CN103921067B - A kind of low acid consumption great surface quality cold-rolled products production method - Google Patents
A kind of low acid consumption great surface quality cold-rolled products production method Download PDFInfo
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- CN103921067B CN103921067B CN201410117562.4A CN201410117562A CN103921067B CN 103921067 B CN103921067 B CN 103921067B CN 201410117562 A CN201410117562 A CN 201410117562A CN 103921067 B CN103921067 B CN 103921067B
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Abstract
The cold-rolled products production method of a kind of low acid consumption great surface quality that the present invention relates to, specifically comprises the steps: uncoiler uncoiling; Planisher carries out fragmentation, stripping to the oxide of belt steel surface; Multi-roll straightening machine is to broken, the stripping further of the oxide of belt steel surface; Brushing device removes the oxide that belt steel surface comes off and loosens; Band steel after process is carried out pickling; Surface grinding is carried out to the band steel through overpickling; Cold rolling processing is carried out to the belt steel product after above-mentioned process; Strip coiling after cold rolling mill is become finished product; By this programme, oxide crackle is many and gap large, and facilitate acid solution rapid osmotic, pickling efficiency is high; Before band steel enters acid tank, remove partial oxide, acid consumption is low; The surface quality of final products is better than the surface quality of common sour rolling mill; Band steel yield strength value added is low, and performance is substantially unaffected; Belt plate shape and tissue homogeneous degree improve, and are conducive to the plate shape precision promoting outlet cold-rolled products.
Description
Technical field
The present invention relates to cold rolling flat material processing technology field, particularly relate to a kind of cold-rolled products production method of low acid consumption great surface quality.
Background technology
In the prior art, as shown in Figure 1, traditional pickling milling train Unit erriger produces cold-rolled products, by uncoiler 1, entry loop 2, withdrawal straightening machine 3, pickling 4, outlet looping 5, tandem mill 23 and coiling machine 6 are formed, hot-strip 7 is through process of surface treatment clear board face oxide 8, cold-rolled products are produced after recycling tandem mill 23 processes, in process of production, be limited by the scale breading effect of withdrawal straightening machine 3, the product of many kinds all must pass through acid tank by reduction of speed, to increase pickling 4 time, the surface quality of steel 7 is with after ensureing pickling 4, this inevitably constrains the performance of tandem mill 23 rolling power, and, the a large amount of acid solution of pickling 4 process need consumption, calculate by average size, ton steel acid consumption is about 25kg, ambient influnence is serious, on the other hand, by roll in the operation of rolling of tandem mill 23 and the impact of being with steel 7 contact condition and emulsion, blemish after pickling 4 still cannot all be eliminated through cold rolling, affect the final surface quality of cold-rolled products.
As shown in Figure 2, tradition sour rolling mill adopts withdrawal straightening machine 3 to carry out mechanical scale breading, analyze from withdrawal straightening machine 3 Descaling, in straightening process, oxide 8 with steel 7 surface is at tension and the oxide crackle 9 formed under bending stress effect and band steel 7 width is consistent, after withdrawal straightening machine 3, band steel 7 elastic recovery, the oxide crackle 9 that band steel 7 surface has been produced closes.
For retainer belt steel 7 properties for follow, need the percentage elongation of withdrawal straightening machine 3 to be arranged on below band steel yield limit, under such conditions, after band steel 7 leaves withdrawal straightening machine 3, band steel 7 body elastic recovery, causes band steel 7 oxide on surface crackle 9 to close, therefore in pickling 4 process, acid solution is difficult to penetrate into FeO23 from closed oxide crackle 9, and reacts with it, and pickling 4 efficiency is very low.
In order to improve pickling 4 efficiency, on the yield limit needing the percentage elongation of withdrawal straightening machine 3 to be arranged on band steel 7, band steel 7 is made to produce plastic deformation, under such conditions, partly can keep the gap of oxide on surface 8 after leaving withdrawal straightening machine 3 with steel 7, promote pickling efficiency, but, this kind of mode can cause the performance loss of product serious, affects follow-up rolling.
