CN113732086A - Push-pull and continuous dual-purpose strip steel surface cleaning production line and cleaning method thereof - Google Patents
Push-pull and continuous dual-purpose strip steel surface cleaning production line and cleaning method thereof Download PDFInfo
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- CN113732086A CN113732086A CN202111176183.9A CN202111176183A CN113732086A CN 113732086 A CN113732086 A CN 113732086A CN 202111176183 A CN202111176183 A CN 202111176183A CN 113732086 A CN113732086 A CN 113732086A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 203
- 239000010959 steel Substances 0.000 title claims abstract description 203
- 238000004140 cleaning Methods 0.000 title claims abstract description 87
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 85
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000005520 cutting process Methods 0.000 claims abstract description 39
- 238000003466 welding Methods 0.000 claims abstract description 33
- 238000010924 continuous production Methods 0.000 claims abstract description 29
- 238000003860 storage Methods 0.000 claims abstract description 28
- 238000005554 pickling Methods 0.000 claims description 23
- 238000005422 blasting Methods 0.000 claims description 6
- 230000009977 dual effect Effects 0.000 claims description 6
- 238000010008 shearing Methods 0.000 claims description 6
- 238000011144 upstream manufacturing Methods 0.000 claims description 6
- 238000004804 winding Methods 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 239000002253 acid Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 241000277275 Oncorhynchus mykiss Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
- B21B45/06—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing of strip material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B15/0007—Cutting or shearing the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B15/0085—Joining ends of material to continuous strip, bar or sheet
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/08—Iron or steel
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G3/00—Apparatus for cleaning or pickling metallic material
- C23G3/02—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously
- C23G3/021—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously by dipping
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B15/0007—Cutting or shearing the product
- B21B2015/0014—Cutting or shearing the product transversely to the rolling direction
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Winding, Rewinding, Material Storage Devices (AREA)
Abstract
The invention provides a push-pull and continuous dual-purpose strip steel surface cleaning production line and a cleaning method thereof, and the push-pull and continuous dual-purpose strip steel surface cleaning production line comprises a welding machine (5), a first strip steel storage device, a cutting shear (13) and a strip steel surface cleaning device which are sequentially arranged along the working direction of the push-pull and continuous dual-purpose strip steel surface cleaning production line. The push-pull and continuous dual-purpose strip steel surface cleaning production line can realize flexible switching under push-pull and continuous production modes, meets the requirement that the thickness of strip steel is produced between 0.8mm and 12.7mm, adopts continuous production between 0.8mm and 6mm, adopts push-pull production between 6mm and 12.7mm, and has the advantages of wide coverage range of the thickness of produced strips, flexible switching production modes, simple equipment and civil engineering, less investment and the like.
Description
Technical Field
The invention relates to the field of steel rolling equipment, in particular to a push-pull and continuous dual-purpose strip steel surface cleaning production line and a push-pull and continuous dual-purpose strip steel surface cleaning method.
Background
In the hot rolling production mode of the strip steel, a layer of scale is generated on the surface of the strip steel, and the scale must be removed in the subsequent production and use processes of the strip steel, namely, the scale of the strip steel is removed. At present, the technology for removing scale on a large scale mainly adopts a method for cleaning strip steel by hydrochloric acid, and the production modes of the method comprise two modes, wherein one mode adopts that each coil of steel is threaded, namely a push-pull type pickling line; and the other method is to weld the head and the tail of the front steel coil and the tail of the rear steel coil together, namely continuous production.
The push-pull type pickling production unit is characterized by small investment and flexible and convenient production, the thickness of the produced strip steel is 2.2mm-12.7mm, but when the strip steel with the thickness of 2.2mm-6mm needs to be produced in large batch and high yield, the push-pull type pickling unit has the defects of slow pace and low yield, and meanwhile, as each steel coil needs to be threaded, the threading of the strip steel below 2.2mm is very difficult, so that the push-pull type pickling production unit is not suitable for adopting push-pull type production.
