Process for anodizing the surface of a shell

Abstract

The application discloses a shell surface anode laser spot technology, comprising the following steps: sand blasting treatment is carried out on the shell surface; the sand blasted shell surface is subjected to a first anodization treatment; the shell surface after the anodization treatment is subjected to laser texture processing; the shell surface after the laser texture processing is subjected to a second anodization treatment to generate a final shell surface; wherein the shell surface after the anodization treatment is subjected to laser texture processing, and the laser texture processing at least includes no less than three times of laser treatment, and the power of at least one of the three times of laser treatment is different from the power of the rest of the laser treatment. Through the shell surface anode laser spot technology provided by the application, the laser texture processing is divided into multiple times of laser treatment, the power in the laser parameter is changed, the controllability of the final shell surface spot is improved, the visual impact force of the spot is improved, and the mass production of the shell surface laser spot is realized.

Description

Technical Field

[0001] This application relates to the field of metal processing technology, and in particular to a process for MAO laser detonation on the surface of a shell. Background Technology

[0002] In metal surface treatment processes, sandblasting is widely used to increase surface roughness to improve the adhesion of subsequent coatings or achieve specific aesthetic effects. After sandblasting, a large number of fine sand particles remain on the metal surface, which are prone to detachment or wear during subsequent use. To enhance the stability of the sand particles and maintain their rough texture, anodizing is typically used to form a dense anodized film (approximately 5–11 μm thick) on the surface of the sand particles. This film not only protects the sand particles but also imparts a certain degree of corrosion resistance and hardness to the metal surface. To further optimize the appearance of the metal surface, existing technologies use laser equipment to locally irradiate the sandblasted and anodized metal surface. The high energy of the laser causes the anodized film and the underlying metal to ablate or melt, thus forming a "bomb-like" texture. This process can create unique visual effects on rough anodized surfaces, enhancing the aesthetics and texture of the product.

[0003] In the process of developing the existing technology, the inventors discovered that:

[0004] Laser equipment suffers from several drawbacks in creating the ablation or melting effect of explosion points. These drawbacks include low controllability of the explosion points and weak visual impact, hindering the mass production of laser-generated explosion points on metal surfaces. Specifically, the number of explosion points is difficult to precisely control, leading to uneven surface texture distribution; the shape and size of the explosion points cannot be effectively defined, potentially resulting in points that are too large, too small, or irregularly shaped; a lack of distinct graininess results in insufficient three-dimensionality and layering of the surface texture, leading to a flat visual effect; and poor reflectivity and insufficient brightness in the explosion point area prevent the formation of a clear contrast between light and dark, weakening the overall visual impact.

[0005] Therefore, there is an urgent need to develop a technical solution that can improve the explosion effect and thus achieve mass production of laser explosion on the surface of metal shells. This solution addresses the problems of poor explosion effect in existing technologies, such as low controllability and weak visual impact, during the process of laser equipment forming explosion effects through ablation or melting. Summary of the Invention

[0006] In order to overcome the defects and shortcomings of the existing technology, this application provides a technical solution that can improve the explosion effect and thus realize the mass production of laser explosion on the surface of metal shells. This solution addresses the problems of poor explosion effect in the existing technology, such as low controllability of explosion points and weak visual impact, during the process of laser equipment forming explosion effects through ablation or melting.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a process for anodizing laser detonation on the surface of a shell, comprising the following steps:

[0008] The surface of the casing is sandblasted.

[0009] The surface of the shell after sandblasting is subjected to anodizing treatment.

[0010] The surface of the anodized shell is then subjected to laser texturing.

[0011] The surface of the shell after laser texture processing is subjected to a secondary anodizing treatment to generate the final shell surface;

[0012] The process of laser texturing the surface of the anodized shell includes at least three laser treatments, with at least one laser treatment having a different power than the others.

[0013] Before sandblasting the housing surface, the process also includes cleaning the housing surface and then polishing the cleaned housing surface.

