Treatment agent and treatment method for aluminum alloy surface texture

Abstract

The present invention provides a treatment agent and method for treating aluminum alloy surface textures. The treatment agent comprises the following components, by weight: 30%-70% pyrophosphate; 5%-50% borax; 10%-40% potassium phosphate; and 3%-20% surfactant. The treatment agent not only removes dirt from the aluminum alloy surface texture but also ensures high brightness after cleaning, leaving highlights unaffected and maintaining a uniform overall gloss.

Description

Technical Field

[0001] The present invention belongs to the technical field of aluminum alloy surface treatment, and in particular, the present invention relates to a treatment agent for aluminum alloy surface texture and a treatment method for aluminum alloy surface texture. Background Art

[0002] Aluminum alloy products represent my country's second-largest nonferrous metal industry. Sulfuric acid anodizing is widely used in aluminum surface treatment due to its low cost and mature technology. To improve the adhesion strength of aluminum alloy anodes, the anodized film is laser-engraved to create a rough surface. To prevent this from affecting the adhesion, the laser-engraved dust must be removed.

[0003] Traditional dust removal methods involve blowing with compressed air, but this method doesn't provide thorough cleaning, resulting in poor bonding, airtightness, and waterproofing. Furthermore, traditional dust blowing methods struggle to remove laser-engraved dust from finely textured surfaces, resulting in uneven surface color and black spots after cleaning. Summary of the Invention

[0004] The invention provides a treating agent for aluminum alloy surface texture, which can solve the technical problem in the prior art that the surface color of the product is uneven and partially black due to compressed air blowing.

[0005] The present invention further proposes a method for treating the surface texture of aluminum alloy, which adopts the above-mentioned treating agent.

[0006] According to a first aspect of the present invention, a treating agent for aluminum alloy surface texturing is provided, which comprises the following components by weight: pyrophosphate, 30%-70%; borax, 5%-50%; potassium phosphate, 10%-40%; and surfactant, 3%-20%.

[0007] Optionally, the pyrophosphate is sodium pyrophosphate.

[0008] Optionally, the surfactant is a nonionic surfactant.

[0009] According to a second aspect of the present invention, a method for treating the surface texture of an aluminum alloy is provided, comprising the following steps: placing an aluminum alloy product in a treatment agent for treatment, wherein the treatment agent is any of the treatment agents described above; and cleaning the aluminum alloy product after treatment with the treatment agent.

[0010] Optionally, the step of placing the aluminum alloy product in a treatment agent for treatment includes: placing the aluminum alloy product in the treatment agent at 30° C.-80° C. for 60 seconds-3600 seconds, and the concentration of the treatment agent is 30 g / L-200 g / L.

[0011] Optionally, the step of cleaning the aluminum alloy product treated with the treatment agent includes: ultrasonically washing the aluminum alloy product.

[0012] Optionally, the step of ultrasonically washing the aluminum alloy product includes: ultrasonically washing the aluminum alloy product at a temperature of 20° C.-80° C., a current of 1A-6A, and a time of 60s-3600s.

[0013] Optionally, the step of cleaning the aluminum alloy product treated with the treatment agent further comprises: washing the aluminum alloy product after ultrasonic water washing with hot water, with the washing temperature being 50° C.-95° C. and the washing time being 5s-300s.

[0014] Optionally, the step of cleaning the aluminum alloy product treated with the treatment agent includes: placing the aluminum alloy product treated with the treatment agent into a neutralization solution for neutralization.

[0015] Optionally, the neutralization solution is concentrated nitric acid with a concentration of 65%-68%.

[0016] The treating agent for aluminum alloy surface texture of the present invention can treat the surface texture of the aluminum alloy. By using a specific ratio of pyrophosphate, borax, potassium phosphate and surfactant, it can not only improve the cleaning effect of the aluminum alloy surface texture, but also ensure that the brightness of the aluminum alloy surface texture after cleaning is high, and the highlight part is not affected, and the overall gloss is uniform. It can be seen that the treating agent and treatment process of the present invention can simultaneously solve the problem of incomplete cleaning of laser engraving ash and the technical problem of uneven surface color and localized blackness of the product caused by compressed air purging in the prior art. It can not only ensure that the product has good adhesion, airtightness and waterproofness, but also ensure the brightness and color uniformity of the aluminum alloy surface texture.

