CN103920727B - A kind of low consumption anti-corrosion great surface quality hot rolling acid-cleaning product processes - Google Patents
A kind of low consumption anti-corrosion great surface quality hot rolling acid-cleaning product processes Download PDFInfo
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Abstract
A kind of low consumption anti-corrosion great surface quality hot rolling acid-cleaning product processes that the present invention relates to, specifically comprises the steps: uncoiler uncoiling; Planisher carries out fragmentation to the oxide of belt steel surface; Multi-roll straightening machine carries out further fragmentation, stripping to oxide; Brushing device removes partial oxide; Treated band steel is carried out pickling, rinsing; Mechanical system is adopted to repair steel strip surface defect; Adopt mechanical system to remove belt steel surface and remain thing; Coiling machine batches.By this programme, facilitate acid solution rapid osmotic, promote pickling efficiency; Remove partial oxide, reduce pickling reacting dose, reduce acid consumption; After processing, band steel yield strength value added is low, and strip property is substantially unaffected; Stop the luders band often formed at common hot rolling product surface; By mechanical surface milled processed, product surface quality is excellent; Utilize mechanical surface residue to clear up, improve the corrosion resistance of product.
Description
Technical field
The invention belongs to common hot rolled flat material deep process technology field, particularly relate to a kind of low consumption anti-corrosion great surface quality hot rolling acid-cleaning product processes.
Background technology
As shown in Figure 1, traditional pickling unit is made up of uncoiler 1, entry loop 2, withdrawal straightening machine 3, pickling 4, rinsing 30, outlet looping 5 and coiling machine 6, withdrawal straightening machine 3 is adopted to carry out the broken phosphorus of machinery, restrict by broken phosphorus effect, unit pickling time is long, efficiency is low, after pickling 4, product surface is chemical reaction surface, there is aberration and various surface quality defect.
As shown in Figure 2, cause pickling 4 efficiency low, acid consumption high main cause be withdrawal straightening machine 3 broken phosphorus principle and keep properties of product require between there is contradiction, in withdrawal straightening machine 3 course of work, oxide 8 with steel 7 surface is at tension and the oxide crackle 9 formed under bending stress effect and strip width direction 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 performance, need the percentage elongation of withdrawal straightening machine 3 to be arranged on band steel yield limit, make band steel 7 produce plastic deformation, under such conditions, after band steel 7 leaves withdrawal straightening machine 3, partly can keep the gap of oxide on surface 8, promote pickling efficiency, but the performance loss of product is serious, for the conventional hot rolled plate of the interstitial atom such as carbon, nitrogen content >=30ppm, uneven surface surrender can be produced at belt steel surface after straightening, be commonly called as luders band 10; For high-strength steel, IF steel, although luders band 10 can not be produced at belt steel surface, due to the unidirectional increase along with the increase of percentage elongation of its yield strength, therefore, strengthen percentage elongation and can worsen properties of product undoubtedly.
As shown in Figure 4 and Figure 5, after carrying out pickling 4, the main cause of product surface quality difference is the final surface of product is direct chemical reaction surface, and 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, FeO 33, above-mentioned three kinds of oxides 8 are different with the complexity of acid reaction, be positioned at undermost FeO33 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 quality after pickling 4 can not meet the instructions for use of most product.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of low consumption anti-corrosion great surface quality hot rolling acid-cleaning product processes, pass through the technical program, comprise smooth, multiple roll aligning and the combined type dephosphorization of scrubbing, efficient pickling, surface reconditioning three techniques, surface treatment is carried out to band steel, combined type dephosphorization process, adopt smooth aligning to scrub combination and carry out brokenly phosphorus, dephosphorization, make the belt steel surface oxide quantity of formation after processing many, and be permanent oxide crackle, promote pickling efficiency, reduce pickling consumption, luders band defect can be avoided when processing common hot-rolled product, at processing high-strength steel, during IF product made from steel, make performance losses minimum, efficient acid cleaning process adopts the quick pickling of short acid tank, significantly reduces acid consumption, adopts mechanical surface grinding technics and mechanical surface residue cleaning technology, eliminates aberration and the tiny flaw of belt steel surface after pickling, promotes the product surface quality after pickling, removing belt steel surface remains, and improves product corrosion resistance.
