CN101941021A - Method for producing extra-deep drawing cold-rolled steel plate based on ASP process - Google Patents
Method for producing extra-deep drawing cold-rolled steel plate based on ASP process Download PDFInfo
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Abstract
The invention discloses a method for producing an extra-deep drawing cold-rolled steel plate based on a sheet billet continuous casting and rolling process in ASP, and belongs to the technical field of rolled steel. After molten steel meeting the component requirement is obtained by adopting molten iron pretreatment, a converter, LF and RH, a hot-rolled substrate is produced by the sheet billet continuous casting and rolling process in the ASP, and the hot-rolled substrate is subjected to acid washing, cold rolling, cover annealing and leveling processes to obtain the extra-deep drawing cold-rolled steel plate. Compared with the prior art, the performance of the produced extra-deep drawing cold-rolled steel plate meets the European standard EN10130-2006, meanwhile, the production cost is reduced, energy is saved and consumption is reduced. The method broadens the variety range of products produced by a sheet billet continuous casting and rolling production line in the ASP, can meet the increasing requirements of the industries of automobiles, home appliances, buildings, transports, light industry and the like for plates, and improves the product competitiveness of enterprises.
Description
Technical field
The present invention relates to a kind of method of producing super deep-draw level cold-rolled steel sheet, particularly relate to a kind of method based on the super deep-draw level of ASP medium thin slab continuous casting and rolling explained hereafter cold-rolled steel sheet.
Background technology
The technological process of production of traditional super deep-draw level cold-rolled steel sheet is: molten steel+continuous casting+continuous casting billet heats again+and hot rolling+cold rolling+annealing+smooth, its continuous casting steel billet thickness is generally 230mm, and continuous casting steel billet needs to carry out hot rolling after the heating again.At present also there is not the above cold-rolled steel sheet of deep-draw level when hot rolling, to adopt the report of hot delivery and hot charging explained hereafter.Patent 200710130974.1 has been reported the method for employing CSP (CSP) explained hereafter deep-draw level cold-rolled steel sheet, its technology is: directly enter 7 frame tandem rollings after the continuous casting billet process of passing through tunnel stove short time soaking with 70mm thickness, cold rolling through four frame tandem mills then, adopt bell-type annealing afterwards.This explained hereafter efficient height, energy-conservation, but, be unsuitable for producing more high-grade cold-reduced sheet because its thickness of strand is 70mm, and compression ratio is little, and rolling board quality is relatively poor.And this production technology and the industrialized mass production that is unrealized.
Adopt the traditional processing technology flow process to produce and the continuous casting and rolling technique of sheet bar flow process, because the thermal history (and deformation condition and process) of the two is different, determine its structural transformation process difference, this has also just determined same steel grade its performance characteristics difference to some extent when adopting different technological processes to produce.Typical continuous casting and rolling technique of sheet bar and the difference of traditional handicraft on flow process are as shown in Figure 1.
ASP medium thin slab continuous casting and rolling production line is the complete set technology that Chinese metallurgy industry has independent intellectual property right, it is the strip production technology that continuous casting and rolling directly links to each other, the ASP process characteristic is that thickness of strand is 135mm～150mm, realized the short flow process that middle minimal thickness sheet billet continuous casting and belt steel rolling directly link to each other, had straight dress and directly roll energy-efficient outstanding feature.The ASP production technology is not used for production deep-draw level and super deep-draw level and above rank punching press cold-rolled steel sheet so far as yet.This strand also will be different from the continuous casting and rolling technique of sheet bar flow process through its structure property of hot-rolled finished product of 1 roughing mill and 6 frame finishing mill rolling production.
Summary of the invention
The object of the present invention is to provide a kind of method based on the super deep-draw level of ASP medium thin slab continuous casting and rolling Wiring technology production cold-rolled steel sheet, this method adopts ASP medium thin slab continuous casting and rolling flow process, be rolled after directly entering the soaking pit soaking behind the sheet billet continuous casting, shorten technological process, improved production efficiency; Owing to adopt laminar flow cooling segmentation process for cooling, hot-rolled substrate grain size number and the high problem of yield strength when having solved ASP technology and being cold rolling feeding.
