A method for preparing a corrosion-resistant insulating material and its application in a fixture.

Abstract

The application discloses a preparation method of corrosion-resistant insulating material, and applies the corrosion-resistant insulating material to the surface of an aluminum profile vertical oxidation clamp. The application optimizes the components and component proportions of the corrosion-resistant insulating material, and after sintering treatment, the sintered body of the crystal grain and the crystal boundary keeps the crystal boundary diffusion in an active state, sufficient material diffusion paths are formed between the particles, the material is densified through the crystal boundary diffusion, the corrosion-resistant insulating material with excellent heat conductivity and corrosion resistance is obtained, the preparation process is simple, and the operability is strong. In addition, the corrosion-resistant insulating material is sprayed to the surface of the aluminum alloy vertical oxidation clamp through a plasma spraying process, the coating formed has not only a remarkable corrosion resistance, reduces the surface chemical corrosion of the aluminum alloy vertical oxidation clamp, but also has excellent wear resistance, thereby prolonging the service life of the aluminum alloy vertical oxidation clamp.

Description

Technical Field

[0001] This invention relates to the field of corrosion-resistant insulating material preparation, and more specifically, to a method for preparing a corrosion-resistant insulating material and its application in a fixture. Background Technology

[0002] A fixture is used to fix an object to be processed, ensuring it occupies the correct position; broadly speaking, it is called a clamp. In the field of aluminum profile processing, during electroplating and electrophoresis processes, to facilitate the rapid fixing of aluminum profiles into the electroplating or electrophoresis tank for electroplating, electrophoresis, or oxidation treatments, clamps are generally used to clamp and fix the aluminum profiles onto the electroplating or electrophoresis rack before placing them into the electroplating or electrophoresis tank for processing. Those skilled in the art can consult the patent documents previously filed and published by the applicant regarding the fixtures used in this process. However, in practical applications, existing fixtures of this type still have certain shortcomings. For example, Chinese patent application CN201521124940.8 discloses a self-locking spraying clamp solution. This solution uses a spring clip with an opening, which easily traps electroplating or electrophoretic solutions. This not only wastes some of the electroplating or electrophoretic solutions, but also causes significant corrosion to the fixture when the solutions dry and solidify in the slots, greatly affecting its service life. Furthermore, due to the limitations of the spring clip, spring clips with high elasticity are often quite large, making it difficult to make the fixture smaller. In existing technologies, vertical anodizing fixtures for aluminum profiles need to be immersed in an electrolytic bath to reduce wear on the aluminum profile head. Traditional fixtures undergo chemical reactions, leading to electrochemical corrosion and affecting their service life. In addition, since the fixtures need to be reused multiple times, a large number of idle fixtures accumulate in inventory. Due to prolonged storage and environmental factors, the surface of these fixtures also corrodes, increasing costs and causing serious losses to production. Summary of the Invention

[0003] Based on this, in order to solve the problem of corrosion resistance in existing vertical anodizing fixtures for aluminum profiles, this invention provides a method for preparing a corrosion-resistant insulating material and its application in the fixture. The specific technical solution is as follows:

[0004] A method for preparing a corrosion-resistant insulating material, wherein the corrosion-resistant insulating material is applied to the surface of a clamp, and the clamp is a vertical anodizing clamp made of aluminum profile;

[0005] The preparation method includes the following steps:

[0006] Zirconia, lanthanum oxide and alumina were mixed in a mass ratio of (1-13):(1-7):(1-5), and after a first ball milling treatment, a mixed powder was obtained.

[0007] The mixed powder is added to the treatment agent and then ultrasonically treated to obtain a slurry;

[0008] The slurry is spray-granulated, sintered, and then ball-milled to obtain a corrosion-resistant insulating material.

[0009] Furthermore, the particle size of the corrosion-resistant insulating material is 30μm to 65μm.

[0010] Furthermore, the rotational speed of the first ball milling process is 100 r / min to 150 r / min, and the time is 30 min to 60 min.

[0011] Furthermore, the ratio of the mixed powder to the treatment agent is (5g~10g) / 10mL.

