Aluminum alloy electronic board processing method and equipment
By employing a continuous processing step involving multiple rolling, cutting, and straightening passes, combined with optimized rolling oil and equipment design, the high energy consumption and poor flatness issues in traditional aluminum alloy electronic board manufacturing have been resolved. This process achieves low energy consumption, high yield, and high flatness, making it suitable for the production of aluminum alloy electronic boards.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-24
- Publication Date
- 2026-03-17
AI Technical Summary
Traditional methods for manufacturing aluminum alloy electronic boards suffer from high energy consumption and poor flatness, resulting in low production efficiency and low yield, making it difficult to meet the requirements of high-end electronic devices.
The process employs a continuous multi-pass rolling, cutting, and straightening process, combined with rolling oil containing 6%-8% alcohol and aluminum alloy electronic board processing equipment. Precise straightening is achieved by adjusting the distance between the movable roll and the support roll, thus optimizing the rolling and straightening process.
It achieves low energy consumption, high yield, and high flatness in aluminum alloy electronic board processing, reducing energy consumption and production costs, improving production efficiency and product quality, and meeting green processing requirements.
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Figure CN121669737A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of aluminum alloy electronic plate processing, in particular to an aluminum alloy electronic plate processing method and device. BACKGROUND
[0002] With the development of electronic equipment towards lightness and high-end, the downstream market continuously improves the quality requirements of aluminum alloy electronic plates, and the industry competition is increasingly fierce. Reducing production energy consumption, improving yield and production efficiency has become the key to improving product competitiveness.
[0003] However, the traditional preparation method of aluminum alloy electronic plate has the following outstanding problems: High energy consumption: In order to avoid poor plate shape, the traditional production adopts a production mode of small processing rate and multiple rolling passes, which usually requires multiple rolling passes, resulting in long rolling mill running time, high energy consumption and serious energy waste. In addition, the auxiliary process is complicated, which further increases the energy consumption cost.
[0004] Poor flatness: The traditional production only relies on the stretching straightening process, and the straightening ability of the plate with poor plate shape is limited. The internal stress of the strip cannot be completely released during the stretching process, which is easy to cause plate shape rebound, resulting in product warping degree about 0.3%, edge wave height 0.5-1mm, and flatness difficult to meet the use requirements of high-end electronic equipment.
[0005] Therefore, it is urgent to develop a processing method and device of aluminum alloy electronic plate which can realize "short process, low energy consumption, high yield, high flatness" at the same time. SUMMARY
[0006] In order to solve the above problems, the present application provides an aluminum alloy electronic plate processing method and device.
[0007] In a first aspect, the present application provides an aluminum alloy electronic plate processing method, which adopts the following technical scheme: An aluminum alloy electronic plate processing method, comprising the following steps: Rolling, using a rolling mill to roll the aluminum alloy coil with an initial thickness in multiple passes to roll the aluminum alloy coil to a target thickness; Cutting, cutting the aluminum alloy coil according to the target width; Straightening, straightening the aluminum alloy coil.
[0008] By adopting the technical scheme, the aluminum alloy coiled material is processed through the continuous processing steps of rolling, cutting and straightening; in the rolling step, the aluminum alloy coiled material with an initial thickness is rolled through multiple passes by using a rolling machine, so that the thickness of the aluminum alloy coiled material can be accurately controlled to reach the target thickness required by the electronic board, thereby meeting the strict requirement of the electronic board on the thickness accuracy of the base material and facilitating the installation of subsequent electronic components and the circuit layout; the multiple-pass rolling can also improve the plate shape and surface quality of the aluminum alloy material, such as improving the tensile strength and hardness, and enhancing the structural stability and service life of the aluminum alloy electronic board; in the straightening processing step, the deformation defects such as bending and warping of the aluminum alloy coiled material generated in the rolling process can be effectively eliminated, so that the flatness of the aluminum alloy coiled material can reach the processing standard of the electronic board, thereby avoiding errors in subsequent processing procedures due to insufficient flatness of the base material and ensuring the processing accuracy of the electronic board product. In the cutting processing step, the waste edge amount of the straightened coiled material is small, and the yield is high; the coiled material can meet the product requirements through one-time cutting, thereby reducing the thick foil shearing process compared with the existing process, reducing energy consumption and improving production efficiency.
