Synthetic lubricating rust preventive composition for steel ball finish machining and method of using the same

Abstract

The present application relates to the technical field of metal processing, disclose a kind of synthetic lubricating rust-proof composition and its use method for steel ball precision grinding, including with the mass percentage of each component of the composition raw material is as follows: silicon dioxide is 20wt%-30wt%, cerium dioxide is 10wt%-20wt%, fatty acid amide is 0.5wt%-2wt%, benzotriazole derivative is 10wt%-15wt%, stabilizer is 0.2wt%-1wt%, dispersant is 1wt%-5.5wt%, pH regulator is 0.2wt%-0.5wt%, fatty alcohol polyoxyethylene ether is 2wt%-10wt%, above-mentioned silicon dioxide, cerium dioxide, fatty acid amide, benzotriazole derivative, stabilizer, dispersant, pH regulator and fatty alcohol polyoxyethylene ether are mixed and put into precision grinding device.The present application is to realize that synthetic composition has stronger lubricity and rust resistance, and with synthetic composition cooperates precision grinding device to enhance the performance of steel ball grinding.

Description

Technical Field

[0001] This invention relates to the field of metal processing technology, and more specifically to a synthetic lubricating and rust-preventing composition for precision grinding of steel balls and its application method. Background Technology

[0002] Steel balls are an important basic component, playing a vital role in industrial production. Steel balls can be classified into various types based on their materials. Commonly used steel ball materials include 9Cr18 stainless steel, 3Cr13 stainless steel, copper, aluminum, titanium alloy steel, as well as agate, glass, ceramics, and more. The widespread application of these steel balls has not only driven the development of the steel ball manufacturing industry but also promoted technological development and scientific progress in related industries.

[0003] In the processing of metal steel balls, the typical process includes cold heading / hot heading, polishing, grinding, heat treatment, and fine grinding. Among these, the polishing, grinding, and fine grinding processes account for the majority of the production process. It can be said that the grinding process directly determines the quality of the final steel ball product.

[0004] Generally, in the grinding process of steel ball products, when steel ball blanks or semi-finished products are put into grinding equipment for grinding, a certain amount of grinding fluid is injected into the grinding equipment to ensure the grinding effect, so as to play a lubricating and grinding aid role. However, in actual use, our company has found that the grinding fluid used in the fine grinding of steel balls has poor rust prevention and lubrication, and at the same time, it has a certain degree of pollution to the surrounding environment. Therefore, in order to solve the above technical problems, our company has conducted research on the synthesis composition of grinding fluid to achieve that the synthesis composition has strong lubrication and rust prevention properties, and to enhance the performance of steel ball grinding by using the synthesis composition in conjunction with the fine grinding device. Summary of the Invention

[0005] The present invention aims to provide a synthetic lubricating and rust-preventing composition for precision grinding of steel balls and a method of using the same, so as to achieve strong lubricity and rust prevention of the synthetic composition, and to enhance the performance of steel ball grinding by using the synthetic composition in conjunction with a precision grinding device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: 1) A synthetic lubricating and rust-preventing composition for precision grinding of steel balls, comprising the following components by mass percentage: The following ingredients are mixed and added into the fine grinding device: 20wt%-30wt% silica, 10wt%-20wt% cerium dioxide, 0.5wt%-2wt% fatty acid amide, 10wt%-15wt% benzotriazole derivative, 0.2wt%-1wt% stabilizer, 1wt%-5.5wt% dispersant, 0.2wt%-0.5wt% pH adjuster, and 2wt%-10wt% fatty alcohol polyoxyethylene ether.

[0007] In the synthetic lubricating and rust-preventing composition designed in this invention, 10wt%-20wt% of cerium dioxide plays a crucial role in the precision grinding process of steel balls. The role of cerium dioxide is to work together with silicon dioxide to efficiently remove scratches and defects from the surface of the steel balls. At the same time, due to the properties of cerium dioxide, the synthetic lubricating and rust-preventing composition has the advantages of fast polishing speed, high gloss and long service life.

[0008] The role of cerium dioxide in the process is as follows: It works in conjunction with 0.5wt%-2wt% of a synthetic lubricant containing fatty acid amides to reduce friction and heat during the fine grinding of steel balls, thereby improving the grinding efficiency and protecting the surface of the steel balls from excessive wear. It also works in conjunction with 10wt%-15wt% of a rust remover containing benzotriazole derivatives, which form a protective film on the steel balls during the fine grinding process, effectively isolating them from air and moisture, thus achieving rust prevention during the fine grinding process.

[0009] In addition, the synthetic lubricating and rust-preventing composition of this invention also contains 0.2wt%-1wt% stabilizer, 1wt%-5.5wt% dispersant, 0.2wt%-0.5wt% pH adjuster, and 2wt%-10wt% fatty alcohol polyoxyethylene ether. The stabilizer ensures that the synthetic softening and rust-preventing composition maintains stable performance during use, ensuring grinding effect and service life. At the same time, the dispersant ensures that the components in the synthetic lubricating and rust-preventing composition are evenly dispersed in water, allowing the synthetic lubricating and rust-preventing composition to fully contact the surface of the steel ball for fine grinding and ensure the grinding effect.