The continuous pickling production unit is characterized in that the head and the tail of a front steel coil and a rear steel coil are welded together, large horizontal loops are arranged in the front and the rear of an acid tank of the continuous pickling production unit and used for storing strip steel, the strip steel in the acid tank is not stopped when the unit is shut down in a process of entering and exiting, the pickling quality is guaranteed, and the unit can realize continuous production. The thickness of the strip steel which is most suitable for the continuous pickling line is 0.8mm-6mm, and the strip steel needs to be bent repeatedly when passing through the devices due to the devices such as a loop, an S-shaped tension roller and the like arranged in the line, while for thicker strip steel, the strip steel is difficult to be bent and straightened, and the strip steel can only be produced in a horizontal state, so that the continuous pickling line is not suitable for the production of the thicker strip steel.
In conclusion, a dual-purpose pickling line for push-pull production and continuous production does not exist in the prior art, and the pickling line is suitable for the surface cleaning production of strip steel with the thickness of 0.8-12.7 mm.
The noun explains:
push-pull type production: each steel coil is produced independently without welding, each coil of strip steel needs to be threaded, and the production is discontinuous;
continuous production: the front and the rear steel coils are welded together by a welding machine for continuous production
Disclosure of Invention
In order to have the functions of push-pull production and continuous production, the invention aims to provide a push-pull and continuous dual-purpose strip steel surface cleaning production line and a cleaning method thereof, the push-pull and continuous dual-purpose strip steel surface cleaning production line can realize flexible switching under push-pull and continuous production modes, the production of strip steel with the thickness of 0.8-12.7 mm is met, the continuous production is adopted between 0.8-6 mm, the push-pull production is adopted between 6-12.7 mm, and the push-pull type strip steel surface cleaning production line has the advantages of wide thickness coverage range of produced strip steel, flexible switching production mode, simple equipment and civil engineering, less investment and the like.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a push-pull and continuous dual-purpose strip steel surface cleaning production line comprises a welding machine, a first steering pinch roll, a first strip steel storage device, a second steering pinch roll, a cutting shear and strip steel surface cleaning device which are sequentially arranged along the working direction of the push-pull and continuous dual-purpose strip steel surface cleaning production line; the first strip storage steel equipment comprises a first tension roller, a first deviation rectifying single roller, a first loop device, a second deviation rectifying single roller and a second tension roller which are sequentially arranged.
The upper stream of the welding machine is provided with a coiling trolley, an uncoiler, a straightener and a hydraulic shear, and the coiling trolley, the uncoiler, the straightener and the hydraulic shear are arranged in sequence along the working direction of the push-pull and continuous dual-purpose strip steel surface cleaning production line.
The hydraulic pressure is cut for double-deck hydraulic pressure, and the hydraulic pressure is cut and is contained last cutting edge and the lower cutting edge that sets up of interval from top to bottom, and the dolly of going up the book includes that the first dolly of going up the book and the second of going up the book dolly, and the decoiler includes first decoiler and second decoiler, and the straightener includes first straightener and second straightener, and first dolly of going up the book, first decoiler and first straightener lie in the upper reaches of last cutting edge in proper order, and the dolly of going up the book, second decoiler and second straightener lie in the upper reaches of lower cutting edge in proper order on the second.
And a first pinch roll is arranged between the lower shear blade and the welding machine, and a third steering pinch roll is arranged between the upper shear blade and the first pinch roll along the working direction of the push-pull and continuous dual-purpose strip steel surface cleaning production line.
The first looping device is a horizontal looping device.
Along the working direction of the push-pull and continuous dual-purpose strip steel surface cleaning production line, the strip steel surface cleaning equipment comprises a pickling tank, a rinsing tank and a dryer which are arranged in sequence; or the strip steel surface cleaning equipment comprises a shot blasting descaling machine.
