Double-roller continuous casting and rolling machine capable of providing continuous and stable ultrahigh rolling force
By using a double -roller continuous and rolling machine and hydraulic control system in the production of copper -aluminum composite boards, the problem of difficulty removing oxides of copper and aluminum interfaces in traditional methods, and realizing high -intensity, thin and thick copper aluminum composite plate production.
Patent Information
- Application Number
- CN202421143376.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-24
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-05-24
AI Technical Summary
The existing technology has the problem that copper and aluminum surface oxides are difficult to completely remove when producing copper and aluminum composite plates, resulting in the diffusion of interface atoms. The composite plate produced by the traditional synchronous casting and rolling method is thicker in thickness, coarse grains, and comprehensive performance. Low.
The dual roller continuously cast rolling machine is used to achieve accurate control of upper pressure rollers and lower pressure rollers through the hydraulic control system to ensure stable high pressure during the casting process, reduce the formation of oxides, and improve the efficiency of cast rolling.
The ultra -high -rolling system that maintains continuous and stable in the process of casting and rolling, reducing the formation of oxides, improving the combination strength and performance of copper and aluminum composite plates, and the thickness of the plates produced is thinner and the grains are thinner.
Smart Images
Figure CN222402778U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of composite metal casting and rolling, and in particular relates to a double-roller continuous casting and rolling machine which can provide continuous, stable and ultra-high rolling force. Background Art
[0002] Sheets are the most widely used metal materials. After being processed through various processing techniques, various machine parts, metal structural parts and equipment can be obtained. The supply of metal as an intermediate product in the form of sheets greatly simplifies the production process of deep processing of metal materials, reduces production costs and expands the application scope of metal materials.
[0003] Metal sheets are generally produced by hot rolling or cold rolling after melting ingots. Materials that are difficult to deform can also be obtained by extrusion. The production cost of metal sheets produced by the above methods, especially thin sheets, is high. For some materials, such as magnesium alloys, the production process of the above process is very complicated, the production cycle is very long, and the production cost is high.
[0004] Due to its high strength, high electrical conductivity and good thermal conductivity, copper has always been the preferred material for electrical and thermal conductors and has been widely used in electrical appliances, cables and other industries. However, the price of copper is relatively high, currently about 70,000-80,000 yuan / ton, which limits its application. At the same time, my country is short of copper resources. The proven copper reserves account for only about 5% of the world's total, while the consumption accounts for 60% of the world's total, and it is heavily dependent on imports. Aluminum has become the preferred material to replace copper due to its low price (about 20-30% of copper), light weight (about one-third of copper), strong corrosion resistance and high output. The production of copper-aluminum composite materials has achieved the goal of "saving copper with aluminum", alleviated the current situation of copper resource scarcity, and is fully in line with the development concept of maximizing resource utilization and optimizing performance. The main preparation processes of copper-aluminum layered composite materials include explosive composite method, die casting method, cold rolling + diffusion composite method, core filling continuous casting composite method, casting and rolling method, etc. The explosive composite method and die casting method are suitable for preparing thick composite plates, and the size of the composite plates is also limited, and strips cannot be prepared; the composite plates and strips produced by the cold rolling + diffusion composite method are thicker, and the aluminum layer has coarse grains and low comprehensive performance; the core filling continuous casting composite method is suitable for preparing copper-clad aluminum composite bars, and copper-aluminum layered composite materials cannot be directly prepared; at present, the production of copper-aluminum composite plates and strips by traditional synchronous casting and rolling method also has some disadvantages: the surface oxides of copper and aluminum are difficult to completely remove, and are distributed at the copper-aluminum interface, which hinders the diffusion of interface atoms. The bonding strength of the composite plate is ensured by increasing the thickness of the cladding aluminum, and the thickness of the prepared composite plate is thicker. The thickness of the prepared copper-aluminum composite plate is 5 to 20 mm, and the grains are coarse. Utility Model Content
[0005] The utility model provides a double-roller continuous casting and rolling machine which can provide a continuous, stable and ultra-high rolling force.