[0010] A pH adjuster of 0.2wt%-0.5wt% is added to adjust the acidity or alkalinity of the synthetic lubricating and rust-preventing composition. This reacts with the silicon atoms on the surface of silica to produce semi-hydrophilic silica compounds. This increases the wettability of the steel ball with the silica surface during the fine grinding process, and, combined with fatty alcohol polyoxyethylene ether, provides lubrication and rust prevention.

[0011] 2) The synthetic lubricating and rust-preventing composition for precision grinding of steel balls according to 1), wherein: The synthetic lubricating and rust-preventing composition is prepared by mixing the following ingredients in the proportions: 25 wt% silica, 15 wt% cerium dioxide, 1.5 wt% fatty acid amide, 12 wt% benzotriazole derivative, 0.8 wt% stabilizer, 2.5 wt% dispersant, 0.4 wt% pH adjuster, and 8 wt% fatty alcohol polyoxyethylene ether.

[0012] In this invention, since silicon dioxide is an acidic oxide, a partial dissolution reaction occurs between silicon dioxide and cerium dioxide, causing silicon and oxygen atoms in the silicon dioxide to arrange in an orderly manner to form crystalline silicon dioxide. This effectively combines the techniques of chemical reaction and mechanical wear, so that during the fine grinding process, silicon dioxide and crystalline silicon dioxide work together to remove excess material from the surface of the steel ball, achieving a highly flat surface. At the same time, the invention is combined with fatty acid amide at 1.5 wt%, benzotriazole derivative at 12 wt%, stabilizer at 0.8 wt%, dispersant at 2.5 wt%, pH adjuster at 0.4 wt%, and fatty alcohol polyoxyethylene ether at 8 wt% to achieve the purpose of fine grinding of the steel ball, while also giving the synthesized composition strong lubricity and rust prevention.

[0013] 3) The synthetic lubricating and rust-preventing composition for precision grinding of steel balls according to 1), wherein: The synthetic lubricating and rust-preventing composition is prepared by mixing the following ingredients in the proportions: 20 wt% silica, 10 wt% cerium dioxide, 0.5 wt% fatty acid amide, 10 wt% benzotriazole derivative, 0.2 wt% stabilizer, 1 wt% dispersant, 0.2 wt% pH adjuster, and 2 wt% fatty alcohol polyoxyethylene ether. Alternatively, a synthetic lubricating and rust-preventing composition may be obtained by mixing the silica at 30 wt%, the cerium dioxide at 20 wt%, the fatty acid amide at 2 wt%, the benzotriazole derivative at 15 wt%, the stabilizer at 1 wt%, the dispersant at 5.5 wt%, the pH adjuster at 0.5 wt%, and the fatty alcohol polyoxyethylene ether at 10 wt%.

[0014] The synthetic lubricating and rust-preventing composition of this invention has softening, lubricating, rust-preventing and buffering effects. Among them, the lubricating effect is achieved by utilizing the sorting and demolding properties of fatty acid amides, which lubricates the silica and steel ball, thereby obtaining a smooth surface of the steel ball. At the same time, combined with the chemical action of benzotriazole derivatives on the oxide film on the metal surface, the oxide film is softened and easily removed from the surface by grinding, thereby improving grinding efficiency.

[0015] Stabilizers are used to ensure the stable operation of silica, cerium dioxide, benzotriazole derivatives, pH adjusters, and fatty alcohol polyoxyethylene ethers, effectively removing scratches on the surface of steel balls. The combination of benzotriazole derivatives and cerium dioxide during the fine grinding process provides rust prevention for the steel ball surface. The synthetic lubricating and rust-preventing composition is mixed with water and used to buffer the fine grinding process of steel balls, reducing the mutual impact between steel balls.

[0016] 4) The synthetic lubricating and rust-preventing composition for precision grinding of steel balls according to 1), wherein: The fine grinding device includes a fine grinding cylinder, which has a fine grinding chamber for fine grinding of steel balls by a synthetic lubricating and rust-preventing composition. The fine grinding chamber has a rotatable fine grinding shaft along its axial direction. The fine grinding shaft has spirally extending fine grinding blades evenly distributed along its axial direction. The surface of the fine grinding blades is provided with several integrally formed protruding balls. The fine grinding cylinder has a feed hopper for feeding steel balls into the fine grinding chamber. The fine grinding cylinder also has several liquid inlet pipes for feeding the synthetic lubricating and rust-preventing composition into the fine grinding chamber.

[0017] The precision grinding cylinder designed in this invention is used for precision grinding of steel balls. The steel balls are fed into the precision grinding chamber inside the precision grinding cylinder by a feed hopper. At the same time, the precision grinding liquid obtained by mixing the synthetic lubricating and rust-preventing composition developed in this invention with water is fed into the precision grinding chamber by a liquid inlet pipe. During the rotation of the precision grinding shaft, the precision grinding shaft drives the precision grinding blades that are evenly distributed and spirally extended along its axial direction to rotate.