[0009] Optionally, in the rolling step, rolling oil is added to the surface of the aluminum alloy coiled material, and the alcohol content in the rolling oil is 6%-8%.
[0010] By adopting the technical scheme, the rolling oil has excellent lubricating performance, can form a stable lubricating film between the rolling roll of the rolling machine and the surface of the aluminum alloy coiled material, significantly reduce the friction coefficient between them, reduce the friction resistance in the rolling process, not only reduce the energy consumption of the rolling machine, but also reduce the wear of the rolling roll, prolong the service life of the rolling roll, reduce the equipment maintenance cost, and the rolling oil has good cooling effect, can timely take away the heat generated by the contact between the rolling roll and the aluminum alloy coiled material in the rolling process, effectively control the temperature of the aluminum alloy coiled material, avoid the problems of poor plate shape and surface of the aluminum alloy material caused by high temperature, and ensure the stability of the plate shape, surface quality and processing accuracy of the aluminum alloy coiled material.
[0011] The alcohol content of 6%-8% makes the rolling oil have appropriate adhesion and volatility on the surface of the aluminum alloy coiled material, which can not only ensure the continuous lubricating and cooling effect in the rolling process, but also facilitate the subsequent cleaning process after the rolling is completed, reduce the influence of the residual rolling oil on the surface quality of the aluminum alloy coiled material, avoid the interference of the residual rolling oil with the subsequent cutting, straightening and other processing procedures, and reduce the pollution risk to the environment, thereby meeting the requirements of green processing.
[0012] Optionally, in the rolling step, the rolling speed of the aluminum alloy coiled material is 331-880 mpm.
[0013] By adopting the technical scheme, the rolling speed range is adapted to the multi-pass rolling process, the rolling efficiency of the aluminum alloy coiled material can be significantly improved under the premise of ensuring the processing quality, the processing cycle is shortened, the demand of large-scale industrial production is met, and the production efficiency of the enterprise is improved; the speed range can effectively control the deformation rate of the aluminum alloy coiled material in the rolling process, avoid the defects such as local excessive deformation and cracking of the aluminum alloy coiled material caused by too fast rolling speed, and also prevent problems such as low production efficiency, energy waste, and abnormal temperature change of the aluminum alloy coiled material in the rolling process caused by too long residence time. By accurately controlling the rolling speed, the thickness uniformity and surface quality of the aluminum alloy coiled material after each pass rolling can be ensured, a high-quality processing base material is provided for subsequent cutting and straightening processes, and the quality of the final product of the aluminum alloy electronic board is further ensured.
[0014] Optionally, the rolling force on the aluminum alloy coiled material in the rolling step is 230-865T.
[0015] By adopting the technical scheme, the rolling force can ensure that the rolling mill applies sufficient pressure to the aluminum alloy coiled material, so that the aluminum alloy coiled material gradually reaches the target thickness in the multi-pass rolling process, ensures the accuracy and stability of thickness control, avoids the influence of the electronic board base material caused by the inability to reach the expected thickness or the thickness deviation being too large due to insufficient rolling force; when the aluminum alloy coiled material is rolled in the force range, the thickness rolling is realized, and defects such as excessive deformation, internal organization damage, and surface indentation of the aluminum alloy coiled material caused by excessive rolling force are avoided, and low rolling efficiency caused by too small rolling force is also prevented. By reasonably setting the rolling force, the density and plate shape of the material, and the surface quality can be improved, a better base material is provided for the aluminum alloy electronic board, and the structural strength and reliability of the electronic board are enhanced.
[0016] In a second aspect, the application provides an aluminum alloy electronic board processing equipment, which adopts the following technical scheme: An aluminum alloy electronic board processing equipment includes a frame body, a plurality of support rollers are rotatably connected to the frame body, and a movable roller is movably connected to the frame body. The plurality of support rollers are arranged parallel to each other, and the plurality of support rollers are parallel to the movable roller.
