CN218361302U - Precision copper plate and strip rolling production line - Google Patents
Precision copper plate and strip rolling production line Download PDFInfo
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- CN218361302U CN218361302U CN202222867328.6U CN202222867328U CN218361302U CN 218361302 U CN218361302 U CN 218361302U CN 202222867328 U CN202222867328 U CN 202222867328U CN 218361302 U CN218361302 U CN 218361302U
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Abstract
A rolling mill of the precision copper plate and strip rolling production line adopts a four-roller system structure, intermediate product recoiling machines are symmetrically arranged on two sides of the rolling mill, a coiled material heating furnace is arranged outside a reel of the intermediate product recoiling machine, a tension detection roller and a cooling device are arranged between the recoiling machines and the rolling mill, and a high-temperature solid solution system is arranged between a finished product recoiling machine and an adjacent intermediate product recoiling machine; the four-roller rolling mill is matched with the tension detection roller to accurately control the rolling tension parameters in the copper strip rough rolling process, so that the dimensional accuracy of the copper strip after rough rolling is greatly improved; the coiled material heating furnace heats and preserves the heat of the copper strip, changes the original copper strip rough rolling process from cold rough rolling into hot rough rolling, and simultaneously cooperates with a high-temperature solid solution system to greatly improve the residual stress and the microstructure of the copper strip after rough rolling, thereby obtaining the 'precise copper strip' with high dimensional precision, low residual stress and good microstructure.
Description
Technical Field
The utility model relates to a non ferrous metal precision strip foil production facility field, concretely relates to precision copper strip rolling production line.
Background
The copper strip foil is a main product type for processing and applying copper and copper alloy, accounts for more than 20% of the yield of deformed copper, and is widely applied to the fields of aerospace, national defense and military industry, military equipment, modern communication, electronic information and the like; with the continuous development of the technology, the quality requirements for copper strips in the fields of aerospace, national defense and military industry, military equipment, modern communication, electronic information and the like are higher and higher, wherein the requirements for the copper strips include the dimensional precision, residual stress, surface finish, anisotropy, elongation, strength, dielectric constant, corrosion resistance, high temperature resistance and creep resistance of the copper strips, and the high-grade copper strips are also called as 'precision strip foils' in the domestic and foreign industries.
The final quality of the 'precision strip foil' is guaranteed not by the final finish rolling, surface treatment and heat treatment production, but by the whole process of copper blank hot rolling, copper strip rough rolling, middle rolling, copper foil finish rolling, surface treatment and heat treatment production which runs through the 'precision strip foil' production, namely the copper blank hot rolling and the copper strip rough rolling also have great influence on the quality of the final 'precision strip foil', particularly the size precision, residual stress and microstructure organization of the copper strip after the rough rolling production have the greatest influence on the quality of the subsequent 'precision strip foil' rolling production; at present, due to the limitation of production equipment and process design (the rough rolling of the copper strip mostly adopts a cold rough rolling process), and the recognition that the dimensional precision, residual stress and microstructure organization of the copper strip after the rough rolling production have influence on the final quality of the subsequent precision strip foil production is insufficient, few enterprises which can produce precision copper strips with high dimensional precision, low residual stress and good microstructure organization are few in China, and the problem of the matching of the quality of the front-end copper strips and the final precision strip foil production is caused, so that the technology blind spot of the precision strip foil production in China is formed.
At present, the import amount of the 'precision band foil' accounts for more than 90% of the consumption amount of the 'precision band foil' in China, so how to ensure the matching between the quality of the front-end 'precision copper plate band' and the production of the rear-end 'precision band foil' solves the technical blind point of the 'precision band foil' production, promotes the domestic import of replacement, and becomes one of the key problems to be solved urgently in the 'precision band foil' production.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects in the background technology, the utility model discloses a precision copper plate strip rolling production line; the rolling mill of the precision copper plate strip rolling production line adopts a four-roll system structure, the two sides of the rolling mill are symmetrically provided with an intermediate product coiling machine, the outside of a scroll of the intermediate product coiling machine is provided with a coiled material heating furnace, a tension detection roll and a cooling device are arranged between the coiling machine and the rolling mill, and a high-temperature solid solution system is arranged between a finished product coiling machine and an adjacent intermediate product coiling machine, so that the production from copper blank hot rolling to copper strip hot rough rolling can be completed on the production line at one time; the four-roller rolling mill is matched with the tension detection roller to accurately control the tension parameters in the copper strip rough rolling process, so that the dimensional accuracy of the copper strip after rough rolling is greatly improved; the coiled material heating furnace heats and keeps the copper strip, changes the original copper strip rough rolling process from cold rough rolling into hot rough rolling, and is matched with a high-temperature solid solution system, so that the residual stress and the microstructure structure of the copper strip after rough rolling are greatly improved, the precision copper strip with high size precision, low residual stress and good microstructure structure is obtained, the problem of matching between the quality of the front-end precision copper strip and the production of rear-end precision band foil is solved, the technical blind spot of the domestic current production of the precision band foil is solved, and a good foundation is laid for domestic production of the precision band foil.
