Preparation method of hollow framework aluminum composite plate

Abstract

The invention relates to the field of aluminum composite plates, in particular to a hollow framework aluminum composite plate preparation method which comprises the steps that punching of a galvanized steel plate is completed; when it is judged that preparation of the punched steel plate meets the preset standard according to the mean value of the protruding heights of the edges of the punched holes, cleaning and double-face glue spraying of the punched steel plate are completed in sequence; when it is judged that the preparation of the punched steel plate does not meet the preset standard according to the mean value, additionally judging whether the preparation of the punched steel plate meets the standard or not, or determining the reason that the preparation does not meet the preset standard according to the punching edge feature value; compounding the two glue spraying surfaces of the punched steel plate with the aluminum plate; respectively obtaining a low-amplitude cracking angle and a high-amplitude cracking angle; and when the preparation of the hollow framework aluminum composite plate is preliminarily judged not to meet the preset standard based on the low-amplitude cracking angle, a process optimization mode is determined according to the effective bonding area proportion, or whether the preparation of the hollow framework aluminum composite plate meets the preset standard or not is verified according to the high-amplitude cracking angle, and the composite strength of the hollow framework aluminum composite plate is improved.

Description

Technical Field

[0001] The invention relates to the field of aluminum composite panels, and in particular to a method for preparing a hollow skeleton aluminum composite panel. Background Art

[0002] Metal composite panels are composite materials made of two or more layers of heterogeneous metals that are laminated together through special processing to achieve interface bonding. Hollow skeleton aluminum composite panels are a composite of aluminum panels on both sides and a hollow structure in the middle. Unlike honeycomb aluminum, the middle layer of the hollow skeleton aluminum composite panel is thinner and has a larger bonding area with the aluminum panels to be composited.

[0003] In the prior art, steel has the advantages of high strength and low cost. After the steel is hollowed out, it is compounded with an aluminum plate. The resulting composite plate has the advantages of being lightweight and high-strength as well as being low in cost. However, in the production of hollow skeleton aluminum composite plates, the intermediate steel plate to be compounded needs to be punched before compounding. In the actual production process, the parameters of punching and compounding fluctuate due to temperature changes and equipment fluctuations. If not monitored in a timely manner, batches of products will be scrapped. Summary of the invention

[0004] To this end, the present invention provides a method for preparing a hollow skeleton aluminum composite panel, which is used to overcome the problem in the prior art that the product batches are scrapped due to temperature changes and equipment fluctuations during production due to the lack of effective detection or monitoring of intermediate or finished hollow skeleton aluminum composite panels.

[0005] To achieve the above object, the present invention provides a method for preparing a hollow skeleton aluminum composite panel, comprising:

[0006] Step S1, setting preset punching parameters to complete punching of the galvanized steel sheet to obtain a punched steel sheet, wherein the punching parameters include a punching diameter, a punching spacing, a punching speed, and a punching preheating temperature;

[0007] Step S2, randomly obtaining the average value of the edge protrusion heights of a plurality of punching holes within an area and determining that the preparation of the punching steel plate meets the preset standard based on the average value, and then completing the cleaning and double-sided glue spraying of the punching steel plate in sequence;

[0008] Step S3, when it is determined according to the mean that the preparation of the perforated steel plate does not meet the preset standard, it is additionally determined according to the warping degree of the area whether the preparation of the perforated steel plate meets the standard, or the reason for not meeting the preset standard is determined according to the characteristic value of the punching edge;

[0009] Step S4, setting preset hot pressing parameters to compound the two glue-sprayed surfaces of the punching steel plate with the aluminum plate, wherein the preset hot pressing parameters include hot pressing pressure, hot pressing temperature and hot pressing roller speed;

[0010] Step S5, using the minimum and maximum values ​​of the glue line contact as broken lines, respectively obtaining a low-amplitude cracking angle and a high-amplitude cracking angle;

[0011] Step S6, when it is preliminarily determined based on the low-amplitude cracking angle that the preparation of the hollow skeleton aluminum composite panel does not meet the preset standard, the process optimization method is determined according to the effective bonding area ratio, or, whether the preparation of the hollow skeleton aluminum composite panel meets the preset standard is verified according to the high-amplitude cracking angle.