[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0007] A twin-roll continuous casting and rolling machine that can provide continuous, stable and ultra-high rolling force comprises two parallel supporting plates, the upper ends of the two supporting plates are fixedly connected by a cross beam, an upper pressure roller and a lower pressure roller are arranged between the two supporting plates, both ends of the upper pressure roller and the lower pressure roller are mounted on mounting frames, the mounting frames at both ends of the lower pressure roller are mounted on the supporting plates, the mounting frames at both ends of the upper pressure roller are connected to the connecting frame, a first pressing cylinder is arranged on the upper end of the connecting frame at one end of the upper pressure roller, and a second pressing cylinder is arranged on the upper end of the connecting frame at the other end of the upper pressure roller, the connecting frame comprises a fixing plate, a plurality of connecting bolts are arranged on the fixing plate, the lower ends of the connecting bolts are fixedly connected to a connecting pin shaft, the connecting pin shaft is mounted on the connecting plate, the connecting plate is fixed on the mounting frame, and the cylinder is connected to a hydraulic control system.
[0008] Furthermore, the hydraulic control system includes two oil cylinders, a rapid lifting unit, a pressure holding unit and an electronic control system; the oil cylinder is connected to the rapid lifting unit and the pressure holding unit respectively; the rapid lifting unit includes a hydraulic source P1, a stacked pressure reducing valve and an electromagnetic reversing valve which are connected in sequence by a hydraulic oil circuit, one of the interfaces of the electromagnetic reversing valve is connected to an oil inlet and outlet of the oil cylinder correspondingly through a hydraulic oil circuit, and another interface of the electromagnetic reversing valve is connected to a stacked one-way throttle valve and a hydraulically controlled one-way valve in sequence through a hydraulic oil circuit; the stacked pressure reducing valve is connected to a hydraulic oil circuit. The hydraulic oil circuit is connected to an oil return port T1; the pressure maintaining unit comprises a hydraulic source P2, a high-pressure oil filter, a proportional pressure reducing valve and an electromagnetic ball valve which are sequentially connected by the hydraulic oil circuit; the electromagnetic ball valve is correspondingly connected to another oil inlet and outlet of the oil cylinder; a pressure sensor is provided in the oil circuit between the electromagnetic ball valve and the oil cylinder; the oil circuit between the electromagnetic ball valve and the oil cylinder is correspondingly connected to an end of the hydraulic control one-way valve away from the one-way throttle valve; the electronic control system is correspondingly controlled and connected to the electromagnetic ball valve, the pressure sensor, the proportional pressure reducing valve, the electromagnetic reversing valve and the oil pump motors of the hydraulic source P1 and the hydraulic source P2.
[0009] Furthermore, the proportional pressure reducing valve is connected to an oil return port T2 via a hydraulic oil circuit.
[0010] Furthermore, the filtering accuracy of the high-pressure oil filter is 3 μm.
[0011] Furthermore, the electric control system is provided with an audible and visual alarm.
[0012] Furthermore, the hydraulic source P1 is a normal pressure oil source, and the hydraulic source P2 is a high pressure oil source.
[0013] Furthermore, the electromagnetic ball valve and the hydraulically controlled one-way valve are both zero-leakage valve components.
[0014] Furthermore, the lower end of each support plate is fixedly connected to the base, and a positioning plate is provided at the connection between the support plate and the base.
[0015] Furthermore, the support plate and the base are fixed together by fixing bolts.
[0016] Furthermore, the ends of the upper pressure roller and the lower pressure roller are provided with holding roller assemblies.
[0017] Furthermore, the mounting frames at both ends of the lower pressure roller are provided with roller cylinders, and the roller cylinders are also connected to the hydraulic control system.
[0018] Furthermore, the upper pressure roller or the lower pressure roller is equipped with a cleaning roller assembly.
[0019] Furthermore, one end of the upper pressing roller or the lower pressing roller is provided with a driving assembly, and the other end of the upper pressing roller or the lower pressing roller is connected to a cooling system.