In order to realize the utility model aims at, the utility model adopts the following technical scheme: a rolling production line of precision copper plates and strips comprises a roller way and a rolling mill arranged in the middle section of the roller way; the rolling mill adopts a four-roller system structure, and the outer sides of the working rollers of the original rolling mill are respectively added with a supporting roller, and the diameter of the original working roller is reduced, so that the rolling mill can meet the technological requirements of copper billet hot rolling and the copper strip rough rolling; the two sides of the rolling mill are symmetrically provided with an intermediate product coiling machine, the thickness of a coiled copper strip of the intermediate product coiling machine 2 is 3 to 28mm, and the maximum coiling external diameter is 2500mm; the distance between the intermediate product coiler and the rolling mill is set to be 5-12m, a coil heating furnace is arranged outside a reel of the intermediate product coiler, the heating temperature range of the coil heating furnace is 600-1000 ℃, and protective gases such as nitrogen and argon are simultaneously configured; after the copper billet is rolled, the copper billet is coiled in an intermediate product coiling machine, meanwhile, the copper billet is heated in a coiled material heating furnace in a heat preservation mode, and the copper strip is continuously subjected to rough hot rolling, so that the improvement of the process brings two beneficial effects: 1. the residual heat after the copper billet is hot-rolled is used for continuously carrying out the hot rolling of the copper strip, so that the original cooling process after the copper billet is hot-rolled is omitted, and the residual heat after the copper billet is hot-rolled can be fully utilized, thereby reducing the energy consumption; 2. the cold rough rolling of the copper strip is changed into hot rough rolling, so that the residual stress of the copper strip after the cold rough rolling is reduced; a finished product coiling machine is arranged at one end of the roller way, and a high-temperature solid solution system is arranged between the finished product coiling machine and an adjacent intermediate product coiling machine, so that the copper strip after rough rolling can be subjected to online high-temperature solid solution treatment, and the microstructure of the copper strip after hot rough rolling is further improved; the high-temperature solid solution system and the finished product coiling machine are provided with butt-joint tailor-welding devices, and the butt-joint tailor-welding devices are used for connecting the copper strips after hot rough rolling on line to form a hot-rolled copper strip coil with a larger size; the precision copper plate strip rolling production line can produce hot-rolled copper plates with the thickness of 6-28mm, and can also produce precision hot-rolled copper strips with the thickness of 3-6mm, so that the production quality is ensured, the subsequent cold rolling processing amount is reduced, and the production flow is shortened; more subsequent cold rolling processes of the copper plate strip are distributed in the hot rolling process stage, so that the total energy consumption of copper plate strip production is reduced, the equipment investment of subsequent copper strip cold rolling and intermediate annealing is reduced, and the total processing process flow of the precise copper strip foil is shortened.
Furthermore, a plurality of magnetorheological fluid clutches are arranged in a driving transmission chain of a reel of the intermediate product coiler, a driving torque is synthesized by the plurality of magnetorheological fluid clutches to drive the reel to rotate, and the rolling tension output by the reel is controlled by controlling the size of the synthesized driving torque; the utility model changes the traditional control structure that rolling tension is controlled by controlling the rotation speed difference between the scroll and the working roll or the driving torque of the scroll driving motor, but adopts the magneto-rheological fluid clutch to directly control the torque of the scroll to control the rolling tension, thereby overcoming the problems of long transmission chain length, large rotational inertia, slow response speed and low precision of the driving system of the traditional tension control structure; in addition, the utility model provides an adopt the synthetic moment of torsion that drives the spool of a plurality of magnetic current liquid clutch, because the biggest moment of torsion that current magnetic current liquid clutch can provide is less, and the required rolling tension of copper strips hot rough rolling is great, can not realize yet that a magnetic current liquid clutch provides sufficient moment of torsion for the spool at present.
