CN217315139U - Bar production line and high-precision product intelligent control system thereof - Google Patents
Bar production line and high-precision product intelligent control system thereof Download PDFInfo
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- CN217315139U CN217315139U CN202220733404.1U CN202220733404U CN217315139U CN 217315139 U CN217315139 U CN 217315139U CN 202220733404 U CN202220733404 U CN 202220733404U CN 217315139 U CN217315139 U CN 217315139U
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Abstract
The utility model discloses a bar production line and a high-precision product intelligent control system thereof, which comprises a heating furnace, a rough rolling production unit, a middle rolling production unit and a finish rolling production unit which are connected in sequence; the rough rolling production unit comprises a rough rolling unit, a first diameter gauge and a first flying shear which are sequentially arranged behind the rough rolling unit; the middle rolling production unit comprises a middle rolling mill unit, and a second diameter gauge and a second flying shear which are sequentially arranged behind the middle rolling mill unit; the finish rolling production unit comprises a finish rolling unit, a first cooling device, a third diameter gauge and a third flying shear, wherein the first cooling device, the third diameter gauge and the third flying shear are arranged behind the finish rolling unit. The utility model discloses a through all set up a calibrator behind each group of rod production line, through the rolled piece dimensional change condition behind each unit of calibrator real-time supervision, the closed loop monitoring and the adjustment of each unit rolled piece size can be convenient for realize by recombination control system again, reducible adjustment worker intensity of labour and work load have improved labor efficiency, production stability, product quality stability and general strip nature.
Description
Technical Field
The utility model relates to a rod production line and intelligent control system of high accuracy product thereof.
Background
The bar is used as an important product in the steel industry, has wide product range and various types, comprises spring steel, bearing steel, cord steel, alloy structural steel, tool steel, deformed steel and the like, and is widely applied to national important industries such as automobiles, machinery, bridges, metal products, buildings and the like. With the rapid and continuous development of economy in China, the yield of the bar materials in China is continuously increased, 48714 ten thousand tons in 2019, and the yield of the bar materials reaches 48.9 percent of the yield of crude steel in China.
The main wire rolling line unit configuration mainly comprises: the device comprises a heating furnace, a rough rolling unit, a middle rolling unit, a pre-finishing rolling unit, a diameter measuring after finishing rolling, a reducing and sizing unit, a diameter measuring after reducing and sizing, and a pinch roll wire laying head; the configuration of the bar main rolling line unit mainly comprises: the device comprises a heating furnace, a rough rolling unit, a middle rolling unit, a finishing rolling unit, diameter measurement after finish rolling, a reducing and sizing unit, diameter measurement after reducing and sizing, a double-length flying shear and a cooling bed.
In order to improve the quality of bar production line products and the intellectualization of the production line, such as product size precision, product drift, product performance stability and the like, manufacturers at home and abroad configure diameter gauges at the front and back of a final rolling mill group at present, detect the change of the product size precision in real time, combine an adjuster to adjust the roll gap of the rolling mill at regular time, and change a groove, a roller and a roll collar at proper time according to the steel passing condition so as to ensure that the final products meet the requirements of customers, however, the method has the following problems:
1. diameter measuring instruments are arranged only at the front and the rear of the final mill group, so that the abrasion conditions of rollers of frames of the pre-former rough mill group and the middle mill group cannot be detected in real time;
2. only diameter measuring instruments are arranged at the front and the rear of a final rolling mill group, and the abrasion condition of a frame of a preorder unit cannot be effectively controlled;
3. the diameter measuring instrument configured in the final rolling unit only has a detection function, closed-loop control cannot be realized, and real-time adjustment cannot be realized;
4. when the roll gap is adjusted, the adjustment is carried out only by the actual experience of an adjuster, the dependence on the adjuster is too strong, and the high-precision control of the quality cannot be realized;
5. when the roll gap is adjusted manually, the production environment is severe, unsafe and easy to cause accidents;
6. when the manual adjustment is carried out, the accuracy is influenced by the operation accuracy, and the adjusted accuracy of different operators is different;
7. the automation and intellectualization of the whole line are not high in the first section, and the production efficiency is not high;
aiming at the problems existing in the prior bar production, the developed bar production line and production method which can realize the real-time tracking of the size data of the rolled piece of each unit of the production line so as to realize the real-time control and reduce the labor intensity and workload of an adjuster are the technical problems to be solved urgently.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a bar production line to solve the problem that current bar production line can not trail each unit rolled piece size data of production line in real time.