[0017] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0019] Figure 1 The present invention provides a flowchart of a method for processing aluminum alloy surface texture according to an embodiment of the present invention. DETAILED DESCRIPTION

[0020] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0021] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0022] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0023] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0024] It should be noted that like reference numerals and letters refer to like items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0025] The treating agent for aluminum alloy surface texture according to an embodiment of the present invention comprises the following components by weight: pyrophosphate, 30%-70%; borax, 5%-50%; potassium phosphate, 10%-40%; and surfactant, 3%-20%.

[0026] The treatment agent of the present invention can be used to clean aluminum alloy surface textures, particularly those created by laser engraving. Specifically, to improve the adhesion strength of aluminum alloy anode surfaces, the anodic oxide film is laser engraved to create a rough surface. To prevent this from affecting the adhesion, the laser engraving dust must be removed. Therefore, the treatment agent of the present invention can treat this laser engraving dust.

[0027] That is, the treatment agent for aluminum alloy surface texturing according to an embodiment of the present invention may include pyrophosphate, borax, potassium phosphate and a surfactant, wherein the weight proportion of pyrophosphate is 30%-70%; the weight proportion of borax is 5%-50%; the weight proportion of potassium phosphate is 10%-40%; and the weight proportion of the surfactant is 3%-20%.

[0028] Specifically, in the embodiments of the present invention, the pyrophosphate content is 30%-70% by weight. It should be noted that potassium pyrophosphate can form stable complexes with calcium and magnesium ions in hard water, which helps soften the hard water and improves the cleaning effect on laser-engraved ash. Because pyrophosphate aqueous solutions are alkaline, a pyrophosphate content of less than 30% can result in poor cleaning and incomplete cleaning of the laser-engraved ash. A pyrophosphate content greater than 70% can easily cause discoloration of the aluminum alloy surface. Therefore, in this embodiment, a pyrophosphate content of 30%-70% is beneficial for ensuring a good cleaning effect and improving the surface appearance of the cleaned aluminum alloy product. For example, the pyrophosphate content can be 30%, 35%, 40%, 50%, 60%, or 70% by weight.

[0029] Furthermore, in the embodiment of the present invention, the borax content is 5%-50% by weight. During the washing process, borax acts as a water softener and pH buffer, not only improving the cleaning effect but also preventing corrosion on the aluminum alloy surface. It should be noted that if the borax content is less than 5%, the borax effect may be limited due to the low borax content. If the borax content is greater than 50%, the borax aqueous solution is alkaline, so excessive borax content can easily cause discoloration on the aluminum alloy surface. Thus, in this embodiment, the borax content of 5%-50% not only softens hard water and acts as a buffer, but also prevents discoloration on the aluminum alloy surface. For example, the borax content by weight can be 5%, 10%, 15%, 20%, 30%, 40%, 45%, or 50%.

[0030] Furthermore, in the embodiment of the present invention, the potassium phosphate content is 10%-40%. If the potassium phosphate content is less than 10%, i.e., the potassium phosphate content is too low, making it difficult to achieve a cleaning effect; if the potassium phosphate content is greater than 40%, the aluminum alloy surface after cleaning will turn dark or black. Thus, in this embodiment, a potassium phosphate content of 10%-40% not only ensures a cleaning effect on the aluminum alloy surface texture, but also effectively prevents the aluminum alloy surface texture from turning dark after cleaning. For example, the potassium phosphate content is 10%, 13%, 15%, 20%, 25%, 30%, 35%, or 40%, etc.

[0031] Furthermore, in the embodiments of the present invention, the surfactant content is 3%-20%. If the surfactant content is less than 3%, that is, the surfactant content is too low, making it difficult to achieve a cleaning effect. If the surfactant content is greater than 20%, it is likely to require a large amount of water to subsequently remove the surfactant, and it is likely to cause environmental pollution. It can be seen that in this embodiment, the surfactant content is 3%-20%, which is conducive to ensuring cleaning effect and cleaning efficiency. For example, the surfactant content is 3%, 5%, 10%, 12%, 15%, 18%, or 20%, etc.