[0018] During the rotation of the grinding blades, several raised balls on the grinding blades move together within the grinding chamber as the grinding blades rotate. Furthermore, because the grinding blades extend in a spiral direction, they drive the steel balls to move in the spiral direction, evenly dispersing all the steel balls. Under the push of the raised balls, and in conjunction with the various raw materials in the synthetic lubricating and rust-preventing composition, shearing force, extrusion force, and grinding force are generated between the steel balls and the synthetic lubricating and rust-preventing composition in the grinding fluid. This allows the various raw materials in the synthetic lubricating and rust-preventing composition to disperse and produce a homogeneous grinding effect between the steel balls.

[0019] 5) The synthetic lubricating and rust-preventing composition for precision grinding of steel balls according to 4), wherein: The fine grinding device also includes a support base located below the fine grinding cylinder. A motor housing is provided on the upper surface of the support base. A servo motor is installed inside the motor housing. The output shaft of the servo motor is coaxially connected to the fine grinding shaft. The end of the fine grinding cylinder is mounted on the side of the motor housing via a flange.

[0020] The support base designed in this invention is used to support the motor housing, and there is a certain distance between the support base and the fine grinding cylinder, so that the fine grinding cylinder is suspended above the support base. The end of the fine grinding cylinder is mounted on the side of the motor housing through a flange. The servo motor installed in the motor housing is coaxially connected to the fine grinding shaft with the output shaft. Therefore, by starting the servo motor, the output shaft drives the fine grinding shaft to rotate. When the fine grinding shaft rotates, it drives the fine grinding blades to rotate, thereby realizing the full and dispersed fine grinding operation of the synthetic lubricating and rust-preventing composition of this invention on the steel ball, thereby enhancing the grinding performance of the steel ball.

[0021] 6) The synthetic lubricating and rust-preventing composition for precision grinding of steel balls according to 5), wherein: The support base has a discharge trough along the axial direction, the trough surface is directly opposite the grinding cylinder, the grinding cylinder has a discharge port for discharging steel balls, a valve is installed in the discharge port, the position of the discharge port is directly opposite the position of the discharge trough, the discharge trough is inclined along the axial direction and has a discharge hopper with a triangular longitudinal section along the axial extension direction, the discharge hopper is connected to the discharge trough.

[0022] The discharge trough designed in this invention is located on the support base and is directly opposite the position of the fine grinding cylinder. After the steel balls are finely ground by the synthetic lubricating and rust-preventing composition, the valve is opened to open the discharge port, so that the discharge port on the fine grinding cylinder can discharge the steel balls, and at the same time, the synthetic lubricating and rust-preventing composition is discharged.

[0023] When the steel ball falls into the discharge trough, the trough is inclined along its axis, so the surface of the trough is inclined. This makes it easier for the steel ball to roll in the direction of the discharge hopper. This allows the finely ground steel ball to be discharged. At the same time, the synthetic lubricating and rust-preventing composition flows synchronously along the inclined direction of the discharge trough as the steel ball is discharged. This increases the friction between the steel ball and the surface of the discharge trough as the steel ball rolls along the trough, ensuring the finely ground performance of the steel ball when it is discharged.

[0024] 7) The synthetic lubricating and rust-preventing composition for precision grinding of steel balls according to claim 5), wherein: An opening is provided on one side of the motor housing, and a ventilation plate is installed on the opening. Several ventilation holes are evenly distributed on the ventilation plate in an array.

[0025] The present invention closes the opening on the side of the motor housing with a ventilation plate. In order to extend the service life of the servo motor, heat dissipation is achieved by several ventilation holes arranged in an array on the ventilation plate, thereby extending the service life of the servo motor.

[0026] 8) The synthetic lubricating and rust-preventing composition for precision grinding of steel balls according to 6), wherein: The upper surface of the support base is provided with two transverse rods located on both sides of the discharge trough. There are two sets of brackets between the transverse rods and the fine grinding cylinder. The two sets of brackets are evenly arranged along the axis of the discharge trough and the brackets are fixed between the transverse rods and the fine grinding cylinder. Each set of brackets includes a connecting column fixed to the outer surface of the fine grinding cylinder. The bottom of the connecting column is fixed with a connecting plate extending radially along the fine grinding cylinder. The two ends of the connecting plate are fixed with two support columns by bolts. The bottom of the support column is fixed to the transverse rod by bolts.

[0027] The transverse bar designed in this invention acts as a support for the bracket, which holds the fine grinding cylinder above the discharge trough. The bracket supports the fine grinding cylinder. The bracket designed in this invention includes a connecting column, a connecting plate, and two support columns. The connecting column is fixed to the outer surface of the fine grinding cylinder and connected to it. The bottom of the connecting column is connected to the connecting plate. Each end of the connecting plate corresponds to one of the two support columns, and the ends of the connecting plate are fixed to the support columns with bolts. The bottom of the support columns is fixed to the transverse bar with bolts, thereby fixing the fine grinding cylinder above the discharge trough for easy discharge of the fine grinding cylinder.