In order to achieve the above object, technical scheme of the present invention is achieved in that a kind of low consumption anti-corrosion great surface quality hot rolling acid-cleaning product processes, 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, rinsing 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 milled processed, repair steel strip surface defect;
G. mechanical plate face residue removal device is entered into the band steel ground through mechanical surface and carry out the cleaning of mechanical surface residue;
H. the band steel after process is batched through coiling machine and become finished product.
Production method in technical scheme of the present invention is flattening process, multiple roll straightening process, scrub technique, acid cleaning process, the group technology of mechanical surface grinding technics and mechanical surface residue cleaning technology, planisher is configured with after processing uncoiler, multi-roll straightening machine, brushing device three cover possesses broken phosphorus, the process equipment of phosphorus removal functional, 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, finally more mechanical plate face residue removal device is entered into the band steel after mechanical surface grinding and carry out the cleaning of mechanical surface residue.
In technical scheme of the present invention, comprise three mechanical types and break phosphorus, phosphorus removal functional, 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 broken phosphorus, multiple roll aligning broken phosphorus, dephosphorization, rinse eccysis phosphorus, pickling dephosphorization, mechanical surface grinding, mechanical surface residue cleaning technology, machinery dephosphorization efficiency is high, pickling time is short, acid consumption is low, strip surface quality good, final products surperficial acid solution residual quantity is low, and corrosion resistance is good.
The present invention has shortening acid reaction time function, through planisher, once broken phosphorus, multi-roll straightening machine secondary define permanent, large scale oxide crackle at belt steel surface after breaking phosphorus, brushing device dephosphorization to described band steel, now enter pickling again and carry out chemical dephosphorization, 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.
The present invention has the function reducing acid consumption, and described band steel after once broken phosphorus, multi-roll straightening machine secondary break phosphorus, brushing device dephosphorization through planisher, removes belt steel surface partial oxide, decreases chemical reaction amount, reduce acid consumption.
In technical scheme of the present invention, the product surface quality produced is high, acid solution residual quantity is low, corrosion resistance is good, mechanical surface grinding is carried out to the carbon steel product introduction mechanical lapping equipment through overpickling, to improve the surface quality of acid-washed product, mechanical plate face residue removal device is entered into the band steel after mechanical surface milled processed and carries out the cleaning of mechanical surface residue, to remove the residue at belt steel surface convex-concave place.
In technical scheme of the present invention, comprise brokenly the breaking elongation controlling functions of phosphorus 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, remove the function of belt steel surface oxide, 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; High-strength steel, IF Steel Properties is avoided to worsen.
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 hot rolling acid-cleaning product of ejecting plate shape precision.
The beneficial effect after technique scheme is adopted to be: a kind of low consumption is anti-corrosion great surface quality hot rolling acid-cleaning product processes, by the technical program, the crackle after 1 processing on belt steel surface iron scale is many and gap large, facilitates acid solution rapid osmotic, therefore, pickling efficiency can significantly be promoted; 2 while broken phosphorus, removes partial oxide, reduces pickling reacting dose, reduces acid consumption; After 3 processing, band steel yield strength value added is low, and strip property is substantially unaffected; 4 eliminate the yield point elongation of band steel by the processing of planisher, have stopped the luders band often formed at common hot rolling product surface; 5 by mechanical surface milled processed, and product surface quality is excellent; Utilize mechanical surface residue to clear up, improve the corrosion resistance of product.
Accompanying drawing explanation
Fig. 1 is that phosphorus schematic diagram is broken in the straightening that in prior art, conventional pickling unit adopts.
Fig. 2 is the view of hot-strip straightening front and rear surfaces oxide iron sheet in prior art.
Fig. 3 is the luders band sample picture that in prior art, common hot rolled plate surface often produces after straightening.
Fig. 4 is the desirable oxide structure picture of belt steel surface.
Fig. 5 is the oxide structure picture of belt steel surface reality.