For ASP medium thin slab continuous casting and rolling flow process, the main difference of producing the IF steel with old process is: (1) further controls the clarity of steel by the dark desulfurization of KR molten iron; (2) smelting-sheet billet continuous casting process increases C, increases the control technology of N; (3) control technology of sheet billet continuous casting process as-cast structure; (4) furnace temp system; (5) hot rolling technology system and process for cooling system; (6) follow-up cold-rolling process system; (7) annealing process system.
For achieving the above object, a kind of method provided by the invention based on the super deep-draw level of ASP explained hereafter cold-rolled steel sheet, it is characterized in that: after adopting molten iron preliminary treatment+converter+LF+RH to obtain to satisfy the molten steel of composition requirement, through ASP medium thin slab continuous casting and rolling explained hereafter hot-rolled substrate, hot-rolled substrate obtains super deep-draw level cold-rolled steel sheet by pickling, cold rolling, bell-type annealing, smooth operation.
Concrete steps are as follows:
(1) molten iron preliminary treatment: adopt the dark desulfurization of KR method molten iron preliminary treatment, the back control of skimming is gone into the sulfur content of stove molten iron below 0.003% (wt/wt);
(2) converter: high-purity oxygen (purity is greater than 99.5%) is adopted in converter, keeps malleation in the stove, and aim carbon and temperature are controlled 0.03～0.06% (wt/wt), 1620～1675 ℃ respectively, guarantees finishing slag basicity R=4～5, carries out the pushing off the slag tapping;
(3) the LF refining furnace carries out deoxidation slag making and temperature control, change the converter slag of hyperoxia voltinism into FeO+MnO quality percentage composition less than＜1.5% reproducibility slag, effectively completely cut off slag transmits oxygen in molten steel carrying out, and liquid steel temperature is controlled at 1640～1680 ℃ by heated by electrodes.
(4) cleanliness factor of dark decarburization, raising molten steel is carried out in the vacuum refining of RH stove, the form and the microalloying of control field trash handled, (begin circulation by timely oxygen blast at molten steel, vacuum pressure 250mbar begins oxygen blast when following), and the pressure (in 4 minutes vacuum chamber pressure being reduced to below the 2mbar) that reduces vacuum chamber fast makes, and carbon content descends rapidly in the steel.
(5) continuous casting: adopting thickness is the ASP continuous casting production of 135mm, and ladle roughing slag detects automatically, adopts the argon gas sealing between ladle and the long nozzle, and tundish uses low-carbon (LC) alkalescence cylinder-packing+carbon-free covering agent, and crystallizer uses the low-carbon (LC) high-viscosity covering slag;
(6) soaking: above-mentioned strand directly enters soaking pit after shearing through two cooling bending straightenings, and heating and temperature control is not less than 910 ℃ at 1200～1300 ℃ to guarantee the hot continuous rolling finishing temperature;
(7) hot rolling: the strand that goes out soaking pit is rolling through entering four roller reversible roughing mills behind the high-pressure water descaling, and rolling through six frame hot continuous rolling units then is the hot-rolled substrate of thickness 2～5mm, and hot rolling finishing temperature is 910～950 ℃;
(8) laminar flow cooling: thin plate is to batch rolling by coiling machine after the laminar flow cooling section cooling of 70m through length; Adopt the sparse type of cooling of two stages at the laminar flow cooling section, thereby reduce cooling velocity.After ASP technology hot rolling and laminar flow cooling, obtaining grain size is the ferrite crystal grain of ASTM7-9 level, thereby reduces the yield strength of hot rolled plate;
(9) pickling: enter descaling bath after the hot rolled coil uncoiling, pickling speed 50～100m/min, strip coiling after the pickling, pickling winds off that to enter two-shipper stand cold-rolling group behind the volume cold rolling, and cold rolling overall reduction is 60～85%;
(10) annealing, smooth: chill involving in into the bell-type annealing furnace annealing, annealing temperature are 720 ℃～740 ℃, and smooth percentage elongation is 0.3%～1.0%.