[0020] Furthermore, a hanging foot is fixed to the upper end of the oil cylinder, and the hanging foot is fixed on the support plate.
[0021] Furthermore, an outlet roller is installed between the two support plates, and the outlet roller is arranged on one side of the upper pressure roller and the lower pressure roller.
[0022] The utility model realizes the control of the upper pressure roller and the lower pressure roller through the hydraulic control system, which facilitates the pressure maintenance and adjustment of the upper pressure roller and the lower pressure roller during casting and rolling. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 It is the front view of the utility model;
[0024] Figure 2 It is a right side view of the utility model;
[0025] Figure 3 It is a schematic diagram of the hydraulic control system in the utility model.
[0026] Explanation of the reference numerals: 1—oil cylinder, 2—electromagnetic reversing valve, 3—superimposed pressure reducing valve, 4—superimposed one-way throttle valve, 5—hydraulic controlled one-way valve, 6—electromagnetic ball valve, 7—high-pressure oil filter, 8—proportional pressure reducing valve, 9—pressure sensor, 10—base, 11—positioning plate, 12—fixing bolt, 13—roller cylinder, 14—roll holding assembly, 15—lower pressure roller, 16—upper pressure roller, 17—pressing cylinder one, 18—hanging foot, 19—roll cleaning assembly, 20—pressing cylinder two, 21—crossbeam, 22—driving assembly, 23—exit roller, 24—mounting frame, 25—fixing plate, 26—connecting bolt, 27—connecting plate, 28—support plate. DETAILED DESCRIPTION
[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.
[0028] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.
[0029] Reference Figure 1 , Figure 2 A twin-roll continuous casting and rolling mill which can provide a continuous and stable ultra-high rolling force comprises two support plates 28 arranged in parallel, the upper ends of the two support plates 28 are fixedly connected by a crossbeam 21, an upper pressure roller 16 and a lower pressure roller 15 are arranged between the two support plates 28, both ends of the upper pressure roller 16 and the lower pressure roller 15 are mounted on a mounting frame 24, the mounting frames 24 at both ends of the lower pressure roller 15 are mounted on the support plate 28, the mounting frames 24 at both ends of the upper pressure roller 16 are connected to a connecting frame, a pressing cylinder 17 is arranged on the upper end of the connecting frame at one end of the upper pressure roller 16, and a pressing cylinder 20 is arranged on the upper end of the connecting frame at the other end of the upper pressure roller 16, the connecting frame comprises a fixing plate 25, a plurality of connecting bolts 26 are arranged on the fixing plate 25, the lower ends of the connecting bolts 26 are fixedly connected to a connecting pin, the connecting pin is mounted on a connecting plate 27, and the connecting plate 27 is fixed to the mounting frame 2 4, the pressing cylinder 17 and the pressing cylinder 20 are both connected to the hydraulic control system, the lower end of each support plate 28 is fixedly connected to the base 10, and a positioning plate 11 is provided at the connection between the support plate 28 and the base 10, and the support plate 28 and the base 10 are fixed together by fixing bolts 12, and the ends of the upper pressure roller 16 and the lower pressure roller 15 are provided with a holding roller assembly 14, and the mounting frames 24 at both ends of the lower pressure roller 15 are provided with roller cylinders 13, and the roller cylinders 13 are also connected to the hydraulic control system, and the upper pressure roller 16 or the lower pressure roller 15 is equipped with a cleaning roller assembly 19, and one end of the upper pressure roller 16 or the lower pressure roller 15 is provided with a driving assembly 22, and the other end of the upper pressure roller 16 or the lower pressure roller 15 is connected to the cooling system, and the upper end of the pressing cylinder 17 or the pressing cylinder 20 is fixed with a hanging foot 18, and the hanging foot 18 is fixed on the support plate 28. An outlet roller 23 is arranged between the two support plates 28, and the outlet roller 23 is arranged on one side of the upper pressure roller 16 and the lower pressure roller 15, as shown in a top view.
