CN102266868A - Production method for pickling steel with reduced acid - Google Patents
Production method for pickling steel with reduced acid Download PDFInfo
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- CN102266868A CN102266868A CN2011102237145A CN201110223714A CN102266868A CN 102266868 A CN102266868 A CN 102266868A CN 2011102237145 A CN2011102237145 A CN 2011102237145A CN 201110223714 A CN201110223714 A CN 201110223714A CN 102266868 A CN102266868 A CN 102266868A
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Abstract
The invention relates to a production method for pickling steel with reduced acid and belongs to the technical field of metal rolling. The technical scheme is that: a FeO eutectoid reaction curve in a scale microstructure in the hot rolling process of target steel is formed; a rolling process is controlled, optimized and adjusted according to the FeO eutectoid reaction curve in the scale microstructure in the hot rolling process of the target steel; and the scale microstructure is changed, the generation of Fe2O3 which is difficult to pickle is reduced, the pickling speed is improved in the pickling process, and acid consumption of each ton of steel is reduced to pickle steel with acid. The invention has the advantages that: the scale is well controlled in the hot rolling process, and the surface quality of a hot rolled strip coil and labor productivity are greatly improved; and the scale microstructure is changed, the generation of Fe2O3 which is difficult to pickle is reduced, the pickling speed is improved by 10 percent in the subsequent pickling process, and the acid consumption of each ton of steel is reduced by 7.5 percent. The pressure of excessive waste acid emission on the environment is greatly lightened, and the method has the advantages of energy conservation, emission reduction and great social benefit.
Description
Technical field
The present invention relates to a kind of production method that subtracts the pickling steel, belong to metal rolled technical field.
Background technology
At present, when iron and steel enterprise produces cold rolling getting the raw materials ready, reach the purpose that improves the pickled steel strip surface quality by controlling follow-up acid cleaning process, cause in the follow-up acid cleaning process with acid measure too high, environment is caused heavy load.The typical scale structure of hot-strip is by the thin Fe of outermost layer
2O
3Layer, middle Fe
3O
4The FeO layer of layer and close matrix side is formed.According to the Fe-O equilbrium phase diagram, in the time of 570-1371 ℃, FeO is in stable state; Below 570 ℃ the time, eutectoid reaction 4FeO → a-Fe+Fe takes place in FeO
3O
4In the acid cleaning process, the easiest decomposition, the Fe of being reduced of FeO
3O
4Take second place Fe
2O
3The sour reduction decomposition of the most difficult quilt.Therefore, the scale structure of control hot rolled strip makes it to generate more FeO and avoids generating Fe simultaneously
2O
3, be the important channel of reducing the spent pickling acid amount, improving pickling efficient, also be one of technical problem of needing to be resolved hurrily of this area.
Summary of the invention
The invention provides a kind of production method that subtracts the pickling steel, optimize hot rolling technology, On-line Control hot rolling iron scale microstructure realizes the purpose of the cold rolling follow-up easy pickling of steel grade of getting the raw materials ready,
This technology reaches control and generates FeO and Fe in the iron scale microstructure
3O
4The purpose of percentage composition makes pickling speed raising 10% in the follow-up acid cleaning process, reduces a ton steel acid consumption 7.5%.
Technical solution of the present invention is:
A kind of production method that subtracts the pickling steel, at first, by to FeO eutectoid reaction curve in the iron scale microstructure in the target steel grade course of hot rolling, concrete steps are as follows: 1. measure the experiment of target steel grade oxidation kinetics, estimate the oxidation rate of each steel grade, measure oxidation weight gain and time relation curve, for estimation oxide skin growing state provides basic data; 2. carry out FeO eutectoid reaction research, by the thermal simulation experiment means, the isothermal transformation behavior of the FeO layer that surface of low-carbon steel forms under research different temperatures and the isothermal time condition draws FeO eutectoid reaction curve in the iron scale microstructure; Then, according to FeO eutectoid reaction curve in the iron scale microstructure in the target steel grade course of hot rolling, rolling mill practice is optimized and revised in control; By changing the microstructure of iron scale, reduce the Fe that is difficult to pickling
2O
3Growing amount, improve pickling speed in the acid cleaning process, reduce a ton steel acid consumption, realize subtracting the pickling steel.