Adopt ASP medium thin slab continuous casting and rolling production line+two-shipper frame cold rolling+the super deep-draw level of bell-type annealing explained hereafter cold-rolled steel sheet is a kind of novel technology thinking.The present invention is by taking suitable smelting process, ASP hot rolling technology, cold-rolling process, annealing and flattening process, can adopt the super deep-draw level of the production cold-rolled steel sheet of this abbreviated system high efficiency, low cost of ASP, properties of product are higher than the requirement of European standard EN10130-2006 to super deep-draw level cold-rolled steel sheet.
According to the requirement of European standard DIN EN 10130-2006, the performance indications of ultra-deep punching cold-rolling steel sheet are: R
P0.2≤ 180MPa, 270MPa≤R
m≤ 330MPa, A
80〉=40%, plastic strain ratio r
90〉=1.9, work hardening index n
90〉=0.20.With the finished product steel plate mechanical property that the present invention produced be: R
P0.2≤ 150MPa, 270MPa≤R
m≤ 330MPa, A
80〉=41%, plastic strain ratio r
90〉=2.1, work hardening index n
90〉=0.21.The mechanical property of the ultra-deep punching cold-rolling steel sheet that the present invention produced reaches the European standard requirement fully.
The present invention compared with prior art, the extra deep drawing sheet steel production cost of producing is low, energy-saving and cost-reducing.This method has been widened the product variety scope that ASP medium thin slab continuous casting and rolling production line can be produced, and can satisfy the demand of industries such as growing automobile, household electrical appliances, building, communications and transportation and light industry to sheet material, has improved the product competitiveness of enterprise.
Description of drawings
Fig. 1 is that continuous casting and rolling technique of sheet bar and traditional handicraft are at the flow process comparison diagram.
Fig. 2 is the metallographic structure figure of embodiment 1 hot-rolled substrate.
Fig. 3 is the metallographic structure figure of embodiment 1 finished product steel plate.
Fig. 4 is the metallographic structure figure of embodiment 2 hot-rolled substrates.
Fig. 5 is the metallographic structure figure of embodiment 2 finished product steel plates.
The specific embodiment
Embodiment 1:
The embodiment of the invention 1 in turn includes the following steps:
(1) molten iron preliminary treatment: adopt the dark desulfurization of KR method molten iron preliminary treatment, the back control of skimming is gone into the sulfur content of stove molten iron below 0.003% (wt/wt);
Steel-making: converter adopts 120 tons converter, and tap is 148.61 tons, and the percetage by weight of carbon is 0.0469% during tapping, and tapping temperature is 1644 ℃;
The molten steel that converter is come out carries out deoxidation slag making and temperature control at the LF refining furnace, concrete technology: handle cycle 61min, heat time heating time, 34min arrived 1563 ℃ of temperature, left 1642 ℃ of temperature, and flow 300m calms the anger
3, feed aluminum shot 120kg.
The molten steel that converter is come out carries out refining in the RH stove, adopt vacuum decarburization, feed aluminum steel, add method such as ferro-titanium and adjust alloying component, the percetage by weight content (%) of the molten steel composition when refining is finished is controlled at C 0.0015, Si 0.032, Mn 0.176, P 0.011, S 0.003, Als 0.039, Ti0.075; Liquid steel temperature is 1600 ℃.