And a corner cutting shear and a head raising device are sequentially arranged between the cutting shear and the strip steel surface cleaning equipment along the working direction of the push-pull and continuous dual-purpose strip steel surface cleaning production line, and a second pinch roll, a second loop device, a deviation rectifying pinch roll, a circle shear and slitter edge processing device, a three-roll tension roll, a tail cutting shear and a double-pinch roll are sequentially arranged at the lower reaches of the strip steel surface cleaning equipment.
The lower reaches of the double pinch rolls are sequentially provided with a coiling machine and a coil stripping trolley, the coiling machine comprises a first coiling machine and a second coiling machine, the coil stripping trolley comprises a first coil stripping trolley and a second coil stripping trolley, the first coiling machine and the first coil stripping trolley are arranged correspondingly, and the second coiling machine and the second coil stripping trolley are arranged correspondingly.
The push-pull and continuous dual-purpose strip steel surface cleaning method adopts the push-pull and continuous dual-purpose strip steel surface cleaning production line, and comprises the following steps:
in a continuous production mode, strip steel of a first specification sequentially passes through a welding machine, a first steering pinch roll, first strip storage steel equipment, a second steering pinch roll, a cutting shear and strip steel surface cleaning equipment, and the welding machine welds the head and the tail of two adjacent strip steel of the first specification into a whole;
under the push-pull type production mode, strip steel of a second specification sequentially passes through a welding machine, a first steering pinch roll, a second steering pinch roll, a cutting shear and the strip steel surface cleaning equipment, and the strip steel of the second specification does not enter the first strip steel storage equipment.
In the process of switching from the continuous production mode to the push-pull production mode, the strip steel of the first specification is cut off by a cutting shear, and a section of strip steel of the first specification is stored in the first strip steel storage device;
and in the process of switching the push-pull production mode into the continuous production mode, the welding machine welds the strip steel of the first specification outside the first strip steel storage equipment and one section of the strip steel of the first specification stored in the first strip steel storage equipment into a whole from head to tail.
The invention has the beneficial effects that:
1. the thickness of the produced strip steel is 0.8mm-12.7mm, and the thickness range of the covered product is wide.
2. Compared with a completely continuous pickling production line, the investment of equipment and civil engineering plants is less.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.
FIG. 1 is a schematic view of the strip surface cleaning line for both push-pull and continuous use according to the present invention.
Figure 2 is a schematic view of the reeling carriage section.
FIG. 3 is a schematic view of the unwind carriage location.
1. A reeling trolley; 2. an uncoiler; 3. a straightening machine; 4. hydraulic shearing; 5. a welding machine; 6. a first diverting pinch roll; 7. a first tension roller; 8. a first deviation correcting single roller; 9. a second deviation rectifying single roller; 10. a first looper; 11. a second tension roller; 12. a second turning pinch roll; 13. cutting off the scissors; 14. cutting corners; 15. a nose raising device; 16. a pickling tank; 17. a rinsing tank; 18. a dryer; 19. a second pinch roll; 20. a second looper; 21. correcting a pinch roll; 22. a circle shear and a scrap edge processing device; 23. three-roller tension rollers; 24. tail cutting scissors; 25. double pinch rolls; 26. a coiler; 27. coil stripping trolley; 28. a first pinch roll; 29. a third steering pinch roll;
101. a first reeling trolley; 102. a second reeling trolley;
201. a first uncoiler; 202. a second uncoiler;
301. a first straightener; 302. a second straightener;
401. an upper shear blade; 402. a lower shear blade;
2601. a first coiler; 2602. a second coiler;
2701. a first coil stripping trolley; 2702. and the second coil stripping trolley.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
A push-pull and continuous dual-purpose strip steel surface cleaning production line is characterized in that along the working direction A (namely the strip steel advancing direction during working) of the push-pull and continuous dual-purpose strip steel surface cleaning production line, the push-pull and continuous dual-purpose strip steel surface cleaning production line comprises a welding machine 5, a first steering pinch roll 6, a first strip steel storage device, a second steering pinch roll 12, a cutting shear 13 and a strip steel surface cleaning device which are sequentially arranged; along the proceeding direction of the strip steel during working, the first strip steel storage device comprises a first tension roller 7, a first deviation rectifying single roller 8, a first loop device 10, a second deviation rectifying single roller 9 and a second tension roller 11 which are sequentially arranged, as shown in figure 1.
