阅读说明：本技术 一种高表面光洁度圆球加工方法 (Method for processing high-surface-smoothness ball ) 是由 郑东宣 于 2019-11-19 设计创作，主要内容包括：本发明涉及球形研磨加工领域,提供了一种高表面光洁度圆球加工方法,所述加工方法包括如下步骤：(1)倒角工序：将方形的珠坯放入倒角机中,珠坯从方形成为圆形球即可；(2)粗磨工序：将步骤(1)所得的圆形球放入粗磨机中,粗磨至圆形球的精度在-0.01～0.01mm即可；(3)精磨工序：将步骤(2)粗磨所得的圆形珠坯放入精磨机中,加入第一研磨液进行精磨,精磨至圆形球的精度在-0.005～0.005mm即可；(4)超精磨工序：将步骤(3)精磨所得的圆形珠坯放入精磨机中,加入第二研磨液进行超精磨,(5)抛光工序：将步骤(4)超精磨所得的圆形珠坯放入抛光机中,加入抛光液进行抛光,抛光至成品球。(The invention relates to the field of spherical grinding processing, and provides a method for processing a ball with high surface smoothness, which comprises the following steps: (1) chamfering: putting the square bead blanks into a chamfering machine, and forming the bead blanks into round balls from the square; (2) coarse grinding: placing the round balls obtained in the step (1) into a rough grinding machine, and roughly grinding until the precision of the round balls is-0.01 mm; (3) and (3) fine grinding process: putting the round bead blanks obtained by the coarse grinding in the step (2) into a refiner, adding a first grinding fluid for fine grinding, and performing fine grinding until the precision of the round balls is-0.005 mm; (4) and (3) ultra-precision grinding: putting the round bead blank obtained by fine grinding in the step (3) into a fine grinder, adding a second grinding fluid for ultra-precision grinding, (5) polishing: and (4) putting the round bead blank obtained by the ultra-precision grinding in the step (4) into a polishing machine, adding polishing liquid for polishing, and polishing to obtain a finished ball.)

1. A method for processing a round ball with high surface finish, the method comprising the steps of:

(1) chamfering: putting the square bead blank into a chamfering machine, coating diamond dust on the u surface of the lower disc of the chamfering machine, sleeving the square bead blank in a metal ring, sticking the inner ring firmly by using a cowhells skin, turning and grinding to obtain a round ball from the square bead blank;

(2) coarse grinding: placing the round balls obtained in the step (1) into a rough grinding machine, and roughly grinding until the precision of the round balls is-0.01 mm; the lower grinding disc of the rough grinding machine is plated with carborundum, the whole disc is a flat disc, the downward surface of the upper grinding disc is adhered with cowhells, and the upper disc is provided with a material taking hopper;

(3) and (3) fine grinding process: putting the round bead blanks obtained by the coarse grinding in the step (2) into a refiner, adding a first grinding fluid for fine grinding, and performing fine grinding until the precision of the round balls is-0.005 mm; the lower grinding disc of the refiner adopts a V-shaped groove and is not plated with corundum, and the downward surface of the upper grinding disc is adhered with beef tendon skin;

(4) and (3) ultra-precision grinding: putting the round bead blank obtained by fine grinding in the step (3) into a fine grinder, and adding a second grinding fluid to perform ultra-precision grinding so that the precision reaches-0.001 mm and the surface smoothness is 0.00025 mu m; the downward surface of the upper millstone of the refiner is directly ground by a pig iron plate and/or a copper plate plane without using beef tendon,

(5) and (3) polishing: and (4) putting the round bead blank obtained by the ultra-precision grinding in the step (4) into a polishing machine, adding polishing liquid for polishing, and polishing the round bead blank to a finished ball by using a rotary pressing mode and a medium pressing mode in the polishing process.

2. The method for processing a high-surface-finish spherical ball according to claim 1, wherein the raw materials in the first abrasive liquid are at least one of a first diamond powder, a first suspending agent, and a lubricant; the raw materials in the second grinding fluid are at least one of second diamond powder, first suspending agent and lubricant.

3. The method for processing a high surface finish ball according to claim 2, wherein the first abrasive fluid comprises the first diamond powder, the first suspending agent, and the lubricant in a weight ratio of 1: (1-5): (5-10); the weight ratio of the second diamond powder, the first suspending agent and the lubricant in the second grinding fluid is 1: (1-5): (5-10).