(2) continuous casting: adopting thickness is the ASP continuous casting production of 135mm, and ladle roughing slag detects automatically, adopts the Ar sealing between ladle and the long nozzle, and tundish uses low-carbon (LC) alkalescence cylinder-packing+carbon-free covering agent, and crystallizer uses the low-carbon (LC) high-viscosity covering slag.Concrete continuous casting process:
1. the bag thermometric time in: bag thermometric temperature among the 2010-05-05 00:35:41: 1558 ℃; Casting machine speed 2.5m/min; 2. the bag thermometric time in: bag thermometric temperature among the 2010-05-05 00:41:46: 1558 ℃; Casting machine speed 2.5m/min; 3. the bag thermometric time in: bag thermometric temperature among the 2010-05-05 00:49:52: 1561 ℃; Casting machine speed 2.5m/min; 4. the bag thermometric time in: bag thermometric temperature among the 2010-05-05 00:57:59: 1562 ℃; Casting machine speed 2.5m/min; 5. the bag thermometric time in: bag thermometric temperature among the 2010-05-05 01:05:05: 1559 ℃; Casting machine speed 2.5m/min; 6. the bag thermometric time in: bag thermometric temperature among the 2010-05-05 01:13:11: 1557 ℃; Casting machine speed 2.5m/min.
(3) soaking: above-mentioned strand directly enters soaking pit after shearing through two cooling bending straightenings, heating and temperature control is at 1200～1300 ℃, to guarantee that the hot continuous rolling finishing temperature is not less than 910 ℃, concrete all thermal process: bringing-up section top: 1280 ℃, bringing-up section bottom: 1265 ℃; Soaking zone top: 1270 ℃, soaking zone bottom: 1240 ℃; 95 minutes heat time heating times of slab.
(4) hot rolling: the strand that goes out soaking pit is the thick intermediate blank of 34mm through entering four roller reversible roughing mills behind the high-pressure water descaling rolling, and rolling through six frame hot continuous rolling units then is the hot-rolled substrate of thickness 4.0mm, and hot rolling finishing temperature is 930 ℃.Concrete hot rolling technology:
(5) laminar flow cooling: thin plate is to batch rolling by coiling machine after the laminar flow cooling section cooling of 70m through length.Adopt the sparse type of cooling of two stages at the laminar flow cooling section, thereby reduce cooling velocity.After ASP technology hot rolling and laminar flow cooling, obtaining grain size is the ferrite crystal grain of ASTM8 level, thereby reduces the yield strength of hot rolled plate.Concrete laminar flow cooling technology: two sections refrigerating modes: 2nd, 3,9,10,11 groups of upper headers first three arrange, back three rows are closed the lower collector pipe standard-sized sheet.
(6) pickling, cold rolling: enter descaling bath after the hot rolled coil uncoiling, pickling speed 85m/min, strip coiling after the pickling.Pickling winds off that to enter two-shipper stand cold-rolling group behind the volume cold rolling, and cold rolling overall reduction is 60-85%.Concrete acid cleaning process:
Acid liquor temperature control: 3# acid jars 85 ℃, 2# acid jars 80 ℃, 1# acid jars 78 ℃, departure ± 2 ℃.3# acid jar free acid concentration 170g/L, Fe
2+Concentration 45g/l.
Cold-rolling process: adopt the texturing working roll rolling, roughness 2.2 μ m; Emulsion saponification number 175mg, 55 ℃ of emulsion temperature, concentration 4.3% (wt/wt); Cold rolling reduction ratio 75%.
(7) annealing, smooth: chill involving in into the bell-type annealing furnace annealing, annealing temperature are 720 ℃～740 ℃, and smooth percentage elongation is 0.3%～1.0%.Concrete annealing flattening process:
Annealing process: hydrogen purity＞99%; 722 ℃ of cold-point temperatures, 739 ℃ of hot(test)-spot temperatures.