[0032] That is, in the embodiments of the present invention, 30%-70% pyrophosphate can serve as a source of alkali and can soften hard water with metal ions and buffer the pH of the solution. For example, the pyrophosphate can be selected from sodium pyrophosphate or potassium pyrophosphate. 5%-50% borax can reduce alkalinity and protect aluminum alloy products. 10%-40% potassium phosphate can prevent the surface texture of aluminum alloys from darkening and improve the brightness of the surface texture. 3%-20% surfactant can provide a cleaning effect, such as improving oil removal.

[0033] It can be seen that the treatment agent, through the above-mentioned content ratio of pyrophosphate, borax, potassium phosphate and surfactant, can not only have a good cleaning effect on the surface texture of the aluminum alloy, but also is not easy to damage the surface texture of the aluminum alloy, and is also beneficial to ensuring the brightness of the surface texture of the aluminum alloy. For example, the treatment agent of the embodiment of the present invention can be used as a degreasing liquid, and can realize the cleaning of laser-carved ash of anodized high-gloss products.

[0034] Thus, the treatment agent for aluminum alloy surface texture according to the embodiment of the present invention can treat aluminum alloy surface texture, for example, cleaning the laser-etched dust on the surface of aluminum alloy anodes, and can replace the traditional compressed air purging process. The treatment agent for aluminum alloy surface texture according to the present invention can treat aluminum alloy surface texture. By using a specific ratio of pyrophosphate, borax, potassium phosphate and surfactant, it can not only improve the cleaning effect of the aluminum alloy surface texture, but also ensure that the brightness of the aluminum alloy surface texture after cleaning is high, achieving the effect of no impact on the highlights and uniform gloss overall. It can be seen that the treatment agent and treatment process of the present invention can simultaneously solve the problem of incomplete cleaning of laser-etched dust and the technical problem of uneven surface color and localized blackness caused by compressed air purging in the prior art, thereby ensuring that the product meets the requirements of adhesion, airtightness, water resistance, brightness, and color uniformity. It can be seen that treating the aluminum alloy surface texture with the treatment agent of the embodiment of the present invention can not only achieve adhesion, airtightness and water resistance, but also ensure the brightness and color uniformity of the aluminum alloy surface texture.

[0035] According to one embodiment of the present invention, the pyrophosphate is sodium pyrophosphate. By using sodium pyrophosphate, it can be ensured that the treatment agent does not contain strong alkaline substances and is not prone to corrosion on the surface texture of the aluminum alloy.

[0036] In some embodiments of the present invention, the surfactant is a nonionic surfactant. Nonionic surfactants are surfactants that do not ionize in aqueous solution and whose hydrophilic groups are primarily composed of a certain number of oxygen-containing groups (generally ether groups and hydroxyl groups). The use of nonionic surfactants can improve the detergency of aluminum alloys with textured hard surfaces. For example, tall oil, octylphenol polyoxyethylene ether, etc. can be used as nonionic surfactants.

[0037] The present invention also provides a method for processing the surface texture of aluminum alloy, such as Figure 1 As shown, the treatment method includes the following steps: placing the aluminum alloy product into a treatment agent for treatment, where the treatment agent is any of the treatment agents in the above embodiments; and cleaning the aluminum alloy product after being treated with the treatment agent.

[0038] In other words, when it is necessary to treat the surface texture of an aluminum alloy, the aluminum alloy product can be placed in a treatment agent. Since the treatment agent can remove dirt from the aluminum alloy surface texture and improve the brightness of the aluminum alloy surface, the aluminum alloy surface texture treated with the treatment agent has a certain cleaning effect and a higher brightness. In addition, after the treatment with the treatment agent, the aluminum alloy product can be washed to remove residual stains and residual treatment agent on the aluminum alloy surface.

[0039] In some specific embodiments of the present invention, the step of placing the aluminum alloy product in a treatment agent for treatment includes: placing the aluminum alloy product in a treatment agent at a temperature of 30°C to 80°C for 60 seconds to 3600 seconds, and the concentration of the treatment agent is 30g / L to 200g / L. If the aluminum alloy product is placed in a treatment agent at a temperature below 30°C, it is likely that the cleaning time needs to be extended; if the aluminum alloy product is placed in a treatment agent above 80°C, the aluminum alloy surface is likely to discolor; if the aluminum alloy product is placed in the treatment agent for less than 60 seconds, the single cleaning effect is likely to be poor, and more cleaning times are required; if the aluminum alloy product is placed in the treatment agent for more than 3600 seconds, it is likely to cause discoloration on the aluminum alloy surface.