[0030] Reference Figure 3The hydraulic control system includes two oil cylinders, and also includes a fast lifting unit, a pressure holding unit and an electronic control system as marked in the figure; the oil cylinder is connected to the fast lifting unit and the pressure holding unit correspondingly; the fast lifting unit includes a hydraulic source P1, a stacking pressure reducing valve 3 and an electromagnetic reversing valve 2 which are connected in sequence by a hydraulic oil circuit, one of the interfaces of the electromagnetic reversing valve 2 is connected to an oil inlet and outlet of the oil cylinder correspondingly through a hydraulic oil circuit, and the other interface of the electromagnetic reversing valve 2 is connected to a stacking one-way throttle valve 4 and a hydraulically controlled one-way valve 5 in sequence through a hydraulic oil circuit; the stacking pressure reducing valve 4 is connected to a hydraulic oil circuit through a hydraulic oil circuit. The pressure-maintaining unit includes a hydraulic source P2, a high-pressure oil filter 7, a proportional pressure reducing valve 8 and an electromagnetic ball valve 6 which are connected in sequence by a hydraulic oil circuit. The electromagnetic ball valve 6 is correspondingly connected to another oil inlet and outlet of the oil cylinder. The oil circuit between the electromagnetic ball valve 6 and the oil cylinder is provided with a pressure sensor 9. The oil circuit between the electromagnetic ball valve 6 and the oil cylinder is correspondingly connected to one end of the hydraulic control check valve 5 away from the one-way throttle valve. The electronic control system is correspondingly controlled and connected with the electromagnetic ball valve 6, the pressure sensor 9, the proportional pressure reducing valve 8, the electromagnetic reversing valve 2 and the oil pump motors of the hydraulic source P1 and the hydraulic source P2. The proportional pressure reducing valve 8 is connected to the oil return port T2 through the hydraulic oil circuit. The filtration accuracy of the high-pressure oil filter 7 is 3μm. The electronic control system is provided with an audible and visual alarm. The hydraulic source P1 is a general pressure oil source, and the hydraulic source P2 is a high-pressure oil source. The electromagnetic ball valve 6 and the hydraulic control check valve 5 are both zero-leakage valves.
[0031] The pressure-maintaining unit comprises a hydraulic source P2, a high-pressure oil filter 7, a proportional pressure-reducing valve 8 and an electromagnetic ball valve 6 which are sequentially connected by a hydraulic oil circuit. The electromagnetic ball valve 6 is correspondingly connected to another oil inlet and outlet of the oil cylinder. A pressure sensor 9 is provided in the oil circuit between the electromagnetic ball valve 6 and the oil cylinder. The oil circuit between the electromagnetic ball valve 6 and the oil cylinder is correspondingly connected to an end of the hydraulically controlled one-way valve 5 away from the one-way throttle valve 4. As required, the proportional pressure-reducing valve 8 is connected to an oil return port T2 through the hydraulic oil circuit, that is, the hydraulic oil circuit is provided with two oil return ports T1 and T2, and T2 is connected to the oil unloading port of the proportional pressure-reducing valve 8, which can effectively reduce the influence of the return oil back pressure on the pressure reduction effect when the proportional pressure-reducing valve 8 is unloading oil. The electronic control system is connected with the electromagnetic ball valve 6, the pressure sensor 9, the proportional pressure reducing valve 8, the electromagnetic reversing valve 2 and the oil pump motors of the hydraulic source P1 and the hydraulic source P2 in a corresponding control manner; as needed, the hydraulic source P1 is a general pressure oil source, and the hydraulic source P2 is a high pressure oil source, that is, when it is necessary to adjust the pressure of the oil cylinders on both sides of the casting and rolling mill, the hydraulic source P2 can be started to output the pressure P2, and the hydraulic oil enters the high pressure oil filter 7 of the two pressure maintaining units respectively, and the electronic control system controls the two electromagnetic ball valves 6 to be energized and opened, and the electromagnetic reversing valve 2 is not energized, so that the oil cylinder rises, and at the same time, the two pressure sensors 9 respectively detect the pressure of the two oil cylinders and feed it back to the electronic control system, and the operator can It can output 4-20mA electrical signal to two proportional pressure reducing valves 8 through potentiometer, and then adjust the pressure of two pressing cylinders. The pressure can be increased or decreased. When the set value is reached, the two electromagnetic ball valves 6 lose power, and the cylinder starts to maintain pressure at the same time. The hydraulic source P1 stops running after 20 seconds. During the