Single zero foil processing

Abstract

The present application relates to a single zero foil processing technology, and relates to the technical field of aluminum angle foil processing, which comprises the following steps: smelting and casting rolling; cold rolling; annealing; rolling, edge cutting and finished product. By means of opening pressure release holes in the casting rolling ears and combining with two-stage flow control liquid level stabilization technology, the stress state of the strip edge and the uniformity of the structure are significantly improved, so that the subsequent cold rolling mill can implement large processing rate rolling, combined with the optimization of cold rolling oil additives, one cold rolling processing pass and one edge cutting process are successfully reduced, and the comprehensive production energy consumption is reduced by about 26%, and the production efficiency is improved by about 20%.

Description

Technical Field

[0001] This invention relates to the field of aluminum angle foil processing technology, and in particular to a single-zero foil processing technology. Background Technology

[0002] Single-zero foil typically refers to aluminum foil with a thickness between 0.01mm and 0.1mm. Due to its excellent moisture resistance, light blocking, barrier properties, and good machinability, it is widely used in food packaging, pharmaceutical packaging, capacitor manufacturing, and building insulation. With downstream industries demanding higher quality single-zero foil and increasingly stringent cost control, developing efficient, low-energy-consumption, and high-yield processing techniques for single-zero foil has become a major concern in the aluminum processing industry.

[0003] Traditional single-zero foil manufacturing primarily employs a casting-rolling method to prepare slabs, followed by multiple passes of cold rolling and annealing, cold rolling, edge trimming, and cold rolling, ultimately resulting in the finished strip. In the traditional casting-rolling process, the molten metal is injected into the casting zone through a flow control box. Due to temperature differences and uneven flow rates at the crystallizer edges, significant end-face internal stress often arises at the strip edges. Furthermore, the limited precision of traditional liquid level control leads to large fluctuations in the liquid level, easily causing uneven aluminization at the strip edges. This can easily trigger severe edge cracking defects during subsequent large-deformation cold rolling. To eliminate edge defects, traditional processes require multiple edge trimming steps in the intermediate and finished stages of cold rolling. This not only results in a large amount of waste material and low yield but also increases the number of cold rolling passes, consuming significant amounts of electrical and thermal energy, severely limiting production efficiency.

[0004] In recent years, although some studies have attempted to increase the deformation per pass by adjusting cold rolling process parameters or improving rolling lubrication, during high-processing-rate rolling, the tensile stress at the strip edge is still easily exceeded by the material limits due to inaccurate roll deformation control, leading to strip breakage or edge cracking. Meanwhile, in the trimming process, the overlap and side clearance rely heavily on manual adjustment, which is prone to errors due to manual measurement or thermal expansion from the disc cutter, resulting in abnormal side clearance and poor trimming. This leads to micro-cracks at the strip edge, which worsen in subsequent rolling processes. Therefore, how to systematically optimize the process from multiple dimensions, including casting and rolling level stability, rolling oil lubrication strength, precise shape control, and trimming accuracy control, to reduce processing passes and increase yield, is a bottleneck problem that urgently needs to be solved in the current single-zero foil manufacturing field. Summary of the Invention

[0005] To address the aforementioned issues, this application provides a single-zero foil processing technology.

[0006] This application provides a single-zero foil processing technology, which adopts the following technical solution: A single-zero foil processing technology includes the following steps: S1. Melting and casting: The aluminum melt is fed into the casting and rolling mill for continuous casting and rolling to obtain the cast and rolled strip; through holes are opened on the casting nozzle lugs of the casting and rolling mill, and the flow rate of the aluminum melt flowing into the crystallizer of the casting and rolling mill is regulated by the angular displacement flow controller and the double lever flow controller so that the liquid level fluctuation of the crystallizer is controlled within the set range. S2. Cold rolling: The cast and rolled strip is fed into a cold rolling mill for multiple cold rolling passes. During the cold rolling process, rolling oil is used for lubrication and cooling, and the strip shape is controlled by hydraulic bending rolls and segmented cooling to maintain a slightly wavy edge state to obtain cold rolled strip. S3. Annealing: The strip is annealed without trimming the edges.