[0040] It can be seen that in this embodiment, when the treatment agent is used to treat the surface texture of the aluminum alloy, the treatment conditions may include a treatment agent temperature of 30°C-80°C, a treatment time of 60s-3600s, and a treatment agent concentration of 30g / L-200g / L. For example, the treatment agent temperature is 30°C, 40°C, 50°C, 60°C, 70°C, or 80°C, the treatment time is 60s, 70s, 100s, 500s, 1000s, 1500s, 2000s, or 3600s, and the treatment agent concentration is 30g / L, 50g / L, 80g / L, 100g / L, 150g / L, or 200g / L. By adopting the above conditions, it is beneficial to ensure that the surface of the aluminum alloy does not fade during cleaning.

[0041] According to one embodiment of the present invention, the step of cleaning the aluminum alloy article after being treated with the treatment agent includes ultrasonically washing the aluminum alloy article. That is, after the aluminum alloy article is treated with the treatment agent, the ultrasonic washing can be used to thoroughly clean the surface texture of the aluminum alloy, thereby preventing incomplete cleaning of uneven areas on the surface texture of the aluminum alloy.

[0042] In some embodiments of the present invention, the step of ultrasonically washing an aluminum alloy product includes: ultrasonically washing the aluminum alloy product at a temperature of 20°C to 80°C, a current of 1A to 6A, and a duration of 60s to 3600s. If the ultrasonic washing temperature is less than 20°C, the cleaning time may be prolonged; if the ultrasonic washing temperature is greater than 80°C, the aluminum alloy surface may be easily discolored. The ultrasonic washing current is between 1A and 6A and can be adjusted based on the specific texture of the aluminum alloy surface, such as the degree of stains. If the ultrasonic washing duration is less than 60s, the single cleaning effect may be poor, requiring more cleaning cycles. If the ultrasonic washing duration is greater than 3600s, the aluminum alloy surface may be easily discolored.

[0043] As can be seen, in this embodiment, when ultrasonically washing the aluminum alloy surface texture using the ultrasonic water washing process, the specific conditions may include: a temperature of 20°C-80°C, a current of 1A-6A, and a time of 60s-3600s. For example, the temperature may be 20°C, 25°C, 30°C, 50°C, 60°C, or 80°C, the current may be 1A, 2A, 3A, 4A, 5A, or 6A, and the time may be 60s, 100s, 500s, 600s, 1000s, 2000s, 2500s, or 3600s. By adopting the above conditions, the cleaning effect of the aluminum alloy surface texture can be guaranteed.

[0044] According to one embodiment of the present invention, the step of cleaning the aluminum alloy article after treatment with the treatment agent further includes: washing the aluminum alloy article after ultrasonic washing with hot water at a temperature of 50°C to 95°C for 5 seconds to 300 seconds. If the washing temperature is less than 50°C, the washing time or frequency may be increased; if the washing temperature is greater than 95°C, the aluminum alloy surface may be discolored. If the washing time is less than 5 seconds, the cleaning effect may be poor; if the washing time is longer than 300 seconds, the cleaning efficiency may be reduced.

[0045] As can be seen, in this embodiment, after the aluminum alloy product is cleaned through the ultrasonic water washing process, the remaining stains and residual treatment agent on the aluminum alloy surface texture can be cleaned through the hot water washing process. In addition, by limiting the water washing temperature to 50°C-95°C and the time to 5s-300s, the cleaning effect can be improved and the number of cleaning times can be reduced. For example, the water washing temperature is 50°C, 60°C, 70°C, 80°C, 90°C, or 95°C, and the time is 5s, 10s, 50s, 100s, 200s, or 300s.

[0046] In some specific embodiments of the present invention, the step of cleaning the aluminum alloy product treated with the treatment agent includes: placing the aluminum alloy product treated with the treatment agent into a neutralizing solution for neutralization.

[0047] That is to say, after the surface texture of the aluminum alloy is treated with a treating agent, it is neutralized with a neutralizing solution, thereby simplifying the subsequent cleaning process.