The surface quality of cold-rolled products is limited by the surface quality of product after pickling 4, and therefore, the not good key of cold-rolled products surface quality is that product surface is direct chemical reaction surface after pickling 4.
As shown in Figure 3 and Figure 4, in the ideal situation, the oxide 8 on band steel 7 surface, the oxide 8 from top layer to nexine is respectively Fe
2o
331, Fe
3o
432
,feO33, above-mentioned three kinds of oxides 8 are different with the complexity of acid reaction, be positioned at undermost FeO23 the most easily and pickling 4 react, in this state, acid solution is with oxide 8 and be with the reaction time of steel 7 body substantially identical, and after pickling 4, band steel 7 surface quality is even; But, in actual production, part Fe
3o
432 can be deposited on band steel 7 surface, due to Fe
3o
432 is different with the reaction time of acid solution from FeO33, thus cause the uneven reaction between acid solution and band steel 7, cause band steel 7 surface after pickling 4 as shown in Figure 5, the product of this surface quality, after cold think of, above-mentioned blemish still has part to be present in band steel 7 surface, thus the lifting of restriction cold-rolled products quality.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of low acid consumption great surface quality cold-rolled products production method, in order to promote the surface quality of cold-rolled products, reduce cold rolling consumption and environmental pollution, pass through the technical program, adopt combined mechanical device to improve pickling efficiency, reduce pickling consumption; Utilize mechanical surface milled processed technique to promote to enter the surface quality of band steel before milling train, make that sour rolling mill is efficient, low consumption, and there is more outstanding surface quality,
In order to achieve the above object, technical scheme of the present invention is achieved in that a kind of cold-rolled products production method of low acid consumption great surface quality, specifically comprises the steps:
A. uncoiler uncoiling;
B. planisher carries out fragmentation, stripping to the oxide of belt steel surface;
C. multi-roll straightening machine is to broken, the stripping further of the oxide of belt steel surface;
D. the scrubbing roller in brushing device removes the oxide that belt steel surface comes off and loosens;
E. pickling is carried out by through smooth, the band steel aligned and scrub after process;
F. mechanical lapping equipment is entered into the band steel through overpickling and carry out mechanical surface grinding reparation blemish;
G. tandem mill is entered to the belt steel product after above-mentioned process and carry out cold rolling processing;
H. the band steel after tandem mill cold rolling is batched through coiling machine and become finished product.
Production method of the present invention is flattening process, multiple roll straightening process, scrub the group technology of technique, acid cleaning process, mechanical surface grinding technics and cold-rolling process, after processing uncoiler, be configured with planisher, process equipment that multi-roll straightening machine, brushing device three cover possess scale breading, de-scaling function, treated band steel enters acid tank and carries out pickling processing, then the band steel after pickling is entered into mechanical lapping equipment and carry out mechanical surface grinding reparation, finally enter tandem mill again and cold rolling is carried out to above-mentioned band steel.
In technical scheme of the present invention, comprise three mechanical type scale breadings, de-scaling functions, first planisher carries out fragmentation to the oxide of belt steel surface, then the multi-roll straightening machine utilizing planisher to export carries out repeatedly forward and reverse bending to broken oxide, further broken oxide, finally utilize brushing device to carry out oxide removing to belt steel surface, three complete equipment coordinated, remove the oxide of Surfaces of Hot Rolled Strip as much as possible.
In technical scheme of the present invention, comprise smooth scale breading, multiple roll aligning scale breading, de-scaling, rinse the grinding of eccysis squama, Pickling Descaling and mechanical surface and cold rolling mill technique, mechanical descaling efficiency is high, pickling time is short, product surface quality after low, the final cold rolling of acid consumption is better than common cold-rolled products, and surface roughness can carry out classification regulation and control.
