CN110756997A - Surface treatment method for improving bonding strength of aluminum foil - Google Patents
Surface treatment method for improving bonding strength of aluminum foil Download PDFInfo
- Publication number
- CN110756997A CN110756997A CN201911086798.5A CN201911086798A CN110756997A CN 110756997 A CN110756997 A CN 110756997A CN 201911086798 A CN201911086798 A CN 201911086798A CN 110756997 A CN110756997 A CN 110756997A
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- aluminum foil
- laser
- bonding strength
- marking machine
- surface treatment
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/352—Working by laser beam, e.g. welding, cutting or boring for surface treatment
- B23K26/3568—Modifying rugosity
- B23K26/3584—Increasing rugosity, e.g. roughening
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/362—Laser etching
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/08—Non-ferrous metals or alloys
- B23K2103/10—Aluminium or alloys thereof
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention discloses a surface treatment method for improving the bonding strength of an aluminum foil, which comprises the following steps: clamping the aluminum foil; (ii) setting a laser scanning area; (iii) laser marking machine parameter setting. The invention provides a surface treatment method for improving the bonding strength of an aluminum foil, which is characterized in that a laser marking machine is utilized, and EzCad2 analysis software is adopted for operation, so that single-side laser treatment is carried out on the aluminum foil; the surface roughness of the single surface of the aluminum foil can be uniformly improved, the bonding strength is enhanced, the performance of the aluminum foil is not damaged, and the subsequent problems of environment-friendly process, good consistency, no sewage discharge and the like are solved.
Description
Technical Field
The invention belongs to the field of laser application, and particularly relates to a surface treatment method for improving the bonding strength of an aluminum foil.
Background
The surface treatment process before the bonding of the aluminum foil is very important, and the surface appearance and the roughness directly influence the bonding performance. The traditional surface treatment process of the aluminum foil is mostly chemical means such as anodic oxidation and the like, the working procedures are complicated, and the repeatability and the consistency of the process are difficult to ensure aiming at the soft material of the aluminum foil. In addition, the anodic oxidation and chemical oxidation processes cannot be free of corrosive media such as acid and alkali, the pollution is high, the corrosion to metal is serious, and the metal can be discharged only after being treated to reach the specified standard, so that the production cost is greatly increased.
Disclosure of Invention
The invention is provided for overcoming the defects in the prior art, and aims to provide a surface treatment method for improving the bonding strength of an aluminum foil.
The invention is realized by the following technical scheme:
a surface treatment method for improving the bonding strength of an aluminum foil comprises the following steps:
clamping of aluminum foil
Horizontally laying and flattening the aluminum foil, and adjusting the vertical distance between the aluminum foil and the laser lens until the red light of the laser marking machine is clearly displayed;
(ii) setting of laser scanning area
Selecting a region to be processed by using operating software of a laser marking machine, setting a processing area, and filling 45-degree and 135-degree oblique lines with the interval of 1mm in the aluminum foil processing region;
(iii) laser marking machine parameter setting
Setting the laser power, the laser frequency and the laser scanning speed of the laser marking machine;
(iv) laser treatment
After the parameter setting is completed, laser processing is started.
In the technical scheme, the model of the laser marking machine is CT-MF 20.
In the above technical solution, the operating software is EzCad2 analysis software.
In the above technical scheme, the laser power of the laser marking machine is 40W ± 5W.
In the above technical scheme, the laser frequency of the laser marking machine is 20 KHz.
In the above technical scheme, the laser scanning speed of the laser marking machine is 700mm-1。
The invention has the beneficial effects that:
the invention provides a surface treatment method for improving the bonding strength of an aluminum foil, which utilizes a laser marking machine and adopts EzCad2 analysis software operation to carry out single-side laser treatment on the aluminum foil, and improves the surface roughness of the aluminum foil on the premise of not damaging the performance of an aluminum foil substrate, thereby enhancing the bonding strength of the aluminum foil.
Drawings
FIG. 1 is a graph of experimental data showing the effect of laser scanning speed on the surface topography of aluminum foil in the present invention.
The laser scanning speeds are respectively as follows: a: 300mm · s-1, b: 500mm · s-1, c: 700mm · s-1, d: 900mm · s-1, e: 1100mm · s-1, f: 1300mm s-1.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution of the surface treatment method for improving the adhesion strength of an aluminum foil according to the present invention is further described below by referring to the drawings of the specification and the specific embodiments.
A surface treatment method for improving the bonding strength of an aluminum foil comprises the following steps:
clamping of aluminum foil
Horizontally laying and flattening the aluminum foil, and adjusting the vertical distance between the aluminum foil and the laser lens until the red light of the laser marking machine is clearly displayed;
(ii) setting of laser scanning area
Selecting a region to be processed by using EzCad2 analysis software of a laser marking machine, setting a processing area, and filling 45-degree and 135-degree oblique lines with the interval of 1mm in an aluminum foil processing region;
(iii) laser marking machine parameter setting
Setting the laser power of the laser marking machine to be 40W +/-5W, the laser frequency to be 20KHz and the laser scanning speed to be 700mm-1；
(iv) laser treatment
After the parameter setting is completed, laser processing is started.
The model of the laser marking machine is CT-MF 20.
Aiming at the characteristics of thin and crisp aluminum foil and easy wrinkle and fouling on the surface, the aluminum foil clamping and laser processing parameters need to be searched and optimized, wherein the parameters comprise laser frequency, laser power, laser scanning speed and the like.