[0017] By adopting the above technical solution, the distance between the movable roller and several support rollers is adjusted before straightening. During straightening, the aluminum alloy coil maintains uniform contact with the movable roller and several support rollers, ensuring a uniform distribution of straightening force on the coil. This avoids uneven local stress on the coil due to non-parallel rollers, which could lead to incomplete straightening or new deformation defects. Workers can adjust the relative position between the movable roller and support rollers according to the thickness, curvature, and other actual conditions of the aluminum alloy coil, thereby changing the magnitude and mode of application of the straightening force. This allows for precise straightening of aluminum alloy coils of different specifications and degrees of deformation, improving the equipment's versatility and applicability, and meeting diverse processing needs.
[0018] Optionally, two support rollers are provided, with the movable roller located between the two support rollers.
[0019] By adopting the above technical solutions, the running trajectory of aluminum alloy coils during the straightening process can be made more stable, reducing the offset and shaking of the coils in the equipment, avoiding straightening deviations caused by coil position offsets, further ensuring the accuracy and stability of the straightening process, and also reducing the risk of edge collisions and damage to the coils during the straightening process, thereby improving the product qualification rate.
[0020] Optionally, cylinders are provided at both ends of the frame along its length, with the piston rods of the cylinders positioned vertically downwards, and the piston rods of the two cylinders are respectively connected to both ends of the movable roller along its length.
[0021] By adopting the above technical solution, the position of the movable roller can be adjusted conveniently using a cylinder. The cylinder-driven method features fast response and stable driving force. Operators can precisely adjust the extension and retraction of the piston rod by controlling the air intake and pressure of the cylinder, thereby achieving precise adjustment of the movable roller's vertical position. This ensures that the distance between the movable roller and the support roller can accurately adapt to aluminum alloy sheets of different thicknesses, and that the straightening force can be precisely controlled according to the sheet deformation, further improving the accuracy and controllability of the straightening process.
[0022] Optionally, the diameter of the movable roller is smaller than the diameter of the support roller.
[0023] By adopting the above technical solution, the smaller diameter movable roller can form a smaller contact arc surface when in contact with the aluminum alloy sheet, making the straightening force of the movable roller on the sheet more concentrated. This results in more precise correction of localized minor bends and wavy deformations on the sheet surface, further improving the surface flatness and straightening accuracy of the aluminum alloy sheet, meeting the high surface quality requirements of electronic boards. The smaller diameter of the movable roller also results in a lighter weight, requiring less driving force when adjusting its position via cylinder, reducing the cylinder load, extending cylinder life, and making the adjustment of the movable roller more flexible and energy-efficient. Furthermore, the smaller diameter movable roller occupies less space within the equipment, facilitating a more compact overall design, reducing the equipment's footprint, lowering production site costs, and simplifying installation, commissioning, and maintenance. Different roller diameters allow for better straightening effects by applying different bending radii to the strip.
[0024] In summary, this application includes at least one of the following beneficial technical effects: The aluminum alloy coil is systematically processed through continuous steps of rolling, cutting, and straightening. In the rolling stage, the initial thickness of the aluminum alloy coil is rolled in multiple passes using a rolling mill, allowing for precise control of the coil's thickness to meet the target thickness required by electronic boards. This satisfies the stringent requirements of electronic boards for substrate thickness accuracy, facilitating subsequent installation of electronic components and circuit layout. Multiple rolling passes also improve the shape and surface quality of the aluminum alloy material, such as increasing tensile strength and hardness, enhancing the structural stability and service life of the aluminum alloy electronic board. The straightening process effectively eliminates deformation defects such as bending and warping generated during rolling, ensuring the flatness of the aluminum alloy coil meets electronic board processing standards. This prevents errors in subsequent processing steps due to insufficient substrate flatness, guaranteeing the processing accuracy of the electronic board products. 1. In the cutting process, the straightened roll material has less waste and a higher yield. It can meet the finished product requirements with one cut. Compared with the existing process, it reduces the thick foil cutting process, reduces energy consumption and improves production efficiency. 