Flattening process: percentage elongation 0.4%; Planisher uncoiling tension 20; Planisher inlet tension force 42; Planisher coiling tension 48; The smooth oil mass 800mg/m that is coated with
2
The width of the finished product volume of the ASP production line of present embodiment is 1000mm, rolls up heavy 14.73 tons.The chemical composition of the super deep-draw level cold-rolled steel sheet that present embodiment is produced and mechanical property are respectively as shown in Table 1 and Table 2.The metallographic structure of hot-rolled substrate and finished product steel plate respectively as shown in Figures 2 and 3.
Table 1 surpasses the chemical composition (wt%) of deep-draw level cold-rolled steel sheet
| C | Si | Mn | P | S | Als | Ti |
| 0.0025 | 0.03 | 0.18 | 0.012 | 0.004 | 0.030 | 0.069 |
Table 2 surpasses the mechanical property of deep-draw level cold-rolled steel sheet
| ?R p0.2 | R m | A 80(％) | r 90 | n 90 |
| ?139 | 290 | 44.5 | 2.50 | 0.235 |
Embodiment 2:
The embodiment of the invention 2 in turn includes the following steps:
(1) molten iron preliminary treatment: adopt the dark desulfurization of KR method molten iron preliminary treatment, the back control of skimming is gone into the sulfur content of stove molten iron below 0.003% (wt/wt);
Steel-making: converter adopts 120 tons converter, and tap is 144.5 tons, and the percetage by weight of carbon is 0.0497% during tapping, and tapping temperature is 1631 ℃;
The molten steel that converter is come out carries out deoxidation slag making and temperature control at the LF refining furnace, concrete technology: handle cycle 52min, heat time heating time, 24min arrived 1554 ℃ of temperature, left 1648 ℃ of temperature, and flow 100m calms the anger
3, feed aluminum shot 110kg.
The molten steel that converter is come out carries out refining in the RH stove, adopt vacuum decarburization, feed aluminum steel, add method such as ferro-titanium and adjust alloying component, the percetage by weight content (%) of the molten steel composition when refining is finished is controlled at C 0.0010, Si 0.026, Mn 0.169, P 0.013, S 0.003, Als0.051, Ti0.075; Liquid steel temperature is 1590 ℃.
(2) continuous casting: adopting thickness is the ASP continuous casting production of 135mm, and ladle roughing slag detects automatically, adopts the Ar sealing between ladle and the long nozzle, and tundish uses low-carbon (LC) alkalescence cylinder-packing+carbon-free covering agent, and crystallizer uses the low-carbon (LC) high-viscosity covering slag.Concrete continuous casting process:
1. the bag thermometric time in: bag thermometric temperature among the 2010-05-20 00:16:15: 1566 ℃; Casting machine speed 2.2m/min; 2. the bag thermometric time in: bag thermometric temperature among the 2010-05-20 00:22:18: 1570 ℃; Casting machine speed 2.2m/min; 3. the bag thermometric time in: bag thermometric temperature among the 2010-05-20 00:28:16: 1571 ℃; Casting machine speed 2.2m/min; 4. the bag thermometric time in: bag thermometric temperature among the 2010-05-20 00:34:19: 1571 ℃; Casting machine speed 2.2m/min; 5. the bag thermometric time in: bag thermometric temperature among the 2010-05-20 00:40:21: 1568 ℃; Casting machine speed 2.2m/min; 6. the bag thermometric time in: bag thermometric temperature among the 2010-05-20 00:46:20: 1567 ℃; Casting machine speed 2.2m/min.
(3) soaking: above-mentioned strand directly enters soaking pit after shearing through two cooling bending straightenings, and heating and temperature control is not less than 910 ℃ more than 1200 ℃ to guarantee the hot continuous rolling finishing temperature.Concrete heating process:
Bringing-up section top: 1290 ℃, bringing-up section bottom: 1265 ℃; Soaking zone top: 1275 ℃, soaking zone bottom: 1245 ℃; 85 minutes heat time heating times of slab.