In order to solve the technical problem, the utility model provides a bar production line, which comprises a heating furnace, a rough rolling production unit, a middle rolling production unit and a finish rolling production unit which are connected in sequence; the rough rolling production unit comprises a rough rolling unit, a first diameter gauge and a first flying shear which are sequentially arranged behind the rough rolling unit; the middle rolling production unit comprises a middle rolling mill unit, and a second diameter gauge and a second flying shear which are sequentially arranged behind the middle rolling mill unit; and the finish rolling production unit comprises a finish rolling unit, a first cooling device, a third diameter gauge and a third flying shear which are arranged behind the finish rolling unit.
Furthermore, the bar production line also comprises a reducing diameter production unit arranged behind the finish rolling production unit; the reducing and sizing production unit comprises a reducing and sizing unit, and a second cooling device and a fourth diameter gauge which are sequentially arranged behind the reducing and sizing unit.
Further, the first cooling device and the second cooling device are both cooling water tanks.
Further, this rod production line still includes to set gradually third flying shear and fourth cooling device behind the fourth calibrator.
Another object of the utility model is to provide a high accuracy product intelligence control system suitable for above-mentioned rod production line to solve the problem that current rod production line control system can not in time adjust each unit of production line.
In order to solve the technical problems, the invention also provides a high-precision product intelligent control system suitable for the bar production line, which comprises a rough rolling unit control unit connected with a rough rolling production unit, an intermediate rolling unit control unit connected with an intermediate rolling production unit and a finish rolling unit control unit connected with a finish rolling production unit; the input end of the roughing mill group control unit is connected with the output end of the first diameter gauge, and the output end of the roughing mill group control unit is connected with the roughing mill group roll gap adjusting mechanism; the input end of the control unit of the middle rolling mill unit is connected with the output end of the second diameter gauge, and the output end of the control unit of the middle rolling mill unit is connected with the roll gap adjusting mechanism of the middle rolling mill unit; the input end of the control unit of the finishing mill group is connected with the output end of the third diameter gauge, and the output end of the control unit of the finishing mill group is connected with the roll gap adjusting mechanism of the finishing mill group.
Furthermore, the control system also comprises an automatic roll changing and groove changing mechanism of the roughing mill group and an automatic guide changing mechanism of the roughing mill group which are respectively connected with the output end of the control unit of the roughing mill group, an automatic roll changing and groove changing mechanism of the intermediate mill group and an automatic guide changing mechanism of the intermediate mill group which are respectively connected with the output end of the control unit of the intermediate mill group, and an automatic turn-over mechanism of the finishing mill group, an automatic roll changing mechanism of the finishing mill group and an automatic guide changing mechanism of the finishing mill group which are respectively connected with the output end of the control unit of the finishing mill group.
Further, the bar production line also comprises a reducing diameter production unit arranged after the finish rolling production unit; the reducing and sizing production unit comprises a reducing and sizing machine set, and a second cooling device and a fourth diameter gauge which are sequentially arranged behind the reducing and sizing machine set; the control system also comprises a reducing and sizing unit control unit connected with the reducing and sizing production unit; the input end of the reducing and sizing mill set control unit is connected with the output end of the fourth diameter measuring instrument, and the output end of the reducing and sizing mill set control unit is connected with the reducing and sizing mill set roll gap adjusting mechanism, the reducing and sizing mill set automatic turn-over mechanism, the reducing and sizing mill set automatic roll changing mechanism and the reducing and sizing mill set diameter guide automatic replacing mechanism.
The utility model has the advantages that: the diameter measuring instrument is arranged behind each group of the bar production line, the size change condition of the rolled piece behind each group is monitored in real time through the diameter measuring instrument, closed-loop monitoring and adjustment of the size of the rolled piece of each group can be conveniently realized by combining a control system, the labor intensity and the workload of an adjuster can be reduced, and the labor efficiency, the production stability, the product quality stability and the strip passing performance are improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a simplified layout of a bar production line not equipped with a reducing and sizing mill according to an embodiment of the present invention.
Fig. 2 is a simplified layout of a bar production line with a reducing and sizing mill according to an embodiment of the present invention.
Wherein: 1. heating furnace; 2. a roughing mill train; 21. a first caliper; 22. a first flying shear; 3. a medium mill group; 31. a second caliper; 32. a second flying shear; 4. a finishing mill group; 41. a first cooling device; 42. A third caliper; 43. a third flying shear; 5. a reducing sizing mill set; 51. a second cooling device; 52. a fourth caliper; 6. a multiple length cooling bed; 61. multiple length flying shears.