The present invention has shortening acid reaction time function, band steel is after planisher scale breading, multi-roll straightening machine secondary scale breading, brushing device de-scaling, permanent, large scale oxide crackle is defined at belt steel surface, now enter descaling bath again and carry out chemical de-scaling, because belt steel surface possesses large scale oxide crackle, acid solution can rapid osmotic be reacted to FeO layer, and the pickling time of straight carbon steel is shortened to 10-12s by the 16-22s of routine; Dual phase steel pickling time in high-strength steel is shortened to 20-25s by 35-45s.
The present invention has the function reducing acid consumption, and described band steel, after planisher scale breading, multi-roll straightening machine secondary scale breading, brushing device de-scaling, removes belt steel surface partial oxide, decreases chemical reaction amount, reduces acid consumption.
In technical scheme of the present invention, produce the process that strip surface quality is better than conventional cold-rolled products, mechanical lapping equipment is entered to the belt steel product through overpickling and carries out mechanical surface milled processed, after one-level, two-stage, the multistage mechanical type surface grinding process of more than three grades or three grades, the band steel of different surface roughness can be obtained, entered by above-mentioned band steel after tandem mill carries out cold rolling, surface quality is better than common cold-rolled products.
In technical scheme of the present invention, comprise the breaking elongation controlling functions of scale breading process, while belt steel surface oxide removed by planisher, controlled the breaking elongation of planisher and multi-roll straightening machine by planisher roll-force dynamic adjustment function, and then ensure the performance of institute's rapidoprint.
The present invention has under the prerequisite of not influence zone Steel Properties, broken, to remove belt steel surface oxide function, the combination of planisher, multi-roll straightening machine and brushing device, can when being with steel percentage elongation to be 0.8%-1.5%, permanent, large-sized oxide crackle is formed at belt steel surface, complete chemical surface treatment fast, stopped common hot-rolled product and produced luders band defect; Avoid the high-strength steel in carbon steel, IF Steel Properties worsens.
The present invention possesses the ability of the cold-rolled products producing plate shape excellence, be with steel tentatively to improve after plate shape through planisher and enter multi-roll straightening machine, and the registration of smoothing roll up and down of multi-roll straightening machine is adjusted according to belt steel thickness and material, further plate shape and the thickness and precision improving cold rolling feeds, thus produce the higher cold-rolled products of ejecting plate shape precision.
Beneficial effect after employing technique scheme is: a kind of cold-rolled products production method of low acid consumption great surface quality, by the technical program compared with prior art, the rear belt steel surface oxide crackle of 1 processing is many and gap large, facilitates acid solution rapid osmotic, therefore, pickling efficiency is high; Before 2 band steel enter acid tank, remove partial oxide, acid consumption is low; The surface quality of 3 final products is better than the surface quality of common sour rolling mill; After 4 processing, band steel yield strength value added is low, and strip property is substantially unaffected; 5 band steel are after the smooth processing of entrance, and plate shape and tissue homogeneous degree improve, and are conducive to the plate shape precision promoting outlet cold-rolled products.
Accompanying drawing explanation
Fig. 1 is the structural representation of conventional sour rolling mill in prior art.
Fig. 2 is the view of hot-strip straightening front and rear surfaces oxide iron sheet in prior art.
Fig. 3 is the desirable oxide structure figure of belt steel surface.
Fig. 4 is the oxide structure figure of belt steel surface reality.
Fig. 5 is the strip surface quality figure after prior art pickling.
Fig. 6 is process equipment layout drawing of the present invention.
Fig. 7 is flattening process in the present invention, aligning scale breading technique and scrub the equipment structure chart of technique.
Fig. 8 is that in the present invention, planisher percentage elongation is belt steel surface oxide crackle state picture under 0.8%-1.5% state.
The powerful lapping device structural representation in surface in Fig. 9 the present invention.
In figure, 1 uncoiler, 2 entry loops, 3 withdrawal straightening machines, 4 pickling, 5 outlet loopings, 6 coiling machines, 7 band steel, 8 oxides, 9 oxide crackles, 10 luders bands, 11 planishers, 12 multi-roll straightening machines, 13 working rolls, 14 smoothing rolls, 15 brushing devices, 16 scrubbing rollers, 17 mechanical lapping equipments, 18 backing rolls, 19 mixing rolls, 23 tandem mills, 30 rinsings, 31Fe
2o
3, 32Fe
3o
4, 33FeO.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment in the present invention is described in further detail.
