Micro blade surface treatment process

Abstract

The invention relates to a micro blade surface treatment process which comprises the following steps: S1, soaking a micro blade in a first acidic cleaning solution, and then washing off the first acidic cleaning solution; s2, the tiny blade treated in the step S1 is placed in an alkaline cleaning solution to be soaked, and then the alkaline cleaning solution is washed away; s3, the tiny blade treated in the S2 is placed in a second acid cleaning solution to be subjected to ultrasonic cleaning, and then the second acid cleaning solution is washed away; and S4, the tiny blade treated in the step S3 is put into water to be subjected to ultrasonic cleaning, and the tiny blade is obtained after drying. Impurities such as an oxide layer and greasy dirt on the surface of the blade are removed through the first acid cleaning solution, the alkaline cleaning solution can neutralize acid residues and further clean greasy dirt and grease, the second acid cleaning solution can deeply clean fine parts of the blade through ultrasonic cleaning, and the second acid cleaning solution can be cleaned through ultrasonic washing. And finally drying to ensure that the blade surface is clean and residue-free.

Description

Technical Field

[0001] The invention relates to the technical field of tiny blades, and in particular to a surface treatment process of a tiny blade. Background Art

[0002] The blade material commonly used in the field of precision machining is 32Cr13Mo, which is a martensitic stainless steel. This material has the advantages of high hardness, good corrosion resistance and good wear resistance. The blade thickness is usually greater than or equal to 0.2mm. After laser cutting, oxidation and burrs are relatively serious. Magnetic polishing or electrochemical polishing is generally used for cleaning and deburring.

[0003] However, when the blade thickness is less than or equal to 0.15 mm, the blade is a tiny blade. Figure 1-2 , magnetic polishing will damage the blade, causing defects such as edge curling or blade gaps. Electrochemical polishing is not easy to clamp due to the small size of the product, and multiple auxiliary processes are required to achieve electrochemical polishing of the product, which not only makes the entire production process slow and inefficient, but also increases the production cost and time cost. How to overcome these technical bottlenecks has become a key issue that needs to be solved urgently. Summary of the invention

[0004] The purpose of the present invention is to provide a micro blade surface treatment process in order to overcome at least one of the defects of the prior art.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] A micro blade surface treatment process comprises the following steps:

[0007] S1, placing the micro blade into a first acidic cleaning solution for soaking, and then washing away the first acidic cleaning solution;

[0008] S2, placing the micro blade treated in S1 into an alkaline cleaning solution for soaking, and then washing away the alkaline cleaning solution;

[0009] S3, placing the micro blade treated by S2 into a second acidic cleaning solution for ultrasonic cleaning, and then washing away the second acidic cleaning solution;

[0010] S4, placing the micro blade treated by S3 into water for ultrasonic cleaning, and drying to obtain a micro blade with a good surface treatment.

[0011] Further, in S1, the first acid cleaning solution comprises the following components by mass fraction: 26-28% nitric acid, 5-6% hydrofluoric acid, 3-4% activator, 2-3% corrosion inhibitor, and 59-64% water. Preferably, the activator is urea, and the corrosion inhibitor is glycerol.

[0012] Furthermore, in S1, the immersion time of the micro blade is 20s-5min.

[0013] Furthermore, in S2, the alkaline cleaning solution comprises the following components in mass fractions: 18-20% sodium hydroxide and 80-82% water.

[0014] Furthermore, in S2, the immersion time of the micro blade is 20s-5min.

[0015] Furthermore, in S3, the second acidic cleaning solution comprises the following components in mass fractions: 20-25% phosphoric acid, 10-15% ethylene glycol monobutyl ether, and 60-70% hot water; the water temperature of the hot water is 50°C-95°C.

[0016] Furthermore, in S3, the ultrasonic cleaning time is 10-30 minutes.

[0017] Furthermore, in S4, the ultrasonic cleaning time is 10-30 minutes, and the water is replaced every 10 minutes.