Said according to FeO eutectoid reaction curve in the iron scale microstructure in the target steel grade course of hot rolling, rolling mill practice is optimized and revised in control, concrete steps are as follows: 1. obtain pure molten steel by smelting, after become strand through the conticaster continuous casting, its composition weight percentage ranges is: C:0.025%-0.065%, Si :≤0.045%, Mn:0.15%-0.25%, P :≤0.025, S :≤0.01, Als:0.015%-0.025%; 2. strand is heated to 1180-1220 ℃, insulation 20-60min, the de-scaling water under high pressure is all opened then, and the de-scaling water pressure is 18-20 Mpa, removes thorough surperficial stove and gives birth to oxide skin; 3. carry out roughing through the strand after the de-scaling, the roughing start rolling temperature is 1150-1250 ℃, and the roughing finishing temperature is 1000-1070 ℃, guarantees that the secondary descaling steel water pressure is greater than 18-20Mpa; Stay-warm case is all opened after going out roughing mill, and the desired temperature of finish rolling inlet is 1030-980 ℃, and cooling water is opened the 3-4 group between frame, and the temperature fluctuation range of finish rolling outlet is 870-890 ℃, avoids hot stage to generate too much iron scale; 4. improve the finish rolling muzzle velocity, through after adding speed rolling, the maximum speed of band steel afterbody reaches 7-14m/s; 5. cool off and batch, front end cooling and even cooling dual mode are adopted in cooling, and coiling temperature is 600 ℃-650 ℃.
Adopt technology of the present invention, hot rolling strip steel scale structure is with eutectoid structure Fe
3O
4+ Fe is main, and percentage composition reaches 80-95%, and only in matrix and the local at the interface FeO existence that minute quantity is arranged of iron scale, its content is between the 5-20%.The iron scale thickness at cold rolling get the raw materials ready strip edge portion and middle part is more even, and the structure basically identical, and iron scale thickness basic controlling is in the 6-10 mu m range, and limit portion iron scale is thinner, and the iron scale average thickness drops to 8 μ m by 14 μ m.
Technical characterstic of the present invention: (1) finish rolling muzzle velocity of the present invention is compared with common process and is improved 5%-10%, iron scale thickness obviously reduces, in addition, detection by scale structure, the scale structure of limit portion, 1/4 place, center and thickness all compare evenly, this is to improve pickling speed, the main thought that obviously improve the pickling rear surface.(2) control generates more FeO and Fe
3O
4The key process technology of content is rationally to utilize TMCP technology, comprise effective combination of heating, de-scaling, roughing, finish-rolling process (rolling temperature, deflection, mill speed), laminar flow cooling, the technology of curling, but most crucial technology is controlled curling temperature exactly, so that make the band steel after curling that FeO oxidation eutectoid reaction take place, making final iron scale microstructure On-line Control is the structure of easy pickling.
Good effect of the present invention: the present invention makes that iron scale has obtained better controlled in the course of hot rolling, has improved surface quality and labor productivity that the roll coil of strip is produced in hot rolling greatly; By changing the microstructure of iron scale, reduce the Fe that is difficult to pickling simultaneously
2O
3Growing amount, pickling speed improves 10% in the follow-up acid cleaning process, reduces a ton steel acid consumption 7.5%.The present invention has alleviated the pressure that too much spent acid discharging causes environment greatly, energy-saving and emission-reduction, and social benefit is huge.
Description of drawings
Fig. 1 is the oxidation weight gain curve of embodiment of the invention SPHC;
Isothermal transformation cross-section morphology (a) 100s (b) 1000s (c) 10000s of FeO layer when Fig. 2 is 350 ℃ of the embodiment of the invention;
Isothermal transformation cross-section morphology (a) 100s (b) 1000s (c) 10000s of FeO layer when Fig. 3 is 450 ℃ of the embodiment of the invention;
Isothermal transformation cross-section morphology (a) 100s (b) 1000s (c) 10000s of FeO layer when Fig. 4 is 500 ℃ of the embodiment of the invention;
Isothermal transformation cross-section morphology (a) 100s (b) 1000s (c) 10000s of FeO layer when Fig. 5 is 550 ℃ of the embodiment of the invention;
Isothermal transformation cross-section morphology (a) 100s (b) 1000s (c) 10000s of FeO layer when Fig. 6 is 600 ℃ of the embodiment of the invention;
Isothermal transformation cross-section morphology (a) 100s (b) 1000s (c) 10000s of FeO layer when Fig. 7 is 650 ℃ of the embodiment of the invention;
Fig. 8 is the isothermal transformation curve of embodiment of the invention FeO layer.