[0048] For example, the laser-engraved product is placed in a treatment agent at 30℃-80℃ for 60s-3600s, and the concentration ratio of the treatment agent is 30g / L-200g / L; after completion, it is washed with pure water for the first time, the washing temperature is 20℃-40℃, and the time is 5s-120s; then the product is placed in a neutralizing solution at 20℃-60℃ for 30s-600s, and the concentration ratio of the neutralizing solution is 5g / L-40g / L, here is the ratio concentration; after completion, it is washed with pure water for the second time, the washing temperature is 20℃-40℃, and the time is 5s-600s; then it is ultrasonically washed with a temperature of 20℃-80℃, a current of 1A-6A, and a time of 60s-3600s; after completion, it is washed with hot water at a temperature of 50℃-95℃ and a time of 5s-300s; after the hot water washing is completed, it is dried at a temperature of 60℃-100℃ and a time of 300s-3600s.

[0049] According to one embodiment of the present invention, the neutralizing solution is concentrated nitric acid with a concentration of 65%-68%. That is, the alkaline solution can be neutralized by concentrated nitric acid.

[0050] The following describes in detail the treatment agent and treatment method for the surface texture of aluminum alloy according to the embodiments of the present invention in conjunction with specific embodiments.

[0051] Example 1

[0052] The treating agent is prepared by using pyrophosphate (weight percentage: 40%), borax (weight percentage: 25%), potassium phosphate (weight percentage: 20%), and a nonionic surfactant (octylphenol polyoxyethylene ether, weight percentage: 15%).

[0053] Place the laser-engraved product in a treatment agent at 30℃-80℃ for 60s-3600s, with a concentration of 30g / L-200g / L; after completion, perform the first pure water wash at a temperature of 20℃-40℃ and a time of 5s-120s; then place the product in a neutralizing solution (concentrated nitric acid) at 20℃-60℃ for 30s-600s, with a concentration of 5g / L-40g / L; after completion, perform a second pure water wash at a temperature of 20℃-40℃ and a time of 5s-600s; then perform ultrasonic water washing at a temperature of 35℃, a current of 5A, and a time of 1200s; after completion, perform hot water washing at a temperature of 50℃-95℃ and a time of 5s-300s; after hot water washing, perform drying at a temperature of 60℃-100℃ and a time of 300s-3600s.

[0054] Example 2

[0055] The treating agent is prepared by using pyrophosphate (weight percentage: 45%), borax (weight percentage: 20%), potassium phosphate (weight percentage: 25%), and a nonionic surfactant (octylphenol polyoxyethylene ether, weight percentage: 10%).

[0056] Place the laser-engraved product in a treatment agent at 30℃-80℃ for 60s-3600s, with a concentration of 30g / L-200g / L; after completion, perform the first pure water wash at a temperature of 20℃-40℃ and a time of 5s-120s; then place the product in a neutralizing solution (concentrated nitric acid) at 20℃-60℃ for 30s-600s, with a concentration of 5g / L-40g / L; after completion, perform a second pure water wash at a temperature of 20℃-40℃ and a time of 5s-600s; then perform ultrasonic water washing at a temperature of 35℃, a current of 5A, and a time of 1200s; after completion, perform hot water washing at a temperature of 50℃-95℃ and a time of 5s-300s; after hot water washing, perform drying at a temperature of 60℃-100℃ and a time of 300s-3600s.

[0057] It can be seen that the treatment process in Example 2 is the same as the treatment process in Example 1, and only the content ratio of the treatment agent is different.

[0058] Example 3

[0059] The treating agent is prepared by using pyrophosphate (weight percentage: 40%), borax (weight percentage: 25%), potassium phosphate (weight percentage: 20%), and a nonionic surfactant (octylphenol polyoxyethylene ether, weight percentage: 15%).

[0060] Place the laser-engraved product in a treatment agent at 30℃-80℃ for 60s-3600s, with a concentration of 30g / L-200g / L; after completion, perform the first pure water wash at a temperature of 20℃-40℃ for 5s-120s; then place the product in a neutralizing solution (concentrated nitric acid) at a temperature of 20℃-60℃ for 30s-600s, with a concentration of 5g / L-40g / L; after completion, perform a second pure water wash at a temperature of 20℃-40℃ for 5s-600s; then perform a hot water wash at a temperature of 50℃-95℃ for 5s-300s; after the hot water wash, perform a drying process at a temperature of 60℃-100℃ for 300s-3600s.