[0018] Furthermore, in S4, the drying step is specifically as follows: dehydrating the ultrasonically cleaned micro blades with anhydrous ethanol, and then placing the product in an infrared oven for drying.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] (1) The present invention provides a micro blade surface treatment process, in which the micro blade is sequentially subjected to acid washing, alkaline washing, ultrasonic acid cleaning liquid washing and ultrasonic water washing. The first acid washing is first used to remove impurities such as oxide layer, cutting burrs, hot slag and the like on the blade surface. The second alkaline solution washing can neutralize the acid residue and further clean oil and grease. The third acid cleaning solution ultrasonic cleaning can deeply clean the fine parts of the blade. The ultrasonic water washing can clean the residue of the third acid cleaning solution. The final drying ensures that the blade surface is clean and free of residue.

[0021] (2) The present invention provides a micro blade surface treatment process, wherein the defect rate of the micro blades cleaned by the process is between 0-0.05%, the sampling yield rate is within an acceptable range, and the product can be mass-produced to meet the quality requirements.

[0022] (3) The present invention provides a micro blade surface treatment process, through which batch production can be achieved, and 1000-2000 pc of products can be processed in one batch, greatly shortening the production cycle.

[0023] (4) The present invention provides a micro blade surface treatment process, and the product treated by this process has better effect and better consistency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A front view of a micro blade of the present invention;

[0025] Figure 2 It is a side view of the micro blade of the present invention. DETAILED DESCRIPTION

[0026] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0027] The present invention provides a micro blade surface treatment process, comprising the following steps:

[0028] S1, placing the micro blade into a first acidic cleaning solution for soaking, and then washing away the first acidic cleaning solution;

[0029] S2, placing the micro blade treated in S1 into an alkaline cleaning solution for soaking, and then washing away the alkaline cleaning solution;

[0030] S3, placing the micro blade treated by S2 into a second acidic cleaning solution for ultrasonic cleaning, and then washing away the second acidic cleaning solution;

[0031] S4, placing the micro blade treated by S3 into water for ultrasonic cleaning, and drying to obtain a micro blade with a good surface treatment.

[0032] In some embodiments of the present invention, in S1, the first acidic cleaning solution comprises the following components in mass fractions: 26-28% nitric acid, 5-6% hydrofluoric acid, 3-4% activator, 2-3% corrosion inhibitor, and 59-64% water; preferably, the activator is urea, and the corrosion inhibitor is glycerol.

[0033] In some embodiments of the present invention, in S1, the immersion time of the micro blade is 20s-5min.

[0034] In some embodiments of the present invention, in S2, the alkaline cleaning solution includes the following components in mass fractions: 18-20% sodium hydroxide and 80-82% water.

[0035] In some embodiments of the present invention, in S2, the immersion time of the micro blade is 20s-5min.

[0036] In some embodiments of the present invention, in S3, the second acidic cleaning solution comprises the following components in mass fractions: 20-25% phosphoric acid, 10-15% ethylene glycol monobutyl ether, and 60-70% hot water; the water temperature of the hot water is 50°C-95°C.

[0037] In some embodiments of the present invention, in S3, the ultrasonic cleaning time is 10-30 minutes.

[0038] In some embodiments of the present invention, in S4, the ultrasonic cleaning time is 10-30 minutes, and the water is replaced every 10 minutes.

[0039] In some embodiments of the present invention, in S4, the drying step is specifically: dehydrating the ultrasonically cleaned micro blades with anhydrous ethanol, and then placing the product in an infrared oven for drying.

[0040] Example 1

[0041] This embodiment provides a micro blade surface treatment process, comprising the following steps:

[0042] (1) Acid cleaning: Prepare the first acid cleaning solution, which includes the following components by mass fraction: 26% nitric acid, 5% hydrofluoric acid, 3% urea, 2% glycerine, and 64% water. Spread the product in a layer in the treatment tank, pour in the prepared first acid cleaning solution, soak for about 30 seconds, and then pour out the first acid cleaning solution. Rinse with tap water for 3 times.