The push-pull and continuous dual-purpose strip steel surface cleaning production line can realize flexible switching under push-pull and continuous production modes, meets the requirement that the thickness of strip steel is produced between 0.8mm and 12.7mm, adopts continuous production between 0.8mm and 6mm, adopts push-pull production between 6mm and 12.7mm, and has the advantages of wide coverage range of the thickness of produced strips, flexible switching production modes, simple equipment and civil engineering, less investment and the like.
In this embodiment, the upper coiling trolley 1, the uncoiler 2, the straightener 3 and the hydraulic shears 4 are arranged upstream of the welding machine 5, and the upper coiling trolley 1, the uncoiler 2, the straightener 3 and the hydraulic shears 4 are arranged in sequence along the working direction a (which can be roughly understood as the direction from back to front) of the push-pull and continuous dual-purpose strip steel surface cleaning production line. The coiling trolley 1, the uncoiler 2, the straightener 3 and the hydraulic shears 4 can all adopt products in the prior art.
In this embodiment, the hydraulic shears 4 is a double-layer hydraulic shear, the hydraulic shears 4 includes an upper cutting edge 401 and a lower cutting edge 402 which are arranged at an interval from top to bottom, the upper winding trolley 1 includes a first upper winding trolley 101 and a second upper winding trolley 102, the uncoiler 2 includes a first uncoiler 201 and a second uncoiler 202, the straightener 3 includes a first straightener 301 and a second straightener 302, the first upper winding trolley 101, the first uncoiler 201 and the first straightener 301 are sequentially located at the upstream of the upper cutting edge 401, and the second upper winding trolley 102, the second uncoiler 202 and the second straightener 302 are sequentially located at the upstream of the lower cutting edge 402, as shown in fig. 2.
The first straightener 301 and the second straightener 302 are arranged up and down, the first uncoiler 201 and the second uncoiler 202 are arranged up and down, and the first coiling trolley 101 and the second coiling trolley 102 are arranged up and down.
In this embodiment, in the working direction of the strip steel surface cleaning production line for both push-pull and continuous use, a first pinch roll 28 is arranged between the lower cutting edge 402 and the welding machine 5, and a third steering pinch roll 29 is arranged between the upper cutting edge 401 and the first pinch roll 28. Both the first pinch roll 28 and the third diverting pinch roll 29 may be of prior art. The welder 5 is used for welding two adjacent strip steels into a strip steel end to end in a continuous production mode.
In this embodiment, the first strip storage facility may be located below or above the first diverting pinch roll 6 and the second diverting pinch roll 12. The first steering pinch roll 6, the second steering pinch roll 12, the first tension roll 7, the first deviation rectifying single roll 8, the first loop device 10, the second deviation rectifying single roll 9 and the second tension roll 11 can adopt products in the prior art.
The first looper 10 is intended to store a length of steel strip to ensure continuous production in the said push-pull and continuous dual-purpose strip surface cleaning line. The first looper 10 may employ a horizontal looper or a vertical looper. Preferably, the first looper 10 may employ a horizontal looper such as a two-layer horizontal looper, a four-layer horizontal looper, or a six-layer horizontal looper.
In this embodiment, the strip surface cleaning may be performed by chemical descaling with hydrochloric acid, that is, along the working direction of the strip surface cleaning line for both push-pull and continuous use, the strip surface cleaning apparatus includes a pickling tank 16, a rinsing tank 17 and a dryer 18, which are sequentially disposed. Alternatively, the strip surface cleaning may be performed physically, for example, the strip surface cleaning apparatus includes a shot blasting descaler, such as a wet blasting cell descaler or a dry blasting descaler. The pickling tank 16, the rinsing tank 17, the dryer 18 and the shot blasting descaler can all adopt products in the prior art.