Fig. 6 is the strip surface quality picture after prior art pickling.
Fig. 7 is process equipment layout drawing of the present invention.
Fig. 8 is flattening process in the present invention, aligns the equipment structure chart breaking phosphorus technique and scrub technique.
Fig. 9 is that in the present invention, planisher percentage elongation is belt steel surface oxide crackle state picture under 0.8%-1.5% state.
Mechanical lapping equipment structural representation in Figure 10 the present invention.
Mechanical plate face residue removal apparatus structure schematic diagram in Figure 11 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, 20 mechanical plate face residue removal devices, 21 brush roll, 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 7 and Figure 8, a kind of low consumption anti-corrosion great surface quality hot rolling acid-cleaning product processes 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, rinsing 30 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 milled processed, repair steel strip surface defect;
G. mechanical plate face residue removal device 20 is entered into the band steel ground through mechanical surface and carry out the cleaning of mechanical surface residue;
H. the band steel 7 after process is batched through coiling machine 6 and become finished product.
Production method in technical scheme of the present invention is flattening process, multiple roll straightening process, scrub technique, acid cleaning process, the group technology of mechanical surface grinding technics and mechanical surface residue cleaning technology, planisher 11 is configured with after processing uncoiler 1, multi-roll straightening machine 12, brushing device 15 3 cover possesses broken phosphorus, the process equipment of phosphorus removal functional, 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, finally more mechanical plate face residue removal device 20 is entered into the band steel 7 after mechanical surface grinding and carry out the cleaning of mechanical surface residue.
In technical scheme of the present invention, comprise three mechanical types and break phosphorus, phosphorus removal functional, first the oxide 8 of planisher 11 to band steel 7 surface carries out fragmentation, 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 broken phosphorus, multiple roll aligning broken phosphorus, dephosphorization, rinse eccysis phosphorus, pickling dephosphorization, mechanical surface grinding, mechanical surface residue cleaning technology, machinery dephosphorization efficiency is high, pickling time is short, acid consumption is low, band steel 7 surface quality is good, final products surperficial acid solution residual quantity is low, and corrosion resistance is good.
The present invention has shortening acid reaction time function, described band steel 7 defines permanent, large scale oxide crackle 9 on band steel 7 surface after planisher 11 once broken phosphorus, multi-roll straightening machine 12 2 broken phosphorus, brushing device 15 dephosphorization, now enter pickling 4 again and carry out chemical dephosphorization, because band steel 7 surface possesses large scale oxide crackle 9, acid solution can rapid osmotic be reacted to FeO33, 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 7, after planisher 11 once broken phosphorus, multi-roll straightening machine 12 2 broken phosphorus, brushing device 15 dephosphorization, removes band steel 7 surface portion oxide 8, decreases chemical reaction amount, reduce acid consumption.
In technical scheme of the present invention, the product surface quality produced is high, acid solution residual quantity is low, corrosion resistance is good, mechanical surface grinding is carried out to the carbon steel product introduction mechanical lapping equipment 17 through overpickling 4, to improve the surface quality of pickling 4 product, mechanical plate face residue removal device 20 is entered into the band steel 7 after mechanical surface milled processed and carries out the cleaning of mechanical surface residue, to remove the residue at band steel 7 surface relief place.
In technical scheme of the present invention, comprise brokenly the breaking elongation controlling functions of phosphorus 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 9, the present invention has under the prerequisite of not influence zone Steel Properties, remove the function of belt steel surface oxide, planisher 11, multi-roll straightening machine 12 can when being with steel 7 percentage elongation to be 0.8%-1.5% with the combination of brushing device 15, permanent, large-sized oxide crackle 9 is formed on band steel 7 surface, complete chemical surface treatment fast, stopped common hot-rolled product and produced luders band 10 defect; High-strength steel, IF Steel Properties is avoided to worsen.
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 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 belt steel thickness and material, further plate shape and the thickness and precision improving cold rolling feeds, thus produce the higher hot rolling acid-cleaning product 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, oxide on surface 8 is helped to peel off from belt steel surface, 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 to carry out secondary and break phosphorus, 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 FeO33.