4. The method for high surface finish spherical ball machining according to claim 2, wherein the first suspending agent is an oily suspending agent.

5. The method for processing high-surface-finish round balls according to claim 4, wherein the oil suspending agent is a high-molecular polyether hydrocarbon and/or an acid group-containing copolymer.

6. The method for high surface finish spherical machining according to claim 1, wherein the polishing liquid is a rare earth oxide, a second suspending agent; the weight ratio of the cerium oxide to the second suspending agent is 1 (3-8).

7. The method for high surface finish spherical ball processing according to claim 5, wherein the second suspending agent is an aqueous suspending agent.

8. The method for processing high-surface-finish round balls according to claim 7, wherein the aqueous suspending agent is a polyether polar hydrocarbon containing an alkali group and/or an alcoholic organic solvent.

9. The high surface finish spherical machining method according to claim 6, wherein the rare earth oxide is a basic group polar compound modified rare earth oxide.

10. A high surface smoothness round ball produced by the high surface smoothness round ball processing method according to any one of claims 1-9, wherein the surface smoothness of the high surface smoothness round ball is 0.00020 μm to 0.00035 μm.

Technical Field

The invention relates to the field of spherical grinding processing, in particular to a high-surface-finish ball and a processing method thereof.

Background

With the improvement of the whole level of the manufacturing industry, electromechanical products are continuously developed towards miniaturization and precision, such as high-precision micro milling machines, computer hard disks, micro motors and the like, and rotating moving parts of the electromechanical products need to adopt high-performance micro bearings. Therefore, the tiny sphere has gained a great market demand as one of the most critical elements in the micro bearing. The sphere is an important element in roundness measuring instruments, gyros, bearings and precision measurement, is often used as a reference of precision measurement, has a very important position in precision equipment and precision machining, and is widely applied to various fields of aerospace, high-speed railways, navigation systems, petrochemical engineering and the like. The surface finish also has a great influence on the performance of the workpiece. Due to the rapid development of the mechanical, electronic, and optical industries, the demands for the quality and structural miniaturization of precision machined surfaces are increasing, so that surface finish measurements are emerging as an increasingly important place. Aiming at the problem that the existing sphere processing method can not meet the fine processing requirement of realizing high surface finish degree of the micro sphere.

Disclosure of Invention

In order to solve the above technical problem, a first aspect of the present invention provides a method for processing a ball with high surface finish, the method comprising the steps of:

(1) chamfering: putting the square bead blank into a chamfering machine, coating diamond sand on the u surface of the lower disc of the chamfering machine, sleeving the square bead blank in a metal ring, sticking the inner ring firmly by using a cowhells skin, turning and grinding, and forming the square bead blank into a round ball;

(2) coarse grinding: placing the round balls obtained in the step (1) into a rough grinding machine, and roughly grinding until the precision of the round balls is-0.01 mm; the lower grinding disc of the rough grinding machine is plated with carborundum, the whole disc is a flat disc, the downward surface of the upper grinding disc is adhered with cowhells, and the upper disc is provided with a material taking hopper;

(3) and (3) fine grinding process: putting the round bead blanks obtained by the coarse grinding in the step (2) into a refiner, adding a first grinding fluid for fine grinding, and performing fine grinding until the precision of the round balls is-0.005 mm; the lower grinding disc of the refiner adopts a V-shaped groove and is not plated with corundum, and the downward surface of the upper grinding disc is adhered with beef tendon skin;

(4) and (3) ultra-precision grinding: putting the round bead blank obtained by fine grinding in the step (3) into a fine grinder, and adding a second grinding fluid to perform ultra-precision grinding so that the precision reaches-0.001 mm and the surface smoothness is 0.00025 mu m; the downward surface of the upper millstone of the refiner is directly ground by a pig iron plate and/or a copper plate plane without using beef tendon,

(5) and (3) polishing: and (4) putting the round bead blank obtained by the ultra-precision grinding in the step (4) into a polishing machine, adding polishing liquid for polishing, and polishing the round bead blank to a finished ball by using a rotary pressure mode and a medium pressure mode in the polishing process.