pressure-maintaining rolling process, when the pressure sensor 9 detects that the pressure of the cylinder is lower than the set value, the electronic control system controls the hydraulic source P1 to start automatically, and gives an electrical signal to the proportional pressure reducing valve 8. At the same time, the electromagnetic ball valve 6 is energized, and the proportional pressure reducing valve 8 is activated to supplement the pressure of the corresponding cylinder to the set range. Then the electromagnetic ball valve 6 loses power, the cylinder starts to maintain pressure again, and the hydraulic source P1 stops running after 20 seconds. When it is necessary to adjust the oil cylinders on both sides of the casting and rolling mill to rise or fall quickly, the hydraulic source P1 is started, the output pressure P1, the electromagnetic ball valve 6 loses power, and the electromagnetic reversing valve 2 is energized to make the corresponding oil cylinder rise or fall quickly; in addition, the filtration accuracy of the high-pressure oil filter 7 is 3μm, which can effectively ensure the normal operation of the proportional pressure reducing valve 8 and extend its service life; the electronic control system is equipped with an audible and visual alarm. When the pressure sensor 9 detects that the pressure of the oil cylinder is not within the set range, the alarm is started to remind the operator so that the operator can make corresponding adjustments in time; the electromagnetic ball valve 6 and the hydraulically controlled one-way valve 5 are both zero-leakage valves, which can play a key role in maintaining pressure.
[0032] When it is necessary to adjust the pressure of the oil cylinders on both sides of the casting and rolling mill, the hydraulic source P2 can be started to output pressure P2, and the hydraulic oil enters the high-pressure oil filter 7 of the two pressure-maintaining units respectively. The electronic control system controls the two electromagnetic ball valves 6 to be energized and opened, and the electromagnetic reversing valve 2 is de-energized, so that the oil cylinder rises. At the same time, the two pressure sensors 9 respectively detect the pressure of the two oil cylinders and feed it back to the electronic control system. The operator can output a 4-20mA electrical signal to the two proportional pressure reducing valves 8 through the potentiometer, and then adjust the pressure of the two oil cylinders. The pressure can rise or fall. When the set value is reached, the two electromagnetic ball valves 6 lose power, and the oil cylinder starts to maintain pressure. The hydraulic source P1 stops after running for 20 seconds; during the pressure-maintaining rolling process, when the pressure sensor 9 detects that the pressure of the cylinder is lower than the set value, the electronic control system controls the hydraulic source P1 to start automatically, and gives an electrical signal to the proportional pressure reducing valve 8, and at the same time, the electromagnetic ball valve 6 is energized, the proportional pressure reducing valve 8 is activated, and the pressure of the corresponding cylinder is replenished to the set range, and then the electromagnetic ball valve 6 is de-energized, the cylinder starts to maintain pressure again, and the hydraulic source P1 stops after running for 20 seconds; when it is necessary to adjust the cylinders on both sides of the casting and rolling mill to rise or fall quickly, the hydraulic source P1 is started, the output pressure P1, the electromagnetic ball valve 6 is de-energized, and the electromagnetic reversing valve 2 is energized to make the corresponding cylinder rise or fall quickly.
[0033] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A twin-roll continuous casting mill capable of providing a sustained, stable and ultra-high rolling force, characterized in that: The invention comprises two supporting plates arranged in parallel, the upper ends of the two supporting plates are fixedly connected by a cross beam, an upper pressure roller and a lower pressure roller are arranged between the two supporting plates, both ends of the upper pressure roller and the lower pressure roller are mounted on a mounting frame, the mounting frames at both ends of the lower pressure roller are mounted on the supporting plate, the mounting frames at both ends of the upper pressure roller are connected to a connecting frame, a first pressing cylinder is arranged on the upper end of the connecting frame at one end of the upper pressure roller, and a second pressing cylinder is arranged on the upper end of the connecting frame at the other end of the upper pressure roller, the connecting frame comprises a fixing plate, a plurality of connecting bolts are arranged on the fixing plate, the lower ends of the connecting bolts are fixedly connected to a connecting pin shaft, the connecting pin shaft is mounted on the connecting plate, the connecting plate is fixed on the mounting frame, and the cylinder is connected to a hydraulic control system.