[0012] Furthermore, the treatment agent is at least one selected from butanone, methyl isobutyl ketone, isopropanol, ethylene glycol, and n-butanol.

[0013] Furthermore, the ultrasonic treatment is performed at a frequency of 35 kHz to 40 kHz, a temperature of 75°C to 85°C, and a duration of 10 min to 20 min.

[0014] Furthermore, the sintering treatment temperature is 700℃~900℃, the pressure is 30MPa~35MPa, the heating rate is 15℃ / min~30℃ / min, and the holding time is 5min~10min.

[0015] Furthermore, the second ball milling process is performed at a rotation speed of 500 r / min to 1000 r / min for a time of 45 min to 60 min.

[0016] Furthermore, the surface applied to the vertical anodizing fixture for aluminum profiles is:

[0017] The surface of the vertical anodizing fixture for aluminum profiles is roughened, then the vertical anodizing fixture for aluminum profiles is preheated, and then the corrosion-resistant insulating material is sprayed onto the surface of the vertical anodizing fixture for aluminum alloys using a plasma spraying process.

[0018] Furthermore, the temperature of the preheating treatment is 100℃~150℃.

[0019] The above-mentioned scheme optimizes the composition and proportions of the corrosion-resistant insulating material. After sintering, the sintered body of grains and grain boundaries maintains active grain boundary diffusion, forming sufficient material diffusion paths between particles. Further grain boundary diffusion densifies the material, resulting in a corrosion-resistant insulating material with excellent thermal conductivity, insulation, and corrosion resistance. The preparation process is simple and highly operable. Furthermore, applying the corrosion-resistant insulating material to the surface of the aluminum alloy vertical anodizing fixture via plasma spraying creates a coating that adheres strongly to the fixture surface. This coating not only provides significant corrosion resistance and insulation, reducing surface chemical corrosion and insulation of the aluminum alloy vertical anodizing fixture, but also exhibits excellent wear resistance, thereby extending the service life of the aluminum alloy vertical anodizing fixture. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to its embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the scope of protection of the invention.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0022] One embodiment of the present invention discloses a method for preparing a corrosion-resistant insulating material, wherein the corrosion-resistant insulating material is applied to the surface of a clamp, and the clamp is an aluminum profile vertical anodizing clamp;

[0023] The preparation method includes the following steps:

[0024] Zirconia, lanthanum oxide and alumina were mixed in a mass ratio of (1-13):(1-7):(1-5), and after a first ball milling treatment, a mixed powder was obtained.

[0025] The mixed powder is added to the treatment agent and then ultrasonically treated to obtain a slurry;

[0026] The slurry is spray-granulated, sintered, and then ball-milled to obtain a corrosion-resistant insulating material.

[0027] In one embodiment, the particle size of the corrosion-resistant insulating material is 30 μm to 65 μm.

[0028] In one embodiment, the first ball milling process is performed at a rotation speed of 100 r / min to 150 r / min for a time of 30 min to 60 min.

[0029] In one embodiment, the ratio of the mixed powder to the treatment agent is (5g~10g) / 10mL.

[0030] In one embodiment, the treatment agent is at least one selected from methyl ethyl ketone, methyl isobutyl ketone, isopropanol, ethylene glycol, and n-butanol.

[0031] In one embodiment, the ultrasonic treatment is performed at a frequency of 35 kHz to 40 kHz, a temperature of 75°C to 85°C, and a duration of 10 min to 20 min.

[0032] In one embodiment, the sintering temperature is 700℃~900℃, the pressure is 30MPa~35MPa, the heating rate is 15℃ / min~30℃ / min, and the holding time is 5min~10min.

[0033] In one embodiment, the second ball milling process is performed at a rotation speed of 500 r / min to 1000 r / min for a time of 45 min to 60 min.

[0034] In one embodiment, the surface applied to the vertical anodizing fixture for aluminum profiles is:

[0035] The surface of the vertical anodizing fixture for aluminum profiles is roughened, then the vertical anodizing fixture for aluminum profiles is preheated, and then the corrosion-resistant insulating material is sprayed onto the surface of the vertical anodizing fixture for aluminum alloys using a plasma spraying process.