As shown in Figure 6 and Figure 7, the cold-rolled products production method of a kind of low acid consumption great surface quality that the present invention relates to, specifically comprises the steps:
A. uncoiler 1 uncoiling;
B. the oxide 8 of planisher 11 to band steel 7 surface carries out fragmentation, stripping;
C. multi-roll straightening machine 12 is to broken, the stripping further of the oxide 8 on band steel 7 surface;
D. the scrubbing roller 16 in brushing device 15 removes the oxide 8 that band steel 7 surface comes off and loosens;
E. pickling 4 is carried out by through smooth, the band steel 7 aligned and scrub after process;
F. mechanical lapping equipment 17 is entered into the band steel 7 through overpickling 4 and carry out mechanical surface grinding, repair blemish;
G. cold rolling processing is carried out to the band steel 7 product introduction tandem mill 23 after above-mentioned process;
H. the band steel 7 after tandem mill 23 rolling is batched through coiling machine 6 and become finished product.
Production method of the present invention is flattening process, multiple roll straightening process, scrub the group technology of technique, acid cleaning process and mechanical surface grinding technics and cold-rolling process, after processing uncoiler 1, be configured with planisher 11, process equipment that multi-roll straightening machine 12, brushing device 15 3 cover possess scale breading, de-scaling function, treated band steel 7 enters acid tank to carry out pickling 4 and processes, then the band steel 7 after pickling 4 is entered into mechanical lapping equipment 17 and carry out mechanical surface grinding reparation, finally enter tandem mill 23 again and cold rolling is carried out to above-mentioned band steel 7.
In technical scheme of the present invention, comprise three mechanical type scale breadings, de-scaling functions, first fragmentation is carried out by the oxide 8 of planisher 11 to band steel 7 surface, then the multi-roll straightening machine 12 utilizing planisher 11 to export carries out repeatedly forward and reverse bending to broken oxide 8, further broken oxide 8, finally utilize brushing device 15 to carry out oxide 8 to band steel 7 surface to remove, three complete equipment coordinated, remove the oxide 8 on hot-strip 7 surface as much as possible.
In technical scheme of the present invention, comprise smooth scale breading, multiple roll aligning scale breading, de-scaling, rinse the grinding of eccysis squama, Pickling Descaling and mechanical surface and cold rolling technique, mechanical descaling efficiency is high, pickling time is short, product surface quality after low, the final cold rolling of acid consumption is better than common acid-washed product, and surface roughness can carry out classification regulation and control.
The present invention has shortening acid reaction time function, described band steel 7 is after planisher 11 scale breadings, multi-roll straightening machine 12 2 scale breadings, brushing device 15 de-scaling, permanent, large scale oxide crackle 9 is defined on band steel 7 surface, now enter pickling 4 again and carry out chemical de-scaling, because band steel 7 surface possesses large-sized oxide crackle 9, acid solution can rapid osmotic be reacted to FeO33, and pickling 4 time of straight carbon steel is shortened to 10-12s by the 16-22s of routine; Dual phase steel pickling 4 time in high-strength steel is shortened to 20-25s by 35-45s.
The present invention has the function reducing acid consumption, and described band steel 7, after planisher 11 scale breadings, multi-roll straightening machine 12 2 scale breadings, brushing device 15 de-scaling, removes band steel 7 surface portion oxide 8, decreases chemical reaction amount, reduce acid consumption.
In technical scheme of the present invention, produce the process that band steel 7 surface quality is better than conventional acid-washed product, mechanical surface milled processed is carried out to the band steel 7 product introduction mechanical lapping equipment 17 through overpickling 4, after one-level, two-stage, the multistage mechanical type surface grinding process of more than three grades or three grades, the band steel 7 of different surface roughness can be obtained, entered by above-mentioned band steel 7 after tandem mill 23 carries out cold rolling, surface quality is better than common cold-rolled products.