The specific embodiment
By the following examples, the invention will be further described.
A kind of production method that subtracts the pickling steel, at first, by to FeO eutectoid reaction curve in the iron scale microstructure in the target steel grade course of hot rolling, concrete steps are as follows:
Step 1: measure the experiment of target steel grade oxidation kinetics
The purpose of carrying out oxidation kinetics experiment is to estimate the oxidation rate of each steel grade, measures oxidation weight gain and time relation curve, and for estimation oxide skin growing state provides basic data, to test steel grade be that SPHC is cold rolling gets the raw materials ready; The isothermal oxidation temperature is 500 ℃, 600 ℃, 700 ℃, 800 ℃, 900 ℃, 1000 ℃, 1100 ℃, and oxidization time is 60min;
Oxidation weight gain and time relation curve be as shown in Figure 1 in air with steel in the SPHC hot rolling.As can be seen from the figure, SPHC presents linear relation substantially in the time of 700 ℃; Present parabolic relation in time more than 700 ℃;
Oxidation rate is by the Fe between iron scale and matrix
2+And O
2-DIFFUSION CONTROLLED; When oxidation when high temperature takes place, when perhaps iron scale is thin, Fe
2+And O
2-Diffusion velocity higher.；
Therefore, more than 700 ℃ the time, oxidation rate is very fast; Along with the carrying out of oxidation, because iron scale thickens, it is parabola shaped that the oxidation curve was presented in the later stage; So follow-up rolling mill practice is avoided the too high and blocked up phenomenon of iron scale that bring of final cooling temperature as far as possible;
Step 2:FeO eutectoid reaction research
By the thermal simulation experiment means, the isothermal transformation behavior of the FeO layer that surface of low-carbon steel forms under research different temperatures and the isothermal time condition, to be that SPHC is cold rolling get the raw materials ready the experiment steel grade.In order to be consistent with on-site actual situations, inside, thermal simulation experiment storehouse is air atmosphere, and wherein isothermal temperature is 650,600,550,500,450 and 350 ℃, and isothermal time is respectively 100 s, 1000 s and 10000s.The isothermal transformation cross-section morphology of FeO layer is shown in Fig. 2 ~ 7 under each temperature;
Too big variation does not take place in iron scale substantially during 350 ℃ of isothermal 100s, and evolution reaction does not take place as yet; Separated out the Fe of a large amount of pro-eutectoids during 450 ℃ of isothermal 100s in the FeO layer
3O
4, and iron scale and matrix one deck cenotype appearred at the interface, when isothermal 10000s, the mixture of sheet has extended to iron scale and matrix at the interface, it is anti-to illustrate that eutectoid has almost all taken place the FeO layer; During 500 ℃ of isothermal 1000s, big when the degree of FeO eutectoid reaction does not have 450 ℃ just having the FeO of minute quantity residual near the matrix side; During 550 ℃ of isothermal 10000s, many when measuring obviously than 500 ℃ near the residual FeO of matrix side.During 600 ℃ of isothermals, precipitate does not appear in the iron scale, only by the Fe in the outside
3O
4Layer and inboard FeO layer are formed; During 650 ℃ of isothermal 10000s, do not produce yet and separate out, just Fe
3O
4Layer and Fe
2O
3The thickness of layer all increases significantly;
According to scale structure and eutectoid reaction situation that experiment obtains, isothermal transformation curve such as Fig. 8 of obtaining FeO layer in the iron oxide cortex illustrate; 450 ℃-550 ℃ is " nose temperature " scope of FeO layer as can be seen; In this temperature range, FeO layer rate of transition is the fastest.