2. A twin-roll continuous casting and rolling mill capable of providing a sustained, stable and ultra-high rolling force according to claim 1, characterized in that: The hydraulic control system includes two oil cylinders, a rapid lifting unit, a pressure holding unit and an electronic control system; the oil cylinder is connected to the rapid lifting unit and the pressure holding unit respectively; the rapid lifting unit includes a hydraulic source P1, a stacked pressure reducing valve and an electromagnetic reversing valve which are connected in sequence by a hydraulic oil circuit, one of the interfaces of the electromagnetic reversing valve is connected to an oil inlet and outlet of the oil cylinder via a hydraulic oil circuit, and the other interface of the electromagnetic reversing valve is connected to a stacked one-way throttle valve and a hydraulically controlled one-way valve in sequence via a hydraulic oil circuit; the stacked pressure reducing valve is connected to the hydraulic oil circuit via a hydraulic oil circuit. It is connected with an oil return port T1; the pressure maintaining unit comprises a hydraulic source P2, a high-pressure oil filter, a proportional pressure reducing valve and an electromagnetic ball valve which are connected in sequence by a hydraulic oil circuit; the electromagnetic ball valve is correspondingly connected with another oil inlet and outlet of the oil cylinder; a pressure sensor is provided in the oil circuit between the electromagnetic ball valve and the oil cylinder; the oil circuit between the electromagnetic ball valve and the oil cylinder is correspondingly connected with an end of the hydraulic control one-way valve away from the one-way throttle valve; the electronic control system is correspondingly controlled and connected with the electromagnetic ball valve, the pressure sensor, the proportional pressure reducing valve, the electromagnetic reversing valve and the oil pump motor of the hydraulic source P1 and the hydraulic source P2.
3. A twin-roll continuous casting and rolling machine capable of providing a continuous, stable and ultra-high rolling force according to claim 2, characterized in that: The proportional pressure reducing valve is connected to an oil return port T2 via a hydraulic oil circuit.
4. A twin-roll continuous casting and rolling machine capable of providing a continuous, stable and ultra-high rolling force according to claim 2, characterized in that: The filtering accuracy of the high-pressure oil filter is 3 μm.
5. The twin-roll continuous casting and rolling mill capable of providing a continuous, stable and ultra-high rolling force according to claim 2, characterized in that: The electric control system is provided with an audible and visual alarm.
6. The twin-roll continuous casting and rolling mill capable of providing a continuous, stable and ultra-high rolling force according to claim 1, characterized in that: The lower end of each support plate is fixedly connected to the base, and a positioning plate is provided at the connection between the support plate and the base.
7. The twin-roll continuous casting and rolling mill capable of providing a continuous, stable and ultra-high rolling force according to claim 1, characterized in that: The support plate and the base are fixed together by fixing bolts.
8. The twin-roll continuous casting and rolling mill capable of providing a continuous, stable and ultra-high rolling force according to claim 1, characterized in that: The ends of the upper pressing roller and the lower pressing roller are provided with holding roller assemblies.
9. The twin-roll continuous casting and rolling mill capable of providing a continuous, stable and ultra-high rolling force according to claim 1, characterized in that: The mounting frames at both ends of the lower pressure roller are provided with roller cylinders, and the roller cylinders are also connected to the hydraulic control system.
10. The twin-roll continuous casting and rolling mill capable of providing a continuous, stable and ultra-high rolling force according to claim 1, characterized in that: The upper pressing roller or the lower pressing roller is equipped with a roller cleaning assembly.