As a preferred technical solution, the raw materials in the first grinding fluid in the present invention are at least one of first diamond powder, a first suspending agent, and a lubricant; the raw materials in the second grinding fluid are at least one of second diamond powder, first suspending agent and lubricant.

As a preferred technical solution, in the present invention, the weight ratio of the first diamond powder, the first suspending agent, and the lubricant in the first grinding fluid is 1: (1-5): (5-10); the weight ratio of the second diamond powder, the first suspending agent and the lubricant in the second grinding fluid is 1: (1-5): (5-10).

In a preferred embodiment of the present invention, the first suspending agent is an oily suspending agent.

In a preferred embodiment of the present invention, the oily suspension agent is a high molecular weight polyether hydrocarbon and/or an acidic group-containing copolymer.

As a preferred technical scheme, the polishing solution is rare earth oxide and a second suspending agent; the weight ratio of the cerium oxide to the second suspending agent is 1 (3-8).

In a preferred embodiment, the second suspending agent is an aqueous suspending agent.

In a preferred embodiment, the aqueous suspending agent in the present invention is a polyether polar hydrocarbon containing a basic group and/or an alcohol organic solvent.

As a preferable technical scheme, the rare earth oxide is a rare earth oxide modified by polar compounds of basic groups.

The second aspect of the invention provides a high-surface-finish round ball prepared by the high-surface-finish round ball processing method, wherein the surface finish of the high-surface-finish round ball is 0.00020-0.00035 μm.

Compared with the prior art, the invention has the following beneficial effects:

the invention provides a method for processing a round ball with high surface smoothness, which is characterized in that the round ball is processed through the working procedures of chamfering, rough grinding, fine grinding, ultra-fine grinding, polishing and the like, so that the processing efficiency is improved, the round ball has very high surface smoothness, and the standard of various precision instruments on the round ball smoothness can be met; in addition, the invention can be suitable for preparing the round balls with different size requirements, can prepare the round balls with high surface finish degree of 0.5-2mm, and particularly has the most excellent surface finish degree for preparing the round balls with 2mm, 1.5mm and 0.6mm by selecting and changing the process conditions in the processing method and the limits of different conditions of grinding liquid and polishing liquid.

Detailed Description

The technical features of the technical solutions provided by the present invention are further clearly and completely described below with reference to the specific embodiments, and the scope of protection is not limited thereto.

The words "preferred", "more preferred", and the like, in the present disclosure mean embodiments of the invention that may, in some instances, provide certain beneficial results. However, other embodiments may be preferred, under the same or other circumstances. Furthermore, the recitation of one or more preferred embodiments does not imply that other embodiments are not useful, nor is it intended to exclude other embodiments from the scope of the invention.

When a range of values is disclosed herein, the range is considered to be continuous and includes both the minimum and maximum values of the range, as well as each value between such minimum and maximum values. Further, when a range is an integer, each integer between the minimum and maximum values of the range is included. Further, when multiple range-describing features or characteristics are provided, the ranges may be combined. In other words, unless otherwise indicated, all ranges disclosed herein are to be understood to encompass any and all subranges subsumed therein. For example, a stated range from "1 to 10" should be considered to include any and all subranges between the minimum value of 1 and the maximum value of 10. Exemplary subranges of the range 1 to 10 include, but are not limited to, 1 to 6.1, 3.5 to 7.8, 5.5 to 10, and the like.

The invention provides a ball processing method with high surface smoothness, which comprises the following steps:

(1) chamfering: putting the square bead blank into a chamfering machine, coating diamond sand on the u surface of the lower disc of the chamfering machine, sleeving the square bead blank in a metal ring, sticking the inner ring firmly by using a cowhells skin, turning and grinding, and forming the square bead blank into a round ball;

(2) coarse grinding: placing the round balls obtained in the step (1) into a rough grinding machine, and roughly grinding until the precision of the round balls is-0.01 mm; the lower grinding disc of the rough grinding machine is plated with carborundum, the whole disc is a flat disc, the downward surface of the upper grinding disc is adhered with cowhells, and the upper disc is provided with a material taking hopper;