(4) hot rolling: the strand that goes out soaking pit is the thick intermediate blank of 34.2mm through entering four roller reversible roughing mills behind the high-pressure water descaling rolling, and rolling through six frame hot continuous rolling units then is the hot-rolled substrate of thickness 4.0mm, and hot rolling finishing temperature is 930 ℃.Concrete hot rolling technology:
(5) laminar flow cooling: thin plate is to batch rolling by coiling machine after the laminar flow cooling section cooling of 70m through length.Adopt the sparse type of cooling of two stages at the laminar flow cooling section, thereby reduce cooling velocity.After ASP technology hot rolling and laminar flow cooling, obtaining grain size is the ferrite crystal grain of ASTM8 level, thereby reduces the yield strength of hot rolled plate.Concrete laminar flow cooling technology:
Two sections refrigerating modes: 2nd, 3,9,10,11 groups of upper headers first three arrange, back three rows are closed the lower collector pipe standard-sized sheet.
(6) pickling, cold rolling: enter descaling bath after the hot rolled coil uncoiling, pickling speed 80m/min, strip coiling after the pickling.Pickling winds off that to enter two-shipper stand cold-rolling group behind the volume cold rolling, and cold rolling overall reduction is 60～85%; Concrete pickling cold-rolling process:
Acid cleaning process: acid liquor temperature control: 3# acid jars 85 ℃, 2# acid jars 80 ℃, 1# acid jars 78 ℃, departure ± 2 ℃.3# acid jar free acid concentration 160g/L, Fe
2+Concentration 55g/l.
Cold-rolling process: adopt the texturing working roll rolling, roughness 2.1 μ m; Emulsion saponification number 170mg, 55 ℃ of emulsion temperature, concentration 4.3% (wt/wt); Cold rolling reduction ratio 80%.
(7) annealing, smooth: chill involving in into the bell-type annealing furnace annealing, annealing temperature are 720 ℃～740 ℃, and smooth percentage elongation is 0.3%～1.0%.Concrete annealing flattening process:
Annealing process: hydrogen purity＞99%; 718 ℃ of cold-point temperatures, 741 ℃ of hot(test)-spot temperatures.
Flattening process: percentage elongation 0.43%; Planisher uncoiling tension 21; Planisher inlet tension force 40; Planisher coiling tension 48; The smooth oil mass 1000mg/m that is coated with
2
The width of the finished product volume of the ASP production line of present embodiment is 1220mm, rolls up heavy 16.545 tons.The chemical composition of the super deep-draw level cold-rolled steel sheet that present embodiment is produced and mechanical property are respectively shown in table 3 and table 4.The metallographic structure of hot-rolled substrate and finished product steel plate respectively as shown in Figure 4 and Figure 5.
Table 3 surpasses the chemical composition (wt%) of deep-draw level cold-rolled steel sheet
| C | Si | Mn | P | S | Als | Ti |
| 0.0023 | 0.03 | 0.17 | 0.013 | 0.006 | 0.038 | 0.072 |
Table 4 surpasses the mechanical property of deep-draw level cold-rolled steel sheet
| R p0.2 | R m | A 80 | r 90 | n 90 |
| 137 | 295 | 43.5 | 2.70 | 0.230 |
Claims (6)
1. method based on the super deep-draw level of ASP explained hereafter cold-rolled steel sheet, it is characterized in that, after adopting molten iron preliminary treatment+converter+LF+RH to obtain to satisfy the molten steel of composition requirement, through ASP medium thin slab continuous casting and rolling explained hereafter hot-rolled substrate, hot-rolled substrate obtains super deep-draw level cold-rolled steel sheet by pickling, cold rolling, bell-type annealing, smooth operation.