Said according to FeO eutectoid reaction curve in the iron scale microstructure in the target steel grade course of hot rolling, rolling mill practice is optimized and revised in control, and concrete steps are as follows:
1, obtain purer molten steel by smelting, after become strand through the conticaster continuous casting, its composition weight percentage ranges is: C:0.025%-0.065%, Si :≤0.045%, Mn:0.15%-0.25%, P :≤0.025, S :≤0.01, Als:0.015%-0.025%;
2, strand is heated to 1180-1220 ℃, insulation 20-60min, the de-scaling water under high pressure is all opened then, and original technology is 15Mpa, and new technology de-scaling water pressure is 18-20 Mpa, guarantees to remove thorough surperficial stove and gives birth to oxide skin;
3, carry out roughing through the strand after the de-scaling, the roughing start rolling temperature is 1150-1250 ℃, and the roughing finishing temperature is 1000-1070 ℃, guarantees that the secondary descaling steel water pressure is greater than 18-20Mpa; Stay-warm case is all opened after going out roughing mill, and the desired temperature of finish rolling inlet is 1030-980 ℃, and cooling water is opened the 3-4 group between frame.The temperature fluctuation range of finish rolling outlet is 870-890 ℃, reduces 10-25 ℃ at the following in advance of guaranteed performance than original technological temperature, avoids hot stage to generate too much iron scale;
4, finish rolling muzzle velocity
According to the experimental program requirement, need improve the muzzle velocity of finish rolling F7 as far as possible.On-the-spot by manual operation, the finish rolling muzzle velocity has improved 5-15% than original technology.Through after adding speed rolling, the maximum speed of band steel afterbody reaches 7-14m/s;
5, cool off and batch
Front end cooling and even cooling dual mode are adopted in cooling, and the front end cooling purpose mainly is to reduce high-temperature residence time, reduces thickening of cooling section iron scale.Coiling temperature is 600 ℃-650 ℃, reduces 30-70 ℃ than original technology on the basis of guaranteed cost, guarantees that the band steel can slowly cool off in 450-550 ℃ of scope of FeO eutectoid reaction nose Wen Wendu after curling;
It is as follows that rolling mill practice embodiment is optimized and revised in field control more specifically:
Embodiment 1:: obtain purer molten steel by smelting, after become strand through the conticaster continuous casting, its composition percentage by weight is: C:0.045%, Si :≤0.023%, Mn:0.21%, P :≤0.015%, S :≤0.004%, Als:0.02%.
Strand is heated to 1190 ℃, insulation 30min, the de-scaling water under high pressure is all opened then, and pressure is 19Mpa; Carry out 3+3 roughing through the strand after the de-scaling, the roughing start rolling temperature is 1170 ℃, and finishing temperature is 1020 ℃, guarantees that the secondary descaling steel water pressure is not less than 18Mpa; Stay-warm case is all opened after going out roughing mill, and the desired temperature of finish rolling inlet is 990 ℃, and cooling water is opened the 3-4 group between frame.The desired temperature of finish rolling outlet is 880 ℃, thickness range 4.5-3.5mm, and finish rolling muzzle velocity and original technology improve 6%, and through after adding speed rolling, the maximum speed of band steel afterbody reaches 8.1m/s; The laminar flow type of cooling is taked even cooling, and coiling temperature is 600 ℃.The hot rolling strip steel scale structure that obtains is based on eutectoid structure Fe3O4+Fe, and its percentage composition is 87%, and all the other are FeO, belong to easy pickling tissue, and the iron scale average thickness at strip edge portion and middle part is 6.7 μ m.Pickling speed is compared with original technology and is improved 12.4% in the follow-up acid cleaning process, and ton steel acid consumption reduces by 8.2%.
Embodiment 2:: obtain purer molten steel by smelting, after become strand through the conticaster continuous casting, its composition percentage by weight is: C:0.033%, Si:0.015%, Mn:0.22%, P :≤0.0104%, S :≤0.0156%, Als:0.0189%.