[0028] 9) A method of using the synthetic lubricating and rust-preventing composition for precision grinding of steel balls, applied to the synthetic lubricating and rust-preventing compositions for precision grinding of steel balls described in 1)-8) above, comprising the following steps: Step S1: Mix silicon dioxide, cerium dioxide, fatty acid amide, benzotriazole derivative, stabilizer, dispersant, pH adjuster, and fatty alcohol polyoxyethylene ether according to the mass percentage of the constituent raw materials to form a synthetic lubricating and rust-preventing composition. Mix the synthetic lubricating and rust-preventing composition with a certain amount of water to form a fine grinding fluid. Step S2: Based on step S1, according to the requirements of fine grinding steel balls, fine grinding liquid is delivered into the fine grinding chamber through liquid inlet pipes located at different positions on the fine grinding cylinder, and steel balls are simultaneously fed into the fine grinding chamber through the feed hopper located on the fine grinding cylinder. Step S3: Based on the completion of step S2, start the servo motor. The output shaft of the servo motor drives the fine grinding shaft to rotate so that the fine grinding blades rotate in the spiral direction and drive all the steel balls to move in the spiral direction and disperse them in the fine grinding chamber. During the rotation of the fine grinding blades, shear force, extrusion force and grinding force are forced between the steel balls and the fine grinding liquid, thereby grinding the steel balls. Step S4: After completing step S3, open the valve to open the discharge port on the grinding cylinder, so that all the steel balls and the grinding liquid fall into the inclined discharge trough at the same time, so that the steel balls and the grinding liquid are discharged synchronously and the grinding liquid is recycled and reused.

[0029] This invention mixes silicon dioxide, cerium dioxide, fatty acid amide, benzotriazole derivative, stabilizer, dispersant, pH adjuster, and fatty alcohol polyoxyethylene ether according to the mass percentage of the constituent raw materials to form a synthetic lubricating and rust-preventing composition. The synthetic lubricating and rust-preventing composition is mixed with a certain amount of water to form a fine grinding fluid. Different amounts of steel balls are added to the fine grinding cylinder, and the inlet pipes at different positions on the cylinder are activated. The inlet pipes deliver the fine grinding fluid into the cylinder, and as the fine grinding blades inside the cylinder rotate in a spiral motion, they drive the steel balls to mix with the fine grinding fluid. The benzotriazole derivative in the fine grinding fluid, combined with cerium dioxide, provides rust prevention during the fine grinding process. The synthetic lubricating and rust-preventing composition, stirred and mixed with water, buffers the fine grinding process of the steel balls, reducing the mutual impact between the steel balls.

[0030] The process utilizes the inherent sorting and release properties of fatty acid amides in the grinding fluid, providing lubrication between the silica and steel balls. This results in a smooth surface on the steel balls. Simultaneously, the chemical action of benzotriazole derivatives on the oxide film on the metal surface softens it, making it easier to remove during grinding and improving grinding efficiency. After the steel balls are finely ground, the valve on the grinding cylinder is opened to access the discharge port at the bottom. This allows the steel balls and grinding fluid to fall into an inclined discharge trough. The grinding fluid wets the surface of the trough, reducing friction as the steel balls roll. Simultaneously, the grinding fluid flows and is recycled along with the inclined movement of the steel balls, enabling reuse of the grinding fluid. This allows for more comprehensive utilization of the composition and waste residue in the grinding process, making it more environmentally friendly and energy-efficient.

[0031] 10) The method of using the synthetic lubricating and rust-preventing composition for precision grinding of steel balls as described in 9), wherein: In step S1, the stabilizer is sodium carboxymethyl cellulose and / or sodium carboxyethyl cellulose, wherein the number average molecular weight of sodium carboxymethyl cellulose and sodium carboxyethyl cellulose is independently 300 to 1400; the dispersant is glycerol and / or polyacrylate; and the pH adjuster is triethanolamine and / or sodium ethoxide.

[0032] The dispersant in the synthetic lubricating and rust-preventing composition of this invention can increase the hydrophilicity of silica particles in the synthetic lubricating and rust-preventing composition, and promote the dispersion of silica particles in water; the triethanolamine and / or sodium ethoxide in the pH adjuster of the synthetic lubricating and rust-preventing composition can provide alkaline conditions, improve the solubility of the stabilizers sodium carboxymethyl cellulose and / or sodium carboxyethyl cellulose, and ensure the performance of the synthetic lubricating and rust-preventing composition in actual use. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the fine grinding device in the synthetic lubricating and rust-preventing composition for fine grinding of steel balls according to the present invention; Figure 2 for Figure 1 Sectional view of AA; Figure 3 for Figure 1 Side view in the C direction; Figure 4 This invention relates to a method of using the synthetic lubricating and rust-preventing composition for precision grinding of steel balls. Detailed Implementation