2. Rolling oil possesses excellent lubricating properties, forming a stable lubricating film on the surface of the rolling mill rolls and the aluminum alloy coil. This significantly reduces the coefficient of friction between the two, decreasing frictional resistance during rolling. This not only reduces the energy consumption of the rolling mill but also mitigates roll wear, extends roll life, and lowers equipment maintenance costs. Furthermore, rolling oil has excellent cooling properties, effectively removing heat generated during rolling and controlling the temperature of the aluminum alloy coil. This prevents problems such as poor sheet shape and surface defects caused by excessive temperature, ensuring stable sheet shape, surface quality, and processing accuracy of the aluminum alloy coil. The 6%-8% alcohol content provides suitable adhesion and volatility on the aluminum alloy coil surface, ensuring continuous lubrication and cooling during rolling while facilitating subsequent cleaning after rolling. This reduces the impact of residual rolling oil on the surface quality of the aluminum alloy coil, prevents residual rolling oil from interfering with subsequent cutting, straightening, and other processing steps, and reduces environmental pollution risks, meeting the requirements of green processing. 3. Before straightening, adjust the distance between the movable roller and the support rollers. During straightening, the aluminum alloy coil should maintain uniform contact with the movable roller and the support rollers to ensure a uniform distribution of straightening force on the coil. This avoids uneven stress on the coil due to non-parallel rollers, which could lead to incomplete straightening or new deformation defects. Operators can adjust the relative positions of the movable roller and support rollers according to the thickness and curvature of the aluminum alloy coil, thereby changing the magnitude and mode of application of the straightening force. This allows for precise straightening of aluminum alloy coils of different specifications and degrees of deformation, improving the equipment's versatility and applicability to meet diverse processing needs. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of the overall structure of an aluminum alloy electronic board processing equipment.
[0026] Figure 2 This is a schematic diagram of a movable roller in an aluminum alloy electronic board processing equipment.
[0027] Explanation of reference numerals in the attached diagram: 1. Frame; 2. Support roller; 3. Movable roller; 31. Cylinder. Detailed Implementation
[0028] The present application will be further described in detail below with reference to all the accompanying drawings.
[0029] This application discloses a method for processing aluminum alloy electronic boards.
[0030] Reference Figure 1 A method for processing aluminum alloy electronic boards includes the following steps: Rolling involves rolling an aluminum alloy coil of initial thickness in multiple passes using a rolling mill. The rolling speed is 331-880 mpm and the rolling force is 230-865 T. During the rolling process, rolling oil is added to the surface of the aluminum alloy coil. The alcohol content in the rolling oil is 6%-8%. The aluminum alloy coil is rolled to the target thickness. Cutting: Cutting aluminum alloy coils to the target width.
[0031] Straightening: Straightening treatment of aluminum alloy coils; The aluminum alloy coil is systematically processed through continuous steps of rolling, cutting, and straightening. In the rolling stage, the aluminum alloy coil with an initial thickness is rolled in multiple passes using a rolling mill. This allows for precise control of the coil's thickness, ensuring it reaches the target thickness required by the electronic board and meeting the stringent requirements for substrate thickness accuracy. This facilitates the subsequent installation of electronic components and circuit layout. Multiple rolling passes also improve the shape and surface quality of the aluminum alloy material, such as increasing tensile strength and hardness, thereby enhancing the structural stability and service life of the aluminum alloy electronic board. The straightening process effectively eliminates deformation defects such as bending and warping caused by the rolling process, ensuring the flatness of the aluminum alloy coil meets the processing standards for electronic boards. This prevents errors in subsequent processing steps due to insufficient substrate flatness, guaranteeing the processing accuracy of the electronic board products.
[0032] Rolling oil has excellent lubrication properties, forming a stable lubricating film on the surface of the rolling mill rolls and the aluminum alloy coil, significantly reducing the coefficient of friction between them and reducing frictional resistance during the rolling process. This not only reduces the energy consumption of the rolling mill but also reduces roll wear, extends roll service life, and lowers equipment maintenance costs. Furthermore, rolling oil has a good cooling effect, effectively removing the heat generated by the contact between the rolls and the aluminum alloy coil during the rolling process. This effectively controls the temperature of the aluminum alloy coil, preventing problems such as poor sheet shape and surface defects caused by excessive temperature, and ensuring the stability of the sheet shape, surface quality, and processing accuracy of the aluminum alloy coil.