In this embodiment, along the working direction of the strip steel surface cleaning production line with the dual purposes of push-pull and continuous operation, a corner shear 14 and a nose raising device 15 are sequentially arranged between the cutting shear 13 and the strip steel surface cleaning equipment, and a second pinch roll 19, a second loop device 20, a deviation correcting pinch roll 21, a circle shear and slitter edge processing device 22, a three-roll tension roll 23, a tail shear 24 and a double-pinch roll 25 are sequentially arranged at the downstream of the strip steel surface cleaning equipment. The second pinch roll 19, the second loop device 20, the deviation-correcting pinch roll 21, the circle shear and scrap edge processing device 22, the three-roll tension roll 23, the tail shear 24 and the double pinch roll 25 can all adopt products in the prior art.
In this embodiment, the second looping device 20 is used to store a length of steel strip, ensuring the continuous production of the strip surface cleaning line for both push-pull and continuous use. The second looper 20 may employ a horizontal looper, a vertical looper, or a pit-type looper.
In this embodiment, a coiler 26 and a coil stripping trolley 27 are sequentially arranged downstream of the double pinch roll 25 along the working direction of the strip steel surface cleaning production line for both push-pull and continuous use, the coiler 26 comprises a first coiler 2601 and a second coiler 2602, the coil stripping trolley 27 comprises a first coil stripping trolley 2701 and a second coil stripping trolley 2702, the first coiler 2601 is arranged corresponding to the first coil stripping trolley 2701, and the second coiler 2602 is arranged corresponding to the second coil stripping trolley 2702, as shown in fig. 3. Both the coiler 26 and the coil-stripping car 27 can be of prior art construction.
The second coiler 2602 and the first coiler 2601 are arranged in tandem, and the second unrolling cart 2702 and the first unrolling cart 2701 are arranged in tandem.
The push-pull and continuous dual-purpose strip steel surface cleaning method adopts the push-pull and continuous dual-purpose strip steel surface cleaning production line, and comprises the following steps:
in a continuous production mode, strip steel of a first specification sequentially passes through a welding machine 5, a first steering pinch roll 6, first strip steel storage equipment, a second steering pinch roll 12, a cutting shear 13 and strip steel surface cleaning equipment, the welding machine 5 welds two adjacent strip steel of the first specification into a whole from head to tail, the strip steel of the first specification enters the first strip steel storage equipment, and the strip steel surface cleaning equipment treats the surface of the strip steel of the first specification;
under plug-type production mode, belted steel of second kind specification passes through welding machine 5, first direction pinch roll 6, second in proper order and turns to pinch roll 12, cuts off scissors 13 and belted steel surface cleaning equipment, welding machine 5 does not handle the belted steel of second kind specification, the belted steel of second kind specification does not get into in the first storage strip steel equipment, belted steel surface cleaning equipment handles the surface of the belted steel of second kind specification.
The working process of the strip surface cleaning line for both push-pull and continuous use shown in fig. 1 will be described in detail.
In a continuous production mode, strip steel of a first specification on a first coiling trolley 101 sequentially passes through a first uncoiler 201, a first straightener 301, an upper shearing edge 401 of a hydraulic shear 4, a third steering pinch roll 29, a first pinch roll 28, a welder 5, a first steering pinch roll 6, a first tension roll 7, a first deviation-correcting single roll 8, a second deviation-correcting single roll 9, a first looping device 10, a second tension roll 11, a second steering pinch roll 12, a cutting shear 13, a corner shear 14, a head raising device 15, a pickling tank 16, a rinsing tank 17, a dryer 18, a second pinch roll 19, a second looping device 20, a deviation-correcting pinch roll 21, a circle shear and scrap edge processing device 22, a tension roll 23, a tail shear three-roll 24, a double-pinch roll 25 and a first coiling machine 2601, and then is coiled on a first coil unloading trolley 2701.
