CN114309072A - Layer type accident handling method and device after plate strip is rolled without head and is put down and cut - Google Patents
Layer type accident handling method and device after plate strip is rolled without head and is put down and cut Download PDFInfo
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- CN114309072A CN114309072A CN202111371498.9A CN202111371498A CN114309072A CN 114309072 A CN114309072 A CN 114309072A CN 202111371498 A CN202111371498 A CN 202111371498A CN 114309072 A CN114309072 A CN 114309072A
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 81
- 239000010959 steel Substances 0.000 claims abstract description 81
- 230000007246 mechanism Effects 0.000 claims abstract description 67
- 238000005096 rolling process Methods 0.000 claims abstract description 40
- 239000002699 waste material Substances 0.000 claims abstract description 26
- 238000009749 continuous casting Methods 0.000 claims abstract description 24
- 238000010008 shearing Methods 0.000 claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- 238000011143 downstream manufacturing Methods 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 12
- 238000011144 upstream manufacturing Methods 0.000 claims description 12
- 238000005272 metallurgy Methods 0.000 abstract description 2
- 238000005266 casting Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 230000006698 induction Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000007665 sagging Methods 0.000 description 2
- 238000006748 scratching Methods 0.000 description 2
- 230000002393 scratching effect Effects 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- 229910001566 austenite Inorganic materials 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 230000010511 looping mechanism Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention belongs to the technical field of metallurgy, and relates to a layered accident treatment method and a layered accident treatment device after a plate strip is rolled without a head and is subjected to pendulum shearing; when the swing shears push the downstream process of the waste area to cause an accident and need to be shut down, the headless strip steel is cut off through the swing shears, the swing looper mechanism pulls the downstream strip steel which is cut off by the swing shears out of the swing shears, and the downstream strip steel is lifted to the upper part of the conveying roller way by the cantilever lifting device; the upper-stream strip steel after the pendulum shear is cut off continuously moves forwards on the conveying roller way, when the length of pushing waste is reached, the upper-stream strip steel is sheared into a single plate by the pendulum shear, and the rolling line is moved out by the pushing mechanism, so that the upper-stream equipment of the pendulum shear is not stopped; and after the downstream accident of the pendulum shear is processed, the pushing mechanism stops running, and the endless rolling production is restarted. The invention has the waste pushing function, the accident loop function and the scrap steel lifting function on the basis of pushing the waste area by the original pendulum shears, and solves the problem of continuous casting and continuous casting under the condition of no matching of the accident shears and the accident loop.
Description
Technical Field
The invention belongs to the technical field of metallurgy, and particularly relates to a layered accident handling method and device after a plate strip is rolled without a head and is subjected to pendulum shearing.
Background
Compared with the conventional hot-rolled strip steel production technology, the hot-rolled strip continuous casting and rolling technology has the advantages of energy conservation and emission reduction, particularly the thin-strip endless continuous casting and rolling technology represented by ESP (electronic stability program) is rapidly developed at home and abroad in nearly 10 years, and becomes an important selection path for green and intelligent hot rolling. The pendulum shear and the scrap pushing area in the continuous casting and rolling process play roles of removing a dummy bar and a scrap blank when continuous casting starts to cast, and play roles of shearing and continuously pushing out scrap steel when accidents occur in the downstream process, so that continuous production is ensured without being influenced by the downstream accidents, the production recovery time is reduced, and the heat supplementing cost of molten steel is reduced.