[0007] S4. Rolling and trimming: The cold-rolled strip is fed into a shearing machine. The side clearance and overlap of the disc cutter are automatically adjusted according to the thickness of the strip by the automatic disc cutter adjustment system. During the shearing process, the disc cutter is cooled by an oil drip cooling device to remove the edge of the strip. S5. Finished product: Rolled to the finished product thickness, rewound and reversed to produce the finished product; By adopting the above technical solution, a two-stage linkage control system using an angular displacement flow controller and a double-lever flow controller is employed. The angular displacement flow controller performs coarse threshold adjustment, while the double-lever flow controller utilizes the buoyancy feedback of the crystallizer level for time-delay-free fine adjustment, controlling the liquid level fluctuation within 1mm and preventing uneven edge condensation caused by up-and-down fluctuations in the liquid surface. During the cold rolling stage, the addition of highly adsorbent dodecyl alcohol and dodecanoic acid to the rolling oil improves the oil film strength under extreme pressure, allowing for single-pass large reduction rolling in cold rolling, thus eliminating the need for an intermediate cold rolling pass.

[0008] Preferably, in step S1, the through hole opened on the cast-rolled ear is a semi-circular hole with a diameter of 3mm to 6mm.

[0009] By adopting the above technical solution, the diameter of the semi-circular hole is limited to a reasonable range of 3mm to 6mm. While ensuring the structural strength of the ear, the stress constraint on the end face is released to the maximum extent, avoiding the problems of insufficient stress release due to too small a hole diameter and melt leakage or ear breakage due to too large a hole diameter.

[0010] Preferably, in step S1, the cross-sectional area of ​​the flow orifice is adjusted by the flow blocking pin in the angular displacement flow controller to control the basic flow rate, and then the flow orifice opening is automatically finely adjusted according to the buoyancy change of the liquid surface in the crystallizer, thereby controlling the liquid level fluctuation of the liquid surface in the crystallizer to within 1 mm.

[0011] By adopting the above technical solution, the angular displacement flow controller is used as a coarse adjustment means to determine the basic flow direction and flow rate, and the dual lever flow controller performs dynamic fine adjustment according to the buoyancy signal. The two-stage linkage controls the liquid level fluctuation within 1mm, ensuring the flatness of the strip crystallization edge and the uniformity of the solidification structure.

[0012] Preferably, in step S2, the rolling oil comprises a base oil and the following components by mass percentage: 2% alcohol-type additive and 0.2% dodecanoic acid.

[0013] By adopting the above technical solution, introducing a specific proportion of alcohol-type additives and dodecanoic acid into the rolling oil can significantly improve the oil film strength and extreme pressure resistance of the rolling oil, provide a strong and tough physical and chemical adsorption film during large reduction in cold rolling, significantly reduce the friction of the roll foil, increase the single-pass processing rate, thereby greatly reducing the number of rolling passes in the cold rolling mill and reducing energy consumption.

[0014] Preferably, the alcohol-type additive is at least one of fatty alcohol or polyether alcohol.

[0015] By adopting the above technical solutions, fatty alcohols (such as dodecyl alcohol, tetradecyl alcohol, etc.) or polyether alcohols have excellent surface activity and lubricity, and can produce a synergistic effect with dodecanoic acid, providing a multi-layer lubricating protective film for the rolling process.

[0016] Preferably, in step S2, the segmented cooling is performed with spray segments spaced 52mm apart. Based on the plate shape signal fed back by the plate shape detection roller, the amount of rolling oil sprayed from each nozzle segment is independently controlled to adjust the thermal expansion of the roll.

[0017] By adopting the above technical solution, segmented cooling with a narrow spacing of 52mm can achieve high-precision spatial control of the temperature field on the roll surface. Combined with the hydraulic bending roll device, the strip edge is always in a slight edge waviness state, thereby actively reducing the tensile stress at the edge during cold rolling and preventing edge cracking due to excessive tensile stress during large reduction rolling.

[0018] Preferably, in step S4, the automatic disc cutter adjustment system automatically calculates and drives the servo motor to adjust the side clearance and overlap of the disc cutter based on the input strip thickness, thus avoiding errors from manual measurement.

[0019] By adopting the above technical solution, the system realizes automated intelligent tool setting based on the steel strip thickness parameters, eliminating subjective deviations and measurement errors caused by manual adjustment, ensuring the uniformity of the cutting edge position and accuracy, and avoiding burrs or micro-cracks caused by improper side clearance.

[0020] Preferably, in step S4, the drip cooling device continuously applies cooling oil in droplets to the cutting edge of the disc cutter to prevent the disc cutter from thermally expanding due to heat generated during cutting, which could cause abnormalities in the side clearance.