Furthermore, a tension detection roller, a cooling device and a coiler guide roller are arranged between the coiler and the rolling mill; the tension detection roller is used for detecting the rolling tension in the hot rough rolling of the copper strip, so that the tension control precision of the hot rough rolling is improved, and the size control precision of the hot rough rolling is further improved; the cooling device is used for rapidly cooling after the hot rough rolling is finished, so that the microstructure of the copper strip after the hot rough rolling is improved; the coiler guide roller is used for ensuring the wrap angle of the copper strip on the tension detection roller and improving the detection precision of the tension detection roller.
Further, one end of a roller way of the precision copper plate strip rolling production line, which is far away from the finished product coiling machine, is also movably provided with 1-2 sets of roller way furnaces; roller ways are respectively arranged inside and outside the roller way furnace, and a transverse moving device is arranged at the bottom of the roller way furnace; the length of the roller furnace is 20-40m, and the heating temperature range is 700-1200 ℃; the roller furnace is provided with protective gases such as nitrogen, argon and the like; when the roller furnace heats and preserves the plate, the roller furnace translates to align the roller way outside the roller furnace with the roller way of the production line, and can continue to roll other copper blanks.
Furthermore, the rolling mill comprises two pairs of working roll systems which are symmetrically arranged up and down, each working roll system comprises a working roll and a supporting roll, the diameter of each working roll is 200-400mm, the diameter of each supporting roll is 400-900mm, and the supporting rolls are symmetrically arranged at the outer sides of the rolling gaps of the two working rolls and used for supporting and reinforcing the rigidity of the working rolls; in the metal rolling production, the roll diameter has direct relation with the plate strip thickness that can produce finally, and the roll diameter is bigger, and the minimum thickness of the copper strip that can roll and produce finally is also about big, so traditional copper embryo rolling production line is limited by bigger roll diameter, and it can only be used for the hot rolling of copper embryo, and can't accomplish the rolling processing of the precision copper strip that the thickness is thinner in the utility model discloses in, through reducing the work roll diameter, realized on traditional copper rolling production line to the hot rolling of the precision copper strip that the finished product thickness is littleer; after the diameter of the working roll is reduced, the rigidity of the working roll is reinforced by the supporting roll.
Furthermore, the tension detection roller is a solid roller, two groups of pressure sensors are uniformly distributed around the axis, and the two groups of pressure sensors are symmetrically arranged in the axis direction; in actual work, the average value of the output values of the two groups of pressure sensors is taken as the acquisition value of the tension detection sensor so as to improve the stability of data acquisition; the roller body of the tension detection roller is of an integral structure, and the pressure sensor is axially arranged in the roller body of the tension detection roller.
Due to the adoption of the technical scheme, the utility model discloses following beneficial effect has: the utility model discloses an accurate copper plate strip rolling production line; the rolling mill of the precision copper plate strip rolling production line adopts a four-roll system structure, the two sides of the rolling mill are symmetrically provided with an intermediate product coiling machine, the outside of a scroll of the intermediate product coiling machine is provided with a coiled material heating furnace, a tension detection roll and a cooling device are arranged between the coiling machine and the rolling mill, and a high-temperature solid solution system is arranged between a finished product coiling machine and an adjacent intermediate product coiling machine, so that the production from copper blank hot rolling to copper strip hot rough rolling can be completed on the production line at one time; the four-roller rolling mill is matched with the tension detection roller to accurately control the rolling tension parameters in the copper strip rough rolling process, so that the dimensional accuracy of the copper strip after rough rolling is greatly improved; the coiled material heating furnace heats and preserves the copper strip, changes the original copper strip rough rolling process from cold rough rolling into hot rough rolling, and is matched with a high-temperature solid solution system, so that the residual stress and the microstructure of the copper strip after rough rolling are greatly improved, the problem of matching of the quality of the front-end precise copper strip and the production of the rear-end precise foil is solved, the technical blind spot of the domestic current production of the precise foil is solved, and a good foundation is laid for domestic production of the precise foil.
Drawings
FIG. 1 is a schematic structural diagram of a precision copper strip rolling production line;
FIG. 2 is a schematic view of the transmission structure of the intermediate product coiler;
FIG. 3 is a schematic view of a circumferential arrangement structure of tension detection roller pressure sensors;
FIG. 4 is a schematic view of an axial arrangement structure of a tension detection roller pressure sensor;
fig. 5 is a schematic view of a reel drive system of the intermediate product coiler.