[0033] The 6%-8% alcohol content gives the rolling oil suitable adhesion and volatility on the surface of aluminum alloy coils. This ensures that the oil continues to provide lubrication and cooling during the rolling process, while also facilitating subsequent cleaning after rolling. This reduces the impact of residual rolling oil on the surface quality of the aluminum alloy coils, prevents residual rolling oil from interfering with subsequent cutting, straightening and other processing steps, and reduces the risk of environmental pollution, thus meeting the requirements of green processing.
[0034] As a specific implementation method, in this embodiment, the achievable oil film strength and lubrication and cooling performance of rolling oils with different alcohol contents are tested: 1. Experimental materials and equipment Base oil: mineral oil; Additive: Ethanol and isopropanol mixed in a 1:1 ratio; Test equipment: Four-ball friction and wear tester, infrared thermometer, surface roughness tester; Test block: 1100 aluminum alloy plate, and the roll material is GCr15 bearing steel.
[0035] 2. Test conditions Simulated cold rolling conditions: rolling pressure 500T, rolling speed 400mpm, test time 30min; Test parameters: oil film strength (expressed as the maximum non-seize load PB value), strip surface temperature after rolling, and surface roughness Ra.
[0036] 3. Test Results
[0037] The experimental data show that: When the alcohol content increases from 4% to 8%, the oil film strength (PB value) continues to rise, from 650N to 910N, an increase of 40%, indicating that the oil film load-bearing capacity is significantly enhanced and can support rolling at a higher processing rate. The surface temperature of the strip dropped from 89℃ to 62℃, with a significant cooling effect and greatly improved lubrication and cooling performance, avoiding strip deformation and surface defects caused by excessive temperature. The surface roughness Ra decreased from 0.32 μm to 0.18 μm, significantly improving the surface quality of the strip. Compared to the traditional 4% to 6% range, the alcohol content of the experimental group of 6% to 8% has made breakthroughs in all performance indicators. Among them, the overall performance is the best at 7% alcohol content, the oil film strength and cooling effect are the best at 8% alcohol content, and the applicability is the widest at 6%.
[0038] As a specific implementation method, this embodiment takes the processing of 0.14mm*1245mm roll electronic board as an example: Traditional craftsmanship: Process route: 7.0mm → 3.4mm → 1.75mm → 0.95mm → Cooling → 0.53mm → 0.32mm → 1275mm edge trimming → 0.21mm → 0.14mm → Stretching and straightening → 1245mm finished product slitting; Rolling passes: 7; Total production time: approximately 180 minutes, including 101 minutes of rolling time and 79 minutes of auxiliary time (including cooling, edge trimming, and finished product slitting). Finished product specifications: warpage approximately 0.3%, edge wave height 0.5-1mm, yield 91.6%, energy cost approximately 1000 yuan / ton.
[0039]
[0040] The process of this invention: Process route: 7.0mm → 3.3mm → 1.65mm → 0.82mm → Cooling → 0.42mm → Edge trimming 1248mm → 0.245mm → 0.14mm → Straightening.
[0041] Rolling passes: 6; Rolling oil parameters: alcohol additive mass fraction 7%; Total production time: 151 min (rolling time 81 min + auxiliary time 70 min); Finished product specifications (corresponding to claim 7): warpage 0.085%, edge wave height <0.5mm, yield 93.5%, energy consumption cost approximately 900 yuan / ton.
[0042] The rolling parameters are as follows:
[0043] The total production time of this process is 151 minutes, which is 29 minutes less than that of the traditional process; the waste edge is 25mm, and there are no finished product slitting and thick foil cutting processes; the finished product warpage is 0.08%, there are no obvious waves on the edges, and energy consumption is reduced by 100 yuan / ton.
[0044] This application also discloses an aluminum alloy electronic board processing equipment.
[0045] Reference Figure 1 and Figure 2 An aluminum alloy electronic board processing equipment includes a frame 1, on which a plurality of support rollers 2 are rotatably connected, the plurality of support rollers 2 being arranged parallel to each other, and a movable roller 3 is also movably connected to the frame 1, the plurality of support rollers 2 being parallel to each other and the movable roller 3.
[0046] In one specific implementation, in this embodiment, there are two support rollers 2, and the movable roller 3 is located between the two support rollers 2.