In technical scheme of the present invention, comprise the breaking elongation controlling functions of scale breading process, while band steel 7 oxide on surface 8 removed by planisher 11, controlled the breaking elongation of planisher 11 and multi-roll straightening machine 12 by planisher 11 roll-force dynamic adjustment function, and then ensure the performance of institute's rapidoprint.
As shown in Figure 8, the present invention has under the prerequisite of not influence zone steel 7 performance, broken, to remove band steel 7 oxide on surface 8 function, the combination of planisher 11, multi-roll straightening machine 12 and brushing device 15, can when being with steel 7 percentage elongation to be 0.8%-1.5%, form permanent, large-sized oxide crackle 9 on band steel 7 surface, complete chemical surface treatment fast, stopped common hot-strip 7 surface and produced luders band 10 defect; Avoid the penalty of the high-strength steel in carbon steel, IF steel.
The present invention possesses the ability of the cold-rolled products producing plate shape excellence, be with steel 7 tentatively to improve after plate shape through planisher 11 and enter multi-roll straightening machine 12, and smoothing roll up and down 14 registration of multi-roll straightening machine 12 is adjusted according to band steel 7 thickness and material, further plate shape and the thickness and precision improving cold rolling feeds, thus produce the higher cold-rolled products of ejecting plate shape precision.
At work, the band steel 7 on uncoiler 1 is connected with the band steel 7 on entry loop 2 through welding, and first band steel 7 enters into planisher 11, owing to being with the Fe on steel 7 surface in the present invention
2o
331, Fe
3o
432 organize poor ductility, add man-hour carrying out planisher 11, band steel 7 body tissue extending very capable is attempted to extend forward under roll-force effect, this trend is subject to the restriction of the oxide on surface 8 of poor ductility, therefore between oxide on surface 8 and band steel 7 body tissue, horizontal tangential power is produced, help oxide on surface 8 from band steel 7 sur-face peeling, simultaneously, working roll 13 in planisher 11 compressive zone steel 7 under the effect of roll-force, will oxide 8 pressure break on band steel 7 surface, form many fine and closely woven and crackles 9 that direction is random.
After the band steel 7 having an above-mentioned fine and closely woven oxide crackle 9 when surface leaves planisher 11, enter into multi-roll straightening machine 12 and carry out secondary scale breading, smoothing roll 14 in multi-roll straightening machine 12 makes band steel 7 produce repeatedly forward and reverse bending, each Forging Process with steel 7 makes band steel 7 surface be flattened oxide 8 fragmentation further of machine 11 pressure break, oxide crackle 9 on band steel 7 oxide on surface 8 is increased further, the oxide 8 simultaneously making part be separated with band steel 7 body tissue in planisher 11 directly comes off, oxide 8 structure on band steel 7 surface forms permanent oxide crackle 9, this oxide crackle 9 is still retained in band steel 7 surface after band steel 7 elastic recovery, after band steel 7 enters pickling 4, acid solution can rapid osmotic be reacted to FeO layer.
After planisher 11 and the straight machine 12 of multiple roll sedan-chair, the scrubbing roller 16 of brushing device 15 is entered into steel 7, under the rotation of scrubbing roller 16, wire bristle on scrubbing roller 16 constantly scrubs band steel 7 surface, and extend in the crack of oxide 8, will to be separated with band steel 7 body but still unpeeled oxide 8 is removed further.
Through smooth, multiple roll is aligned, band steel after scrubbing enters acid tank and carries out chemical surface treatment, owing to being with the oxide crackle 9 that on the oxide 8 on steel 7 surface, quantity of formation is numerous, and, oxide crackle 9 gap is larger, acid solution can rapid osmotic react to FeO33, due in the present invention, band steel 7 after smooth has carried out multiple roll aligning and has scrubbed processing, remove the oxide 8 on part band steel 7 surface, decrease the reacting dose of pickling 4, reaction time and acid solution consumption, experimental data shows: after the combination production method process in the present invention, pickling 4 efficiency can be made to improve 30%-50%, acid solution consumption reduces 30%-40%, the speed of pickling 4 process section is promoted to 400m/min by original 270m/min.