[0034] The following detailed description illustrates the specific implementation method: The reference numerals in the accompanying drawings include: support base 1, motor housing 2, ventilation plate 3, horizontal rod 4, fine grinding cylinder 5, feed hopper 6, liquid inlet pipe 7, support column 8, connecting column 9, discharge hopper 10, ventilation hole 11, servo motor 12, output shaft 13, fine grinding shaft 14, fine grinding blade 15, raised ball 16, fine grinding chamber 17, discharge trough 18, and connecting plate 19. Example

[0035] The synthetic lubricating and rust-preventing composition used for precision grinding of steel balls in this embodiment comprises the following components in the following mass percentages: 25 wt% silica, 15 wt% cerium dioxide, 1.5 wt% fatty acid amide, 12 wt% benzotriazole derivative, 0.8 wt% sodium carboxymethyl cellulose, 2.5 wt% glycerol, 0.4 wt% triethanolamine, and 8 wt% fatty alcohol polyoxyethylene ether. Example

[0036] The synthetic lubricating and rust-preventing composition used for precision grinding of steel balls in this embodiment comprises the following components in the following mass percentages: 25 wt% silica, 15 wt% cerium dioxide, 1.5 wt% fatty acid amide, 12 wt% benzotriazole derivative, 0.8 wt% sodium carboxyethyl cellulose, 2.5 wt% polyacrylate, 0.4 wt% sodium ethoxide, and 8 wt% fatty alcohol polyoxyethylene ether. Example

[0037] The synthetic lubricating and rust-preventing composition used for precision grinding of steel balls in this embodiment comprises the following components in the following mass percentages: 25 wt% silica, 15 wt% cerium dioxide, 1.5 wt% fatty acid amide, 12 wt% benzotriazole derivative, 0.8 wt% sodium carboxymethyl cellulose and sodium carboxyethyl cellulose, 2.5 wt% glycerol and polyacrylate, 0.4 wt% triethanolamine and sodium ethoxide, and 8 wt% fatty alcohol polyoxyethylene ether. Example

[0038] The synthetic lubricating and rust-preventing composition used for precision grinding of steel balls in this embodiment comprises the following components in the following mass percentages: 20 wt% silica, 10 wt% cerium dioxide, 0.5 wt% fatty acid amide, 10 wt% benzotriazole derivative, 0.2 wt% sodium carboxymethyl cellulose, 1 wt% glycerol, 0.2 wt% triethanolamine, and 2 wt% fatty alcohol polyoxyethylene ether. Example

[0039] The synthetic lubricating and rust-preventing composition used for precision grinding of steel balls in this embodiment comprises the following components in the following mass percentages: 20 wt% silica, 10 wt% cerium dioxide, 0.5 wt% fatty acid amide, 10 wt% benzotriazole derivative, 0.2 wt% sodium carboxyethyl cellulose, 1 wt% polyacrylate, 0.2 wt% sodium ethoxide, and 2 wt% fatty alcohol polyoxyethylene ether. Example

[0040] The synthetic lubricating and rust-preventing composition used for precision grinding of steel balls in this embodiment comprises the following components in the following mass percentages: 20 wt% silica, 10 wt% cerium dioxide, 0.5 wt% fatty acid amide, 10 wt% benzotriazole derivative, 0.2 wt% sodium carboxymethyl cellulose and sodium carboxyethyl cellulose, 1 wt% glycerol and polyacrylate, 0.2 wt% triethanolamine and sodium ethoxide, and 2 wt% fatty alcohol polyoxyethylene ether. Example

[0041] The synthetic lubricating and rust-preventing composition used for precision grinding of steel balls in this embodiment comprises the following components in the following mass percentages: 30 wt% silica, 20 wt% cerium dioxide, 2 wt% fatty acid amide, 15 wt% benzotriazole derivative, 1 wt% sodium carboxymethyl cellulose, 5.5 wt% glycerol, 0.5 wt% triethanolamine, and 10 wt% fatty alcohol polyoxyethylene ether. Example

[0042] The synthetic lubricating and rust-preventing composition used for precision grinding of steel balls in this embodiment comprises the following components in the following mass percentages: 30 wt% silica, 20 wt% cerium dioxide, 2 wt% fatty acid amide, 15 wt% benzotriazole derivative, 1 wt% sodium carboxyethyl cellulose, 5.5 wt% polyacrylate, 0.5 wt% sodium ethoxide, and 10 wt% fatty alcohol polyoxyethylene ether. Example

[0043] The synthetic lubricating and rust-preventing composition used for precision grinding of steel balls in this embodiment comprises the following components in the following mass percentages: 30 wt% silica, 20 wt% cerium dioxide, 2 wt% fatty acid amide, 15 wt% benzotriazole derivative, 1 wt% sodium carboxymethyl cellulose and sodium carboxyethyl cellulose, 5.5 wt% glycerol and polyacrylate, 0.5 wt% triethanolamine and sodium ethoxide, and 10 wt% fatty alcohol polyoxyethylene ether.