Detailed Description
A bar production line as shown in fig. 1 and 2 includes a heating furnace 1, a rough rolling production unit, a medium rolling production unit, a finish rolling production unit, and a reduction diameter production unit, which are connected in this order; the rough rolling production unit comprises a rough rolling unit 2, and a first diameter gauge 21 and a first flying shear 22 which are sequentially arranged behind the rough rolling unit 2; the middle rolling production unit comprises a middle rolling mill unit 3, and a second diameter gauge 31 and a second flying shear 32 which are sequentially arranged behind the middle rolling mill unit 3; the finish rolling production unit comprises a finish rolling unit 4, a first cooling device 41 arranged behind the finish rolling unit 4, a third diameter gauge 42 and a third flying shear 43; the reducing and sizing production unit comprises a reducing and sizing machine set 5, and a second cooling device 51 and a fourth diameter gauge 52 which are sequentially arranged behind the reducing and sizing machine set 5.
The following is a detailed description of the working principle of each unit of the bar production line:
the principle of rolling and diameter measurement of the roughing mill set is as follows: adopting a horizontal and vertical alternative short stress path rough rolling mill group to perform 4-8 passes of rolling on the blank heated by the heating furnace 1, and also adopting a non-pass rolling and a pass rolling, wherein when the pass rolling is adopted, a rough rolling mill group is a box-ellipse-round pass system; when pass rolling is adopted, guides and guards are arranged at the front and the rear of each rolling mill, the first flying shears 22 are used for shearing the head and the tail of a rolled piece after the rolling of the roughing mill group 2, a first diameter gauge 21 is arranged behind the roughing mill group 2, the first diameter gauge 21 monitors the data of the head diameter, the middle diameter and the tail diameter of the rolled piece and the ellipticity of the rolled piece in real time, and the monitored data are sent to a control system to be compared with size standard data in real time.
The principle of rolling and diameter measurement of the intermediate mill set is as follows: the method comprises the steps of rolling a rolled piece which is rolled by a rough rolling unit 2 and is cut end to end by a first flying shear 22 through a 4-6-pass short stress line intermediate rolling unit, wherein a pass system is an oval-round pass system during rolling, guides and guards are arranged at the front and the rear of each rolling mill, the rolled piece is cut end to end by a second flying shear 32 after being rolled by the intermediate rolling unit 3, a second diameter gauge 31 is arranged behind the intermediate rolling unit 3, the head diameter of the rolled piece, the middle diameter of the rolled piece and the tail diameter and the ovality data of the rolled piece are monitored by the second diameter gauge 31 in real time, and the monitored data are sent to a control system to be compared with size standard data in real time.
The principle of rolling and diameter measurement of the finishing mill group is as follows: and (3) rolling the rolled piece which is rolled by the middle rolling mill group 3 and is cut end to end by the second flying shear 32 by using a 2-6-pass finishing mill group, wherein the pass system is an oval-round pass system during rolling, guides and guards are arranged at the front and the back of each rolling mill, a third diameter gauge 42 is arranged behind the finishing mill group, the third diameter gauge 42 monitors data of the head diameter of the rolled piece, the middle diameter of the rolled piece and the tail diameter and the ovality of the rolled piece in real time, and sends the monitored data to a control system for real-time comparison with size standard data.
Rolling and diameter measuring by a reducing and sizing unit: and 4-pass cantilever 45-degree top-crossing reducing sizing mill set rolling is carried out on the rolled piece rolled by the finishing mill set 4, a pass system is an ellipse-circle pass system during rolling, guides and guards are arranged at the front and the back of each rolling mill, a fourth diameter gauge 52 is arranged at the back of the reducing sizing mill set 5, the fourth diameter gauge 52 monitors the head diameter of the rolled piece, the middle diameter of the rolled piece and the tail diameter and the ellipticity of the rolled piece in real time, and the monitored data are sent to a control system to be compared with size standard data in real time.
According to an embodiment of the present application, the first cooling device 41 and the second cooling device 51 are both cooling water tanks; the first cooling device 41 and the second cooling device 51 are arranged to respectively carry out water cooling on the rolled piece rolled by the finishing mill group and the reducing sizing mill group, so that an ideal microstructure and better mechanical properties of the product can be obtained.
According to an embodiment of the present application, the bar production line further comprises a fourth flying shear 6 and a third cooling device, arranged in sequence after said fourth caliper 52; the rolled piece is cut by a multiple-length flying shear (third flying shear 6) and cooled by a multiple-length cooling bed (third cooling device) 1, and then collected.