[0043] (2) Alkaline cleaning: Prepare an alkaline cleaning solution, which includes the following components by mass fraction: 18% sodium hydroxide and 82% water. Spread the product in a layer in the treatment tank, pour in the prepared alkaline cleaning solution, soak for about 5 minutes, and then pour out the alkaline cleaning solution. Rinse with 55°C hot water for 3 times.

[0044] (3) Super-washing with acid cleaning solution: Prepare the second acid cleaning solution first. The second acid cleaning solution includes the following components by mass fraction: 20% phosphoric acid, 10% ethylene glycol monobutyl ether, and 70% hot water. Put the product into a beaker, add the second acid cleaning solution, super-wash for 20 minutes, and pour off the second acid cleaning solution. Rinse with tap water for 3 times.

[0045] (4) Ultrasonic cleaning: Add deionized water and perform ultrasonic cleaning for 30 minutes, changing the water every 10 minutes. After the ultrasonic cleaning, pour out the deionized water.

[0046] (5) Drying: Dehydrate the product surface with 99% by volume anhydrous ethanol, pour the product into a stainless steel bowl, and place it in an infrared oven at 170°C for 10-20 minutes.

[0047] After verification of the above embodiments, it is concluded that the defective rate of the product due to cleaning is 0-0.05%, the sampling yield is within an acceptable range, and the product can be mass-produced and meet the quality requirements.

[0048] Example 2

[0049] This embodiment provides a micro blade surface treatment process, comprising the following steps:

[0050] (1) Acid cleaning: Prepare the first acid cleaning solution, which includes the following components by mass fraction: 28% nitric acid, 6% hydrofluoric acid, 4% urea, 3% glycerine, and 59% water. Spread the product in a layer in the treatment tank, pour in the prepared first acid cleaning solution, soak for about 30 seconds, and then pour out the first acid cleaning solution. Rinse with tap water for 3 times.

[0051] (2) Alkaline cleaning: Prepare an alkaline cleaning solution. The alkaline cleaning solution includes the following components by mass fraction: 20% sodium hydroxide and 80% water. Spread the product in a layer in the treatment tank, pour in the prepared alkaline cleaning solution, soak for about 5 minutes, and then pour out the alkaline cleaning solution. Rinse with 55°C hot water for 3 times.

[0052] (3) Super-washing with acid cleaning solution: Prepare the second acid cleaning solution first. The second acid cleaning solution includes the following components by mass fraction: 25% phosphoric acid, 15% ethylene glycol monobutyl ether, and 60% hot water. Put the product into a beaker, add the second acid cleaning solution, super-wash for 20 minutes, and pour off the second acid cleaning solution. Rinse with tap water for 3 times.

[0053] (4) Ultrasonic cleaning: Add deionized water and perform ultrasonic cleaning for 30 minutes, changing the water every 10 minutes. After the ultrasonic cleaning, pour out the deionized water.

[0054] (5) Drying: Dehydrate the product surface with 99% by volume anhydrous ethanol, pour the product into a stainless steel bowl, and place it in an infrared oven at 170°C for 10-20 minutes.

[0055] After verification of the above embodiments, it is concluded that the defective rate of the product due to cleaning is 0-0.05%, the sampling yield is within an acceptable range, and the product can be mass-produced and meet the quality requirements.

[0056] Example 3

[0057] This embodiment provides a micro blade surface treatment process, comprising the following steps:

[0058] (1) Acid cleaning: Prepare the first acid cleaning solution, which includes the following components by mass fraction: 27% nitric acid, 5% hydrofluoric acid, 4% urea, 3% glycerol, and 61% water. Spread the product in a layer in the treatment tank, pour in the prepared first acid cleaning solution, soak for about 30 seconds, and then pour out the first acid cleaning solution. Rinse with tap water for 3 times.