[0021] By adopting the above technical solution, the disc cutter is continuously cooled by micro-drop oil during the shearing motion, which effectively removes the cutting heat of the tool and prevents the disc cutter from thermally expanding and deforming due to temperature rise. This stabilizes the cutting edge clearance, improves the neatness of the shearing edge, and eliminates the hidden cracking risk caused by poor cutting edge.

[0022] Preferably, in step S1, the chemical composition of the aluminum melt by mass percentage is: Fe: 0.65%~0.85%, Si: 0.5%~0.65%, Cu: ≤0.05%, Mn: ≤0.01%, other impurities ≤0.03% individually and ≤0.15% in total, with the balance being Al.

[0023] By adopting the above technical solution and controlling the ratio of Fe to Si to generate a fine and uniform iron-rich phase, the tensile strength of the material is improved, while maintaining excellent plastic deformation capacity, which is conducive to the smooth progress of high-processing-rate cold rolling.

[0024] Preferably, in step S3, the annealing temperature is 420℃~480℃, and the holding time is 2h~6h.

[0025] By adopting the above technical solutions, reasonable annealing process parameters can enable the work-hardened aluminum foil to fully recover and recrystallize, eliminate residual internal stress generated by cold rolling, and improve the elongation and cupping value of the finished single-zero foil.

[0026] In summary, this application includes at least one of the following beneficial technical effects: By employing pressure relief holes in the casting nozzle and combining them with a two-stage flow control liquid level stabilization technology, the stress state and microstructure uniformity of the strip edge were significantly improved, enabling subsequent cold rolling mills to perform high-rate rolling. Combined with the optimization of cold rolling oil additives, one cold rolling pass and one edge trimming process were successfully reduced, resulting in an overall reduction of energy consumption of approximately 26% and an increase in production efficiency of approximately 20%. By adopting an automatic blade adjustment system and an oil drip cooling device, the defects in the cutting edge caused by manual blade adjustment error and thermal deformation are overcome. Combined with the segmented cooling of the cold-rolled strip and precise control of the bending roll, the edge of the cold-rolled strip has a slight edge waviness, the width of the process waste edge is reduced by 25mm, and the overall yield of single zero foil is increased by about 2.1%. Attached Figure Description

[0027] Figure 1 This is a flowchart of a single-zero foil processing technology.

[0028] Figure 2 This is a schematic diagram of the liquid level control principle in a crystallizer.

[0029] Figure 3 This is a schematic diagram of step S2.

[0030] Figure 4 This is a schematic diagram of the principle of adjusting the disc cutter in step S3. Detailed Implementation

[0031] The present application will be further described in detail below with reference to all the accompanying drawings.

[0032] This application discloses a single-zero foil processing technology.

[0033] Reference Figure 1 A single-zero foil processing technology includes the following steps: S1. Melting and Casting: The molten aluminum is fed into the casting and rolling mill for continuous casting and rolling to obtain cast and rolled strip. Through holes are opened on the nozzle lugs of the casting and rolling mill, and the flow rate of the molten aluminum entering the crystallizer is coordinated and controlled by an angular displacement flow controller and a double lever flow controller to keep the liquid level fluctuation in the crystallizer within 1 mm.

[0034] The through-hole on the casting nozzle lug is preferably a semi-circular hole with a diameter of 3mm-6mm. The semi-circular hole is located in the stress-bearing area corresponding to the end face of the strip, to reduce the lateral constraint on the strip edge during casting and rolling, and to release some of the edge stress generated by solidification shrinkage. Without weakening the normal service strength of the casting nozzle lug, the diameter of the semi-circular hole can be 3mm, 4mm, 5mm, or 6mm.

[0035] The flow-blocking probe in the angular displacement flow controller is inserted into the flow orifice. By changing the insertion depth of the probe, the effective cross-sectional area of ​​the flow orifice is adjusted, thus providing basic regulation of the aluminum melt flow rate. The double-lever flow controller includes a float floating on the surface of the crystallizer and a lever mechanism linked to the float. When the crystallizer liquid level rises or falls, the float, under the action of buoyancy, drives the lever mechanism to move, thereby fine-tuning the flow orifice opening. The angular displacement flow controller and the double-lever flow controller respectively complete the coarse flow rate adjustment and the liquid level feedback fine adjustment, thereby reducing the uneven solidification at the edges caused by liquid level fluctuations.