[0012] Furthermore, in the step S2, it is determined that the preparation of the perforated steel plate meets the preset standard under the condition that the average value of the edge protrusion heights of the plurality of punched holes is less than a first preset protrusion average value.

[0013] Further, in the step S3, it is determined that the preparation of the punched steel plate does not meet the preset standard under the condition that the average value of the edge protrusion heights of the plurality of punched holes is greater than or equal to the first preset protrusion average value, and,

[0014] Under the condition that the average value of the edge protrusion heights of the plurality of punched holes is greater than or equal to the first preset protrusion average value and less than the second preset protrusion average value, it is additionally determined whether the preparation of the punched steel plate meets the standard according to the curvature of the area of ​​the region,

[0015] Under the condition that the average of the edge protrusion heights of the plurality of punching holes is greater than or equal to the second preset protrusion average value, the reason for not meeting the preset standard is determined based on the punching edge characteristic value.

[0016] Furthermore, in step S3, in response to the warpage being greater than a preset warpage, it is additionally determined that the preparation of the punched steel plate does not meet the standards, and the punching preheating temperature is increased according to the warpage difference, and the increase in the punching preheating temperature is positively correlated with the warpage difference, wherein the warpage difference is the difference between the warpage and the preset warpage.

[0017] Furthermore, in step S3, the reason for not meeting the preset standard is determined according to the punching edge characteristic value, wherein:

[0018] If the punching edge characteristic value is less than the preset punching edge characteristic value, it is determined that the reason for not meeting the preset standard is that the punching speed does not meet the standard, and the punching speed is adjusted according to the difference between the preset punching edge characteristic value and the punching edge characteristic value;

[0019] If the punching edge characteristic value is greater than or equal to the preset punching edge characteristic value, it is determined that the reason for not meeting the preset standard is that the punching temperature does not meet the standard, and the punching preheating temperature is increased according to the difference between the punching edge characteristic value and the preset punching edge characteristic value.

[0020] Further, in the step S3, the punching edge characteristic value is the ratio of the area of ​​the punching edge slip region to the area of ​​the punching edge protrusion region.

[0021] Further, in the step S6, when the low-amplitude cracking angle is less than a second preset low-amplitude cracking angle, it is determined that the preparation of the hollow skeleton aluminum composite panel does not meet the preset standard, and,

[0022] When the low-amplitude cracking angle is greater than or equal to a first preset low-amplitude cracking angle and less than a second preset low-amplitude cracking angle, checking whether the preparation of the hollow skeleton aluminum composite panel meets the preset standard according to the high-amplitude cracking angle;

[0023] When the low-amplitude cracking angle is less than a first preset low-amplitude cracking angle, a process optimization method is determined according to a proportion of an effective bonding area.

[0024] Furthermore, in the step S6, when the high-amplitude cracking angle is less than the preset high-amplitude cracking angle, it is checked that the preparation of the hollow skeleton aluminum composite panel does not meet the preset standard, and the hot pressing temperature is reduced according to the difference between the preset high-amplitude cracking angle and the high-amplitude cracking angle.

[0025] Further, a process optimization method is determined according to the effective bonding area ratio, wherein:

[0026] If the effective bonding area ratio is less than the preset ratio threshold, the speed of the hot pressing roller is reduced to a corresponding value according to the difference between the preset ratio threshold and the effective bonding area ratio;

[0027] If the effective bonding area ratio is greater than or equal to the preset ratio threshold, the hot pressing pressure is increased to a corresponding value according to the difference between the effective bonding area ratio and the preset ratio threshold.

[0028] Furthermore, the reduction amplitude of the rotation speed of the hot pressing roller is positively correlated with the rotation speed adjustment difference, and the rotation speed adjustment difference is the difference between the preset proportion threshold and the effective bonding area proportion.

[0029] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention monitors the punching and hot pressing bonding of the key intermediate steel plates in the preparation of hollow skeleton aluminum composite panels, and optimizes the preparation parameters accordingly when it is determined that the punching of the intermediate galvanized steel plate does not meet the preset standards through the deformation characteristics of the punching during the punching stage, and determines the composite properties of the composite plate through the low-amplitude cracking angle and the high-amplitude cracking angle of the composite plate, thereby optimizing the composite parameters accordingly when the composite properties do not meet the preset standards. The present application realizes self-optimization of the continuous production process of the hollow skeleton aluminum composite panel through self-learning, thereby avoiding the scrapping of batch products due to fluctuations in punching and composite parameters caused by temperature changes and equipment fluctuations.