Under continuous type production mode, welding machine 5 welds the belted steel head and the tail of two adjacent first specifications integratively, the belted steel of first specification gets into in first storage strip steel equipment (being first tension roll 7, first single roller 8, the second single roller 9, first looper 10 and the second tension roll 11 of rectifying), belted steel surface cleaning equipment (being pickling bath 16, rinsing bath 17 and drying-machine 18) handles the surface of the belted steel of first specification. The first looper 10 (horizontal looper) can store enough strip steel, and the inlet section stops when the inlet welder 5 is welding, so that the pickling tank 16 can be ensured to produce according to the speed of the process section.
In a push-pull production mode, strip steel of a second specification on the second coiling trolley 102 sequentially passes through the first uncoiler 201, the first straightener 301, the upper shear blade 401 of the hydraulic shear 4, the first pinch roll 28, the welder 5, the first steering pinch roll 6, the second steering pinch roll 12, the cutting shear 13, the corner shear 14, the head raising device 15, the pickling tank 16, the rinsing tank 17, the dryer 18, the second pinch roll 19, the second looper 20, the deviation-correcting pinch roll 21, the circle shear and slitter edge processing device 22, the three-roll tension roll 23, the tail-cutting shear 24, the double-pinch roll 25 and the second coiler 2602, and then is coiled into a steel coil on the second uncoiling trolley 2702.
In a push-pull production mode, the welding machine 5 does not process the strip steel of the second specification, the strip steel of the second specification does not enter the first strip storage steel equipment, the strip steel passes through the first steering pinch roll 6 and the second steering pinch roll 12 in a horizontal state, and the strip steel surface cleaning equipment processes the surface of the strip steel of the second specification.
In the process of switching from the continuous production mode to the push-pull production mode, the cutting scissors 13 cut off the strip steel of the first specification, and a section of the strip steel of the first specification is stored in the first strip steel storage device; in the process of switching from the push-pull production mode to the continuous production mode, the welding machine 5 welds the strip steel of the first specification outside (i.e. new or next) the first strip steel storage equipment and a section (about 50m) of the strip steel of the first specification stored in the first strip steel storage equipment into a whole from head to tail.
The strip steel enters a second loop device 20 (pit type loop) after being discharged from a pickling tank 16, a rinsing tank 17 and a dryer 18 in a continuous production mode or a push-pull production mode, and the pit type loop has the function of ensuring that a process section does not stop when the strip steel is reeled and cut off at an outlet and the process is stopped, so that the pickling quality of the strip steel is ensured. After passing through the pit type loop, the strip steel sequentially enters a circle shear and scrap edge processing device 22, a three-roller tension roller 23, a tail cutting shear 24 and a double-nip roller 25, and finally the coiling of the strip steel is completed by a coiling machine 26 and the coil unloading is completed by a coil unloading trolley 27.
The push-pull and continuous dual-purpose strip steel surface cleaning production line and the cleaning method thereof are characterized in that:
1. the welded strip steel enters a first loop device 10 (horizontal loop) through a lower channel for continuous production; the unwelded strip steel is kept in a horizontal state through the upper channel to carry out push-pull type production.
2. The cutting scissors 13 are arranged outside the outlet of the first strip steel storage device, when the continuous mode needs to be switched to the push-pull mode, the cutting scissors 13 cut off the strip steel, a section of strip steel with the length of about 50m is reserved in the first looping device 10 and serves as a traction belt, and when the push-pull mode of the follow-up strip steel is switched to the continuous mode, the traction belt retreats to the welding machine and is welded with the next section of steel coil, so that the trouble that the strip steel penetrates through the first looping device 10 when the production mode is switched is eliminated.
3. The inlet is provided with double uncoilers (a first uncoiler 201 and a second uncoiler 202), the inlet downtime during welding is reduced,
4. the outlet is provided with double pinch rolls 25 which provide certain back tension and ensure the coiling effect of the thick strip steel.
5. The outlet is provided with double recoiling machines (a first recoiling machine 2601 and a second recoiling machine 2602), so that the coil discharging operation time of the outlet is reduced, and the production efficiency is improved.