[0036] The aluminum melt, by mass percentage, comprises: 0.65%-0.85% Fe, 0.50%-0.65% Si, no more than 0.05% Cu, no more than 0.01% Mn, and other impurities, with each individual element not exceeding 0.03% and the total not exceeding 0.15%, with the balance being Al. Controlling Fe and Si within the above ranges helps to obtain a more uniform second-phase microstructure, enabling the cast-rolled strip to possess both the strength and plasticity required for subsequent cold rolling.

[0037] S2. Cold Rolling: The cast-rolled strip is fed into a cold rolling mill for multi-pass cold rolling. During the cold rolling process, rolling oil is used for lubrication and cooling. The rolling oil includes base oil and additives; based on the total mass of the rolling oil, the content of alcohol-type additives is 2%, the content of dodecanoic acid is 0.2%, and the balance is base oil. The base oil can be low-viscosity kerosene, narrow-fraction mineral oil, or mixtures thereof; the alcohol-type additives can be fatty alcohols, polyether alcohols, or combinations thereof, such as dodecyl alcohol, tetradecyl alcohol, or polyethylene glycol monobutyl ether.

[0038] During cold rolling, the strip shape is controlled by hydraulic bending rolls and segmented cooling. The spray sections of the segmented cooling are spaced 52mm apart. Based on the shape signal fed back by the shape detection rolls, the amount of rolling oil sprayed in each spray section is independently adjusted to change the thermal expansion state of the rolls in the corresponding parts. At the same time, the roll gap shape is adjusted by hydraulic bending rolls to maintain a slight edge waviness on the strip edge. The slight edge waviness refers to a slight wavy elongation at the edge of the strip relative to the center, which aims to reduce edge tensile stress and decrease the tendency for edge cracking during high-reduction cold rolling.

[0039] S3. Annealing: The cold-rolled strip is annealed without trimming. The annealing temperature is 420℃-480℃, and the holding time is 2h-6h. After annealing, the strip is cooled in the furnace or by a controlled cooling method that does not affect the surface quality of the strip. This step promotes the recovery and recrystallization of work-hardened strip, reduces residual stress, and provides a stable microstructure for subsequent rolling and trimming.

[0040] S4. Rolling and Trimming: The annealed strip undergoes subsequent cold rolling and is then fed into a disc shear for online trimming. The automatic disc shear system includes a control unit, a servo motor, and a transmission mechanism. Based on the input strip thickness and preset process relationships, the control unit calculates the side clearance and overlap of the disc shears and drives the servo motor to move the shear holder axially and radially accordingly, achieving automatic shear setting. This reduces shearing quality fluctuations caused by measurement errors and operational differences during manual shear setting.

[0041] During the cutting process, cooling oil is continuously applied to the cutting edge of the disc cutter via a drip cooling device. The drip cooling device may include an oil supply line and a drip nozzle located at the end of the supply line, with the cooling oil applied in droplets to the sidewall of the disc cutter's cutting edge. The dripping rate can be adjusted according to the shearing speed, strip thickness, and disc cutter temperature rise. In one specific embodiment, the dripping rate is 10 drops / min to 20 drops / min, for example, 15 drops / min. By removing cutting heat with the cooling oil, changes in side clearance caused by thermal expansion of the disc cutter can be suppressed, improving edge smoothness and reducing the probability of edge microcracks.

[0042] S5. Finished Product: The strip with trimmed edges is rolled to the finished thickness, rewound, re-wound, and inspected to obtain the single-zero foil finished product. The finished thickness of the single-zero foil can be determined according to the application, for example, 0.030mm-0.080mm.

[0043] Example 1 This embodiment is used to prepare a single zero foil with a thickness of 0.045 mm.

[0044] The chemical composition of the aluminum melt by mass percentage is: Fe 0.78%, Si 0.58%, Cu 0.02%, Mn 0.005%, other impurities not exceeding 0.01% individually and totaling 0.08%, with the balance being Al.

[0045] A semi-circular hole with a diameter of 5mm is machined in the stress area of ​​the casting nozzle lug of the casting and rolling mill. An angular displacement flow controller is used to adjust the opening of the flow hole base, and a double lever flow controller is used for liquid level feedback fine adjustment to control the liquid level fluctuation in the crystallizer to no more than 0.8mm, thereby obtaining a cast and rolled strip with a thickness of 6.5mm.