Firstly, determining laser power, wherein for a fixed material, the laser frequency has an optimal processing interval, the frequency is too low, the average power is low, the heat influence is small, and the surface of an aluminum foil cannot be processed; the frequency is too high, although the average power is higher, the peak power is lower, and only shallow notches are generated, and in the invention, the laser power is controlled to be 40W +/-5W; secondly, optimizing the laser frequency, wherein for fixed materials, the laser frequency has an optimal processing interval, the frequency is too low, the average power is low, the heat influence is small, and the surface of the aluminum foil cannot be processed; the frequency is too high, although the average power is higher, the peak power is lower, and only shallow nicks are generated, in the invention, the laser frequency is 20 KHz; finally, the laser scanning speed is determined, and in the invention, the laser scanning speed is 700mm-1Under the lower laser scanning speed, the aluminum foil processing surface is more uniform, and along with the increase of the laser speed, the surface roughness of the aluminum foil is gradually reduced, because the laser energy can be controlled by changing the laser power, and the laser energy can also be controlled by changing the marking speed, namely the laser energy is controlled by changing the deflection speed of the galvanometer. Marking a certain vector, wherein when the marking speed is gradually increased, the interaction time of the laser beam and the material is shorter, so that the marking depth is gradually reduced; when the marking speed is too high, the interaction time of the laser beam and the material is extremely short, the surface of the material cannot absorb the laser energy in time, so that the marking trace is not obvious, and the surface roughness is reduced.
Example 1
The aluminum foil with the designation 1100 needs to be bonded with a composite material, and the surface treatment of the aluminum foil is an important process for determining the bonding strength. According to the invention, the laser marking machine is adopted to carry out surface roughening treatment on the aluminum foil, so that the bonding strength ratio of the aluminum foil and the composite material after treatment is greatly improved.
The surface of the aluminum foil is processed by adopting a CT-MF20 laser marking machine, and the operation is carried out by using EzCad2 analysis software, wherein the main parameters of the processing technology are as follows:
laser power: 40W
Laser frequency: 20kHz
Scanning speed: 700 mm.s-1
The aluminum foil is processed by adopting the laser method, and the surface roughness of the aluminum foil can be improved on the premise of not damaging the performance of an aluminum foil substrate by adjusting parameters such as laser power, laser frequency, laser scanning speed and the like, so that the bonding strength of the aluminum foil is enhanced.
The invention can uniformly improve the surface roughness of the single surface of the aluminum foil, enhance the bonding strength, does not damage the performance of the aluminum foil, and has the advantages of environment-friendly process, good consistency, no subsequent problems of sewage discharge and the like. The single lap shear strength test results show that the aluminum foil after laser treatment is increased by 300-600% compared with the untreated aluminum foil and increased by 100-150% compared with the (sulfuric acid + phosphoric acid) anodic oxidation aluminum foil.
The applicant declares that the above description is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and it should be understood by those skilled in the art that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are within the scope and disclosure of the present invention.
Claims (6)
1. A surface treatment method for improving the bonding strength of an aluminum foil is characterized by comprising the following steps: the method comprises the following steps:
clamping of aluminum foil
Horizontally laying and flattening the aluminum foil, and adjusting the vertical distance between the aluminum foil and the laser lens until the red light of the laser marking machine is clearly displayed;
(ii) setting of laser scanning area
Selecting a region to be processed by using operating software of a laser marking machine, setting a processing area, and filling 45-degree and 135-degree oblique lines with the interval of 1mm in the aluminum foil processing region;
(iii) laser marking machine parameter setting
Setting the laser power, the laser frequency and the laser scanning speed of the laser marking machine;
(iv) laser treatment
After the parameter setting is completed, laser processing is started.
2. The surface treatment method for improving the bonding strength of aluminum foil according to claim 1, wherein: the model of the laser marking machine is CT-MF 20.
3. The surface treatment method for improving the bonding strength of aluminum foil according to claim 1, wherein: the operating software is EzCad2 analysis software.
4. The surface treatment method for improving the bonding strength of aluminum foil according to claim 1, wherein: the laser power of the laser marking machine is 40W +/-5W.
5. The surface treatment method for improving the bonding strength of aluminum foil according to claim 1, wherein: the laser frequency of the laser marking machine is 20 KHz.
6. The surface treatment method for improving the bonding strength of aluminum foil according to claim 1, wherein: the laser scanning speed of the laser marking machine is 700mm-1。
Priority Applications (1)
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| CN201911086798.5A CN110756997B (en) | 2019-11-08 | 2019-11-08 | Surface treatment method for improving bonding strength of aluminum foil |
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| CN201911086798.5A CN110756997B (en) | 2019-11-08 | 2019-11-08 | Surface treatment method for improving bonding strength of aluminum foil |
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| CN110756997A true CN110756997A (en) | 2020-02-07 |
| CN110756997B CN110756997B (en) | 2022-09-13 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111674118A (en) * | 2020-06-09 | 2020-09-18 | 陕西卫宁电子材料有限公司 | Preparation method of aluminum-based microwave copper-clad plate and aluminum-based microwave copper-clad plate prepared by same |
| CN112779413A (en) * | 2020-12-24 | 2021-05-11 | 山东大学 | Load transfer type unequal-strength laser impact method |
| CN114603259A (en) * | 2022-01-20 | 2022-06-10 | 维达力实业（赤壁）有限公司 | Method for treating surface of curtain coating cover plate |
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| CN110756997B (en) | 2022-09-13 |
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