[0061] It can be seen that the composition of the treatment agent in Example 3 is the same as that of the treatment agent in Example 1. The difference from Example 1 is that the ultrasonic water washing step is not adopted in Example 3.

[0062] Comparative Example 1

[0063] The laser-engraved product with the same shape and size as Example 1 was purged with compressed air (specific conditions: outlet diameter 5 cm, distance 5-10 cm, outlet pressure 0.6 MPa, reciprocating purging 2 times).

[0064] Comparative Example 2

[0065] The treating agent is prepared by using pyrophosphate (weight percentage: 60%), borax (weight percentage: 25%), and nonionic surfactant (octylphenol polyoxyethylene ether, weight percentage: 15%).

[0066] Place the laser-engraved product in a treatment agent at 30℃-80℃ for 60s-3600s, with a concentration of 30g / L-200g / L; after completion, perform the first pure water wash at a temperature of 20℃-40℃ for 5s-120s; then place the product in a neutralizing solution (concentrated nitric acid) at a temperature of 20℃-60℃ for 30s-600s, with a concentration of 5g / L-40g / L; after completion, perform a second pure water wash at a temperature of 20℃-40℃ for 5s-600s; then perform a hot water wash at a temperature of 50℃-95℃ for 5s-300s; after the hot water wash, perform a drying process at a temperature of 60℃-100℃ for 300s-3600s.

[0067] It can be seen that compared with Example 1, the treatment processes adopted in Comparative Example 2 and Example 3 are the same, but the treatment solution in Comparative Example 2 does not contain potassium phosphate.

[0068] Comparative Example 3

[0069] The treating agent is prepared by using pyrophosphate (weight percentage: 50%), borax (weight percentage: 30%), potassium phosphate (weight percentage: 5%), and non-ionic surfactant (octylphenol polyoxyethylene ether, weight percentage: 15%).

[0070] Place the laser-engraved product in a treatment agent at 30℃-80℃ for 60s-3600s, with a concentration of 30g / L-200g / L; after completion, perform the first pure water wash at a temperature of 20℃-40℃ for 5s-120s; then place the product in a neutralizing solution (concentrated nitric acid) at a temperature of 20℃-60℃ for 30s-600s, with a concentration of 5g / L-40g / L; after completion, perform a second pure water wash at a temperature of 20℃-40℃ for 5s-600s; then perform a hot water wash at a temperature of 50℃-95℃ for 5s-300s; after the hot water wash, perform a drying process at a temperature of 60℃-100℃ for 300s-3600s.

[0071] It can be seen that the content of the potassium phosphate component of the treating agent in Comparative Example 3 is different from that of the potassium phosphate component of the treating agent in Example 3.

[0072] Comparative Example 4

[0073] The treating agent is prepared by using pyrophosphate (weight percentage: 20%), borax (weight percentage: 15%), potassium phosphate (weight percentage: 50%), and non-ionic surfactant (octylphenol polyoxyethylene ether, weight percentage: 15%).

[0074] Place the laser-engraved product in a treatment agent at 30℃-80℃ for 60s-3600s, with a concentration of 30g / L-200g / L; after completion, perform the first pure water wash at a temperature of 20℃-40℃ for 5s-120s; then place the product in a neutralizing solution (concentrated nitric acid) at a temperature of 20℃-60℃ for 30s-600s, with a concentration of 5g / L-40g / L; after completion, perform a second pure water wash at a temperature of 20℃-40℃ for 5s-600s; then perform a hot water wash at a temperature of 50℃-95℃ for 5s-300s; after the hot water wash, perform a drying process at a temperature of 60℃-100℃ for 300s-3600s.

[0075] It can be seen that the content of the potassium phosphate component of the treatment agent in Comparative Example 4 is different from that of the potassium phosphate component of the treatment agent in Example 3.

[0076] The appearance and size of the laser-engraved products used in the above embodiments and comparative examples are the same. The test data, treatment agent composition, appearance and other results of each embodiment are shown in Table 1 below.