[0030] Furthermore, the present invention sets corresponding thresholds and threshold intervals that characterize the edge protrusion height of the punching, so as to accurately respond to the state of the punching, and then accurately determine the cause or corresponding strategy when it does not meet the standard.

[0031] Furthermore, unlike previous bending tests, the present application obtains a low-amplitude cracking angle and a high-amplitude cracking angle respectively, thereby more accurately characterizing the composite performance of the hollow skeleton aluminum composite panel through the two cracking angles. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 Flow chart of the method for preparing the hollow skeleton aluminum composite panel in an embodiment of the present invention;

[0033] Figure 2 A flow chart of determining whether the preparation of a perforated steel plate meets a preset standard according to an embodiment of the present invention;

[0034] Figure 3 A flow chart of determining whether the preparation of the hollow skeleton aluminum composite panel meets the preset standard according to an embodiment of the present invention;

[0035] Figure 4 This is a schematic diagram of low-amplitude cracking angle measurement according to an embodiment of the present invention;

[0036] Figure 5 This is a schematic diagram of high-amplitude cracking angle measurement according to an embodiment of the present invention;

[0037] In the figure: 101, punched steel plate; 102, glue layer; 103, aluminum plate; L1, low-amplitude cracking angle measurement broken line; L2, high-amplitude cracking angle measurement broken line. DETAILED DESCRIPTION

[0038] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0039] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0040] See also Figures 1 to 5 As shown, they are respectively a flow chart of a method for preparing a hollow skeleton aluminum composite plate in an embodiment of the present invention; a flow chart of determining whether the preparation of a perforated steel plate meets a preset standard in an embodiment of the present invention; a flow chart of determining whether the preparation of a hollow skeleton aluminum composite plate meets a preset standard in an embodiment of the present invention; a schematic diagram of measuring a low-amplitude cracking angle in an embodiment of the present invention; and a schematic diagram of measuring a high-amplitude cracking angle in an embodiment of the present invention.

[0041] The method for preparing the hollow skeleton aluminum composite panel in the embodiment of the present invention comprises:

[0042] Step S1, setting preset punching parameters to complete punching of the galvanized steel sheet to obtain a punched steel sheet, wherein the punching parameters include a punching diameter, a punching spacing, a punching speed, and a punching preheating temperature;

[0043] Step S2, randomly obtain an area of ​​0.25m 2 When the average value of the edge protrusion heights of several punched holes is determined and the preparation of the punched steel plate is judged to meet the preset standard according to the average value, the cleaning and double-sided glue spraying of the punched steel plate are completed in sequence;

[0044] Step S3, when it is determined according to the mean that the preparation of the perforated steel plate does not meet the preset standard, it is additionally determined according to the warping degree of the area whether the preparation of the perforated steel plate meets the standard, or the reason for not meeting the preset standard is determined according to the characteristic value of the punching edge;

[0045] Step S4, setting preset hot pressing parameters to compound the two glue-sprayed surfaces of the punching steel plate with the aluminum plate, wherein the preset hot pressing parameters include hot pressing pressure, hot pressing temperature and hot pressing roller speed;

[0046] Step S5, using the minimum and maximum values ​​of the glue line contact as broken lines, respectively obtaining a low-amplitude cracking angle and a high-amplitude cracking angle;

[0047] Step S6, when it is preliminarily determined based on the low-amplitude cracking angle that the preparation of the hollow skeleton aluminum composite panel does not meet the preset standard, the process optimization method is determined according to the effective bonding area ratio, or, whether the preparation of the hollow skeleton aluminum composite panel meets the preset standard is verified according to the high-amplitude cracking angle.

[0048] Specifically, in step S1, the thickness of the galvanized steel sheet is 1 mm, and the punching parameters are set as follows: punching diameter 4 mm, punching spacing 6 mm, punching speed 350 times / minute, and punching preheating temperature 280°C.

[0049] Specifically, in step S4, the preset hot pressing parameters are set as follows: hot pressing pressure is 40 MPa, hot pressing temperature is 400° C., and hot pressing roller speed is 8.5 m / min.

[0050] Specifically, in step S2, the glue used for spraying is epoxy resin glue or acrylate glue.

[0051] Specifically, in step S2, the preparation of the perforated steel plate is determined to meet the preset standard under the condition that the average of the edge protrusion heights of the plurality of punched holes is less than a first preset protrusion average value, wherein the first preset protrusion average value is set to 37 μm.

[0052] Specifically, in step S3, under the condition that the average value of the edge protrusion heights of the plurality of punched holes is greater than or equal to the first preset protrusion average value, it is determined that the preparation of the punched steel plate does not meet the preset standard, and,

[0053] Under the condition that the average value of the edge protrusion heights of the plurality of punched holes is greater than or equal to the first preset protrusion average value and less than the second preset protrusion average value, it is additionally determined whether the preparation of the punched steel plate meets the standard according to the curvature of the area of ​​the region,

[0054] Under the condition that the average of the edge protrusion heights of the plurality of punching holes is greater than or equal to the second preset protrusion average value, determining the reason for not meeting the preset standard according to the punching edge characteristic value;

[0055] The second preset protrusion average value is set to 115 μm. It can be understood that the edge protrusion height of the punching hole can be measured by a micrometer or by a three-dimensional coordinate measuring machine.

[0056] Specifically, in step S3, in response to the warpage being greater than the preset warpage, it is additionally determined that the preparation of the punched steel plate does not meet the standard, and the punching preheating temperature is increased according to the warpage difference, and the increase in the punching preheating temperature is positively correlated with the warpage difference, wherein the warpage difference is the difference between the warpage and the preset warpage, wherein the preset warpage is set to 2.45%, it can be understood that the positive correlation can be a linear positive correlation or a nonlinear positive correlation, and the nonlinear positive correlation is, for example, a curve, wherein the slope of the linear positive correlation is not specifically limited, and it only needs to satisfy that the larger the warpage difference, the larger the increase in the punching preheating temperature. It can be understood that the increase in the punching preheating temperature is set to △T, and the warpage difference is set to △ε, then △T=β×△ε, β is the temperature adjustment coefficient, and β is set to 1.12×10 3 For example, if the warpage of the prepared area is 3.15%, then it is determined that the preparation of the punched steel plate does not meet the standard, and the warpage difference is 0.7%, then △T=7.85, and the increased punching preheating temperature is 287.85°C.

[0057] Specifically, in step S3, the reason for not meeting the preset standard is determined according to the punching edge feature value, wherein:

[0058] If the punching edge characteristic value is less than 77.50% of the preset punching edge characteristic value, it is determined that the reason for not meeting the preset standard is that the punching speed does not meet the standard, and the punching speed is adjusted according to the difference between the preset punching edge characteristic value and the punching edge characteristic value;

[0059] If the punching edge characteristic value is greater than or equal to the preset punching edge characteristic value, it is determined that the reason for not meeting the preset standard is that the punching temperature does not meet the standard, and the punching preheating temperature is increased according to the difference between the punching edge characteristic value and the preset punching edge characteristic value.

[0060] Specifically, in step S3, the punching edge characteristic value is the ratio of the punching edge slip region area to the punching edge convex region area. The punching edge slip region and the punching edge convex region can be obtained through image acquisition. The punching edge slip region is the region that loses its metallic luster due to deformation.

[0061] Specifically, when the low-amplitude cracking angle is greater than or equal to a second preset low-amplitude cracking angle of 55°, it is determined that the preparation of the hollow skeleton aluminum composite panel meets the preset standard.

[0062] Specifically, in the step S6, when the low-amplitude cracking angle is less than a second preset low-amplitude cracking angle, it is determined that the preparation of the hollow skeleton aluminum composite panel does not meet the preset standard, and,

[0063] When the low-amplitude cracking angle is greater than or equal to a first preset low-amplitude cracking angle and less than a second preset low-amplitude cracking angle, checking whether the preparation of the hollow skeleton aluminum composite panel meets the preset standard according to the high-amplitude cracking angle;

[0064] When the low-amplitude cracking angle is less than a first preset low-amplitude cracking angle, determining a process optimization method according to a proportion of an effective bonding area;

[0065] The first preset low-amplitude cracking angle is set to 20°;

[0066] See also Figure 4 Specifically, the low-amplitude cracking angle is the angle at which the hollow skeleton aluminum composite plate cracks along the composite position when the hollow skeleton aluminum composite plate is bent along any straight line L1 which is parallel to the punching steel plate and intersects with the material on the punching lever with the shortest total length as a broken line;

[0067] See also Figure 5 The high-amplitude cracking angle is the angle at which the hollow skeleton aluminum composite plate cracks along the composite position when the hollow skeleton aluminum composite plate is bent along any straight line L2 which is parallel to the punching steel plate and intersects with the material on the punching lever with the longest total length as a broken line.

[0068] Specifically, in step S6, when the high-amplitude cracking angle is less than the preset high-amplitude cracking angle of 45, it is checked that the preparation of the hollow skeleton aluminum composite panel does not meet the preset standard, and the hot pressing temperature is reduced according to the difference between the preset high-amplitude cracking angle and the high-amplitude cracking angle.

[0069] Specifically, the process optimization method is determined according to the effective bonding area ratio, wherein:

[0070] If the effective bonding area ratio is less than the preset ratio threshold of 62%, the speed of the hot pressing roller is reduced to a corresponding value according to the difference between the preset ratio threshold and the effective bonding area ratio;

[0071] If the effective bonding area ratio is greater than or equal to the preset ratio threshold, the hot pressing pressure is increased to a corresponding value according to the difference between the effective bonding area ratio and the preset ratio threshold;

[0072] The effective bonding area ratio is the percentage of the solid part of the punched steel plate after punching.

[0073] Specifically, the reduction amplitude of the speed of the hot pressing roller is positively correlated with the speed adjustment difference, and the speed adjustment difference is the difference between the preset proportion threshold and the effective bonding area proportion. It can be understood that the positive correlation can be a linear positive correlation or a nonlinear positive correlation. The nonlinear positive correlation is for example a curve, wherein the slope of the linear positive correlation is not specifically limited, and it is only necessary to satisfy that the larger the speed adjustment difference, the larger the reduction amplitude of the speed of the hot pressing roller.

[0074] See also Figure 4 or Figure 5 The prepared hollow skeleton aluminum composite panel includes a perforated steel plate 101 , glue layers 102 located on both sides of the perforated steel plate 101 , and aluminum plates 103 located between the two glue layers 102 and away from both sides of the perforated steel plate 101 .

[0075] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0076] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for preparing a hollow skeleton aluminum composite panel, characterized in that: include: Step S1, setting preset punching parameters to complete punching of the galvanized steel sheet to obtain a punched steel sheet, wherein the punching parameters include a punching diameter, a punching spacing, a punching speed, and a punching preheating temperature; Step S2, randomly obtaining the average value of the edge protrusion heights of a plurality of punching holes within an area and determining that the preparation of the punching steel plate meets the preset standard based on the average value, and then completing the cleaning and double-sided glue spraying of the punching steel plate in sequence; Step S3, when it is determined according to the mean that the preparation of the perforated steel plate does not meet the preset standard, it is additionally determined according to the warping degree of the area whether the preparation of the perforated steel plate meets the standard, or the reason for not meeting the preset standard is determined according to the characteristic value of the punching edge; Step S4, setting preset hot pressing parameters to compound the two glue-sprayed surfaces of the punching steel plate with the aluminum plate, wherein the preset hot pressing parameters include hot pressing pressure, hot pressing temperature and hot pressing roller speed; Step S5, using the minimum and maximum values ​​of the glue line contact as broken lines to obtain the low-amplitude cracking angle and the high-amplitude cracking angle respectively; Step S6, when it is preliminarily determined based on the low-amplitude cracking angle that the preparation of the hollow skeleton aluminum composite panel does not meet the preset standard, the process optimization method is determined according to the effective bonding area ratio, or, whether the preparation of the hollow skeleton aluminum composite panel meets the preset standard is verified according to the high-amplitude cracking angle.

2. The method for preparing a hollow skeleton aluminum composite panel according to claim 1, characterized in that: In the step S2, it is determined that the preparation of the punched steel plate meets the preset standard under the condition that the average value of the edge protrusion heights of the plurality of punched holes is less than the first preset protrusion average value.

3. The method for preparing a hollow skeleton aluminum composite panel according to claim 1, characterized in that: In the step S3, it is determined that the preparation of the punched steel plate does not meet the preset standard under the condition that the average value of the edge protrusion heights of the plurality of punched holes is greater than or equal to the first preset protrusion average value, and, Under the condition that the average value of the edge protrusion heights of the plurality of punched holes is greater than or equal to the first preset protrusion average value and less than the second preset protrusion average value, it is additionally determined whether the preparation of the punched steel plate meets the standard according to the curvature of the area of ​​the region, Under the condition that the average of the edge protrusion heights of the plurality of punching holes is greater than or equal to the second preset protrusion average value, the reason for not meeting the preset standard is determined based on the punching edge characteristic value.

4. The method for preparing a hollow skeleton aluminum composite panel according to claim 3, characterized in that: In step S3, in response to the warpage being greater than a preset warpage, it is additionally determined that the preparation of the punched steel plate does not meet the standards, and the punching preheating temperature is increased according to the warpage difference, and the increase in the punching preheating temperature is positively correlated with the warpage difference, wherein the warpage difference is the difference between the warpage and the preset warpage.

5. The method for preparing a hollow skeleton aluminum composite panel according to claim 4, characterized in that: In step S3, the reason for not meeting the preset standard is determined based on the punching edge feature value, wherein: If the punching edge characteristic value is less than the preset punching edge characteristic value, it is determined that the reason for not meeting the preset standard is that the punching speed does not meet the standard, and the punching speed is adjusted according to the difference between the preset punching edge characteristic value and the punching edge characteristic value; If the punching edge characteristic value is greater than or equal to the preset punching edge characteristic value, it is determined that the reason for not meeting the preset standard is that the punching temperature does not meet the standard, and the punching preheating temperature is increased according to the difference between the punching edge characteristic value and the preset punching edge characteristic value.

6. The method for preparing a hollow skeleton aluminum composite panel according to claim 5, characterized in that: In step S3, the punching edge characteristic value is the ratio of the area of ​​the punching edge slip region to the area of ​​the punching edge protrusion region.

7. The method for preparing a hollow skeleton aluminum composite panel according to claim 1, characterized in that: In the step S6, when the low-amplitude cracking angle is less than a second preset low-amplitude cracking angle, it is determined that the preparation of the hollow skeleton aluminum composite panel does not meet the preset standard, and, When the low-amplitude cracking angle is greater than or equal to a first preset low-amplitude cracking angle and less than a second preset low-amplitude cracking angle, checking whether the preparation of the hollow skeleton aluminum composite panel meets the preset standard according to the high-amplitude cracking angle; When the low-amplitude cracking angle is less than a first preset low-amplitude cracking angle, a process optimization method is determined according to a proportion of an effective bonding area.

8. The method for preparing a hollow skeleton aluminum composite panel according to claim 7, characterized in that: In the step S6, when the high-amplitude cracking angle is less than the preset high-amplitude cracking angle, it is checked that the preparation of the hollow skeleton aluminum composite panel does not meet the preset standard, and the hot pressing temperature is reduced according to the difference between the preset high-amplitude cracking angle and the high-amplitude cracking angle.

9. The method for preparing a hollow skeleton aluminum composite panel according to claim 8, characterized in that: The process optimization method is determined according to the effective bonding area ratio, wherein: If the effective bonding area ratio is less than the preset ratio threshold, the speed of the hot pressing roller is reduced to a corresponding value according to the difference between the preset ratio threshold and the effective bonding area ratio; If the effective bonding area ratio is greater than or equal to the preset ratio threshold, the hot pressing pressure is increased to a corresponding value according to the difference between the effective bonding area ratio and the preset ratio threshold.

10. The method for preparing a hollow skeleton aluminum composite panel according to claim 9, characterized in that: The reduction range of the rotation speed of the hot pressing roller is positively correlated with the rotation speed adjustment difference, and the rotation speed adjustment difference is the difference between the preset proportion threshold and the effective bonding area proportion.

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