[0014] The shell surface is sandblasted, specifically including: frontal pressure 2.2 bar, conveyor belt speed limit 20 Hz, and oscillation frequency 35 times / min.

[0015] The surface of the shell after sandblasting is subjected to an anodizing treatment, specifically including: chemical polishing of the surface of the shell after sandblasting; electrolytic oxidation of the surface of the shell; sealing treatment of the oxidized surface of the shell; and drying treatment of the sealed surface of the shell.

[0016] The surface of the anodized housing is then subjected to laser texturing, specifically including: First laser processing: power 30W, scanning speed 1000mm / s, pulse width 1ms, frequency 50kHz; Second laser processing: power 30W, scanning speed 1000mm / s, pulse width 1ms, frequency 50kHz; Third laser processing: power 50W, scanning speed 1000mm / s, pulse width 1ms, frequency 50kHz; Fourth laser processing: power 50W, scanning speed 1000mm / s, pulse width 1ms, frequency 50kHz; Fifth laser processing: power 75W, scanning speed 1000mm / s, pulse width 1ms, frequency 50kHz; Sixth laser processing: power 75W, scanning speed 1000mm / s, pulse width 1ms, frequency 50kHz.

[0017] The secondary anodizing treatment of the shell surface after laser texture processing specifically includes: removing the film from the shell surface after laser texture processing; removing dust from the shell surface after film removal; performing secondary anodizing on the shell surface after dust removal; dyeing the shell surface after secondary anodizing; sealing the shell surface after dyeing; and drying the shell surface after sealing. The film removal time is 40 seconds, the dust removal time is 30 seconds, the secondary anodizing time is 45 minutes, the dyeing time is 5 minutes, the sealing time is 20 minutes, and the drying temperature is 80-100℃ for 20 minutes.

[0018] A laser device is used to perform laser texture processing on the surface of the anodized housing. Specifically, the laser device includes: a support platform for placing the housing surface; a galvanometer for emitting laser light onto the housing surface; an adjustment component for adjusting the angle at which the galvanometer emits laser light; a laser device located below the support platform and connected to the galvanometer, used to adjust the laser parameters emitted to the galvanometer; and a control component connected to the adjustment component and the laser device, used to issue commands to the adjustment component to adjust the galvanometer angle and, through the laser device, adjust the laser parameters emitted by the galvanometer to the housing surface.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] The process of anodized laser detonation on the shell surface provided in this application involves multiple laser processing steps to create laser textures. By changing the power in the laser parameters, the controllability of the detonation points on the final shell surface is improved, as well as the visual impact of the detonation points is enhanced, thereby enabling the mass production of laser detonation points on the shell surface. Attached Figure Description

[0021] Figure 1 This invention provides a schematic diagram of the process flow for anodizing laser detonation on the surface of a shell. Detailed Implementation

[0022] The present invention will be further described below with reference to embodiments.

[0023] This invention provides a process for anodizing laser detonation on the surface of a housing. By processing the surface of the housing using this process, products with controllable detonation points and strong visual impact can be mass-produced.

[0024] As one of the preferred solutions of this technical solution, the following steps are included:

[0025] S11: Sandblasting treatment is performed on the surface of the housing.

[0026] Specifically, before sandblasting the casing surface, the process includes cleaning the casing surface and then polishing it. That is, after receiving the metal casing, the protective film on the metal surface is removed. Then it is cleaned, and after cleaning, it is polished. It should be understood that the polishing process described here can be simple polishing, or it can be achieved by first grinding and then polishing, i.e., grinding to achieve a smooth finish.

[0027] The sandblasting treatment performed on the shell surface after polishing is mainly to roughen the metal surface and form a uniform sand grain adhesion layer. The parameters for the sandblasting treatment of the shell surface in this application specifically include: frontal pressure 2.2 bar, conveyor belt speed limit 20 Hz, and oscillation frequency 35 times / min.