In the conventional continuous casting and rolling endless rolling technology, taking an ESP as an example, as shown in fig. 1, the processes from pendulum shearing to induction heating are pendulum shearing 1, pushing mechanism 5, accident shearing 11, pendulum looper mechanism 4, and induction heating in this order. When the continuous casting is started, the scrap pushing device 5 plays a role in moving the ingot-leading rod and the scrap blank sheared by the pendulum out of the rolling line. During headless rolling, when induction heating and accidents occur at the downstream, the pendulum shears 1 and the accident shears 11 carry out shearing, then the pendulum looper mechanism 4 is lifted, the lifting roller way 12 behind the accident shears 11 descends to a low position, at the moment, the strip steel 10 is divided into three parts, namely strip steel at the upstream of the pendulum shears, strip steel at a scrap pushing area between the pendulum shears and the accident shears, and strip steel at the downstream of the accident shears. The strip steel in the scrap pushing area between the swing shears and the accident shears still continues to move forwards after the swing looping mechanism is lifted up, the accident shears 11 break the strip steel into scrap steel according to the specified length, the scrap steel is stacked to the lifting roller way 12, and then the scrap steel is pushed out by the material pushing mechanism. The configuration and the control strategy can rapidly give out the scrap pushing area after the pendulum shear, ensure continuous casting and continuous casting, and the casting blank after the pendulum shear can be circularly transported out of the production line by the pushing mechanism 5.
The Chinese patent with the publication number of CN112024595A discloses a novel thin strip endless continuous casting and rolling process, and because the process has special process requirements of ferrite and austenite rolling, the pendulum shear and the scrap pushing area are not connected with an accident shear but directly connected with induction heating, the continuous casting and endless casting requirements can not be met by the equipment structure and the function of the existing pendulum shear pushing the scrap area when the downstream accident is not met; therefore, a waste pushing method and a waste pushing device which have the original waste pushing function and the loop function after the accident shear are required to be developed to solve the problem of continuous casting and continuous casting during accident handling.
Disclosure of Invention
In view of the above, the present invention is directed to a device and a scrap pushing method having a scrap pushing function, an accident loop function and a scrap lifting function, and provides a layer-type accident handling method and device after a plate strip is rolled without a head and is subjected to pendulum shearing.
In order to achieve the purpose, the invention provides the following technical scheme:
a layer type accident handling device after a plate strip is rolled without a head and is subjected to pendulum shear comprises a conveying roller way, a cantilever lifting mechanism, a swinging loop mechanism and a material pushing mechanism which are arranged after the pendulum shear;
the swing loop mechanism is arranged at the tail end of the conveying roller way and used for pulling the downstream strip steel after the pendulum is cut off out of the pendulum scissors;
the cantilever lifting mechanism is embedded in the conveying roller way and used for lifting the downstream strip steel to the position above the conveying roller way;
the pushing mechanism is arranged below the conveying roller way and used for transferring the strip steel cut off by the pendulum shears.
Further, the cantilever lifting mechanism comprises a lifting support, a driving device for driving the lifting support to lift and a cantilever which is connected with the lifting support and used for bearing the strip steel; the cantilever may employ motor driven rollers or a rectangular bracket or other load carrying structure.
Further, the swing loop mechanism comprises a fixed frame, a loop roller and a driving device, and the loop roller is rotationally connected with the fixed frame; the driving device is arranged on the fixed frame and connected with the loop roller to drive the loop roller to swing.
Further, an upper roller and a lower roller are arranged on the fixing frame, a strip steel channel is arranged between the upper roller and the lower roller, the lower roller is used for supporting strip steel to avoid the strip steel from sagging, and the upper roller is used for blocking the strip steel when the loop roller is lifted up to avoid the strip steel from contacting with equipment and scratching the strip steel.
Further, the driving device is a motor or a hydraulic cylinder.
A layer type accident processing method after the plate strip is rolled without head and is put and cut, the layer type accident processing device is arranged after the plate strip is put and cut; when the swing shears push the downstream process of the waste area to cause an accident and need to be shut down, the headless strip steel is cut off through the swing shears, the swing looper mechanism pulls the downstream strip steel which is cut off by the swing shears out of the swing shears, and the downstream strip steel is lifted to the upper part of the conveying roller way by the cantilever lifting device; the upper-stream strip steel after the pendulum shear is cut off continuously moves forwards on the conveying roller way, when the length of pushing waste is reached, the upper-stream strip steel is sheared into a single plate by the pendulum shear, and the rolling line is moved out by the pushing mechanism, so that the upper-stream equipment of the pendulum shear is not stopped; and after the downstream accident of the pendulum shear is processed, the material pushing mechanism stops running, the upstream strip steel is normally threaded, and the endless rolling production is restarted.