[0036] In one embodiment, the roughening treatment results in a surface roughness Ra of 2.5 μm to 8.7 μm for the vertical anodizing fixture for aluminum profiles.

[0037] In one embodiment, the preheating treatment temperature is 100°C to 150°C. This application applies preheating treatment to vertical anodizing fixtures for aluminum profiles to reduce stress generation.

[0038] In one embodiment, the plasma spraying process uses Ar as the main gas and H2 as the auxiliary gas, wherein the flow rate of Ar is 35L / min to 60L / min and the flow rate of H2 is 1L / min to 3L / min.

[0039] In one embodiment, the spraying distance of the plasma spraying process is 90mm to 120mm.

[0040] In one embodiment, the plasma spraying process has a spraying angle of 90°.

[0041] In one embodiment, the current of the plasma spraying process is 500A to 520A.

[0042] In one embodiment, the powder feeding rate of the plasma spraying process is 10 g / min to 15 g / min.

[0043] In one embodiment, the corrosion-resistant insulating material is formed on the surface of the vertical anodizing fixture for aluminum profiles with a thickness of 0.5 mm to 1 mm.

[0044] The above solution optimizes the composition and proportion of the corrosion-resistant insulating material, and applies the corrosion-resistant insulating material to the surface of the aluminum alloy vertical anodizing fixture through plasma spraying. The resulting coating not only has significant corrosion resistance, reducing surface chemical corrosion of the aluminum alloy vertical anodizing fixture, but also has excellent wear resistance, thereby extending the service life of the aluminum alloy vertical anodizing fixture.

[0045] The implementation schemes of the present invention will now be described in detail with reference to specific embodiments.

[0046] Example 1:

[0047] A method for preparing a corrosion-resistant insulating material includes the following steps:

[0048] Zirconia, lanthanum oxide and alumina were mixed in a mass ratio of 10:3:3 and ball-milled at 150 r / min for 45 min to obtain a mixed powder.

[0049] The mixed powder was added to methyl isobutyl ketone at a material-to-liquid ratio of 7g / 10mL, and then ultrasonically treated for 10min at a frequency of 35KHz and a temperature of 75℃ to obtain a slurry.

[0050] The slurry was spray-granulated, sintered at 900°C and 30MPa at a heating rate of 20°C / min, and held at the temperature and pressure for 10 min. After a second ball milling treatment at 800 r / min for 50 min, a corrosion-resistant insulating material with a particle size of 45 μm was obtained.

[0051] The corrosion-resistant insulating material prepared in Example 1 was applied to the surface of an aluminum profile vertical anodizing fixture:

[0052] The surface of the vertical anodizing fixture for aluminum profiles is roughened, and then the fixture is preheated at 100°C. The corrosion-resistant insulating material described in Example 1 is then sprayed onto the surface of the fixture using a plasma spraying process. The plasma spraying conditions are as follows: Ar is the primary gas, and H2 is the auxiliary gas, with an Ar flow rate of 45 L / min and an H2 flow rate of 1 L / min; the spraying distance is 90 mm; the spraying angle is 90°; the current is 516 A; and the powder feeding rate is 10 g / min.

[0053] Example 2:

[0054] A method for preparing a corrosion-resistant insulating material includes the following steps:

[0055] Zirconia, lanthanum oxide and alumina were mixed in a mass ratio of 10:4:2 and subjected to a first ball milling process at a speed of 150 r / min for 50 min to obtain a mixed powder.

[0056] The mixed powder was added to methyl isobutyl ketone at a material-to-liquid ratio of 8g / 10mL, and then ultrasonically treated for 15min at a frequency of 38KHz and a temperature of 80℃ to obtain a slurry.

[0057] The slurry was spray-granulated, sintered at 900°C and 32MPa at a heating rate of 20°C / min, and held at the temperature and pressure for 10 min. After a second ball milling treatment at a speed of 1000 r / min for 50 min, a corrosion-resistant insulating material with a particle size of 45 μm was obtained.