As previously mentioned, because the oxide 8 on band steel 7 surface before pickling 4 also exists Fe
3o
4the deposition of 32, therefore, band steel 7 surface after overpickling 4 still also exists color and luster inequality and tiny flaw, these surface quality defects are that restriction is with a key technology difficult problem of hot Dai Leng, the present invention adopts two-step process for treating surface, is jointly promoted the surface quality of acid-washed product by powerful surface grinding and Surface uniformization process.
As shown in Figure 9, in the present invention, mechanical lapping equipment 17 is powerful grinding, band steel 7 out enters afterwards after one-level rinsing 30 groove removes part surface acid solution and enters mechanical lapping equipment 17 from acid tank, mechanical lapping equipment 17 adopts the mixing roll 19 with AlO abrasive material to carry out surface treatment to band steel 7, and the granularity of the subsidiary abrasive material of mixing roll 19 determines the roughness of belt steel surface.
Mechanical lapping equipment 17 in the present invention is when cleaning tape steel 7 upper surface, first mixing roll 19 is configured in top, below is backing roll 18, second top is backing roll 18, below is mixing roll 19, two backing rolls 18 and two mixing rolls 19 are one group, can according to the requirement of finished strip 7 surface quality, configure mixing roll 19 and the backing roll 18 of more than one group, described mixing roll 19 is being with the surperficial High Rotation Speed of steel 7 with the speed of 1000m/min-3000m/min, mixing roll 19 rub and abrasive lapping acting in conjunction under, remove tiny flaw and the aberration on band steel 7 surface.
Band steel 7 product carried out after mechanical surface grinding directly can carry out cold rolling processing, because the surface quality of cold rolling strip steel at entry 7 is excellent, significantly improves the surface quality of cold-rolled products after rolling.
In embodiments of the invention, the structure of described planisher 11, multi-roll straightening machine 12 and brushing device 15 is prior art, repeats no longer in detail to repeat in this its structure.
The above, be only better possible embodiments of the present invention, and be not used to limit protection scope of the present invention.
Claims (10)
1. a cold-rolled products production method for low acid consumption great surface quality, is characterized in that, specifically comprise the steps:
A. uncoiler uncoiling;
B. planisher carries out fragmentation, stripping to the oxide of belt steel surface;
C. multi-roll straightening machine is to broken, the stripping further of the oxide of belt steel surface;
D. the scrubbing roller in brushing device removes the oxide that belt steel surface comes off and loosens;
E. pickling is carried out by through smooth, the band steel aligned and scrub after process;
F. mechanical lapping equipment is entered into the band steel through overpickling and carry out mechanical surface grinding reparation blemish;
G. tandem mill is entered to the belt steel product after above-mentioned process and carry out cold rolling processing;
H. the band steel after tandem mill cold rolling is batched through coiling machine and become finished product.
2. the cold-rolled products production method of a kind of low acid consumption great surface quality according to claim 1, it is characterized in that, this production method is flattening process, multiple roll straightening process, scrub technique, acid cleaning process, the group technology of mechanical surface grinding technics and cold-rolling process, planisher is configured with after processing uncoiler, multi-roll straightening machine, brushing device three cover possesses scale breading, the process equipment of de-scaling function, treated band steel enters acid tank and carries out pickling processing, then the band steel after pickling is entered into mechanical lapping equipment and carry out mechanical surface grinding reparation, finally entering tandem mill again carries out cold rolling to above-mentioned band steel.
3. the cold-rolled products production method of a kind of low acid consumption great surface quality according to claim 2, it is characterized in that, comprise three mechanical type scale breadings, de-scaling functions, first planisher carries out fragmentation to the oxide of belt steel surface, then the multi-roll straightening machine utilizing planisher to export carries out repeatedly forward and reverse bending to broken oxide, further broken oxide, brushing device is finally utilized to carry out oxide removing to belt steel surface, three complete equipment coordinated, remove the oxide of Surfaces of Hot Rolled Strip as much as possible.