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.
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 planisher 11 enters multi-roll straightening machine 11 and brushing device 15 is processed, 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 combined treatment process process in the present invention, pickling efficiency can be made to improve 30%-50%, acid solution consumption reduces 30%-40%.
The present invention manufactures oxide crackle 9 by mechanical combination mode on the oxide 8 on band steel 7 surface, and formed oxide crackle 9 number and oxide crackle 9 size with band steel 7 plastic deformation amount have nothing to do, and the increase of yield strength with steel 7 is relevant with the percentage elongation of band steel 7, when being with the necessary deflection of steel 7 less in processing, the performance compromise of band steel 7 being processed to rear product is fewer, therefore, technical scheme of the present invention is compared with straightening technique of the prior art, can under the prerequisite not damaging band steel 7 performance, the oxide 8 on band steel 7 surface manufactures oxide crackle 9, to improve pickling 4 efficiency.
Technical scheme of the present invention is applied at common hot rolling product scope, due to common hot-rolled product organize interstitial atoms carbon, the content of nitrogen is greater than 30ppm, therefore, in processing and follow-up use procedure, very easily forms luders band 10 defect on band steel 7 surface; And planisher 11 in the present invention can the yield point elongation of cancellation band steel 7, thus effectively stop the generation of luders band 10 defect of the common hot-rolled product being difficult in prior art avoid.
Technical scheme of the present invention is high-strength steel at carbon steel, IF product made from steel field is applied, due to high-strength steel, IF steel is in whole processing interval, yield strength all unidirectional increases with the increase of process deflection of product, in order to not damage the performance of material own, strictly percentage elongation must be limited during production, cause pickling 4 efficiency extremely low, for the dual phase steel in high-strength steel, the pickling time of general pickling 4 needs between 35s-45s, therefore, how under deflection prerequisite little as far as possible, the operating efficiency promoting the pickling 4 of the said goods is a large technical barrier of this series products, the present invention can under the condition do not occurred or only produce very little plastic deformation, improve pickling 4 efficiency, the pickling time of pickling 4 is shortened 10-20s, substantially increase operating efficiency, and solve high-strength steel in carbon steel, the a great problem that IF steel is produced.
Because before pickling 4, the oxide 8 on band steel 7 surface also exists Fe
3o
43the deposition of 2, therefore, band steel 7 surface after overpickling 4 still also exists the uneven and tiny flaw of color and luster as shown in Figure 6, 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, by mechanical lapping equipment 17, carries out mechanical surface grinding on band steel 7 surface, to reach Surface uniformization process, the common surface quality promoting pickling 4 product.
As shown in Figure 10, in the present invention, mechanical lapping equipment 17 is mechanical surface grinding, band steel 7 out enters afterwards after part surface acid solution removed by one-level potcher 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 on band steel 7 surface.
In the present invention, mechanical lapping equipment 17 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.
As shown in figure 11, tradition pickling unit, adopt high-temperature rinsing 30 technique, the residual acid in plate face is reduced by increasing molecular kinetic energy, but effect is unsatisfactory in actual applications, the present invention adopts mechanical surface residue cleaning technology, plate face after pickling is remained and is reduced to less than 20% of traditional acid cleaning process, band steel 7 is through two, mechanical surface residue cleaning technology is entered after three grades of rinsing 21 grooves, during cleaning tape steel 7 upper surface, first brush roll 21 is configured in top, below is backing roll 18, second top is backing roll 18, below is brush roll 21, two backing rolls 18 and two brush roll 21 are one group, complete the mechanical surface residue cleaning of a upper and lower surface, bristle in described brush roll 21 is very thin, the head of very thin bristle during process in brush roll 21 can stretch into the pit on band steel 7 surface, residual acid in pit and other impurity are brushed out, simultaneously, polishing can also be carried out to band steel 7 surface, improve the brightness of product surface.