[0058] The corrosion-resistant insulating material prepared in Example 2 was applied to the surface of an aluminum profile vertical anodizing fixture:

[0059] The surface of the vertical anodizing fixture for aluminum profiles is roughened, and then the fixture is preheated at 120°C. Next, the corrosion-resistant insulating material described in Example 2 is sprayed onto the surface of the fixture using a plasma spraying process. The plasma spraying conditions are as follows: Ar is the primary gas, and H2 is the auxiliary gas, with an Ar flow rate of 45 L / min and an H2 flow rate of 1 L / min; the spraying distance is 90 mm; the spraying angle is 90°; the current is 520 A; and the powder feeding rate is 10 g / min.

[0060] Example 3:

[0061] A method for preparing a corrosion-resistant insulating material includes the following steps:

[0062] Zirconia, lanthanum oxide and alumina were mixed in a mass ratio of 11:3:2 and subjected to a first ball milling treatment at a speed of 150 r / min for 60 min to obtain a mixed powder.

[0063] The mixed powder was added to methyl isobutyl ketone at a material-to-liquid ratio of 10g / 10mL, and then ultrasonically treated for 15min at a frequency of 40KHz and a temperature of 85℃ to obtain a slurry.

[0064] The slurry was spray-granulated, sintered at 900°C and 30MPa at a heating rate of 22°C / min, and held at the temperature and pressure for 8 min. After a second ball milling treatment at a speed of 1000 r / min for 50 min, a corrosion-resistant insulating material with a particle size of 45 μm was obtained.

[0065] The corrosion-resistant insulating material prepared in Example 3 was applied to the surface of an aluminum profile vertical anodizing fixture:

[0066] The surface of the vertical anodizing fixture for aluminum profiles is roughened, and then the fixture is preheated at 150°C. Next, the corrosion-resistant insulating material described in Example 3 is sprayed onto the surface of the fixture using a plasma spraying process. The plasma spraying conditions are as follows: Ar is the primary gas, and H2 is the auxiliary gas, with an Ar flow rate of 45 L / min and an H2 flow rate of 1 L / min; the spraying distance is 90 mm; the spraying angle is 90°; the current is 520 A; and the powder feeding rate is 10 g / min.

[0067] Comparative Example 1:

[0068] The difference between Comparative Example 1 and Example 3 is that in Comparative Example 1, zirconium oxide powder is sprayed onto the surface of the aluminum alloy vertical anodizing fixture using a plasma spraying process; otherwise, it is the same as in Example 3.

[0069] Comparative Example 2:

[0070] The difference between Comparative Example 2 and Example 3 is that in Comparative Example 2, lanthanum oxide powder was sprayed onto the surface of the aluminum alloy vertical anodizing fixture using a plasma spraying process; otherwise, it was the same as in Example 3.

[0071] Comparative Example 3:

[0072] The difference between Comparative Example 3 and Example 3 is that in Comparative Example 3, alumina powder is sprayed onto the surface of the aluminum alloy vertical anodizing fixture using a plasma spraying process; otherwise, they are the same as in Example 3.

[0073] Comparative Example 4:

[0074] The difference between Comparative Example 4 and Example 3 is that in Comparative Example 4, zirconium oxide, lanthanum oxide, and alumina were mixed in a mass ratio of 1:4:11 and subjected to a first ball milling treatment at a speed of 150 r / min for 60 min to obtain a mixed powder. Everything else was the same as in Example 3.

[0075] Comparative Example 5:

[0076] The difference between Comparative Example 5 and Example 3 is that Comparative Example 5 was not subjected to ultrasonic treatment, but otherwise it was the same as Example 3.

[0077] Comparative Example 6:

[0078] The difference between Comparative Example 6 and Example 3 is that the corrosion-resistant insulating material in Comparative Example 6 was not sintered, but otherwise it was the same as in Example 3.

[0079] Comparative Example 7:

[0080] The vertical anodizing fixture for aluminum profiles in Comparative Example 7 was not treated.

[0081] The corrosion-resistant insulating materials prepared in Examples 1-3 were applied to the surface of the vertical anodizing fixture for aluminum profiles, and the comparative samples prepared in Comparative Examples 1-6 were applied to the surface of the vertical anodizing fixture for aluminum profiles. Comparative Example 7 was used as a blank control. The relevant properties were tested. The surface quality and salt spray test were observed subjectively by those skilled in the art. The friction and wear test was conducted in accordance with ASTM G99-05. The results are shown in Table 1 below.