2. a kind of method based on the super deep-draw level of ASP explained hereafter cold-rolled steel sheet as claimed in claim 1 is characterized in that,
(1) molten iron preliminary treatment: adopt the dark desulfurization of KR method molten iron preliminary treatment, the back control of skimming is gone into the sulfur content of stove molten iron below 0.003% (wt/wt);
(2) converter: converter adopts purity greater than 99.5% high-purity oxygen, keeps malleation in the stove, and aim carbon and temperature are controlled 0.03～0.06% (wt/wt), 1620～1675 ℃ respectively, guarantees finishing slag basicity R=4～5, carries out the pushing off the slag tapping;
(3) the LF refining furnace carries out deoxidation slag making and temperature control;
(4) cleanliness factor of dark decarburization, raising molten steel is carried out in the vacuum refining of RH stove, the form and the microalloying of control field trash handled;
(5) continuous casting: adopting thickness is the ASP continuous casting production of 135mm, and ladle roughing slag detects automatically, adopts the argon gas sealing between ladle and the long nozzle, and tundish uses low-carbon (LC) alkalescence cylinder-packing+carbon-free covering agent, and crystallizer uses the low-carbon (LC) high-viscosity covering slag;
(6) soaking: above-mentioned strand directly enters soaking pit after shearing through two cooling bending straightenings, and heating and temperature control is not less than 910 ℃ at 1200～1300 ℃ to guarantee the hot continuous rolling finishing temperature;
(7) hot rolling: the strand that goes out soaking pit is rolling through entering four roller reversible roughing mills behind the high-pressure water descaling, and rolling through six frame hot continuous rolling units then is the hot-rolled substrate of thickness 2～5mm, and hot rolling finishing temperature is 910～950 ℃;
(8) laminar flow cooling: thin plate is to batch rolling by coiling machine after the laminar flow cooling section cooling of 70m through length;
(9) pickling: enter descaling bath after the hot rolled coil uncoiling, pickling speed 50～100m/min, strip coiling after the pickling, pickling winds off that to enter two-shipper stand cold-rolling group behind the volume cold rolling, and cold rolling overall reduction is 60～85%; (10) annealing, smooth: chill involving in into the bell-type annealing furnace annealing, annealing temperature are 720 ℃～740 ℃, and smooth percentage elongation is 0.3%～1.0%.
3. a kind of method as claimed in claim 2 based on the super deep-draw level of ASP explained hereafter cold-rolled steel sheet, it is characterized in that, it is that converter slag with the hyperoxia voltinism changes FeO+MnO quality percentage composition into less than＜1.5% reproducibility slag that described step (3) LF refining furnace carries out the control of deoxidation slag making and temperature, effectively completely cut off slag transmits oxygen in molten steel carrying out, and liquid steel temperature is controlled at 1640～1680 ℃ by heated by electrodes.
4. a kind of method based on the super deep-draw level of ASP explained hereafter cold-rolled steel sheet as claimed in claim 2 is characterized in that, described step (4) is by timely oxygen blast, and the pressure that reduces vacuum chamber fast makes, and carbon content descends rapidly in the steel.
5. as any described a kind of method among the claim 2-4, it is characterized in that described step (8) adopts the sparse type of cooling of two stages at the laminar flow cooling section, thereby reduce cooling velocity based on the super deep-draw level of ASP explained hereafter cold-rolled steel sheet.
6. a kind of method based on the super deep-draw level of ASP explained hereafter cold-rolled steel sheet as claimed in claim 5 is characterized in that, after ASP technology hot rolling and laminar flow cooling, obtaining grain size is the ferrite crystal grain of ASTM7-9 level, thereby reduces the yield strength of hot rolled plate.