[0059] (2) Alkaline cleaning: Prepare an alkaline cleaning solution. The alkaline cleaning solution includes the following components by mass fraction: 19% sodium hydroxide and 81% water. Spread the product in a layer in the treatment tank, pour in the prepared alkaline cleaning solution, soak for about 5 minutes, and then pour out the alkaline cleaning solution. Rinse with 55°C hot water for 3 times.

[0060] (3) Super-washing with acid cleaning solution: Prepare the second acid cleaning solution first. The second acid cleaning solution includes the following components by mass fraction: 23% phosphoric acid, 13% ethylene glycol monobutyl ether, and 64% hot water. Put the product into a beaker, add the second acid cleaning solution, super-wash for 20 minutes, and pour off the second acid cleaning solution. Rinse with tap water for 3 times.

[0061] (4) Ultrasonic cleaning: Add deionized water and perform ultrasonic cleaning for 30 minutes, changing the water every 10 minutes. After the ultrasonic cleaning, pour out the deionized water.

[0062] (5) Drying: Dehydrate the product surface with 99% by volume anhydrous ethanol, pour the product into a stainless steel bowl, and place it in an infrared oven at 170°C for 10-20 minutes.

[0063] After verification of the above embodiments, it is concluded that the defective rate of the product due to cleaning is 0-0.05%, the sampling yield is within an acceptable range, and the product can be mass-produced and meet the quality requirements.

[0064] Comparative Example 1

[0065] This comparative example provides a micro blade surface treatment process, comprising the following steps:

[0066] (1) Acid cleaning: Prepare the first acid cleaning solution, which includes the following components by mass fraction: 20-22% nitric acid, 3-4% hydrofluoric acid, 1-2% urea, 0.5-1% glycerol, and 71-75% water. Spread the product in a layer in the treatment tank, pour in the prepared first acid cleaning solution, soak for about 30 seconds, and then pour out the first acid cleaning solution. Rinse with tap water for 3 times.

[0067] (2) Alkaline cleaning: Prepare an alkaline cleaning solution. The alkaline cleaning solution includes the following components by mass fraction: 15-17% sodium hydroxide and 83-85% water. Spread the product in a layer in the treatment tank, pour in the prepared alkaline solution, soak for about 5 minutes, and then pour out the alkaline solution. Rinse with 50°C hot water for 3 times.

[0068] (3) Super-washing with acid cleaning solution: Prepare the second acid cleaning solution first. The second acid cleaning solution includes the following components by mass fraction: 10-15% phosphoric acid, 1-5% ethylene glycol monobutyl ether, and 80-89% hot water at 50°C. Put the product into a beaker, add the second acid cleaning solution, super-wash for 20 minutes, and pour off the second acid cleaning solution. Rinse with tap water for 3 times.

[0069] (4) Ultrasonic cleaning: Add deionized water and perform ultrasonic cleaning for 30 minutes, changing the water every 10 minutes. After the ultrasonic cleaning, pour out the deionized water.

[0070] (5) Drying: Dehydrate the product surface with 99% by volume anhydrous ethanol, pour the product into a stainless steel bowl, and place it in an infrared oven at 170°C for 10-20 minutes.

[0071] After verification of the above comparative proportion, it was concluded that the defective rate of the product due to cleaning was 3-3.5%, which exceeded the acceptable range of random inspection, and the mass production of the product could not meet the product quality requirements.

[0072] Comparative Example 2

[0073] This comparative example provides a micro blade surface treatment process, comprising the following steps:

[0074] (1) Alkaline cleaning: Prepare an alkaline cleaning solution. The alkaline cleaning solution includes the following components by mass fraction: 15-17% sodium hydroxide and 83-85% water. Spread the product in a layer in the treatment tank, pour in the prepared alkaline solution, soak for about 5 minutes, and then pour out the alkaline solution. Rinse with 50°C hot water for 3 times.