[0044] The synthetic lubricating and rust-preventing compositions used in Examples 1-9 for precision grinding of steel balls were added into a precision grinding device, and the steel balls in the device were precision ground. (See attached text.) Figure 1 and Figure 2 As shown, the fine grinding device includes a fine grinding cylinder 5, which has a fine grinding chamber 17 for fine grinding of steel balls by a synthetic lubricating and rust-preventing composition. The fine grinding chamber 17 has a rotatable fine grinding shaft 14 along its axial direction. The fine grinding shaft 14 has fine grinding blades 15 that extend spirally and are evenly distributed along its axial direction. Several integrally formed protruding balls 16 are arranged on the surface of the fine grinding blades 15. The fine grinding cylinder 5 has a feed hopper 6 for feeding steel balls into the fine grinding chamber 17. The fine grinding cylinder 5 also has several liquid inlet pipes 7 for feeding the synthetic lubricating and rust-preventing composition into the fine grinding chamber 17.

[0045] The fine grinding device also includes a support base 1 located below the fine grinding cylinder 5. A motor housing 2 is mounted on the upper surface of the support base 1, and a servo motor 12 is installed inside the motor housing 2. An opening is opened on one side of the motor housing 2, and a ventilation plate 3 is installed on the opening. Several ventilation holes 11 are evenly distributed on the ventilation plate 3 in an array. The opening on the side of the motor housing 2 is closed by the ventilation plate 3. At the same time, in order to extend the service life of the servo motor 12, heat dissipation is achieved through the several ventilation holes 11 arranged in an array on the ventilation plate 3, thereby extending the service life of the servo motor 12.

[0046] The output shaft 13 of the servo motor 12 is coaxially connected to the fine grinding shaft 14, and the end of the fine grinding cylinder 5 is mounted on the side of the motor housing 2 via a flange; see also Figure 3 As shown, the upper surface of the support base 1 is provided with two transverse rods 4 located on both sides of the discharge trough 18. There are two sets of brackets between the transverse rods 4 and the fine grinding cylinder 5. The two sets of brackets are evenly arranged along the axial direction of the discharge trough 18 and the brackets are fixed between the transverse rods 4 and the fine grinding cylinder 5. Each set of brackets includes a connecting column 9 fixed on the outer surface of the fine grinding cylinder 5. The bottom of the connecting column 9 is fixed with a connecting plate 19 extending radially along the fine grinding cylinder 5. The two ends of the connecting plate 19 are fixed with two support columns 8 by bolts. The bottom of the support column 8 is fixed to the transverse rod 4 by bolts.

[0047] The designed transverse rod 4 acts as a support for the bracket, which supports the grinding cylinder 5 above the discharge trough 18. The bracket supports the grinding cylinder 5. The bracket designed in this invention includes a connecting column 9, a connecting plate 19, and two support columns 8. The connecting column 9 is fixed to the outer surface of the grinding cylinder 5 and connected to the grinding cylinder 5. The bottom of the connecting column 9 is connected to the connecting plate 19. The two ends of the connecting plate 19 correspond to the two support columns 8 respectively. The ends of the connecting plate 19 are fixedly connected to the support columns 8 by bolts. The bottom of the support columns 8 is fixedly connected to the transverse rod 4 by bolts. This achieves the fixed support of the grinding cylinder 5 above the discharge trough 18, which facilitates the discharge of the grinding cylinder 5.

[0048] Further, see Figure 1 , Figure 2 and Figure 3 As shown, a discharge trough 18 is provided on the support base 1 along the axial direction. The trough surface of the discharge trough 18 is directly opposite the grinding cylinder 5. The grinding cylinder 5 is provided with a discharge port for discharging steel balls. A valve is installed in the discharge port. The position of the discharge port is directly opposite the position of the discharge trough 18. The discharge trough 18 is inclined along the axial direction and a discharge hopper 10 with a triangular longitudinal section is provided along the axial extension direction. The discharge hopper 10 is connected to the discharge trough 18.

[0049] Also see Figure 4 As shown, the method of using the synthetic lubricating and rust-preventing composition for precision grinding of steel balls, based on Examples 1-9, includes the following steps: Step S1: Mix silicon dioxide, cerium dioxide, fatty acid amide, benzotriazole derivative, stabilizer, dispersant, pH adjuster, and fatty alcohol polyoxyethylene ether according to the mass percentage of the constituent raw materials to form a synthetic lubricating and rust-preventing composition. Mix the synthetic lubricating and rust-preventing composition with a certain amount of water to form a fine grinding fluid. Step S2: Based on step S1, according to the requirements of fine grinding steel balls, fine grinding liquid is delivered into fine grinding chamber 17 through liquid inlet pipes 7 located at different positions on fine grinding cylinder 5, and steel balls are simultaneously fed into fine grinding chamber 17 through feed hopper 6 located on fine grinding cylinder 5. Step S3: Based on the completion of step S2, start the servo motor 12. The output shaft 13 of the servo motor 12 drives the fine grinding shaft 14 to rotate so that the fine grinding blades 15 rotate in the spiral direction and drive all the steel balls to move in the spiral direction and disperse them in the fine grinding chamber 17. During the rotation of the fine grinding blades 15, shear force, extrusion force and grinding force are forced between the steel balls and the fine grinding liquid, thereby grinding the steel balls. Step S4: After completing step S3, open the valve to open the discharge port on the fine grinding cylinder 5, so that all the steel balls and fine grinding liquid fall into the inclined discharge trough 18 at the same time, so that the steel balls and fine grinding liquid are discharged synchronously and the fine grinding liquid is recycled and reused.