(3) and (3) fine grinding process: putting the round bead blanks obtained by the coarse grinding in the step (2) into a refiner, adding a first grinding fluid for fine grinding, and performing fine grinding until the precision of the round balls is-0.005 mm; the lower grinding disc of the refiner adopts a V-shaped groove and is not plated with corundum, and the downward surface of the upper grinding disc is adhered with beef tendon skin;

(4) and (3) ultra-precision grinding: putting the round bead blank obtained by fine grinding in the step (3) into a fine grinder, and adding a second grinding fluid to perform ultra-precision grinding so that the precision reaches-0.001 mm and the surface finish degree is about 0.00025 mu m; the downward surface of the upper millstone of the refiner is directly ground by a pig iron plate plane without using cattle tendon skin,

(5) and (3) polishing: and (4) putting the round bead blank obtained by the ultra-precision grinding in the step (4) into a polishing machine, adding polishing liquid for polishing, and polishing the round bead blank to a finished ball by using a rotary pressure mode and a medium pressure mode in the polishing process.

In the present invention, the surface finish is a surface finish, which means a uniform meaning.

In some preferred embodiments, the method of processing high surface finish spheres comprises the steps of:

(1) chamfering: putting a square bead blank with the thickness of 2.5 +/-0.3 mm into a chamfering machine, coating diamond grains on the lower disc of the chamfering machine by using a u surface, sleeving the u surface into a metal ring, wherein the height of the metal ring is about 20-40cm, firmly sticking an inner ring by using a thick beef tendon skin with the thickness of 0.3-0.8mm, overturning the bead blank by using a centrifugal force, continuously grinding the corner surface of the square material by using the friction force of the diamond grains, and enabling the bead blank to be a round ball after being used for 1.5-3.5 hours at the rotation speed of 1300 plus or minus 2000 revolutions per minute;

(2) coarse grinding: placing the round balls obtained in the step (1) into a rough grinding machine, and roughly grinding until the precision of the round balls is-0.01 mm; the lower grinding disc of the rough grinding machine is plated with carborundum, the whole disc adopts a flat disc, the downward surface of the upper grinding disc is adhered with cowhide, the upper disc is provided with a material taking hopper, the upper disc is fixed during grinding, the lower disc rotates at the speed of 800 + 1300 rpm, the lower disc is ground from about 2.4 +/-0.3 mm to 2.2 +/-0.1 mmmm for 2.5-3.5 hours;

(3) and (3) fine grinding process: putting the round bead blanks obtained by the coarse grinding in the step (2) into a refiner, adding a first grinding fluid for fine grinding, and performing fine grinding until the precision of the round balls is-0.005 mm; the lower grinding disc of the refiner adopts a V-shaped groove without plating corundum, the downward surface of the upper grinding disc is adhered with cowhells, the distance between two points at the upper end of the V-shaped groove is 2.3 +/-0.1 mm, and the width of the slotting working part of the grinding disc is consistent with the width of a hopper of the upper grinding disc;

(4) and (3) ultra-precision grinding: putting the round bead blank obtained by fine grinding in the step (3) into a fine grinder, and adding a second grinding fluid to perform ultra-precision grinding so that the precision reaches-0.001 mm and the surface smoothness is 0.00025 mu m; the downward surface of the upper millstone of the refiner does not use cow tendon skin, and the refiner directly uses pig iron plate for plane grinding, the distance between two points at the upper end of the V-shaped groove of the lower millstone is 2.2 +/-0.1 mm, and the grinding from 2.12 +/-0.2 mm of the blank to 2.03 +/-0.2 mm needs to be carried out for 9-16 hours at the speed of 800-1300 revolutions per minute;

(5) and (3) polishing: putting the round ball blank obtained by the ultra-precision grinding in the step (4) into a polishing machine, adding polishing liquid to polish, rotating an upper grinding disc and a lower grinding disc clockwise, rotating a middle loose wheel counterclockwise, enabling a blank ball body with the diameter of 2.031mm to freely rotate in the loose wheel, cutting a u-shaped window on the edge of the upper grinding disc, screwing the window in the polishing process, taking out the ball from the window to measure when the ball is thrown to the same size, firstly using a pressure-converting mode in the polishing process to enable the upper grinding disc to be in a hovering state, increasing the pressure of the upper grinding disc in a medium-pressure mode when the ball is thrown to the required size, and throwing the ball to the finished product at the speed of 700 + 1200 rpm for 1.5-3.5 hours to finish polishing, thus obtaining the finished product ball.