Furthermore, the downstream strip steel loaded on the cantilever lifter mechanism is manually cut off and lifted by a crown block to the outside of the rolling line.
Further, the thickness of the swing shear shearing strip steel is 8 mm-110 mm, and the width of the swing shear shearing strip steel is 0.6 m-2 m.
Further, the temperature of the band steel sheared by the pendulum shear is 800-1100 ℃.
Further, the continuous casting speed in the endless rolling process is controlled to be 3.5-7 m/min.
The invention has the beneficial effects that:
the invention has the functions of pushing waste, accident loop and lifting waste steel on the basis of the original pendulum shear waste pushing area, and all the functional devices are not interfered with each other, thereby not only effectively realizing the function of pushing a dummy bar and a waste billet during casting, but also separating the upstream strip steel from the downstream strip steel in a space layer manner during a downstream accident, ensuring that the upstream strip steel can be continuously produced, solving the problem of continuous casting and non-stop casting under the condition of no accident shear and accident loop matching, being beneficial to the quick recovery of production, and reducing the waste billet treatment between roller ways and the heat supplementing cost of molten steel caused by continuous casting and non-stop casting.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic structural diagram of a pendulum shear scrap pushing area in the prior continuous casting and rolling endless rolling technology;
FIG. 2 is a functional schematic diagram of the present invention at the time of continuous casting start-up;
fig. 3 is a functional schematic diagram of the endless rolling process according to the invention.
FIG. 4 is a schematic diagram of the accident loop operation of the present invention;
FIG. 5 is a schematic diagram of the operation of the lifting mechanism of the present invention;
FIG. 6 is a schematic diagram of the operation of the waste pushing mechanism of the present invention;
fig. 7 is a schematic view of the cantilever elevating mechanism.
Reference numerals: 1-pendulum shear; 2-conveying roller way; 3-a cantilever lifting mechanism; 4-swing loop mechanism; 5-a material pushing mechanism; 6-downstream section; 7-an upstream section; 8-strip steel; 9-waste blank; 10-strip steel; 11-accident shearing; 12-lifting roller way; 31-cantilever.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the invention thereto; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.
Referring to FIGS. 2 to 7, the thickness of the strip steel treated in this embodiment is 8mm to 110mm, the width is 0.6m to 2m, the temperature of the strip steel is 800 ℃ to 1100 ℃, and the casting speed is controlled to be 3.5 m/min to 7 m/min.
After the pendulum shears 1, a conveying roller way 2, a cantilever lifting mechanism 3, a swing loop mechanism 4 and a material pushing mechanism 5 are arranged. As shown in fig. 6, the material pushing mechanism 5 adopts a circular material pushing manner; the length of the cantilever lifting mechanism 3 and the swing loop mechanism 4 along the running direction of the strip steel is less than that of the material pushing mechanism 5; the swing loop mechanism 4 is positioned at the tail end of the conveying roller table 2 along the running direction of the strip steel; the cantilever lifting mechanism 3 and the swing loop mechanism 4 are embedded between the roller ways of the conveying roller way 2.
The cantilever 31 of the cantilever lifting mechanism 3 adopts a structural style that a motor drives a single-side fixed roller, and the cantilever lifting mechanism 3 comprises a lifting support, a driving device for driving the lifting support to lift and a cantilever 31 rotationally connected with the lifting support; the cantilever comprises a rotating shaft and a roller fixedly arranged on the rotating shaft; the rotating shaft is connected with the motor and is driven to rotate by the motor.