[0050] Comparative Example 1 A steel ball grinding slurry comprises the following components by mass percentage: 15% boron carbide and silicon carbide mixture, 7% monoethanolamine borate, 3% sodium citrate, 2% silicone defoamer, 1% wetting agent, 1.5% sodium perfluorooctanoate, 0.5% suspending agent, and the balance being deionized water. The steel ball grinding slurry from Comparative Example 1 was added to a vibratory grinder and used to grind the steel balls.

[0051] Table 1 compares the performance of the steel ball in Comparative Example 1 with that of the steel balls in Examples 1-9:

[0052] As shown in Table 1, in Examples 1-9, silicon dioxide, cerium dioxide, fatty acid amide, benzotriazole derivative, stabilizer, dispersant, pH adjuster, and fatty alcohol polyoxyethylene ether were mixed according to the mass percentage of the constituent raw materials to form a synthetic lubricating and rust-preventing composition. The synthetic lubricating and rust-preventing composition was mixed with a certain amount of water to form a fine grinding fluid. Different amounts of steel balls were added to the fine grinding cylinder, and the liquid inlet pipes at different positions on the fine grinding cylinder were activated. The liquid inlet pipes delivered the fine grinding fluid into the fine grinding cylinder. When the fine grinding blades in the fine grinding cylinder rotated in a spiral, they drove the steel balls to mix with the fine grinding fluid. The benzotriazole derivative in the fine grinding fluid combined with cerium dioxide had a rust-preventing effect on the surface of the steel balls during the fine grinding process. The synthetic lubricating and rust-preventing composition was stirred and mixed with water to buffer the fine grinding process of the steel balls and reduce the mutual impact between the steel balls.

[0053] The process utilizes the inherent sorting and release properties of fatty acid amides in the grinding fluid, providing lubrication between the silica and steel balls. This results in a smooth surface on the steel balls. Simultaneously, the chemical action of benzotriazole derivatives on the oxide film on the metal surface softens it, making it easier to remove during grinding and improving grinding efficiency. After the steel balls are finely ground, the valve on the grinding cylinder is opened to access the discharge port at the bottom. This allows the steel balls and grinding fluid to fall into an inclined discharge trough. The grinding fluid wets the surface of the trough, reducing friction as the steel balls roll. Simultaneously, the grinding fluid flows and is recycled along with the inclined movement of the steel balls, enabling reuse of the grinding fluid. This allows for more comprehensive utilization of the composition and waste residue in the grinding process, making it more environmentally friendly and energy-efficient.

[0054] The above are merely embodiments of this solution. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this solution. These modifications and improvements should also be considered within the scope of protection of this solution, and will not affect the effectiveness of the implementation of this solution or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A synthetic lubricating and rust-preventing composition for precision grinding of steel balls, characterized in that, Including the mass percentage of each component in the raw materials: The following ingredients are mixed and added into the fine grinding device: 20wt%-30wt% silica, 10wt%-20wt% cerium dioxide, 0.5wt%-2wt% fatty acid amide, 10wt%-15wt% benzotriazole derivative, 0.2wt%-1wt% stabilizer, 1wt%-5.5wt% dispersant, 0.2wt%-0.5wt% pH adjuster, and 2wt%-10wt% fatty alcohol polyoxyethylene ether.

2. The synthetic lubricating and rust-preventing composition for precision grinding of steel balls according to claim 1, characterized in that: The synthetic lubricating and rust-preventing composition is prepared by mixing the following ingredients in the proportions: 25 wt% silica, 15 wt% cerium dioxide, 1.5 wt% fatty acid amide, 12 wt% benzotriazole derivative, 0.8 wt% stabilizer, 2.5 wt% dispersant, 0.4 wt% pH adjuster, and 8 wt% fatty alcohol polyoxyethylene ether.

3. The synthetic lubricating and rust-preventing composition for precision grinding of steel balls according to claim 1, characterized in that: The synthetic lubricating and rust-preventing composition is prepared by mixing the following ingredients in the proportions: 20 wt% silica, 10 wt% cerium dioxide, 0.5 wt% fatty acid amide, 10 wt% benzotriazole derivative, 0.2 wt% stabilizer, 1 wt% dispersant, 0.2 wt% pH adjuster, and 2 wt% fatty alcohol polyoxyethylene ether. Alternatively, a synthetic lubricating and rust-preventing composition may be obtained by mixing the silica at 30 wt%, the cerium dioxide at 20 wt%, the fatty acid amide at 2 wt%, the benzotriazole derivative at 15 wt%, the stabilizer at 1 wt%, the dispersant at 5.5 wt%, the pH adjuster at 0.5 wt%, and the fatty alcohol polyoxyethylene ether at 10 wt%.