[0075] (2) Acid cleaning: Prepare the first acid cleaning solution, which includes the following components by mass fraction: 20-22% nitric acid, 3-4% hydrofluoric acid, 1-2% urea, 0.5-1% glycerol, and 71-75% water. Spread the product in a layer in the treatment tank, pour in the prepared first acid cleaning solution, soak for about 30 seconds, and then pour out the first acid cleaning solution. Rinse with tap water for 3 times.

[0076] (3) Super-washing with acid cleaning solution: Prepare the second acid cleaning solution first. The second acid cleaning solution includes the following components by mass fraction: 10-15% phosphoric acid, 1-5% ethylene glycol monobutyl ether, and 80-89% hot water at 50°C. Put the product into a beaker, add the second acid cleaning solution, super-wash for 20 minutes, and pour off the second acid cleaning solution. Rinse with tap water for 3 times.

[0077] (4) Ultrasonic cleaning: Add deionized water and perform ultrasonic cleaning for 30 minutes, changing the water every 10 minutes. After the ultrasonic cleaning, pour out the deionized water.

[0078] (5) Drying: Dehydrate the product surface with 99% by volume anhydrous ethanol, pour the product into a stainless steel bowl, and place it in an infrared oven at 170°C for 10-20 minutes.

[0079] After verification of the above comparative examples, it was found that the defective rate of the product due to cleaning was 2-4.5%, which exceeded the acceptable range of random inspection, and the mass production of the product could not meet the product quality requirements. This process has a large fluctuation in product quality.

[0080] The above is only a preferred embodiment of the present invention, and does not limit the present invention in other forms. Any technician familiar with the profession may use the above disclosed technical content to change or modify it into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention without departing from the technical solution of the present invention still belongs to the protection scope of the technical solution of the present invention.

Claims

1. A micro blade surface treatment process, characterized in that: The steps include: S1, placing the micro blade into a first acidic cleaning solution for soaking, and then washing away the first acidic cleaning solution; S2, placing the micro blade treated in S1 into an alkaline cleaning solution for soaking, and then washing away the alkaline cleaning solution; S3, placing the micro blade treated by S2 into a second acidic cleaning solution for ultrasonic cleaning, and then washing away the second acidic cleaning solution; S4, placing the micro blade treated by S3 into water for ultrasonic cleaning, and drying to obtain a micro blade with a good surface treatment.

2. A micro blade surface treatment process according to claim 1, characterized in that: In S1, the first acid cleaning solution includes the following components in mass fractions: 26-28% nitric acid, 5-6% hydrofluoric acid, 3-4% activator, 2-3% corrosion inhibitor, and 59-64% water.

3. A micro blade surface treatment process according to claim 1, characterized in that: In S1, the immersion time of the micro blade is 20s-5min.

4. A micro blade surface treatment process according to claim 1, characterized in that: In S2, the alkaline cleaning solution includes the following components in mass fractions: 18-20% sodium hydroxide and 80-82% water.

5. A micro blade surface treatment process according to claim 1, characterized in that: In S2, the immersion time of the micro blade is 20s-5min.

6. A micro blade surface treatment process according to claim 1, characterized in that: In S3, the second acid cleaning solution comprises the following components in mass fractions: 20-25% phosphoric acid, 10-15% ethylene glycol monobutyl ether, and 60-70% hot water.

7. A micro blade surface treatment process according to claim 6, characterized in that: The water temperature of the hot water is 50°C-95°C.

8. A micro blade surface treatment process according to claim 1, characterized in that: In S3, the ultrasonic cleaning time is 10-30 minutes.

9. A micro blade surface treatment process according to claim 1, characterized in that: In S4, the ultrasonic cleaning time is 10-30 minutes, and the water is replaced every 10 minutes.

10. A micro blade surface treatment process according to claim 1, characterized in that: In S4, the drying step is specifically as follows: dehydrating the ultrasonically cleaned micro blades with anhydrous ethanol, and then placing the product in an infrared oven for drying.

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