[0028] S12: Perform an anodizing treatment on the surface of the shell after sandblasting.

[0029] The purpose of anodizing is primarily to generate a dense oxide film on the rough shell surface, fixing the sand grain structure. This process mainly protects the rough structure formed by sandblasting, preventing sand grains from falling off, and also provides an intermediate layer for subsequent laser ablation.

[0030] The anodizing process mainly includes chemical polishing of the sandblasted shell surface for 1 minute, electrolytic oxidation of the shell surface for 30 minutes, sealing treatment of the oxidized shell surface for 5 minutes, and drying treatment of the sealed shell surface for 20 minutes.

[0031] S13: Perform laser texturing on the surface of the anodized shell.

[0032] Specifically, in the past, when laser equipment was used to perform laser detonation, it could only produce detonation spots. The number, size and shape of the detonations, the texture of the particles, and the brightness of the detonations could not be controlled. As a result, the detonation effect was poor and it was impossible to mass-produce laser detonation on the surface of metal shells.

[0033] In this application, the laser texture processing includes at least three laser treatments, with at least one laser treatment having a different power than the others. In other words, this application achieves the effect through multiple laser treatments, but the laser parameters for each laser treatment are either the same as or different from the power of the remaining laser treatments, thus ensuring the subsequent batch processing of the shell surface to achieve the desired deburring effect.

[0034] Specifically, a laser device is used to perform laser texture processing on the surface of the anodized housing. The laser device includes: a support platform for placing the housing surface; a galvanometer for emitting laser light onto the housing surface; an adjustment component for adjusting the angle at which the galvanometer emits laser light; a laser device located below the support platform and connected to the galvanometer, used to adjust the laser parameters emitted to the galvanometer; and a control component connected to the adjustment component and the laser device, used to issue commands to the adjustment component to adjust the galvanometer angle and to adjust the laser parameters emitted to the housing surface by the galvanometer through the laser device.

[0035] Specifically, the laser parameters of a laser device include at least the laser power, laser scanning speed, laser pulse width, and laser frequency.

[0036] In this application, the laser equipment performs laser texture processing on the surface of the anodized housing, specifically including:

[0037] The first laser treatment, with a power of 30W, a scanning speed of 1000mm / s, a pulse width of 1ms, and a frequency of 50kHz, removes the anode protective layer.

[0038] The second laser treatment, with a power of 30W, a scanning speed of 1000mm / s, a pulse width of 1ms, and a frequency of 50kHz, achieves laser burst point shaping.

[0039] The third laser treatment, with a power of 50W, a scanning speed of 1000mm / s, a pulse width of 1ms, and a frequency of 50kHz, enhances the granular feel of the laser burst points.

[0040] The fourth laser treatment, with a power of 50W, a scanning speed of 1000mm / s, a pulse width of 1ms, and a frequency of 50kHz, removes the anode film and eliminates blackening.

[0041] The fifth laser treatment, with a power of 75W, a scanning speed of 1000mm / s, a pulse width of 1ms, and a frequency of 50kHz, brightens the laser burst point.

[0042] The sixth laser treatment, with a power of 75W, a scanning speed of 1000mm / s, a pulse width of 1ms, and a frequency of 50kHz, enhances the brightness of the laser burst point.

[0043] It can be seen that by adjusting the laser parameters in the laser equipment and performing repeated lasers, the gloss and particle size of the laser marks on the shell surface are significantly improved, thereby enabling mass production of laser marks on the shell surface.

[0044] S14: Perform a secondary anodizing treatment on the surface of the shell after laser texture processing to generate the final shell surface.

[0045] The secondary anodizing process is mainly to seal the laser texture, making the edges of the explosion points sharp and not rough, and improving the overall wear resistance of the shell surface.