Strand is heated to 1180 ℃, insulation 40min, the de-scaling water under high pressure is all opened then, and pressure is 20bar; Carry out 3+3 roughing through the strand after the de-scaling, the roughing start rolling temperature is 1170 ℃, and finishing temperature is 1010 ℃, guarantees that the secondary descaling steel water pressure is not less than 19Mpa; Stay-warm case is all opened after going out roughing mill, and the desired temperature of finish rolling inlet is 990 ℃, and cooling water is opened the 3-4 group between frame.The desired temperature of finish rolling outlet is 874 ℃, and the desired temperature of finish rolling outlet is 880 ℃, thickness range 3.5-3.01 mm, and finish rolling muzzle velocity and original technology improve 8%, and through after adding speed rolling, the maximum speed of band steel afterbody reaches 10.3m/s; The laminar flow type of cooling is taked even cooling, and coiling temperature is 617 ℃.The hot rolling strip steel scale structure that obtains is based on eutectoid structure Fe3O4+Fe, and its percentage composition is 82%, and all the other are FeO, belong to easy pickling tissue, and the iron scale average thickness at strip edge portion and middle part is 7.5 μ m.Pickling speed is compared with original technology and is improved 11.9% in the follow-up acid cleaning process, and ton steel acid consumption reduces by 8.0%.
Embodiment 3: obtain purer molten steel by smelting, after become strand through the conticaster continuous casting, its composition percentage by weight is: C:0.032%, Si :≤0.011%, Mn:0.177%, P:0.0087%, S:0.010%, Als:0.0209%.
Strand is heated to 1200 ℃, insulation 20min, the de-scaling water under high pressure is all opened then, and pressure is 20 Mpa; Carry out 3+5 roughing through the strand after the de-scaling, the roughing start rolling temperature is 1180 ℃, and finishing temperature is 1020 ℃, guarantees that the secondary descaling steel water pressure is not less than 20Mpa; Stay-warm case is all opened after going out roughing mill, and the desired temperature of finish rolling inlet is 1100 ℃, and cooling water is opened the 3-4 group between frame.The desired temperature of finish rolling outlet is 890 ℃, thickness range 3.0-2.5 mm, and finish rolling muzzle velocity and original technology improve 9%, and through after adding speed rolling, the maximum speed of band steel afterbody reaches 11.0m/s; The laminar flow type of cooling is taked even cooling, and coiling temperature is 630 ℃.The hot rolling strip steel scale structure that obtains is based on eutectoid structure Fe3O4+Fe, and its percentage composition is 86%, and all the other are FeO, belong to easy pickling tissue, and the iron scale average thickness at strip edge portion and middle part is 7.9 μ m.Pickling speed is compared with original technology and is improved 11.2% in the follow-up acid cleaning process, and ton steel acid consumption reduces by 7.8%.
Embodiment 4: obtain purer molten steel by smelting, after become strand through the conticaster continuous casting, its composition percentage by weight is: C:0.029%, Si:0.0098%, Mn:0.20%, P:0.00712%, S:0.0068%, Als:0.0343%.
Strand is heated to 1200 ℃, insulation 35min, the de-scaling water under high pressure is all opened then, and pressure is 20bar; Carry out 3+5 roughing through the strand after the de-scaling, the roughing start rolling temperature is 1175 ℃, and finishing temperature is 1050 ℃, guarantees that the secondary descaling steel water pressure is not less than 19Mpa; Stay-warm case is all opened after going out roughing mill, and the desired temperature of finish rolling inlet is 990 ℃, and cooling water is opened the 3-4 group between frame.The desired temperature of finish rolling outlet is 870 ℃, thickness range 2.5-2.01 mm, and finish rolling muzzle velocity and original technology improve 8%, and through after adding speed rolling, the maximum speed of band steel afterbody reaches 11.3m/s; The laminar flow type of cooling is taked even cooling, and coiling temperature is 630 ℃.The hot rolling strip steel scale structure that obtains is based on eutectoid structure Fe3O4+Fe, and its percentage composition is 90%, and all the other are FeO, belong to easy pickling tissue, and the iron scale average thickness at strip edge portion and middle part is 8.0 μ m.Pickling speed is compared with original technology and is improved 10% in the follow-up acid cleaning process, and ton steel acid consumption reduces by 7.4%.