In the figure: 1. a rolling mill; 2. an intermediate product coiler; 2.1, a frame; 2.2, intermediate product coiler reel; 2.3, a torque synthesis speed reducer; 2.3.1, a torque output shaft; 2.3.1.1, an output shaft gear; 2.3.1.2, an output shaft coupling; 2.3.1.3, a heat dissipation plate; 2.3.2, torque input shaft; 2.3.2.1, input shaft gear; 2.3.2.2, an input shaft coupling; 2.4, a magnetorheological fluid clutch; 2.5, a gearbox; 2.6, a motor; 3. a coil heating furnace; 4. a tension detection roller; 4.1, axially arranging holes on the pressure sensor; 4.2, a pressure sensor axial arrangement area; 5. a coiler guide roller; 6. a cooling device; 7. a high temperature solid solution system; 8. a butt welding device; 9. a finished product coiling machine; 10. an initial torque distribution process; 11. working torque sequencing process of the magnetorheological fluid clutch; 12. a feedback control loop process; 13. a roller furnace.
Detailed Description
The invention will be explained in more detail by the following examples, which disclose the invention and are intended to protect all technical improvements within the scope of the invention.
A precision copper plate and strip rolling production line comprises a roller way, a rolling mill 1, an intermediate product coiler 2, a coiled material heating furnace 3, a tension detection roller 4, a coiler guide roller 5, a cooling device 6, a high-temperature solid solution system 7, a butt welding device 8 and a finished product coiler 9; the rolling mill 1 comprises two pairs of working roll systems which are symmetrically arranged up and down, each working roll system comprises a working roll with the diameter of 300mm and a supporting roll with the diameter of 800mm, the supporting rolls are symmetrically arranged at the outer sides of a rolling gap of the two working rolls, and the working rolls are arranged in contact with the outer circumferential surface of the supporting roll; the rolling mill 1 is arranged at the middle section of the roller way; the two intermediate product coiling machines 2 are symmetrically arranged at two sides of the rolling mill 1 and are 12m away from the rolling mill; the coil heating furnace 3 is arranged outside a scroll 2.2 of the intermediate product coiler 2; the tension detection roller 4, the cooling device 6 and the coiler guide roller 5 are sequentially arranged between the coiler 2 and the rolling mill 1; the finished product coiling machine 9 is arranged at one end of the roller way, and the high-temperature solid solution system 7 is arranged between the finished product coiling machine 9 and the adjacent intermediate product coiling machine 2 and is close to the finished product coiling machine 9; the butt welding device 8 is arranged between the high-temperature solid solution system 7 and the finished product coiling machine 9; 1-2 roller furnaces 13 are movably arranged at one end of the precision copper plate strip rolling production line, which is far away from the finished product coiling machine 9; the inner side and the outer side of the roller furnace 13 are respectively provided with a roller way, and the bottom of the roller furnace is provided with a transverse moving device; the length of the roller furnace 13 is 20-40m, and the heating temperature range is 700-1200 ℃; the roller furnace 13 is configured with protective gases such as nitrogen, argon and the like;
the tension detection roller 4 is a solid roller with the diameter of 300mm, two groups of pressure sensors are uniformly distributed in the circumferential direction of the solid roller, the axial distance between the two groups of pressure sensors is 80mm, 20 pressure sensors are arranged in each group, the two groups of pressure sensors are symmetrically arranged in the length direction of the tension detection roller 4, and the two groups of pressure sensors are axially arranged in a roller body of the tension detection roller 4 along the tension detection roller 4;
the intermediate product coiler 2 comprises a frame 2.1, a scroll 2.2, a torque synthesis speed reducer 2.3, a magnetorheological fluid clutch 2.4, a gearbox 2.5 and a motor 2.7; the scroll 2.2 is rotationally arranged on the frame 2.1; the end part of the right side of the torque converter is fixedly connected with a torque output shaft 2.3.1 of a torque synthesis speed reducer 2.3 through a coupler; the torque synthesis speed reducer 2.3 is provided with three torque input shafts 2.3.2, the gearbox 2.5 is provided with three output shafts, the three torque input shafts 2.3.2 of the torque synthesis speed reducer 2.3 are respectively in transmission connection with the three output shafts of the gearbox 2.5 through three magnetorheological fluid clutches 2.4, wherein the torque input shaft 2.3.2 of the torque synthesis speed reducer 2.3 is in meshing connection with the torque output shaft 2.3.1 through gears, the torque synthesis speed reducer is provided with a reduction ratio of 3:1, and the maximum working torque of the magnetorheological fluid clutch 2.4 is 2.KN 0x m; the input shaft of the gearbox 2.5 is in transmission connection with the motor 2.7;