[0046] The secondary anodizing process mainly includes: removing the coating from the laser-textured shell surface for 40 seconds; removing dust from the shell surface for 30 seconds; performing a secondary anodizing process on the shell surface after dust removal for 45 minutes; dyeing the shell surface after the secondary anodizing process for 5 minutes; sealing the shell surface after the dyeing process for 20 minutes; and drying the shell surface after the sealing process at a temperature of 80-100℃ for 20 minutes.

[0047] In summary, by improving the laser processing of the shell surface, performing laser processing multiple times with different laser parameters for each processing, the controllability of the final explosion points on the shell surface is improved, and the visual impact of the explosion points is enhanced, thereby enabling the mass production of laser explosion points on the shell surface.

[0048] The above description is merely a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. Any simple equivalent changes and modifications made in accordance with the claims and specification of the present invention are still within the scope of the claims. Furthermore, the abstract and headings are merely for assisting in patent document searching and are not intended to limit the scope of the present invention.

Claims

1. A process for anodizing a surface of a housing by laser shot peening, characterized in that The process includes the following steps: The surface of the casing is sandblasted. The surface of the shell after sandblasting is subjected to anodizing treatment. The surface of the anodized shell is then subjected to laser texturing. The surface of the shell after laser texture processing is subjected to a secondary anodizing treatment to generate the final shell surface; The anodizing treatment of the sandblasted shell surface specifically includes: chemical polishing of the sandblasted shell surface; electrolytic oxidation of the shell surface; sealing treatment of the oxidized shell surface; and drying treatment of the sealed shell surface. The chemical polishing time is 1 min, the electrolytic oxidation time is 30 min, the sealing treatment time is 5 min, and the drying time is 20 min. The surface of the anodized shell is subjected to laser texturing, which includes at least three laser treatments, wherein the power of at least one of the three laser treatments is different from the power of the other laser treatments. The secondary anodizing treatment of the shell surface after laser texture processing specifically includes: removing the film from the shell surface after laser texture processing; removing dust from the shell surface after film removal; performing secondary anodizing on the shell surface after dust removal; dyeing the shell surface after secondary anodizing; sealing the shell surface after dyeing; and drying the shell surface after sealing. The film removal time is 40 seconds, the dust removal time is 30 seconds, the secondary anodizing time is 45 minutes, the dyeing time is 5 minutes, the sealing time is 20 minutes, and the drying temperature is 80-100℃ for 20 minutes.

2. The process for laser shot peening of a surface of a shell according to claim 1, wherein Before sandblasting the housing surface, the process also includes cleaning the housing surface and then polishing the cleaned housing surface.

3. The process for laser shot peening of a surface of a shell according to claim 1, wherein Laser texturing is performed on the surface of the anodized shell, specifically including: First laser treatment: power 30W, scanning speed 1000mm / s, pulse width 1ms, frequency 50kHz; Second laser processing: power 30W, scanning speed 1000mm / s, pulse width 1ms, frequency 50kHz; Third laser processing: power 50W, scanning speed 1000mm / s, pulse width 1ms, frequency 50kHz; Fourth laser treatment: power 50W, scanning speed 1000mm / s, pulse width 1ms, frequency 50kHz; Fifth laser treatment: power 75W, scanning speed 1000mm / s, pulse width 1ms, frequency 50kHz; Sixth laser processing: power 75W, scanning speed 1000mm / s, pulse width 1ms, frequency 50kHz.

4. The process for laser surface anodization of a shell according to any one of claims 1-3, characterized in that The surface of the anodized shell is textured using laser equipment, specifically including: A support platform for placing the housing; A galvanometer is used to project laser light onto the surface of the housing. An adjustment component is used to adjust the angle at which the galvanometer emits laser light; A laser device located below the support platform and connected to the galvanometer adjusts the laser parameters emitted to the galvanometer. The control component connected to the adjustment component and the laser device is used to issue commands to the adjustment component to adjust the galvanometer angle and to adjust the laser parameters emitted by the galvanometer to the surface of the housing via the laser device.

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