Embodiment 5: obtain purer molten steel by smelting, after become strand through the conticaster continuous casting, its composition percentage by weight is: C:0.032%, Si:0.015%, Mn:0.192%, P:0.0103%, S:0.0083%, Als:0.0201%.
Strand is heated to 1200 ℃, insulation 30min, the de-scaling water under high pressure is all opened then, and pressure is 20bar; Carry out 3+5 roughing through the strand after the de-scaling, the roughing start rolling temperature is 1170 ℃, and finishing temperature is 1050 ℃, guarantees that the secondary descaling steel water pressure is not less than 19Mpa; Stay-warm case is all opened after going out roughing mill, and the desired temperature of finish rolling inlet is 1000 ℃, and cooling water is opened the 3-4 group between frame.The desired temperature of finish rolling outlet is 890 ℃, thickness range 2.0-1.2 mm, and finish rolling muzzle velocity and original technology improve 7%, and through after adding speed rolling, the maximum speed of band steel afterbody reaches 12.3m/s; The laminar flow type of cooling is taked even cooling, and coiling temperature is 645 ℃.The hot rolling strip steel scale structure that obtains is based on eutectoid structure Fe3O4+Fe, and its percentage composition is 90%, and all the other are FeO, belong to easy pickling tissue, and the iron scale average thickness at strip edge portion and middle part is 8.3 μ m.Pickling speed is compared with original technology and is improved 9.5% in the follow-up acid cleaning process, and ton steel acid consumption reduces by 7.4%.
Claims (3)
1. production method that subtracts the pickling steel, it is characterized in that at first, by to FeO eutectoid reaction curve in the iron scale microstructure in the target steel grade course of hot rolling, concrete steps are as follows: 1. measure the experiment of target steel grade oxidation kinetics, estimate the oxidation rate of each steel grade, measure oxidation weight gain and time relation curve, for estimation oxide skin growing state provides basic data; 2. carry out FeO eutectoid reaction research, by the thermal simulation experiment means, the isothermal transformation behavior of the FeO layer that surface of low-carbon steel forms under research different temperatures and the isothermal time condition draws FeO eutectoid reaction curve in the iron scale microstructure; Then, according to FeO eutectoid reaction curve in the iron scale microstructure in the target steel grade course of hot rolling, rolling mill practice is optimized and revised in control; By changing the microstructure of iron scale, reduce the Fe that is difficult to pickling
2O
3Growing amount, improve pickling speed in the acid cleaning process, reduce a ton steel acid consumption, realize subtracting the pickling steel.
2. the production method that subtract pickling steel according to claim 1, it is characterized in that said according to FeO eutectoid reaction curve in the iron scale microstructure in the target steel grade course of hot rolling, rolling mill practice is optimized and revised in control, concrete steps are as follows: 1. obtain pure molten steel by smelting, after become strand through the conticaster continuous casting, its composition weight percentage ranges is: C:0.025%-0.065%, Si :≤0.045%, Mn:0.15%-0.25%, P :≤0.025, S :≤0.01, Als:0.015%-0.025%; 2. strand is heated to 1180-1220 ℃, insulation 20-60min, the de-scaling water under high pressure is all opened then, and the de-scaling water pressure is 18-20 Mpa, removes thorough surperficial stove and gives birth to oxide skin; 3. carry out roughing through the strand after the de-scaling, the roughing start rolling temperature is 1150-1250 ℃, and the roughing finishing temperature is 1000-1070 ℃, guarantees that the secondary descaling steel water pressure is greater than 18-20Mpa; Stay-warm case is all opened after going out roughing mill, and the desired temperature of finish rolling inlet is 1030-980 ℃, and cooling water is opened the 3-4 group between frame, and the temperature fluctuation range of finish rolling outlet is 870-890 ℃, avoids hot stage to generate too much iron scale; 4. improve the finish rolling muzzle velocity, through after adding speed rolling, the maximum speed of band steel afterbody reaches 7-14m/s; 5. cool off and batch, front end cooling and even cooling dual mode are adopted in cooling, and coiling temperature is 600 ℃-650 ℃.