[0082] Table 1: Test Results

[0083]

[0084]

[0085] As can be seen from the data analysis in Table 1, the corrosion-resistant insulating material of this application is plasma-sprayed onto the surface of the vertical anodizing fixture for aluminum profiles. The resulting coating not only has a significant corrosion resistance, reducing the surface chemical corrosion of the vertical anodizing fixture for aluminum alloys, but also has excellent wear resistance, thereby extending the service life of the vertical anodizing fixture for aluminum alloys.

[0086] Furthermore, when Examples 1 to 3 of this application were applied to the surface of vertical anodizing fixtures for aluminum profiles, they still exhibited excellent electrochemical corrosion resistance after electrochemical corrosion testing.

[0087] Meanwhile, the corrosion-resistant insulating material of this application, which exhibits excellent resistance to electro-corrosion, was selected for insulation and high-temperature resistance tests. The corrosion-resistant insulating materials prepared in Examples 1-3 were applied to the surface of the vertical anodizing fixture for aluminum profiles. During testing, if 1000V was the insulation condition, no further testing was conducted, and the result was recorded as 1000V complete insulation. If the material remained stable at 500℃ and still functioned normally, no further testing was performed, and the result was recorded as 500℃. The results of the insulation and high-temperature resistance tests are shown in Table 2 below.

[0088] Table 2: Performance Results

[0089]

[0090] As can be seen from the data analysis in Table 2, the corrosion-resistant insulating material of this application has excellent insulation properties and excellent high-temperature stability, and can be used in industry.

[0091] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0092] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A method of producing a corrosion-resistant insulating material, characterized by, The corrosion-resistant insulating material is applied to the surface of the clamp, and the clamp is an aluminum profile vertical oxidation clamp; The preparation method comprises the following steps: Zirconium oxide, lanthanum oxide and aluminum oxide with a mass ratio of (1-13):(1-7):(1-5) are mixed, and after first ball milling treatment, mixed powder is obtained; The mixed powder is added into a treating agent, and then ultrasonic treatment is conducted to obtain slurry; The treating agent is at least one of butanone, methyl isobutyl ketone, isopropyl alcohol, ethylene glycol and n-butanol; The slurry is subjected to spray granulation and sintering treatment, the sintering treatment is conducted at a temperature of 700 DEG C to 900 DEG C, a pressure of 30 MPa to 35 MPa, a temperature rising rate of 15 DEG C / min to 30 DEG C / min, and a holding time of 5 min to 10 min, and after second ball milling treatment, the corrosion-resistant insulating material is obtained.

2. The production method according to claim 1, characterized by, The particle size of the corrosion-resistant insulating material is 30 mu m to 65 mu m.

3. The preparation method according to claim 1, characterized in that, The rotating speed of the first ball milling treatment is 100 r / min to 150 r / min, and the time is 30 min to 60 min.

4. The method of claim 1, wherein, The ratio of the mixed powder to the treating agent is (5 g to 10 g) / 10 mL.

5. The preparation method according to claim 1, characterized in that, The ultrasonic treatment is conducted at a frequency of 35 KHz to 40 KHz, a temperature of 75 DEG C to 85 DEG C, and a time of 10 min to 20 min.

6. The method of claim 1, wherein, The rotating speed of the second ball milling treatment is 500 r / min to 1000 r / min, and the time is 45 min to 60 min.

7. The preparation method according to claim 1, characterized in that, The surface applied to the aluminum profile vertical oxidation clamp is: The surface of the aluminum profile vertical oxidation clamp is subjected to roughening treatment, and then the aluminum profile vertical oxidation clamp is subjected to preheating treatment, and then the corrosion-resistant insulating material is sprayed on the surface of the aluminum profile vertical oxidation clamp by adopting plasma spraying process.

8. The preparation method according to claim 7, characterized in that, The temperature of the preheating treatment is 100 DEG C to 150 DEG C.

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