4. the cold-rolled products production method of a kind of low acid consumption great surface quality according to claim 2, it is characterized in that, comprise smooth scale breading, multiple roll aligning scale breading, de-scaling, rinse the grinding of eccysis squama, Pickling Descaling and mechanical surface and cold rolling technique, mechanical descaling efficiency is high, pickling time is short, product surface quality after low, the final cold rolling of acid consumption is better than common cold-rolled products, and surface roughness can carry out classification regulation and control.
5. the cold-rolled products production method of a kind of low acid consumption great surface quality according to claim 3, it is characterized in that, have and shorten acid reaction time function, band steel is after planisher scale breading, multi-roll straightening machine secondary scale breading, brushing device de-scaling, permanent, large scale oxide crackle is defined at belt steel surface, now enter descaling bath again and carry out chemical de-scaling, because belt steel surface possesses large scale oxide crackle, acid solution can rapid osmotic be reacted to FeO, and the pickling time of straight carbon steel is shortened to 10-12s by the 16-22s of routine; Dual phase steel pickling time in high-strength steel is shortened to 20-25s by 35-45s.
6. the cold-rolled products production method of a kind of low acid consumption great surface quality according to claim 3, it is characterized in that, there is the function reducing acid consumption, described band steel is after planisher scale breading, multi-roll straightening machine secondary scale breading, brushing device de-scaling, remove belt steel surface partial oxide, decrease chemical reaction amount, reduce acid consumption.
7. the cold-rolled products production method of a kind of low acid consumption great surface quality according to claim 4, it is characterized in that, produce the process that strip surface quality is better than conventional cold-rolled products, mechanical lapping equipment is entered to the belt steel product through overpickling and carries out mechanical surface milled processed, after one-level, two-stage, the multistage mechanical type surface grinding process of more than three grades or three grades, the band steel of different surface roughness can be obtained, entered by above-mentioned band steel after tandem mill carries out cold rolling, surface quality is better than common cold-rolled products.
8. the cold-rolled products production method of a kind of low acid consumption great surface quality according to claim 3, it is characterized in that, comprise the breaking elongation controlling functions of scale breading process, while belt steel surface oxide removed by planisher, controlled the breaking elongation of planisher and multi-roll straightening machine by planisher roll-force dynamic adjustment function, and then ensure the performance of institute's rapidoprint.
9. the cold-rolled products production method of a kind of low acid consumption great surface quality according to claim 3, it is characterized in that, have under the prerequisite of not influence zone Steel Properties, broken, to remove belt steel surface oxide function, the combination of planisher, multi-roll straightening machine and brushing device, when being with steel percentage elongation to be 0.8%-1.5%, can form permanent, large-sized oxide crackle at belt steel surface, complete chemical surface treatment fast, stopped common hot-rolled product and produced luders band defect; Avoid the high-strength steel in carbon steel, IF Steel Properties worsens.
10. the cold-rolled products production method of a kind of low acid consumption great surface quality according to claim 3, it is characterized in that, possesses the ability of the cold-rolled products producing plate shape excellence, be with steel tentatively to improve after plate shape through planisher and enter multi-roll straightening machine, and the registration of smoothing roll up and down of multi-roll straightening machine is adjusted according to belt steel thickness and material, further plate shape and the thickness and precision improving cold rolling feeds, thus produce the higher cold-rolled products of ejecting plate shape precision.
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| CN114264786B (en) * | 2021-11-29 | 2024-01-12 | 马鞍山钢铁股份有限公司 | Casting blank quality evaluation method and system based on continuous casting tundish immersion nozzle falling-off nodulation |
| CN114965935A (en) * | 2022-05-17 | 2022-08-30 | 马鞍山钢铁股份有限公司 | Strip steel quality judgment method and system based on customer requirements |
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