[0046] The cast-rolled strip was subjected to three cold rolling passes. Narrow-fraction mineral oil was used as the base oil for the rolling process, with 2% dodecyl alcohol and 0.2% dodecanoic acid. During cold rolling, hydraulic bending rolls and segmented cooling devices with 52mm intervals were used to control the strip shape, maintaining a slight edge waviness on the strip edges. The strip thickness after the third cold rolling pass was 0.62mm.

[0047] The strip is fed into an annealing furnace without trimming the edges and held at 450℃ for 4 hours. After annealing, it is further cold-rolled to 0.12mm and trimmed using an automatic disc cutter adjustment system. The control unit automatically sets the disc cutter side gap and overlap according to the strip thickness, and the oil cooling rate is 15 drops / min. The trimmed strip is rolled to 0.045mm and then rewound and reversed to obtain the single-zero foil finished product.

[0048] Example 2 The process in this embodiment is basically the same as that in Embodiment 1, except that: the diameter of the semi-circular hole of the casting nozzle is 3mm; the Fe content in the aluminum melt is 0.65% and the Si content is 0.50%; the alcohol-type additive is polyethylene glycol monobutyl ether; the annealing temperature is 420℃ and the holding time is 6h; and the oil dripping rate during edge trimming is 10 drops / min. A single-zero foil with a thickness of 0.050mm is obtained.

[0049] Example 3 The process in this embodiment is basically the same as that in Embodiment 1, except that: the diameter of the semi-circular hole of the casting nozzle is 6mm; the Fe content in the aluminum melt is 0.85% and the Si content is 0.65%; tetradecyl alcohol is used as the alcohol additive; the annealing temperature is 480℃ and the holding time is 2h; and the oil dripping rate during edge trimming is 20 drops / min. A single-zero foil with a thickness of 0.040mm is obtained.

[0050] Comparative Example 1 Comparative Example 1 is basically the same as Example 1, except that: the casting nozzle lugs do not have semi-circular holes, and only an angular displacement flow controller is used for flow regulation, instead of a double-lever flow controller for liquid level feedback fine-tuning. The remaining process conditions are the same as in Example 1.

[0051] This comparative example illustrates the impact of the pressure relief structure of the casting nozzle and the two-stage flow control on the edge quality of the cast-rolled strip and the stability of subsequent cold rolling.

[0052] Comparative Example 2 Comparative Example 2 is basically the same as Example 1, except that: only base oil is used for cold rolling, without the addition of alcohol-type additives and dodecanoic acid; segmented cooling control with 52mm intervals is not used during cold rolling, but only conventional overall spray cooling is used. The remaining process conditions are the same as in Example 1.

[0053] This comparative example illustrates the effects of specific rolling oil additives and segmented cooling plate shape control on high-reduction cold rolling, edge cracking tendency, and rolling passes.

[0054] Comparative Example 3 Comparative Example 3 is basically the same as Example 1, except that: the strip is trimmed once before annealing, the side clearance and overlap of the disc cutter are adjusted manually during trimming, and the drip cooling device is not used. The remaining process conditions are the same as in Example 1.

[0055] This comparative example illustrates the effects of non-trimming annealing, automatic blade adjustment of the disc cutter, and drip cooling on trimming quality, waste material quantity, and overall yield.

[0056] Performance Tests and Results The products obtained in Examples 1-3 and Comparative Examples 1-3 were tested. For each group of tests, cast-rolled strip of the same specification was selected, and at least three coils were continuously produced. The values ​​in the table are the average values ​​of the test results for each coil. Liquid level fluctuation was measured using the peak-to-peak value recorded by the crystallizer liquid level detection system; the edge cracking rate was the proportion of the strip length with visible edge cracks during cold rolling to the corresponding total cold-rolled length; the burr height was detected using a metallographic microscope or profilometer; the overall yield rate was the proportion of the finished product weight to the equivalent weight of the molten aluminum; and the overall energy consumption was calculated using the equivalent electrical and thermal energy per unit weight of finished product.

[0057]

[0058] As can be seen from the results in the table, in Examples 1-3, the liquid level fluctuation in the crystallizer can be controlled within 1 mm, the cold rolling edge crack rate and the burr height are both low, and no intermediate edge trimming process is required. Compared with Comparative Example 1, Example 1, by setting a semi-circular hole in the casting nozzle and using an angular displacement flow controller and a double-lever flow controller for coordinated control, reduced the liquid level fluctuation from 1.8 mm to 0.8 mm, and the cold rolling edge crack rate from 1.56% to 0.35%, indicating that the pressure relief structure and dual-stage flow control help improve the edge quality of the strip and the stability of subsequent cold rolling.