A first steering pinch roll 6, a second steering pinch roll 12, a first strip steel storage device and a cutting shear 13 are arranged behind a welding machine 5, flexible switching of production modes of a push-pull type continuous unit can be achieved, a section of strip steel with the length of about 50m is reserved in a first loop device 10 (a horizontal loop), and the problem that strip threading is difficult in the horizontal loop when the production modes are switched is solved.
In the present invention, the number of the unwinders 2 at the entrance may be one or two; the outlet area of the coiler 26 can be one or two. The strip steel of the first specification and the strip steel of the second specification can be distinguished by thickness, for example, the thickness of the strip steel of the first specification is 0.8mm-6mm, namely, greater than or equal to 0.8mm and less than or equal to 6 mm; the thickness of the strip steel with the second specification is 6mm-12.7mm, namely, the thickness is more than 6mm and less than or equal to 12.7 mm.
The specific production mode selection is not limited to the thickness of the strip steel, and other thickness selections can be adopted; meanwhile, the production mode can be selected according to the variety of the strip steel material. For example, the strip steel of the first specification is made of common steel and is selected for continuous production; the strip steel of the second specification is made of high-quality steel or silicon steel and the like, and push-pull production is selected. In other words, the strip of the first specification and the strip of the second specification can also be distinguished by composition or mechanical properties, for example, the bending strength of the strip of the first specification is less than the bending strength of the strip of the second specification. The strip steel of the first specification may be a strip steel suitable for an existing continuous production mode, and the strip steel of the second specification may be a strip steel suitable for an existing push-pull production mode.
For convenience of understanding and description, the absolute positional relationship is used in the present invention for expression, and in this case, the orientation word "up" indicates an upper direction in fig. 1, the orientation word "down" indicates a lower direction in fig. 1, the orientation word "front" indicates a right direction in fig. 1, and the orientation word "rear" indicates a left direction in fig. 1, unless otherwise specified. The present invention has been described in terms of the viewing angle of the reader or operator, but the above directional terms should not be construed or interpreted as limiting the scope of the present invention.
The above description is only exemplary of the invention and should not be taken as limiting the scope of the invention, so that the invention is intended to cover all modifications and equivalents of the embodiments described herein. In addition, the technical features and the technical schemes, and the technical schemes can be freely combined and used.
Claims (10)
1. The push-pull and continuous dual-purpose strip steel surface cleaning production line is characterized by comprising a welding machine (5), a first steering pinch roll (6), a first strip steel storage device, a second steering pinch roll (12), a cutting shear (13) and strip steel surface cleaning equipment which are sequentially arranged along the working direction of the push-pull and continuous dual-purpose strip steel surface cleaning production line; the first strip storage steel equipment comprises a first tension roller (7), a first deviation rectifying single roller (8), a first loop device (10), a second deviation rectifying single roller (9) and a second tension roller (11) which are sequentially arranged.
2. The push-pull and continuous dual-purpose strip steel surface cleaning production line as claimed in claim 1, wherein an upper coiling trolley (1), an uncoiler (2), a straightener (3) and a hydraulic shear (4) are arranged at the upstream of the welding machine (5), and the upper coiling trolley (1), the uncoiler (2), the straightener (3) and the hydraulic shear (4) are sequentially arranged along the working direction of the push-pull and continuous dual-purpose strip steel surface cleaning production line.
3. The push-pull and continuous dual-purpose strip steel surface cleaning production line as claimed in claim 1, wherein the hydraulic shears (4) are double-layer hydraulic shears, the hydraulic shears (4) comprise an upper shearing edge (401) and a lower shearing edge (402) which are arranged at an upper-lower interval, the upper coiling trolley (1) comprises a first upper coiling trolley (101) and a second upper coiling trolley (102), the uncoiler (2) comprises a first uncoiler (201) and a second uncoiler (202), the straightener (3) comprises a first straightener (301) and a second straightener (302), the first upper coiling trolley (101), the first uncoiler (201) and the first straightener (301) are sequentially located at the upstream of the upper shearing edge (401), and the second upper coiling trolley (102), the second uncoiler (202) and the second straightener (302) are sequentially located at the upstream of the lower shearing edge (402).