4. The synthetic lubricating and rust-preventing composition for precision grinding of steel balls according to claim 1, characterized in that: The fine grinding device includes a fine grinding cylinder, which has a fine grinding chamber for fine grinding of steel balls by a synthetic lubricating and rust-preventing composition. The fine grinding chamber has a rotatable fine grinding shaft along its axial direction. The fine grinding shaft has spirally extending fine grinding blades evenly distributed along its axial direction. The surface of the fine grinding blades is provided with several integrally formed protruding balls. The fine grinding cylinder has a feed hopper for feeding steel balls into the fine grinding chamber. The fine grinding cylinder also has several liquid inlet pipes for feeding the synthetic lubricating and rust-preventing composition into the fine grinding chamber.

5. The synthetic lubricating and rust-preventing composition for precision grinding of steel balls according to claim 4, characterized in that: The fine grinding device also includes a support base located below the fine grinding cylinder. A motor housing is provided on the upper surface of the support base. A servo motor is installed inside the motor housing. The output shaft of the servo motor is coaxially connected to the fine grinding shaft. The end of the fine grinding cylinder is mounted on the side of the motor housing via a flange.

6. The synthetic lubricating and rust-preventing composition for precision grinding of steel balls according to claim 5, characterized in that: The support base has a discharge trough along the axial direction, the trough surface is directly opposite the grinding cylinder, the grinding cylinder has a discharge port for discharging steel balls, a valve is installed in the discharge port, the position of the discharge port is directly opposite the position of the discharge trough, the discharge trough is inclined along the axial direction and has a discharge hopper with a triangular longitudinal section along the axial extension direction, the discharge hopper is connected to the discharge trough.

7. The synthetic lubricating and rust-preventing composition for precision grinding of steel balls according to claim 5, characterized in that: An opening is provided on one side of the motor housing, and a ventilation plate is installed on the opening. Several ventilation holes are evenly distributed on the ventilation plate in an array.

8. The synthetic lubricating and rust-preventing composition for precision grinding of steel balls according to claim 6, characterized in that: The upper surface of the support base is provided with two transverse rods located on both sides of the discharge trough. There are two sets of brackets between the transverse rods and the fine grinding cylinder. The two sets of brackets are evenly arranged along the axis of the discharge trough and the brackets are fixed between the transverse rods and the fine grinding cylinder. Each set of brackets includes a connecting column fixed to the outer surface of the fine grinding cylinder. The bottom of the connecting column is fixed with a connecting plate extending radially along the fine grinding cylinder. The two ends of the connecting plate are fixed with two support columns by bolts. The bottom of the support column is fixed to the transverse rod by bolts.

9. A method of using a synthetic lubricating and rust-preventing composition for precision grinding of steel balls, characterized in that: The synthetic lubricating and rust-preventing composition for precision grinding of steel balls according to any one of claims 1-8 comprises the following steps: Step S1: Mix silicon dioxide, cerium dioxide, fatty acid amide, benzotriazole derivative, stabilizer, dispersant, pH adjuster, and fatty alcohol polyoxyethylene ether according to the mass percentage of the constituent raw materials to form a synthetic lubricating and rust-preventing composition. Mix the synthetic lubricating and rust-preventing composition with a certain amount of water to form a fine grinding fluid. Step S2: Based on step S1, according to the requirements of fine grinding steel balls, fine grinding liquid is delivered into the fine grinding chamber through liquid inlet pipes located at different positions on the fine grinding cylinder, and steel balls are simultaneously fed into the fine grinding chamber through the feed hopper located on the fine grinding cylinder. Step S3: Based on the completion of step S2, start the servo motor. The output shaft of the servo motor drives the fine grinding shaft to rotate so that the fine grinding blades rotate in the spiral direction and drive all the steel balls to move in the spiral direction and disperse them in the fine grinding chamber. During the rotation of the fine grinding blades, shear force, extrusion force and grinding force are forced between the steel balls and the fine grinding liquid, thereby grinding the steel balls. Step S4: After completing step S3, open the valve to open the discharge port on the grinding cylinder, so that all the steel balls and the grinding liquid fall into the inclined discharge trough at the same time, so that the steel balls and the grinding liquid are discharged synchronously and the grinding liquid is recycled and reused.

10. The method of using the synthetic lubricating and rust-preventing composition for precision grinding of steel balls according to claim 9, characterized in that: In step S1, the stabilizer is sodium carboxymethyl cellulose and / or sodium carboxyethyl cellulose, wherein the number average molecular weight of sodium carboxymethyl cellulose and sodium carboxyethyl cellulose is independently 300 to 1400; the dispersant is glycerol and / or polyacrylate; and the pH adjuster is triethanolamine and / or sodium ethoxide.

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