the utility model discloses rolling production line of accurate copper area adopts magnetorheological suspensions clutch 2.4 direct control spool 2.2's moment of torsion to control rolling tension, and its theory of operation is: the working torque provided by the three magnetorheological fluid clutches 2.4 arranged in the driving transmission chain of the scroll 2.2 is synthesized and amplified by the torque synthesis speed reducer 2.3 to provide driving torque for the scroll 2.2; the working torque of one magnetorheological fluid clutch 2.4 in the three magnetorheological fluid clutches 2.4 is controlled in turn by the feedback signal of the tension detection roller 4 to achieve the purpose of controlling the driving torque of the reel 2.2, thereby ensuring that the rolling tension provided by the reel 2.2 is kept constant in the hot rough rolling process of the copper strip; the working principle of the rolling tension control system solves the problems of large rotational inertia, low response speed and low control precision of the traditional rolling tension system, so that the control precision of the rolling tension in the copper strip hot rolling process can be greatly improved, and the stability of the dimensional precision of the copper strip after hot rough rolling is ensured;
when the right side end of the scroll 2.2 is connected with the torque output shaft 2.3.1 of the torque synthesis speed reducer 2.3, a heat insulation block is fixedly arranged in the middle of the coupler and used for preventing the high temperature of the scroll 2.2 from being transmitted to the torque output shaft 2.3.1 of the torque synthesis speed reducer 2.3; the end face of the right side of the coupler is also provided with a heat dissipation disc 2.3.1.3, the end face of the right side of the heat dissipation disc 2.3.1.3 is provided with heat dissipation fins, and when the torque output shaft 2.3.1 of the torque synthesis speed reducer 2.3 rotates, the heat dissipation fins of the heat dissipation disc 2.3.1.3 drive air to form heat dissipation airflow to dissipate heat of the coupler and the torque output shaft 2.3.1.
The detailed part of the utility model is the prior art.
Claims (6)
1. A precise copper plate and strip rolling production line comprises a roller way and a rolling mill (1) arranged at the middle section of the roller way; the method is characterized in that: the rolling mill (1) is of a four-roller system structure; the two sides of the rolling mill (1) are symmetrically provided with an intermediate product coiler (2), and a coil heating furnace (3) is arranged outside a scroll (2.2) of the intermediate product coiler (2); a finished product coiling machine (9) is arranged at one end of the roller way, and a high-temperature solid solution system (7) is arranged between the finished product coiling machine (9) and the adjacent intermediate product coiling machine (2); the high-temperature solid solution system (7) and the finished product coiling machine (9) are provided with butt-joint tailor-welding devices (8).
2. The precision copper plate and strip rolling line of claim 1, wherein: a plurality of magnetorheological fluid clutches (2.4) are arranged in a driving transmission chain of a reel (2.2) of the intermediate product coiler (2), a driving torque is synthesized through the plurality of magnetorheological fluid clutches (2.4) to drive the reel (2.2) to rotate, and the rolling tension output by the reel (2.2) is finally controlled through controlling the synthesized driving torque.
3. The precision copper plate and strip rolling line of claim 2, wherein: a tension detection roller (4), a cooling device (6) and a coiler guide roller (5) are arranged between the intermediate product coiler (2) and the rolling mill (1).
4. The precision copper plate and strip rolling line as set forth in claim 1, wherein: a roller furnace (13) is also movably arranged on the roller way.
5. A precision copper strip rolling line according to claim 4, wherein: the rolling mill (1) comprises two pairs of working roll systems which are symmetrically arranged up and down, each working roll system comprises a working roll and a supporting roll, and the supporting rolls are symmetrically arranged on the outer sides of rolling gaps of the two working rolls.
6. The precision copper plate and strip rolling line of claim 5, wherein: the tension detection roller (4) is a solid roller, and two groups of pressure sensors are uniformly distributed in the circumferential direction and are axially symmetrical; the pressure sensor is axially arranged in a roller body of the tension detection roller (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222867328.6U CN218361302U (en) | 2022-10-28 | 2022-10-28 | Precision copper plate and strip rolling production line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222867328.6U CN218361302U (en) | 2022-10-28 | 2022-10-28 | Precision copper plate and strip rolling production line |
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| Publication Number | Publication Date |
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| CN218361302U true CN218361302U (en) | 2023-01-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222867328.6U Active CN218361302U (en) | 2022-10-28 | 2022-10-28 | Precision copper plate and strip rolling production line |
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| CN (1) | CN218361302U (en) |
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- 2022-10-28 CN CN202222867328.6U patent/CN218361302U/en active Active
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