[0047] Cylinders 31 are provided at both ends of the frame 1 along its length. The cylinders 31 are located at the upper end of the frame 1. The piston rods of the cylinders 31 are set vertically downward, and the piston rods of the two cylinders 31 are respectively connected to both ends of the movable roller 3 along its length. Before straightening, the distance between the movable roller 3 and several support rollers 2 is adjusted by manipulating the piston rods of the cylinders 31 to extend or retract. During straightening, the power source is provided by winding the aluminum alloy coil. As the coil passes through the frame 1, it maintains uniform contact with the movable roller 3 and several support rollers 2, ensuring a uniform distribution of straightening force. This prevents uneven stress on the coil due to non-parallel rollers, which could lead to incomplete straightening or new deformation defects. Operators can adjust the relative positions of the movable roller 3 and support rollers 2 according to the thickness and curvature of the aluminum alloy coil, thereby changing the magnitude and application of the straightening force. This allows for precise straightening of aluminum alloy coils of different specifications and degrees of deformation, improving the equipment's versatility and applicability to meet diverse processing needs.
[0048] The diameter of the movable roller 3 is smaller than that of the support roller 2. The smaller diameter of the movable roller 3 allows for a smaller contact arc when in contact with the aluminum alloy sheet, resulting in a more concentrated straightening force. This leads to more precise correction of minor local bends and wavy deformations on the sheet surface, further improving the surface flatness and straightening accuracy of the aluminum alloy sheet and meeting the high surface quality requirements of electronic boards. The smaller diameter of the movable roller 3 also results in a lighter weight, requiring less driving force when adjusted by the cylinder 31, reducing the load on the cylinder 31, extending its service life, and making the adjustment of the movable roller 3 more flexible and energy-efficient. Furthermore, the smaller diameter of the movable roller 3 occupies less space within the equipment, facilitating a more compact overall design, reducing the equipment's footprint, lowering production site costs, and simplifying installation, debugging, and maintenance. Different roller diameters allow for better straightening effects by applying different bending radii to the strip.
[0049] As one specific implementation, in this embodiment, aluminum alloy strip using the traditional stretching and straightening process (control group) and aluminum alloy strip using the three-roll bending and straightening process of the present invention (experimental group) are tested. Test results:
[0050] This invention optimizes the rolling oil, innovates the straightening process and equipment, and simplifies the process route, achieving "short process, low energy consumption, high yield, and high flatness" in the production of aluminum alloy electronic boards. All technical indicators are superior to traditional processes, resulting in significant economic benefits and industrialization value.
[0051] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A method of processing an aluminum alloy electronic board, characterized by: The method comprises the following steps: Rolling, rolling the aluminum alloy coil with initial thickness by a rolling mill in multiple passes to roll the aluminum alloy coil to a target thickness; Cutting, cutting the aluminum alloy coil; Straightening, straightening the aluminum alloy coil.
2. The method of claim 1, wherein: In the rolling step, rolling oil is added to the surface of the aluminum alloy coil, and the alcohol content in the rolling oil is 6%-8%.
3. The method of claim 1, wherein: In the rolling step, the speed of rolling the aluminum alloy coil is 331-880 mpm.
4. The method of claim 1, wherein: In the rolling step, the rolling force on the aluminum alloy coil is 230-865T.
5. An aluminum alloy electronic board processing equipment for straightening aluminum alloy coils, characterized in that: The frame body (1) is rotatably connected with a plurality of support rollers (2), and movably connected with a movable roller (3), the plurality of support rollers (2) are arranged parallel to each other, and the plurality of support rollers (2) are parallel to the movable roller (3).
6. An aluminum alloy electronic board processing apparatus according to claim 5, characterized by: The support roller (2) is provided with two, and the movable roller (3) is located between the two support rollers (2).
7. An aluminum alloy electronic board processing apparatus according to claim 6, characterized by: The frame body (1) is provided with a gas cylinder (31) at both ends in the length direction, the piston rod of the gas cylinder (31) is vertically downward, and the piston rods of the two gas cylinders (31) are respectively connected with both ends of the movable roller (3) in the length direction.
8. An aluminum alloy electronic board processing apparatus according to claim 5, characterized by: The diameter of the movable roller (3) is smaller than that of the support roller (2).