The swing loop mechanism 4 comprises a fixed frame, a loop roller and a driving device, and the loop roller is rotationally connected with the fixed frame; the driving device is arranged on the fixed frame and connected with the loop roller to drive the loop roller to swing.
The upper roller and the lower roller are arranged on the fixing frame, a band steel channel is arranged between the upper roller and the lower roller, the lower roller is used for supporting band steel to avoid the band steel from sagging, and the upper roller is used for blocking the band steel when the loop roller is lifted up to avoid the band steel from contacting with equipment and scratching the band steel.
The function of this embodiment is implemented as follows:
1) scrap pushing function of continuous casting pouring
As shown in fig. 2, when continuous casting is started, the swing loop mechanism 4 is in a lifting state to ensure the length of the scrap pushing area, and the cantilever 31 of the cantilever lifting mechanism 3 and the bracket of the material pushing mechanism 5 are both in a low position. When the dummy bar is transported to a scrap pushing area by the conveying roller bed 2 through the pendulum shears 1, the material pushing mechanism 5 performs lifting, moving out, falling and returning. After the dummy bar is pushed out, the subsequent continuous casting rectangular waste blank or the wedge-shaped waste blank pressed by rough rolling is circularly pushed out by the pushing mechanism 5. When the set last waste billet 9 is pushed out, the swing shears 1 do not shear any more, the swing loop mechanism 4 quickly falls and resets, the falling rhythm is that the finishing time reaches the inlet side of the swing loop mechanism 4 earlier than the head of the upstream strip steel, then the strip steel enters a threading mode, and the whole device enters a headless rolling control mode after the strip steel passes through the reset swing loop mechanism 4.
2) Function of handling accident during endless rolling
As shown in fig. 4 to 5, when an accident occurs at the downstream, the pendulum shear 1 rapidly cuts the endless strip steel into the upstream section 7 and the downstream section 6, then the pendulum looper mechanism 4 is rapidly lifted, the downstream section 6 is pulled out of the pendulum shear 1 area, then the cantilever lifting mechanism 3 rapidly lifts the downstream section 6 to the upper level, and the lower waste pushing area space is made available. The upstream section 7 of the strip steel is not stopped, the strip steel continuously advances along the steel moving direction, when the waste pushing length is reached, the strip steel is cut into a single piece of strip steel 8 by the pendulum shears 1, then the strip steel is conveyed to a waste pushing area by the conveying roller way 2, the strip steel is conveyed out of the rolling line by the material pushing mechanism 5, and the process is repeated. And the downstream section 6 is manually cut off and is hung outside the rolling line by a crane.
When the accident is processed, the swing shears 1 stops shearing, after the pushing mechanism 5 conveys the currently cut upstream section 7 out, the cantilever lifting mechanism 3 and the swing loop mechanism 4 complete resetting before the head of the upstream section 7 reaches the inlet sides of the cantilever lifting mechanism 3 and the swing loop mechanism 4, so that the strip can be smoothly threaded, and a headless rolling mode is entered.
The invention solves the problem that the waste pushing area can be rapidly yielded when the downstream accident of the production flow occurs only by the structural function of the pendulum shear pushing the waste area under the condition of no accident shear and accident loop matching, ensures that the pendulum shear and the upstream process are not stopped, is beneficial to reducing the production recovery time and the heat compensation cost of molten steel, and creates conditions for the novel continuous casting and rolling endless rolling process.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.
Claims (10)
1. The utility model provides a laminar accident handling device after slab band is headless rolling down pendulum is cut which characterized in that: the device comprises a conveying roller way, a cantilever lifting mechanism, a swinging loop mechanism and a pushing mechanism which are arranged behind a swing shear;
the swing loop mechanism is arranged at the tail end of the conveying roller way and used for pulling the downstream strip steel after the pendulum is cut off out of the pendulum scissors;
the cantilever lifting mechanism is embedded in the conveying roller way and used for lifting the downstream strip steel to the position above the conveying roller way;
the pushing mechanism is arranged below the conveying roller way and used for transferring the strip steel cut off by the pendulum shears.