4. The strip steel surface cleaning production line for push-pull and continuous dual use according to claim 3, characterized in that a first pinch roll (28) is provided between the lower shear blade (402) and the welding machine (5), and a third steering pinch roll (29) is provided between the upper shear blade (401) and the first pinch roll (28) in the working direction of the strip steel surface cleaning production line for push-pull and continuous dual use.
5. Push-pull and continuous dual-purpose strip steel surface cleaning line according to claim 1, characterized in that the first looper (10) is a horizontal looper.
6. The push-pull and continuous dual-purpose strip steel surface cleaning production line as claimed in claim 1, wherein the strip steel surface cleaning equipment comprises a pickling tank (16), a rinsing tank (17) and a dryer (18) which are arranged in sequence along the working direction of the push-pull and continuous dual-purpose strip steel surface cleaning production line;
or the strip steel surface cleaning equipment comprises a shot blasting descaling machine.
7. The strip steel surface cleaning production line with the dual purposes of push-pull and continuous as claimed in claim 1, characterized in that along the working direction of the strip steel surface cleaning production line with the dual purposes of push-pull and continuous, a corner cutting shear (14) and a head raising device (15) are sequentially arranged between a cutting shear (13) and the strip steel surface cleaning equipment, and a second pinch roll (19), a second loop device (20), a deviation correcting pinch roll (21), a circle shear and scrap edge processing device (22), a three-roll tension roll (23), a tail cutting shear (24) and a double-pinch roll (25) are sequentially arranged at the downstream of the strip steel surface cleaning equipment.
8. The strip steel surface cleaning production line with the push-pull and continuous dual purposes as claimed in claim 7 is characterized in that a coiling machine (26) and a coil stripping trolley (27) are sequentially arranged at the downstream of the double pinch roll (25), the coiling machine (26) comprises a first coiling machine (2601) and a second coiling machine (2602), the coil stripping trolley (27) comprises a first coil stripping trolley (2701) and a second coil stripping trolley (2702), the first coiling machine (2601) is arranged corresponding to the first coil stripping trolley (2701), and the second coiling machine (2602) is arranged corresponding to the second coil stripping trolley (2702).
9. A push-pull and continuous dual-purpose strip steel surface cleaning method is characterized in that the push-pull and continuous dual-purpose strip steel surface cleaning method adopts the push-pull and continuous dual-purpose strip steel surface cleaning production line of claim 1, and the push-pull and continuous dual-purpose strip steel surface cleaning method comprises the following steps:
in a continuous production mode, strip steel of a first specification sequentially passes through a welding machine (5), a first steering pinch roll (6), first strip steel storage equipment, a second steering pinch roll (12), a cutting shear (13) and strip steel surface cleaning equipment, and the welding machine (5) welds two adjacent strip steel of the first specification end to end into a whole;
under the push-pull type production mode, strip steel of a second specification sequentially passes through a welding machine (5), a first steering pinch roll (6), a second steering pinch roll (12), a cutting shear (13) and strip steel surface cleaning equipment, and the strip steel of the second specification does not enter the first strip steel storage equipment.
10. The method of claim 9, wherein the strip steel surface is cleaned by a continuous and push-pull method,
in the process of switching from the continuous production mode to the push-pull production mode, a cutting shear (13) cuts the strip steel of the first specification, and a section of strip steel of the first specification is stored in the first strip steel storage device;
in the process of switching from the push-pull production mode to the continuous production mode, the welding machine (5) welds the strip steel of the first specification outside the first strip steel storage equipment and one section of the strip steel of the first specification stored in the first strip steel storage equipment into a whole from head to tail.
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| CN202111176183.9A CN113732086A (en) | 2021-10-09 | 2021-10-09 | Push-pull and continuous dual-purpose strip steel surface cleaning production line and cleaning method thereof |
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