According to an embodiment of the application, the utility model also discloses a high accuracy product intelligent control system suitable for above-mentioned rod production line, including the roughing mill group control unit who is connected with the roughing production unit, the intermediate rolling mill group control unit who is connected with the intermediate rolling production unit and the finishing mill group control unit who is connected with the finishing production unit; the input end of the roughing mill group control unit is connected with the output end of the first diameter gauge 21, and the output end of the roughing mill group control unit is connected with the roll gap adjusting mechanism of the roughing mill group; the input end of the control unit of the middle rolling mill unit is connected with the output end of the second diameter gauge 31, and the output end of the control unit of the middle rolling mill unit is connected with the roll gap adjusting mechanism of the middle rolling mill unit; the input end of the finishing mill group control unit is connected with the output end of the third diameter gauge 42, and the output end of the finishing mill group control unit is connected with the roll gap adjusting mechanism of the finishing mill group.
The rough mill group control unit, the middle mill group control unit and the finishing mill group control unit are used for respectively acquiring the size data of the rolled piece monitored by the first diameter gauge 21, the second diameter gauge 31 and the third diameter gauge 42 and comparing the monitored size data of the rolled piece with size standard data in real time; when the size data of the rolled piece is larger than the size standard data, a regulating instruction can be sent to the corresponding roll gap regulating mechanism of the roughing mill group, the roll gap regulating mechanism of the intermediate mill group and the roll gap regulating mechanism of the finishing mill group, and the regulating instruction is used for regulating the roll gap of the rack in the specified pass at the rolling gap so as to ensure that the ovality of the outlet size of the roughing mill group meets the calculation requirement.
The roll gap adjusting mechanism of the roughing mill group, the roll gap adjusting mechanism of the middle mill group and the roll gap adjusting mechanism of the finishing mill group can adopt the existing hydraulic cylinders; when the rollers are worn, the upper and lower rollers of each mechanism are synchronously adjusted towards the middle by using the hydraulic cylinders, the moving distance of the rollers can be controlled by the proximity switch, and when the hydraulic cylinders extend to push the rollers to contact the proximity switch, the pushing action is stopped, and the adjustment of the roller gap of the unit is completed.
According to an embodiment of the present application, the control system further comprises an automatic roughing mill group roll changing and groove changing mechanism and an automatic roughing mill group guide changing mechanism respectively connected to an output end of the roughing mill group control unit, an automatic intermediate mill group roll changing and groove changing mechanism and an automatic intermediate mill group guide changing mechanism respectively connected to an output end of the intermediate mill group control unit, and an automatic finishing mill group turning mechanism, an automatic finishing mill group roll changing mechanism and an automatic finishing mill group guide changing mechanism respectively connected to an output end of the finishing mill group control unit.
The automatic roll changing and groove changing mechanism, the guide automatic changing mechanism and the automatic turn-over mechanism can adopt the prior mechanical arm only to carry out groove changing, roll changing and guide adjusting operation. When the size precision of the rolled piece of each unit cannot be realized by adjusting the roll gap after rolling for a certain tonnage, roll changing, turning over and guide adjusting operations are required to be carried out on the unit units; after adjustment, the rolling center line of the stand, the guide center line and the rolling center line need to be ensured to be aligned.
According to an embodiment of the application, the bar production line further comprises a reduction diameter production unit arranged after the finish rolling production unit; the reducing and sizing production unit comprises a reducing and sizing machine set 5, and a second cooling device 51 and a fourth diameter gauge 52 which are sequentially arranged behind the reducing and sizing machine set 5; the control system also comprises a reducing and sizing unit control unit connected with the reducing and sizing production unit; the input end of the reducing and sizing unit control unit is connected with the output end of the fourth diameter measuring instrument 52, and the output end of the reducing and sizing unit control unit is connected with the reducing and sizing unit roll gap adjusting mechanism, the reducing and sizing unit automatic turning mechanism, the reducing and sizing unit automatic roll changing mechanism and the reducing and sizing unit diameter guide automatic replacing mechanism.
The reducing and sizing mill set is generally a two-roll or three-roll longitudinal rolling continuous mill, the reducing not only expands the variety and specification of the mill set production and increases the rolling length, but also reduces the specification quantity of the hollow billet required by the front process, the corresponding specification of the hollow billet, tool spare parts and the like, and simplifies the production management; in addition, the number of times of replacing production specifications in the front process is reduced, and the production capacity of the unit is improved. Similarly, in the reducing and sizing rolling process, the head diameter, the middle diameter and the tail diameter of the rolled piece and the ellipticity data of the rolled piece can be monitored in real time by the fourth diameter gauge 52, and the monitored data are sent to the control system to be compared with the size standard data in real time. When the rollers of the reducing and sizing mill set are worn, the roller gap distance can be adjusted through a roller gap adjusting mechanism of the reducing and sizing mill set, and when the size precision of rolled pieces of each reducing and sizing mill set cannot be realized by adjusting the roller gap after rolling for a certain ton, the mill set needs to be subjected to roller changing, turning and guide adjustment operations; after adjustment, the rolling center line of the stand, the guide center line and the rolling center line need to be ensured to be aligned.
Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.
Claims (7)
1. A bar production line is characterized by comprising a heating furnace, a rough rolling production unit, a medium rolling production unit and a finish rolling production unit which are connected in sequence; the rough rolling production unit comprises a rough rolling unit, a first diameter gauge and a first flying shear which are sequentially arranged behind the rough rolling unit; the middle rolling production unit comprises a middle rolling mill unit, and a second diameter gauge and a second flying shear which are sequentially arranged behind the middle rolling mill unit; and the finish rolling production unit comprises a finish rolling unit, a first cooling device, a third diameter gauge and a third flying shear which are arranged behind the finish rolling unit.
2. The rod production line according to claim 1, further comprising a reduction diameter production unit disposed after the finish rolling production unit; the reducing and sizing production unit comprises a reducing and sizing unit, and a second cooling device and a fourth diameter gauge which are sequentially arranged behind the reducing and sizing unit.
3. The rod production line according to claim 2, wherein the first cooling device and the second cooling device are both cooling water tanks.
4. The bar production line of claim 2, wherein the reducing and sizing mill train is a two-high tandem mill or a three-high tandem mill.
5. A high-precision product intelligent control system suitable for the bar production line according to any one of claims 1 or 2, comprising a rough rolling unit control unit connected to the rough rolling production unit, an intermediate rolling unit control unit connected to the intermediate rolling production unit, and a finish rolling unit control unit connected to the finish rolling production unit; the input end of the control unit of the roughing mill group is connected with the output end of the first diameter gauge, and the output end of the control unit of the roughing mill group is connected with the roll gap adjusting mechanism of the roughing mill group; the input end of the control unit of the middle rolling mill unit is connected with the output end of the second diameter gauge, and the output end of the control unit of the middle rolling mill unit is connected with the roll gap adjusting mechanism of the middle rolling mill unit; the input end of the control unit of the finishing mill group is connected with the output end of the third diameter gauge, and the output end of the control unit of the finishing mill group is connected with the roll gap adjusting mechanism of the finishing mill group.
6. The control system of claim 5, further comprising a roughing mill automatic roll changing and grooving mechanism and a roughing mill guide automatic changing mechanism connected to an output of the roughing mill control unit, respectively, an intermediate mill automatic roll changing and grooving mechanism and an intermediate mill guide automatic changing mechanism connected to an output of the intermediate mill control unit, respectively, and a finishing mill automatic turn-over mechanism, a finishing mill automatic roll changing mechanism and a finishing mill guide automatic changing mechanism connected to an output of the finishing mill control unit, respectively.
7. The control system according to claim 6, characterized in that the bar production line further comprises a reduction diameter production unit arranged after said finishing production unit; the reducing and sizing production unit comprises a reducing and sizing machine set, and a second cooling device and a fourth diameter gauge which are sequentially arranged behind the reducing and sizing machine set; the control system also comprises a reducing and sizing unit control unit connected with the reducing and sizing production unit; the input end of the reducing and sizing unit control unit is connected with the output end of the fourth diameter measuring instrument, and the output end of the reducing and sizing unit control unit is connected with the reducing and sizing unit roll gap adjusting mechanism, the reducing and sizing unit automatic turn-over mechanism, the reducing and sizing unit automatic roll changing mechanism and the reducing and sizing unit diameter guide automatic replacing mechanism.
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| CN202220733404.1U CN217315139U (en) | 2022-03-31 | 2022-03-31 | Bar production line and high-precision product intelligent control system thereof |
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| CN202220733404.1U CN217315139U (en) | 2022-03-31 | 2022-03-31 | Bar production line and high-precision product intelligent control system thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114589206A (en) * | 2022-03-31 | 2022-06-07 | 中冶赛迪工程技术股份有限公司 | Wire and rod production line, high-precision product intelligent control system suitable for wire and rod production line and control method |
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2022
- 2022-03-31 CN CN202220733404.1U patent/CN217315139U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114589206A (en) * | 2022-03-31 | 2022-06-07 | 中冶赛迪工程技术股份有限公司 | Wire and rod production line, high-precision product intelligent control system suitable for wire and rod production line and control method |
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