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| CN111850402A (en) * | 2020-07-08 | 2020-10-30 | 鞍钢股份有限公司 | Method for producing high-strength corrosion-resistant electromagnetic iron core steel plate in short process |
| CN113584270A (en) * | 2021-08-09 | 2021-11-02 | 新疆八一钢铁股份有限公司 | Process for improving processability of steel for barrel industry |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1071959A (en) * | 1992-09-08 | 1993-05-12 | 北京科技大学 | Produce the method for extra-deep drawing sheet steel by the texture pre-treatment |
| US5286315A (en) * | 1989-03-30 | 1994-02-15 | Nippon Steel Corporation | Process for preparing rollable metal sheet from quenched solidified thin cast sheet as starting material |
| CN1300865A (en) * | 2000-11-27 | 2001-06-27 | 宝山钢铁股份有限公司 | Technology for smelting high-quality mandrel steel |
| CN101144113A (en) * | 2007-08-20 | 2008-03-19 | 马鞍山钢铁股份有限公司 | Technique for producing deep-drawing cold-rolled plate based on CSP technique |
| CN101215618A (en) * | 2007-12-27 | 2008-07-09 | 本钢板材股份有限公司 | Method for smelting ultra-low-carbon steel |
-
2010
- 2010-08-13 CN CN 201010252335 patent/CN101941021B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5286315A (en) * | 1989-03-30 | 1994-02-15 | Nippon Steel Corporation | Process for preparing rollable metal sheet from quenched solidified thin cast sheet as starting material |
| CN1071959A (en) * | 1992-09-08 | 1993-05-12 | 北京科技大学 | Produce the method for extra-deep drawing sheet steel by the texture pre-treatment |
| CN1300865A (en) * | 2000-11-27 | 2001-06-27 | 宝山钢铁股份有限公司 | Technology for smelting high-quality mandrel steel |
| CN101144113A (en) * | 2007-08-20 | 2008-03-19 | 马鞍山钢铁股份有限公司 | Technique for producing deep-drawing cold-rolled plate based on CSP technique |
| CN101215618A (en) * | 2007-12-27 | 2008-07-09 | 本钢板材股份有限公司 | Method for smelting ultra-low-carbon steel |
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| CN102181805A (en) * | 2011-04-07 | 2011-09-14 | 河北钢铁股份有限公司唐山分公司 | Steel plate and method thereof used for producing water heater linear enamel by flexible thin slab rolling line |
| CN102941227A (en) * | 2012-10-29 | 2013-02-27 | 唐山建龙实业有限公司 | Production process for middle-width hot rolling strip steel for cold rolling |
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| US10184159B2 (en) | 2013-03-07 | 2019-01-22 | Thyssenkrupp Steel Europe Ag | Method for producing a cold-rolled flat steel product for deep-drawing and ironing applications, flat steel product, and use of a flat steel product of said type |
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| CN106040786A (en) * | 2015-04-14 | 2016-10-26 | 丰田自动车株式会社 | Method for processing metal-cast article |
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| CN107971338A (en) * | 2017-11-23 | 2018-05-01 | 攀钢集团攀枝花钢铁研究院有限公司 | The high-strength chill volume cold rolling process of building concrete fixing piece |
| CN108018403A (en) * | 2017-12-19 | 2018-05-11 | 中国地质大学（武汉） | A kind of method of thin-slab caster production automobile using extra-deep drawing steel |
| CN108265227A (en) * | 2018-05-02 | 2018-07-10 | 莱芜市泰山冷轧板有限公司 | A kind of electronic component high-precision ultra-thin cold-rolled strip and its production method |
| CN108747368A (en) * | 2018-07-05 | 2018-11-06 | 泰州市申工不锈钢制品有限公司 | A kind of new process of balance block of material |
| CN111286665A (en) * | 2020-02-17 | 2020-06-16 | 本钢板材股份有限公司 | Preparation method of BG960 ultrahigh-strength steel |
| CN111850402A (en) * | 2020-07-08 | 2020-10-30 | 鞍钢股份有限公司 | Method for producing high-strength corrosion-resistant electromagnetic iron core steel plate in short process |
| CN111850402B (en) * | 2020-07-08 | 2021-12-24 | 鞍钢股份有限公司 | Method for producing high-strength corrosion-resistant electromagnetic iron core steel plate in short process |
| CN113584270A (en) * | 2021-08-09 | 2021-11-02 | 新疆八一钢铁股份有限公司 | Process for improving processability of steel for barrel industry |
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