[0077] Table 1 Test results

[0078]

[0079]

[0080] As can be seen from Table 1, when the products of each embodiment and each comparative example are placed in the same environment, the products obtained from Examples 1 to 3 have the most silvery and beautiful surfaces, with uniform color and no black spots on the surface. The product of Comparative Example 1 has an uneven surface color, with some black spots. The product of Comparative Example 2 has a relatively uniform surface color, but is overall black. The surface color of the product of Comparative Example 3 is relatively uniform, but some spots are black, and the degree of blackness is lower than that of Comparative Example 2. The surface color of the product of Comparative Example 4 is relatively uniform, but some spots are black, and the degree of blackness is higher than that of Comparative Example 2. It can be seen that whether the potassium phosphate content is less than 10% or greater than 40%, the product surface will become black.

[0081] In conjunction with Table 1, by comparing Example 1 and Example 3, it can be seen that Example 1 has a better cleaning effect after ultrasonic water washing. By comparing Examples 1 to 3 with the traditional method provided in Comparative Example 1, Examples 1 to 3 have a significant dust removal effect and can be applied to the post-anodizing laser carving dust cleaning process, with strong product stability and high yield. By comparing Example 3 with the method provided in Comparative Example 2, the product of Example 3 has high brightness and no impact on the highlights, while the product of Comparative Example 2 has partially turned black. By comparing Example 3 with Comparative Examples 2 to 4, it can be seen that the addition of 10%-40% potassium phosphate to the treatment agent of Example 3 can effectively prevent the surface of the cleaned product from turning black.

[0082] In summary, the treating agent for aluminum alloy surface texture according to the embodiment of the present invention, by adopting a specific ratio of pyrophosphate, borax, potassium phosphate and surfactant, can not only improve the cleaning effect of the aluminum alloy surface texture, but also ensure that the brightness of the aluminum alloy surface texture after cleaning is high, and achieve the effect of no impact on the highlight part and uniform overall gloss.

[0083] Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It should be understood by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A treatment agent for aluminum alloy surface texture, characterized in that, By weight percentage, it contains the following components: pyrophosphate, 30%-70%; Borax, 5%-50%; Potassium phosphate, 10%-40%; Surfactant, 3%-20%.

2. The treating agent for aluminum alloy surface texture according to claim 1, characterized in that The pyrophosphate is sodium pyrophosphate.

3. The treating agent for aluminum alloy surface texture according to claim 1, characterized in that The surfactant is a nonionic surfactant.

4. A method for processing the surface texture of aluminum alloy, characterized in that: The steps include: placing the aluminum alloy product into a treatment agent for treatment, wherein the treatment agent is the treatment agent according to any one of claims 1 to 3; The aluminum alloy product treated with the treatment agent is cleaned.

5. The method for treating the surface texture of aluminum alloy according to claim 4, characterized in that: The step of placing the aluminum alloy product into a treatment agent for treatment comprises: The aluminum alloy product is placed in the treatment agent at 30° C.-80° C. for 60 seconds-3600 seconds, and the concentration of the treatment agent is 30 g / L-200 g / L.

6. The method for treating the surface texture of aluminum alloy according to claim 4, characterized in that: The step of cleaning the aluminum alloy product after being treated with the treatment agent comprises: The aluminum alloy product is ultrasonically washed.

7. The method for treating the surface texture of aluminum alloy according to claim 6, characterized in that: The step of ultrasonically washing the aluminum alloy product comprises: The aluminum alloy product is ultrasonically washed with water at a temperature of 20° C.-80° C., a current of 1A-6A, and a time of 60s-3600s.

8. The method for treating the surface texture of aluminum alloy according to claim 7, characterized in that: The step of cleaning the aluminum alloy product after being treated with the treatment agent further comprises: The aluminum alloy product after the ultrasonic water washing is washed with hot water at a water washing temperature of 50° C.-95° C. for 5 seconds-300 seconds.

9. The method for treating the surface texture of an aluminum alloy according to claim 4, 6 or 8, characterized in that: The step of cleaning the aluminum alloy product after being treated with the treatment agent comprises: The aluminum alloy product treated with the treating agent is placed in a neutralizing solution for neutralization.

10. The method for treating the surface texture of aluminum alloy according to claim 8, characterized in that: The neutralizing solution is concentrated nitric acid with a concentration of 65%-68%.

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