2. The plate strip endless rolling pendulum sheared layered accident treatment device according to claim 1, characterized in that: the cantilever lifting mechanism comprises a lifting support, a driving device for driving the lifting support to lift and a cantilever which is connected with the lifting support and used for bearing strip steel.
3. The plate strip endless rolling pendulum sheared layered accident treatment device according to claim 2, characterized in that: the swing loop mechanism comprises a fixed frame, a loop roller and a driving device, and the loop roller is rotationally connected with the fixed frame; the driving device is arranged on the fixed frame and connected with the loop roller to drive the loop roller to swing.
4. The plate strip endless rolling pendulum sheared layered accident treatment device according to claim 3, characterized in that: the fixing frame is provided with an upper roller and a lower roller, and a band steel channel is arranged between the upper roller and the lower roller.
5. The plate strip endless rolling pendulum sheared layered accident treatment device according to claim 3, characterized in that: the driving device is a motor or a hydraulic cylinder.
6. A layer type accident handling method after plate and strip endless rolling lower pendulum shearing is characterized in that: a layered accident management apparatus as claimed in any one of claims 1 to 5 arranged after the pendulum shear; when the swing shears push the downstream process of the waste area to cause an accident and need to be shut down, the headless strip steel is cut off through the swing shears, the swing looper mechanism pulls the downstream strip steel which is cut off by the swing shears out of the swing shears, and the downstream strip steel is lifted to the upper part of the conveying roller way by the cantilever lifting device; the upper-stream strip steel after the pendulum shear is cut off continuously moves forwards on the conveying roller way, when the length of pushing waste is reached, the upper-stream strip steel is sheared into a single plate by the pendulum shear, and the rolling line is moved out by the pushing mechanism, so that the upper-stream equipment of the pendulum shear is not stopped; and after the downstream accident of the pendulum shear is processed, the material pushing mechanism stops running, the upstream strip steel is normally threaded, and the endless rolling production is restarted.
7. The plate strip endless rolling lower hem shearing layered accident handling method according to claim 6, characterized in that: the downstream strip steel loaded on the cantilever lifter mechanism is manually cut off and lifted to the outside of the rolling line by a crown block.
8. The plate strip endless rolling lower hem shearing layered accident handling method according to claim 6, characterized in that: the thickness of the pendulum shear shearing strip steel is 8 mm-110 mm, and the width is 0.6 m-2 m.
9. The plate strip endless rolling lower hem shearing layered accident handling method according to claim 6, characterized in that: the temperature of the band steel sheared by the pendulum shear is 800-1100 ℃.
10. The plate strip endless rolling lower hem shearing layered accident handling method according to claim 6, characterized in that: the continuous casting speed in the endless rolling process is controlled to be 3.5-7 m/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111371498.9A CN114309072B (en) | 2021-11-18 | 2021-11-18 | Layered accident handling method and device after endless rolling and lower swinging shearing of plate strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111371498.9A CN114309072B (en) | 2021-11-18 | 2021-11-18 | Layered accident handling method and device after endless rolling and lower swinging shearing of plate strip |
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| Publication Number | Publication Date |
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| CN114309072A true CN114309072A (en) | 2022-04-12 |
| CN114309072B CN114309072B (en) | 2023-11-03 |
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| CN202111371498.9A Active CN114309072B (en) | 2021-11-18 | 2021-11-18 | Layered accident handling method and device after endless rolling and lower swinging shearing of plate strip |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114713631A (en) * | 2022-05-18 | 2022-07-08 | 首钢长治钢铁有限公司 | Rolling production system integration |
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| CN114713631B (en) * | 2022-05-18 | 2024-01-12 | 首钢长治钢铁有限公司 | Rolling production system integration |
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| Publication number | Publication date |
|---|---|
| CN114309072B (en) | 2023-11-03 |
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