification requirement of high strength cold rolling packaging band.
The preparation of embodiment 2 high strength cold rolling packaging steel belts
The preparation method of high strength cold rolling packaging steel belt is substantially the same manner as Example 1, and different is that the molten steel composition that converter smelting obtains is (wt%) C:0.15%, Si:0.04%, Mn:0.41%, P:0.021%, S:0.016%, Al:0.04%, all the other are Fe, and produce steel billet with aforementioned molten steel, the steel billet composition is (wt%) C:0.15%, Si:0.04%, Mn:0.41%, P:0.021%, S:0.016%, Al:0.04%, all the other are Fe.Adopt steel billet to produce the high strength cold rolling packaging band, 1215 ℃ of slab tapping temperatures, finishing temperature are 888 ℃, and coiling temperature is 555 ℃, and hot-rolled finished product thickness 3.25mm, cold rolling finished product thickness are 0.9mm, and cold rolling draft is 72.3%, and the temperature of turning blue is 390 ℃.
The coiled sheet of preparation is carried out measuring mechanical property, detect the tensile strength Rm and the elongation A of room temperature respectively, tensile property carries out according to GB/T228 metallic substance tensile test at room temperature method.Finished product packing band Rm is 885MPa, and A is 12%, and alternating bending technological test performance is qualified, meets the technical qualification requirement of high strength cold rolling packaging band.
Comparative Examples
The molten steel composition that converter smelting obtains is (wt%) C:0.14%, Si:0.23%, Mn:0.35%, P:0.021%, S:0.015%, all the other are Fe, produce the high strength cold rolling packaging band with this molten steel, the preparation method is substantially the same manner as Example 1, and different is that hot-rolled process parameter is 1208 ℃ of slab tapping temperatures, finishing temperature is 860 ℃, coiling temperature is 600 ℃, and hot-rolled finished product thickness 3.25mm, cold rolling finished product thickness are 0.9mm, cold rolling draft is 72.3%, and the temperature of turning blue is 395 ℃.
The coiled sheet of preparation is carried out measuring mechanical property, detect the tensile strength Rm and the elongation A of room temperature respectively, tensile property carries out according to GB/T228 metallic substance tensile test at room temperature method.Finished product packing band Rm is 780MPa, and A is 14%, and alternating bending technological test performance is qualified, meets the technical qualification requirement of regular tenacity cold rolling packaging band, but does not meet the technical requirements of high strength cold rolling packaging band.
Comparative Examples has adopted the bigger chemical composition design of Si content, promptly strengthens solution strengthening, and finished product should meet the technical qualification requirement of high strength cold rolling packaging band.But compare with embodiment 1,2, even the molten steel raw material has improved the strengthening phase component (Si) of steel, finished product still can not reach the requirement of high strength cold rolling packaging band, mainly be because its hot rolling technology is different with the inventive method, the austenite finish to gauge that Comparative Examples is taked+middle warm rolling taking technique (embodiment of the invention 1,2 is batched for low temperature) has caused steel band finished product grain-size excessive, and the hot rolling technology of the embodiment of the invention 1,2 has then been avoided the appearance of this phenomenon.
To sum up, the contained alloying element of high strength cold-rolled steel band steel billet materials of the present invention is less, by controlling the processing parameter of each step in process of production, antiseptic property, repeated bending performance and the tensile strength of steel band have been improved, make the steel band finished product satisfy the performance requriements of high strength cold rolling packaging steel belt, greatly reduce production cost.
Claims (5)
1. high strength cold rolling packaging steel belt, it is characterized in that: chemical ingredients is C:0.11～0.17, Si:0～0.05, Mn:0.25～0.55, P:0～0.025, S:0～0.020 by weight percentage, Al:0.02～0.08, Fe:99.099～99.618, and each chemical ingredients sum is 100%; Ferritic percent by volume is 75～85% in the crystalline structure, and pearlitic percent by volume is 15～25%.
2. high strength cold rolling packaging steel belt according to claim 1 is characterized in that: ferritic percent by volume is 78～85% in the crystalline structure, and pearlitic percent by volume is 15～22%.
3. the preparation method of the described high strength cold rolling packaging steel belt of claim 1, it is characterized in that: comprise steel billet heating, hot rolling, cool off, batch, pickling, the cold rolling and treatment step that turns blue, steel billet heating steps temperature is 1185～1220 ℃, and the time is 0.5～1.5 hour; The breaking down temperature of hot-rolled step is 1100～1200 ℃, and finishing temperature is 850～890 ℃; Batch 530～570 ℃ of step temperature, the cold rolling step draft is 72.3%, and the cold-rolled steel strip treatment step thermal treatment temp of turning blue is 380～420 ℃.
4. the preparation method of high strength cold rolling packaging steel belt according to claim 3, it is characterized in that: described steel billet chemical ingredients is C:0.11～0.17, Si:0～0.05, Mn:0.25～0.55, P:0～0.025, S:0～0.020 by weight percentage, Al:0.02～0.08, Fe:99.099～99.618, and each chemical ingredients sum is 100%.