3. the production method that subtract pickling steel according to claim 2, it is characterized in that the finish rolling muzzle velocity is compared with common process improves 5%-10%.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102560288A (en) * | 2012-02-15 | 2012-07-11 | 河北钢铁股份有限公司邯郸分公司 | Production method of black rust steel under service conditions of punch forming with oil coating process |
| CN102586702A (en) * | 2012-02-15 | 2012-07-18 | 河北钢铁股份有限公司邯郸分公司 | Black surface steel production method with using condition of roll forming oiling-free process |
| CN102658301A (en) * | 2012-05-04 | 2012-09-12 | 武汉钢铁(集团)公司 | Control and modifying unit of scale of hot rolling strip steel |
| WO2014157203A1 (en) * | 2013-03-29 | 2014-10-02 | 株式会社神戸製鋼所 | Soft magnetic component steel material having excellent pickling properties, soft magnetic component having excellent corrosion resistance and magnetic properties, and production method therefor |
| CN107185969A (en) * | 2017-05-27 | 2017-09-22 | 内蒙古包钢钢联股份有限公司 | Medium carbon cold heading steel wire rod scale on surface component and method for controlling thickness |
| CN109097700A (en) * | 2018-09-26 | 2018-12-28 | 马鞍山钢铁股份有限公司 | A kind of easy pickling mild steel steel plate of CSP process and its manufacturing method |
| CN111575465A (en) * | 2020-05-13 | 2020-08-25 | 武汉钢铁有限公司 | Production method for preventing surface of hot-rolled pickled steel from blackening |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002070157A1 (en) * | 2001-03-03 | 2002-09-12 | Sms Demag Aktiengesellschaft | Method for removing scale from strips |
| 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 |
| CN101914725A (en) * | 2010-09-02 | 2010-12-15 | 唐山国丰钢铁有限公司 | Low-carbon ultra-deep punching cold-rolling steel sheet and production method thereof |
-
2011
- 2011-08-05 CN CN 201110223714 patent/CN102266868B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002070157A1 (en) * | 2001-03-03 | 2002-09-12 | Sms Demag Aktiengesellschaft | Method for removing scale from strips |
| 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 |
| CN101914725A (en) * | 2010-09-02 | 2010-12-15 | 唐山国丰钢铁有限公司 | Low-carbon ultra-deep punching cold-rolling steel sheet and production method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 刘伯昌等: "热轧窄带钢氧化铁皮的研究", 《上海金属》, vol. 10, no. 05, 30 September 1988 (1988-09-30) * |
| 孙彬等: "不同热连轧工艺参数条件下三次氧化铁皮的分析", 《物理测试》, vol. 28, no. 6, 30 November 2010 (2010-11-30), pages 1 - 5 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102560288A (en) * | 2012-02-15 | 2012-07-11 | 河北钢铁股份有限公司邯郸分公司 | Production method of black rust steel under service conditions of punch forming with oil coating process |
| CN102586702A (en) * | 2012-02-15 | 2012-07-18 | 河北钢铁股份有限公司邯郸分公司 | Black surface steel production method with using condition of roll forming oiling-free process |
| CN102658301A (en) * | 2012-05-04 | 2012-09-12 | 武汉钢铁(集团)公司 | Control and modifying unit of scale of hot rolling strip steel |
| WO2014157203A1 (en) * | 2013-03-29 | 2014-10-02 | 株式会社神戸製鋼所 | Soft magnetic component steel material having excellent pickling properties, soft magnetic component having excellent corrosion resistance and magnetic properties, and production method therefor |
| CN107185969A (en) * | 2017-05-27 | 2017-09-22 | 内蒙古包钢钢联股份有限公司 | Medium carbon cold heading steel wire rod scale on surface component and method for controlling thickness |
| CN107185969B (en) * | 2017-05-27 | 2019-10-29 | 内蒙古包钢钢联股份有限公司 | Medium carbon cold heading steel wire rod scale on surface component and method for controlling thickness |
| CN109097700A (en) * | 2018-09-26 | 2018-12-28 | 马鞍山钢铁股份有限公司 | A kind of easy pickling mild steel steel plate of CSP process and its manufacturing method |
| CN111575465A (en) * | 2020-05-13 | 2020-08-25 | 武汉钢铁有限公司 | Production method for preventing surface of hot-rolled pickled steel from blackening |
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