[0059] Compared to Comparative Example 2, Example 1 adds alcohol-type additives and dodecanoic acid to the rolling oil, and combines it with hydraulic bending rolls and segmented cooling with 52mm intervals, which can reduce the edge cracking rate during high-reduction cold rolling, reduce the need for intermediate edge trimming, thereby improving the overall yield and reducing overall energy consumption.

[0060] Compared to Comparative Example 3, Example 1 uses non-trimmed annealing, automatic disc cutter adjustment, and drip cooling. The burr height of the trimmed edge is reduced from 24μm to 8μm, the total width of the waste edge is reduced from 75mm to 50mm, and the overall yield is increased by 2.1 percentage points. This shows that the above trimming control method can reduce edge quality problems caused by manual tool setting deviation and disc cutter temperature rise.

[0061] 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 single-zero foil processing technology, characterized in that, Includes the following steps: S1. Melting and casting: The aluminum melt is fed into the casting and rolling mill for continuous casting and rolling to obtain the cast and rolled strip; through holes are opened on the casting nozzle lugs of the casting and rolling mill, and the flow rate of the aluminum melt flowing into the crystallizer of the casting and rolling mill is regulated by the angular displacement flow controller and the double lever flow controller so that the liquid level fluctuation of the crystallizer is controlled within the set range. S2. Cold rolling: The cast and rolled strip is fed into a cold rolling mill for multiple cold rolling passes. During the cold rolling process, rolling oil is used for lubrication and cooling, and the strip shape is controlled by hydraulic bending rolls and segmented cooling to maintain a slightly wavy edge state to obtain cold rolled strip. S3. Annealing: The strip is annealed without trimming the edges; S4. Rolling and trimming: The cold-rolled strip is fed into a shearing machine. The side clearance and overlap of the disc cutter are automatically adjusted according to the thickness of the strip by the automatic disc cutter adjustment system. During the shearing process, the disc cutter is cooled by an oil drip cooling device to remove the edge of the strip. S5. Finished product: Rolled to the finished product thickness, rewound and reversed to produce the finished product.

2. The single-zero foil processing technology according to claim 1, characterized in that: In step S1, the through hole opened on the casting nozzle ear is a semi-circular hole with a diameter of 3mm to 6mm.

3. The single-zero foil processing technology according to claim 1, characterized in that: In step S1, the cross-sectional area of ​​the flow orifice is adjusted by the flow blocking pin in the angular displacement flow controller to control the basic flow rate. Then, the opening of the flow orifice is automatically fine-tuned according to the buoyancy change of the liquid surface in the crystallizer, thereby controlling the liquid level fluctuation of the liquid surface in the crystallizer to within 1 mm.

4. The single-zero foil processing technology according to claim 1, characterized in that: In step S2, the rolling oil comprises a base oil and the following components by mass percentage: 2% alcohol-type additive and 0.2% dodecanoic acid.

5. The single-zero foil processing technology according to claim 4, characterized in that: The alcohol-type additive is at least one of fatty alcohols or polyether alcohols.

6. The single-zero foil processing technology according to claim 1, characterized in that: In step S2, the segmented cooling uses a spray segment interval of 52mm. Based on the plate shape signal fed back by the plate shape detection roller, the amount of rolling oil sprayed from each nozzle segment is independently controlled to adjust the thermal expansion of the roll.

7. The single-zero foil processing technology according to claim 1, characterized in that: In step S4, the automatic disc cutter adjustment system automatically calculates and drives the servo motor to adjust the side clearance and overlap of the disc cutter based on the input strip thickness, thus avoiding errors from manual measurement.

8. The single-zero foil processing technology according to claim 1, characterized in that: In step S4, the drip cooling device continuously applies cooling oil in droplets to the cutting edge of the disc cutter to prevent the disc cutter from thermally expanding due to heat generated during cutting, which could cause abnormalities in the side clearance.

9. The single-zero foil processing technology according to claim 1, characterized in that: In step S1, the chemical composition of the aluminum melt by mass percentage is as follows: Fe: 0.65%~0.85%, Si: 0.5%~0.65%, Cu: ≤0.05%, Mn: ≤0.01%, other impurities ≤0.03% individually and ≤0.15% in total, with the balance being Al.

10. The single-zero foil processing technology according to claim 1, characterized in that: In step S3, the annealing temperature is 420℃~480℃, and the holding time is 2h~6h.

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