5. according to the preparation method of claim 3 or 4 described high strength cold rolling packaging steel belts, it is characterized in that: cooling step adopts and rolls back leading portion water-cooled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103005970A CN101487097B (en) | 2009-02-27 | 2009-02-27 | High strength cold rolling packaging steel belt and production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103005970A CN101487097B (en) | 2009-02-27 | 2009-02-27 | High strength cold rolling packaging steel belt and production method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101487097A CN101487097A (en) | 2009-07-22 |
| CN101487097B true CN101487097B (en) | 2011-01-26 |
Family
ID=40890157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009103005970A Expired - Fee Related CN101487097B (en) | 2009-02-27 | 2009-02-27 | High strength cold rolling packaging steel belt and production method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101487097B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886217B (en) * | 2010-07-09 | 2012-07-04 | 上海宝钢包装钢带有限公司 | Medium-strength packaging steel strip and production method thereof |
| CN102409226A (en) * | 2010-09-21 | 2012-04-11 | 鞍钢股份有限公司 | Steel belt for packaging and production method thereof |
| CN103451524B (en) * | 2013-09-09 | 2015-07-29 | 武汉钢铁(集团)公司 | Thickness is tensile strength >=1000MPa japanning tie steel and the production method of 0.5mm |
| CN110629232A (en) * | 2019-09-30 | 2019-12-31 | 张家港扬子江冷轧板有限公司 | Pickling process of ultrathin high-strength steel strip for automobile |
| CN113481429A (en) * | 2021-06-10 | 2021-10-08 | 马鞍山钢铁股份有限公司 | High-strength bluing bundled steel with tensile strength greater than 980MPa and manufacturing method thereof |
| CN113621887B (en) * | 2021-07-23 | 2022-06-10 | 山东钢铁集团日照有限公司 | Production method of low-cost cold-rolled steel strip raw material for packing belt |
| CN116079418B (en) * | 2023-02-23 | 2023-11-28 | 祝桥金属材料启东有限公司 | Ultra-high strength cold-rolled steel and manufacturing method and device thereof |
-
2009
- 2009-02-27 CN CN2009103005970A patent/CN101487097B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101487097A (en) | 2009-07-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102181805B (en) | Steel plate and method thereof used for producing water heater linear enamel by flexible thin slab rolling line | |
| CN101914725B (en) | Low-carbon ultra-deep punching cold-rolling steel sheet and production method thereof | |
| CN101289731B (en) | CrMnTi narrow hardenability strip pinion steels and method of manufacture | |
| CN106756507B (en) | The method for producing Thin Specs high-carbon steel based on ESP bar strip continuous casting and rolling flow paths | |
| CN101487097B (en) | High strength cold rolling packaging steel belt and production method thereof | |
| CN108842024A (en) | A kind of phosphorous IF high-strength steel band of 390MPa grades of cold rolling and its LF-RH duplex production technology | |
| CN103805918B (en) | A kind of high magnetic induction grain-oriented silicon steel and production method thereof | |
| CN101935802B (en) | Method for producing 490MPa level acid-washing-free hot rolled steel plate | |
| CN106399835A (en) | Production method of high-strength automobile hub steel | |
| CN101906570A (en) | Tinning substrate for deep-punching food can and production method thereof | |
| CN103789625A (en) | Method for producing micro-alloyed cold-rolled low-alloy high-strength steel by virtue of cover annealing line | |
| CN103509996B (en) | The manufacture method of tensile strength 400MPa grade high-strength carbon manganese structure iron | |
| CN102925794A (en) | Cold-rolled steel strip for double-layer welded tube | |
| CN101219434A (en) | Method for producing steel for automobile wheel based on bar strip continuous casting and rolling flow path | |
| CN104946968A (en) | Cold-rolled tin plate for beverage can bottom cover and production method of cold-rolled tin plate | |
| CN106811684B (en) | 750Mpa grades of container hot rolled steel plates of yield strength and its manufacturing method | |
| CN103276287A (en) | Cold-rolled steel strip for high-drawing-performance flux-cored wire, and making method thereof | |
| CN101935801A (en) | Hot rolled steel plate of 490 MPa level and production method thereof | |
| CN108929986A (en) | A kind of high-strength abrasion-proof automobile brake hot rolled steel plate and its production technology | |
| CN100560773C (en) | A kind of high-strength anti-fatigue steel products and manufacture method thereof | |
| CN104419865A (en) | Cold-rolled tin plate for easy-to-open lid and production method of cold-rolled tin plate | |
| JP7395719B2 (en) | Thin high corrosion resistant steel and its manufacturing method | |
| CN107699797A (en) | 390MPa levels continuous annealing cold rolled automobile structural steel and iron and its production method | |
| CN102978511A (en) | Method for producing hot-rolled steel plate for automobile girder steel by low cost | |
| CN105369134B (en) | 400MPa grades is exempted from pickling vehicle structure hot rolled steel plate and its production method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110126 Termination date: 20170227 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |