WO2018196432A1

WO2018196432A1 - Method for manufacturing brazed honeycomb panel and honeycomb panel

Info

Publication number: WO2018196432A1
Application number: PCT/CN2017/120295
Authority: WO
Inventors: 雷煜; 王立铮; 刘建伟; 郑涛; 王胜江
Original assignee: 中车唐山机车车辆有限公司
Priority date: 2017-04-28
Filing date: 2017-12-29
Publication date: 2018-11-01
Also published as: CN108790296A

Abstract

A method for manufacturing a brazed honeycomb panel, comprising the following steps: stretching a composite aluminum foil, which is formed by pre-gumming, stacking, and binding and has a brazing filler metal layer, as a honeycombed aluminum honeycomb core; press-fixing the aluminum honeycomb core between two blank panels that have brazing filler metal layers by using a clamping device to form a layered structure; and performing brazing treatment on the layered structure fixed by clamping at a nitrogen atmosphere to obtain a honeycomb panel. In the present application, the glued aluminum foil is stretched as honeycombed by means of a stretching method, and then brazing is directly performed with an aluminum panel after glue cracking treatment, such that complete metallurgical bonding is achieved between honeycomb core materials as well as between core materials and aluminum panels, and high efficiency and low energy consumption are achieved.

Description

Method for manufacturing brazed honeycomb panel and honeycomb panel

Technical field

The present application relates to the field of rail transit, and in particular to a method of manufacturing a brazed honeycomb panel and a honeycomb panel.

Background technique

In the field of rail transit, floors, roofs, etc. used in transportation vehicles such as subways and urban rail vehicles are mostly ceramsite sand and adhesive aluminum honeycomb materials. The ceramsite sand was gradually eliminated due to its inability to meet the design's weight reduction requirements. Adhesive aluminum honeycomb panels are easily connected by the surrounding environment and the properties of the adhesive due to the bonding between the honeycomb cores and the honeycomb cores and the aluminum sheets. For example, in the high altitude environment, it is easy to degumming, drumming, and unrepairable.

For example, the patent application No. 200910094562.6 discloses a method for preparing a brazed metal honeycomb panel. The preparation of the aluminum honeycomb core is assembled into a honeycomb shape by roll forming, and the assembly precision of the honeycomb core is difficult to meet. Inefficient, it is difficult to achieve industrial production.

For example, the patent application No. 201410796743.7 discloses a glueless composite board and a manufacturing process thereof, although a welding process similar to the present application is mentioned, but a honeycomb finning machine is used for roll forming, not mentioned. To the honeycomb manufacturing process.

For example, the patent application No. 201210177885.3 discloses a method for preparing an aluminum honeycomb core material and a honeycomb panel by preparing a brazed aluminum honeycomb core by a stretching method after vacuum brazing, and then vacuum welding with the aluminum plate. Vacuum brazing consumes energy, has low production efficiency, and secondary welding greatly increases production costs.

For example, a method of preparing a metal honeycomb core material and a honeycomb sandwich panel is disclosed in the patent application No. 201310003242.1. Although it is mentioned that the honeycomb core is prepared by the stretching method, it is directly coated with the solder-coated aluminum plate by using a rubber or solder on the non-composite aluminum foil, and the rubber compound does not ensure the metallurgical connection between the honeycomb cores. . After brazing with a brazing material and then stretching into a honeycomb shape, it belongs to secondary brazing, which is low in efficiency and energy consuming.

In summary, the shortcomings in the prior art are:

1. Adhesive aluminum honeycomb is easily degummed due to environmental and working conditions. After being rolled and formed into a honeycomb shape, the assembly precision of the honeycomb core is difficult to meet and the efficiency is low, and it is difficult to realize industrial production;

2. The brazed aluminum honeycomb core is prepared by a stretching method, and then vacuum brazed and then brazed with an aluminum plate vacuum or an atmosphere furnace. Vacuum brazing consumes energy, has low production efficiency, and secondary welding increases energy consumption and increases production costs.

Summary of the invention

In the embodiment of the present application, a method for manufacturing a brazed honeycomb panel and a honeycomb panel are provided to solve the problem that the adhesive aluminum honeycomb is easy to be degummed in the prior art, and the honeycomb core assembly precision is low; the brazed aluminum honeycomb core has high cost and low efficiency. problem.

The present application provides a method of manufacturing a brazed honeycomb panel, the method comprising the steps of:

Forming a composite aluminum foil having a solder layer formed by pre-gluing and stacking into a honeycomb-shaped aluminum honeycomb core;

Pressing the aluminum honeycomb core between the two blank plates having the solder layer to form a layered structure by using a card loading device;

The layered structure fixed by the card is brazed under a nitrogen atmosphere to obtain a honeycomb panel.

A honeycomb panel produced by the method of claim 1.

The beneficial effects of the application are as follows:

Compared with the prior art, the present application forms a double-sided composite aluminum foil into an aluminum honeycomb by a gluing process, and brazes the honeycomb and the single-sided composite aluminum plate, and the welding only needs to spray the flux on the honeycomb and the composite aluminum plate, and the welding is performed. The metallurgical bond between the core materials is completely unaffected by the adhesive. The metallurgical combination between the core materials and the honeycomb and the plate material is high in strength, light in weight, soundproof, fireproof, environmentally friendly, weldable and completely recoverable. It not only overcomes the shortcomings of low efficiency and energy consumption in the preparation of honeycomb core by molding method, but also overcomes the disadvantages of high energy consumption and low efficiency of aluminum brazing prepared by vacuum brazing or secondary brazing. The brazing aluminum honeycomb assembly of the present application has high assembly precision and simple operation, can greatly improve production efficiency, and is suitable for industrial production.

DRAWINGS

The drawings described herein are intended to provide a further understanding of the present application, and are intended to be a part of this application. In the drawing:

1 is a schematic view showing a method of manufacturing a brazed honeycomb panel according to the present application;

2 is a schematic view of a single rubber strip printing roller according to the present application;

Figure 3 is a schematic view of the double-strip printing roller of the present application;

4 is a schematic view showing a cross section of a single-glue rubber-coated aluminum foil stack according to the present application;

Figure 5 is a schematic view showing a cross section of a double-glue rubber-coated aluminum foil stack according to the present application;

Figure 6 is a schematic view of the plate body loading device of the present application;

Figure 7 is a schematic view of a pressing mechanism of the plate body loading device of the present application;

Figure 8 is a schematic exploded view of the plate body loading device after assembly of the plate body according to the present application;

9 is a process flow diagram of a single rubber strip brazing honeycomb panel according to the present application;

10 is a process flow diagram of a double-adhesive brazed honeycomb panel according to the present application;

1, tooling platform, 2, pressing mechanism, 3, graphite plate, 4, layered embryo; 21, screw sleeve, 22, bolt, 23, indenter, 24, compression spring.

detailed description

The exemplary embodiments of the present application are further described in detail below with reference to the accompanying drawings. Not all embodiments are exhaustive. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

The core idea of the application is that the double-sided composite aluminum foil coated with epoxy glue is stretched into a honeycomb shape by a stretching method, and the single-sided composite aluminum plate coated with the brazing material is directly brazed after the cracking of the glue, after welding. The metallurgical core material and the core material and the aluminum plate are completely metallurgically combined to achieve high efficiency and low energy consumption.

As shown in FIG. 1 , the present application provides a method for manufacturing a brazed honeycomb panel, which mainly includes the following steps:

Degumming the honeycomb aluminum honeycomb core;

The degummed aluminum honeycomb core was fixed between two green sheets having a solder layer to be brazed to obtain a honeycomb panel.

According to the actual process, the aluminum honeycomb core stretched into a honeycomb shape may be directly fixed between the two blank plates, and then brazed directly to obtain a honeycomb plate. The advantage of the simplification step is that the high temperature in the brazing furnace can be utilized, while the colloid on the cracked aluminum honeycomb core and the layered structure formed by placing the aluminum honeycomb core between the two blanks are brazed, only need to be controlled Good brazing and cracking timing.

In the present example, the blank plate may be a single or multi-layered plate material, for example, a composite aluminum plate, a steel plate, a steel-aluminum composite plate, or the like. The composite aluminum foil may be a double-sided composite aluminum foil. When the steel plate is used, a transition material may be first plated on the steel plate, and the transition material is brazed with the aluminum honeycomb core to ensure the stability after brazing. When the steel-aluminum composite plate is used, the aluminum material surface is in contact with the aluminum honeycomb core, so that the stability of the holding plate and the honeycomb filler can be well achieved after brazing.

In the present example, the step of bonding the composite aluminum foil comprises: coating the adhesive on the surface of the composite aluminum foil in an array; and stacking at least two composite aluminum foils coated with the adhesive in such a manner that the adhesive is misaligned Fixed to form a composite aluminum foil formed by bonding;

The method of the present scheme further comprises spraying a flux on the surface of the aluminum honeycomb core and the blank of the blank having a solder after the degumming treatment. Wherein, the flux is in the form of a powder or a liquid. Preferably, the flux is a potassium fluoroaluminate flux.

In the present example, the aluminum foil may be a double-sided composite aluminum foil, and the thickness is guaranteed to be between 0.08 and 0.6 mm, and the composite ratio may be between 8% and 12%. The aluminum plate may be a multi-layer or single-layer composite aluminum plate, and the thickness is guaranteed to be between 1.0 mm and 5 mm, and the composite ratio may be between 8% and 12%.

In this solution, in order to ensure that all materials are bonded, assembled, brazed, etc., it is not affected by the dirt on the surface of the material. Before the honeycomb panel manufacturing process, it can be judged whether the material to be used needs to be pretreated. For example, in the present example, the composite plate is made of a composite aluminum plate, and the honeycomb core material is made of a composite aluminum foil. Since an oxide film or oil is deposited on the aluminum foil and the aluminum plate, it is necessary to remove the oxidation of the composite aluminum foil and the composite aluminum plate by using an alkaline aqueous solution of trisodium phosphate in advance. Membrane and oil so that these materials will not be affected by dirt during subsequent use.

In this example, the glue application tool on the composite aluminum foil can be directly treated by a glue applicator. The adhesive may be an epoxy, phenolic or rubber mixed adhesive which is volatilized at 300 ° C to 450 ° C. For the glue coating process, a single strip or a double strip can be used. As shown in Fig. 2, the width of the rubber strip coating method is xL, the distance between the rubber rollers is 4L, and the speed of coating the aluminum foil printing is 2-80 m/min. Preferably, the printing speed can be 8-40. In meters/minute, the printed aluminum foil is dried at room temperature to 150 °C. As shown in Figure 3, the double rubber strip rubber roller is designed as shown in the figure. The double rubber strip rubber roller is designed according to the required aluminum honeycomb side length L. The total width of the double rubber strip and the uncoated rubber part is xL, and the uncoated portion is The shape can be designed by itself, the width is ≤ yxL, and the coefficient y can be taken as 0.8. The distance between the rubber rollers is 4 L, and the speed of the aluminum foil printing is 2 to 80 m/min. Preferably, the printing speed can be 8 to 40 m/min. Due to actual engineering needs, the structure for stretching into a honeycomb core may be a non-normal hexagon. Therefore, by adjusting the magnitude of x in the width of the rubber roller, the hexagonal shape of the subsequently stretched honeycomb core can be changed. The value rule is: x < 1, the honeycomb is a flat hexagon; x = 1, the honeycomb is a regular hexagon; x > 1, the honeycomb is a long hexagon.

However, it should be noted that because the contact surface of the aluminum foil is the glued part, the residue after the rubber crack is volatilized will affect the brazing strength of the contact position. The entire contact surface of the single rubber strip is coated with glue, and the metallurgical bonding part after brazing is defective; the double rubber strip is not coated between the rubber strips, and there is no residue after the volatilization of the glue affects the contact position brazing, and the glue is realized. The parts are completely metallurgically bonded to increase the strength of the core contact surface. Therefore, the present application preferably coats the adhesive with a double strip.

The two composite aluminum foils coated with the adhesive are stacked in a staggered manner according to the manner of the adhesive coating, as shown in FIG. 4 or FIG. 5, respectively. Then, an aluminum honeycomb core was obtained by hot pressing and slicing treatment, respectively. Among them, the requirements of hot pressing need to meet: pressure 0.3-0.5Mpa, curing temperature 170 ° C-200 ° C, holding time 2.5h-3h. The requirements for slicing need to be met: cutting accuracy ≤ 0.05mm.

The adhesive is coated in the form of an array on the surface of the composite aluminum foil; the two composite aluminum foils coated with the adhesive are stacked and fixed in such a manner that the adhesive is misaligned to form a composite aluminum foil which is bonded and formed, and then pulled. Stretching to form a honeycomb aluminum honeycomb core.

Next, you can choose to degumming the aluminum honeycomb core. The specific steps of degumming include: placing the drawn honeycomb into a continuous nitrogen protection furnace, and setting an exhaust gas recovery device in the furnace, the temperature in the furnace is 300-450 ° C, the protective atmosphere is nitrogen, and the speed is 1.2 m / min. Running for 5 to 80 minutes, preferably, the running time is 10-20 minutes, the colloid is removed from the cooling system after volatilization, and the core is removed when the predetermined temperature is reached. At this time, the core can maintain a stable connection state without Fix it again.

The degumming process is mainly to ensure that the honeycomb structure of the aluminum honeycomb core can achieve a good welding effect with the composite aluminum plate, and the odor generated by the colloidal cracking is removed in advance by degumming to prevent the colloidal cracking and volatilizing black core during the welding process, and the brazed honeycomb The board is beautiful and firm.

After the degumming treatment by the honeycomb aluminum honeycomb core, it is possible to selectively spray the flux on the surface of the aluminum honeycomb core and the blank having the solder after the degumming treatment. In the case of fluxing, a powdered or liquid flux is sprayed onto the solder layer of the honeycomb and composite aluminum sheets. In the present example, a potassium fluoroaluminate flux is preferably used as the flux.

In this example, an aluminum honeycomb core is fixed between two green sheets to form a layered structure. In the prior art, brazing can be performed after the aluminum honeycomb core is placed in a layered structure formed between two blank plates, but, in the process of brazing, it is carried out under a nitrogen atmosphere, and at the same time The higher brazing temperature results in deformation of the layered structure, which affects the quality of the final brazed product and reduces the yield. Therefore, in this solution, a card loading process is added before brazing. The aluminum honeycomb core and the blank were assembled using a plate assembly device as shown in FIG. The aluminum honeycomb core and the upper and lower composite panels are fixed on the tooling platform 1 by a clamp, and the pressing head 23 of the pressing mechanism 2 is pressed to ensure an average force of 0.1-0.3 bar. In this scenario, the specific steps for card loading are:

As shown in FIG. 6 and FIG. 8, the tooling platform 1 is first penetrated, and the thread on the screw sleeve 21 of the pressing mechanism 2 shown in FIG. 7 is initially fastened to the tooling, and then the flux is sprayed. The layered structure formed by the aluminum honeycomb core between the two blank plates is assembled and placed in the tooling platform 1, and the fixed platen is slowly pressed against the honeycomb panel. The four pins 22 of the pressing mechanism 2 are screwed out so that the ram 23 of the pressing mechanism 2 acts on the sizing plate by the high temperature resistant pressing spring 24 of the pressing mechanism 2. The compression nut 21 of the pressing mechanism is screwed with a hexagonal wrench, and at this time, the compression nut 21 and the tooling are tightened so that the compression spring contracts to generate a larger force acting on the shaping plate 3.

A layered structure formed by placing an aluminum honeycomb core between two blank plates is brazed. In the present example, the specific step of brazing comprises: placing the assembled layered structure consisting of an aluminum honeycomb core and two blank plates in a brazing furnace having nitrogen, the brazing furnace being intermittent or continuous The inert atmosphere brazing furnace has a brazing temperature of 600 ° C to 650 ° C. Preferably, the brazing temperature is controlled at 615 ° C to 640 ° C. The brazing furnace is cooled by inert gas air cooling, and the cooling interval is 640 ° C to 250 ° C.

The honeycomb panels for support or load bearing are removed from the cooling zone by final cooling.

As shown in FIG. 9 and FIG. 10, the manufacturing process of the brazed honeycomb panel in the single strip and the double strip coating mode, respectively.

The program is further illustrated by a set of examples:

The present scheme designs a method for manufacturing a brazed honeycomb panel, and the specific steps are as follows:

1): Pretreatment of composite aluminum foil and composite aluminum plate to remove oxide film and oil stain;

The composite aluminum foil is double-sided composite, the thickness is 0.08 to 0.6 mm, the inner layer is a 3 series aluminum alloy, and the solder layer is a 4 series aluminum alloy, and the composite ratio is 8%-12%. The composite aluminum plate is a single-sided composite having a thickness of 1.0 mm to 5 mm, and the solder layer is a 4-series aluminum alloy, and the composite ratio is 8% to 12%. The deoxidized film and the oil stain are washed with an alkaline aqueous solution of trisodium phosphate to add a small amount of a surfactant.

2): The composite aluminum foil enters the coating machine and is coated at a certain interval;

The glue is a resin, the hot pressing temperature is 150 to 200 degrees, and the resin glue is dried and cracked and volatilized at 250 to 450 degrees. The composite aluminum foil is double-sided composite, the thickness is 0.08 to 0.6 mm, and the inner layer is 3 series aluminum. The alloy and the solder layer are 4 series aluminum alloys, and the composite ratio is 8%-12%.

3): stacking the glued aluminum foils in a wrong position;

4): the stacked aluminum foil is placed in a hot press for hot pressing at a temperature of 150 ° C - 200 ° C;

5): cutting according to the thickness of the honeycomb after hot pressing;

6): After cutting, it is stretched into a honeycomb

The stretched honeycomb has a hexagonal shape with a side length of 3 to 35 mm.

7): spraying powder or liquid flux onto the composite aluminum plate of the honeycomb and soldered surface;

The flux is a potassium fluoroaluminate flux.

8): Fixing the honeycomb and the upper and lower composite aluminum plates with the flux surface by a clamp;

9): Drying.

The resin-based glue is cleaved and volatilized at 250 to 450 degrees.

10): brazing in the furnace, sending the clamped aluminum honeycomb panel to the furnace for welding;

The brazing furnace is a batch or continuous inert atmosphere brazing furnace with a temperature of 615 to 640 degrees.

11): Cooling

The brazing honeycomb panel is cooled by inert gas air cooling, and the cooling interval is 640 to 250 degrees.

The honeycomb panel prepared by the scheme of the present invention can ensure the metallurgical bond between the honeycomb core and the honeycomb core and the aluminum plate, overcomes the shortage of the adhesive strength of the adhesive and is not affected by the environment, is not subject to environmental constraints, and has high peel strength and resistance. Pressure, environmental protection, recyclability and many other excellent properties, while improving the positioning accuracy of the honeycomb core, reducing processing costs, and broad application prospects in rail transit, aerospace, shipbuilding, construction and other fields.

Those skilled in the art will appreciate that embodiments of the present application can be provided as a method, system, or computer program product. Thus, the present application can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment in combination of software and hardware. Moreover, the application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the present application. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

While the preferred embodiment of the present application has been described, it will be apparent that those skilled in the art can make further changes and modifications to the embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and the modifications and

It will be apparent to those skilled in the art that various modifications and changes can be made in the present application without departing from the spirit and scope of the application. Thus, it is intended that the present invention cover the modifications and variations of the present invention.

Claims

A method of manufacturing a brazed honeycomb panel, characterized in that the steps of the method comprise:

Forming a composite aluminum foil having a solder layer formed by pre-gluing and stacking into a honeycomb-shaped aluminum honeycomb core;

Pressing the aluminum honeycomb core between the two blank plates having the solder layer to form a layered structure by using a card loading device;

The layered structure fixed by the card is brazed under a nitrogen atmosphere to obtain a honeycomb panel.
The manufacturing method according to claim 1, wherein the blank plate is a single-layer or multi-layer composite aluminum plate; or

Steel plate; or,

Steel-aluminum composite board.
The manufacturing method according to claim 1, wherein the step of stretching the pre-glued stack-bonded composite aluminum foil having a solder layer into a honeycomb-shaped aluminum honeycomb core comprises:

Applying an adhesive in the form of an array on the surface of the composite aluminum foil;

At least two composite aluminum foils coated with an adhesive are stacked and fixed in such a manner that the adhesive is misaligned to form a bonded composite aluminum foil.
The manufacturing method according to claim 1, wherein the step of pressing the aluminum honeycomb core between the two blank sheets having the solder layer by the card loading device to form a layered structure comprises:

The honeycomb aluminum honeycomb core is placed between the two blank plates and fixed on the tooling platform (1) by the fixture;

Pressing the shaping plate (3) on the upper surface of the upper layer;

The layered structure is shaped by pressing the shaping plate (3) against a layered structure composed of an aluminum honeycomb core and two blank plates by a pressing mechanism (2).
The manufacturing method according to claim 4, wherein the assembling means for fixing the degummed aluminum honeycomb core between the two blank sheets having the solder layer comprises: a tooling platform (1), pressing Institution (2) and stereotype plate (3);

The tooling platform (1) is provided with a plurality of support portions for supporting the pressing mechanism (2);

The two blank plates and the aluminum honeycomb core are sequentially placed on the tooling platform (1), and the shaping plate (3) is pressed over the surface of the upper layer of the blank plate, and the shaping plate (3) is pressed by the pressing mechanism (2). On the upper layer of the embryo.
The manufacturing method according to claim 5, wherein the pressing mechanism comprises: a threaded sleeve (21), a pressing head (23) and a pressing spring (24);

The pressing spring (24) and the pressing head (23) are sequentially placed in the screw sleeve (21);

The sleeve wall of the screw sleeve (21) is further provided with a pin hole, and the pressure head (23) is restricted by a bolt (22).
The manufacturing method according to claim 1, wherein the step of brazing comprises:

Place the carded fixed layer structure in nitrogen;

Maintaining the temperature between 600 ° C and 650 ° C to braze the layered structure fixed by the card;

The brazed plate body is subjected to a cooling treatment to obtain a honeycomb plate.
The method of manufacturing of claim 1 further comprising: spraying a flux on the surface of the aluminum honeycomb core and the preform having the solder.
The method according to claim 8, wherein the flux is in the form of a powder or a liquid.
The method according to claim 8, wherein the flux is a potassium fluoroaluminate flux.
The manufacturing method according to claim 8, wherein the step of applying the adhesive in the form of an array on the surface of the composite aluminum foil comprises: pretreating the dirt on the surface of the composite aluminum foil and the blank.
The manufacturing method according to claim 8, wherein the pretreatment is to remove dirt on the composite aluminum foil and the seed board using an alkaline aqueous solution of trisodium phosphate.
The method of manufacturing according to claim 3, wherein the adhesive on the composite aluminum foil is applied in a lateral array or a longitudinal array.
The manufacturing method according to claim 3, wherein the adhesive is an epoxy, phenolic or rubber-mixed adhesive.
The manufacturing method according to claim 3, wherein the coating adhesive is an adhesive coating treatment of the composite aluminum foil by a glue applicator.
The manufacturing method according to claim 15, wherein the adhesive coating process is applied by a single rubber strip or a double rubber strip.
The manufacturing method according to claim 3, wherein the offset ratio of the adhesive misalignment is less than or equal to 2 times the width of the adhesive.
The manufacturing method according to claim 3, wherein the step of stretching the pre-glued stack-bonded composite aluminum foil having a solder layer into a honeycomb-shaped aluminum honeycomb core comprises: compounding the bonded molding The aluminum foil is hot pressed and sliced.
The manufacturing method according to claim 3, wherein the step of stretching the pre-glued stack-bonded composite aluminum foil having a solder layer into a honeycomb-shaped aluminum honeycomb core comprises: a honeycomb-shaped aluminum The honeycomb core is degummed.
The manufacturing method according to claim 19, wherein the step of degumming treatment comprises:

The aluminum honeycomb core stretched into a honeycomb shape is placed in a nitrogen gas;

Glue cracking treatment at a predetermined time and speed while maintaining the temperature at 300 ° C to 450 ° C;

The aluminum honeycomb core after the cracking treatment is subjected to a cooling treatment to obtain an aluminum honeycomb core after degumming treatment.
A honeycomb panel produced by the method of claim 1.