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 low consumption anti-corrosion great surface quality hot rolling acid-cleaning product processes, 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, rinsing 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 milled processed, repair steel strip surface defect;
G. mechanical plate face residue removal device is entered into the band steel ground through mechanical surface and carry out the cleaning of mechanical surface residue;
H. the band steel after process is batched through coiling machine and become finished product.
2. a kind of low consumption according to claim 1 anti-corrosion great surface quality hot rolling acid-cleaning product processes, 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 mechanical surface residue cleaning technology, planisher is configured with after processing uncoiler, multi-roll straightening machine, brushing device three cover possesses broken phosphorus, the process equipment of phosphorus removal functional, 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, finally more mechanical plate face residue removal device is entered into the band steel after mechanical surface grinding and carry out the cleaning of mechanical surface residue.
3. a kind of low consumption according to claim 2 anti-corrosion great surface quality hot rolling acid-cleaning product processes, comprise three mechanical types and break phosphorus, phosphorus removal functional, 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. a kind of low consumption according to claim 2 anti-corrosion great surface quality hot rolling acid-cleaning product processes, comprise smooth broken phosphorus, multiple roll aligning broken phosphorus, dephosphorization, scrub dephosphorization, pickling dephosphorization, mechanical surface grinding, mechanical surface residue cleaning technology, machinery dephosphorization efficiency is high, pickling time is short, acid consumption is low, strip surface quality good, final products surperficial acid solution residual quantity is low, and corrosion resistance is good.
5. a kind of low consumption according to claim 3 anti-corrosion great surface quality hot rolling acid-cleaning product processes, it is characterized in that, have and shorten acid reaction time function, through planisher, once broken phosphorus, multi-roll straightening machine secondary define permanent, large scale oxide crackle at belt steel surface after breaking phosphorus, brushing device dephosphorization to described band steel, now enter pickling again and carry out chemical dephosphorization, 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. a kind of low consumption according to claim 3 anti-corrosion great surface quality hot rolling acid-cleaning product processes, it is characterized in that, there is the function reducing acid consumption, described band steel is after through planisher, once broken phosphorus, multi-roll straightening machine secondary break phosphorus, brushing device dephosphorization, remove belt steel surface partial oxide, decrease chemical reaction amount, reduce acid consumption.
7. a kind of low consumption according to claim 4 anti-corrosion great surface quality hot rolling acid-cleaning product processes, it is characterized in that, the product surface quality produced is high, acid solution residual quantity is low, corrosion resistance is good; Mechanical surface grinding is carried out, to improve the surface quality of acid-washed product to the carbon steel product introduction mechanical lapping equipment through overpickling; Mechanical plate face residue removal device is entered into the band steel after mechanical surface milled processed and carries out the cleaning of mechanical surface residue, to remove the residue at belt steel surface convex-concave place, improving product corrosion resistance.
8. a kind of low consumption according to claim 3 anti-corrosion great surface quality hot rolling acid-cleaning product processes, it is characterized in that, comprise brokenly the breaking elongation controlling functions of phosphorus 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. a kind of low consumption according to claim 3 anti-corrosion great surface quality hot rolling acid-cleaning product processes, it is characterized in that, have under the prerequisite of not influence zone Steel Properties, remove the function of belt steel surface oxide, the combination of planisher, multi-roll straightening machine and brushing device can when being with steel percentage elongation to be 0.8%-1.5%, 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; High-strength steel, IF Steel Properties is avoided to worsen.
10. a kind of low consumption according to claim 3 anti-corrosion great surface quality hot rolling acid-cleaning product processes, 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 hot rolling acid-cleaning product of ejecting plate shape precision.
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| CN112501489B (en) * | 2020-10-31 | 2022-05-13 | 日照宝华新材料有限公司 | Production method of 300 MPa-grade low-carbon hot rolled steel without transverse fracture defect |
| CN114535313B (en) * | 2022-01-20 | 2023-06-30 | 邯郸钢铁集团有限责任公司 | Method for eliminating grid defects on surface of thin hot-rolled pickled plate |
| CN117139395B (en) * | 2023-10-27 | 2023-12-29 | 江苏通铜新材料有限公司 | Surface cleaning process and cleaning device for alloy copper strip production |
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| CN103920727A (en) | 2014-07-16 |
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