In a more preferred aspect, the method for processing a round ball with high surface finish includes the steps of:

(1) chamfering: putting a square bead blank with the thickness of 2.5 +/-0.3 mm into a chamfering machine, plating diamond sand on the lower disc of the chamfering machine by using a u surface, sleeving the u surface into a metal ring, wherein the height of the metal ring is about 30cm, firmly sticking an inner ring by using a thick beef tendon skin with the thickness of 0.3-0.8mm, turning the bead blank by using a centrifugal force, continuously grinding the corner surface of the square blank by using the friction force of the diamond sand, and turning the bead blank into a round ball from the square shape at the rotating speed of 1500 revolutions per minute for 2 hours;

(2) coarse grinding: placing the round balls obtained in the step (1) into a rough grinding machine, and roughly grinding until the precision of the round balls is-0.01 mm; the lower grinding disc of the rough grinding machine is plated with carborundum, the whole disc adopts a flat disc, the downward surface of the upper grinding disc is adhered with cowhide, the upper disc is provided with a material taking hopper, the upper disc is fixed during grinding, the lower disc rotates at the rotating speed of 1000 revolutions per minute, the lower disc is ground to 2.2 +/-0.1 mmmm from about 2.4 +/-0.3 mm, and the grinding time is 3 hours;

(3) and (3) fine grinding process: putting the round bead blanks obtained by the coarse grinding in the step (2) into a refiner, adding a first grinding fluid for fine grinding, and performing fine grinding until the precision of the round balls is-0.005 mm; the lower grinding disc of the refiner adopts a V-shaped groove without plating corundum, the downward surface of the upper grinding disc is adhered with cowhells, the distance between two points at the upper end of the V-shaped groove is 2.3 +/-0.1 mm, and the width of the slotting working part of the grinding disc is consistent with the width of a hopper of the upper grinding disc;

(4) and (3) ultra-precision grinding: putting the round bead blank obtained by fine grinding in the step (3) into a fine grinder, and adding a second grinding fluid to perform ultra-precision grinding so that the precision reaches-0.001 mm and the surface finish degree is 0.00025 +/-0.00001 mu m; the downward surface of an upper millstone of the refiner is not provided with beef tendon skin, the refiner is directly ground by a pig iron plate plane, the distance between two points at the upper end of a V-shaped groove of a lower millstone is 2.2 +/-0.1 mm, and the grinding is carried out at the speed of 900 revolutions per minute for 13 hours from the grinding of 2.12 +/-0.2 mm of a blank to the grinding of 2.03 +/-0.2 mm;

(5) and (3) polishing: putting the round ball blank obtained by the ultra-precision grinding in the step (4) into a polishing machine, adding polishing liquid to polish, rotating an upper grinding disc and a lower grinding disc clockwise, rotating a middle loose pulley counterclockwise, enabling a blank ball body with the diameter of 2.031mm to freely rotate in the loose pulley, cutting a u-shaped window on the edge of the upper grinding disc, screwing the window in the polishing process, polishing to the same size, taking out the ball from the window for measurement, firstly using a pressure conversion mode in the polishing process to enable the upper grinding disc to be in a hovering state, increasing the pressure of the upper grinding disc in a medium pressure mode when the ball is polished to the required size, and polishing the ball finished product at the speed of 900 revolutions per minute for about 2 hours.

In some embodiments, the raw material in the first grinding fluid is at least one of a first diamond powder, a first suspending agent, and a lubricant, respectively; the raw materials in the second grinding fluid are at least one of second diamond powder, first suspending agent and lubricant.

The square bead blank in the invention has a particle size of 2.1-2.8 mm; preferably, the square bead blank has a particle size of 2.5 ± 0.3 mm.

In some preferred embodiments, the raw materials in the first grinding fluid are respectively a combination of first diamond powder, a first suspending agent, and a lubricant; the raw materials in the second grinding fluid are respectively the combination of second diamond powder, first suspending agent and lubricant.

In some embodiments, the weight ratio of the first diamond powder, the first suspending agent and the lubricant in the first grinding fluid is 1: (1-5): (5-10); the weight ratio of the second diamond powder, the first suspending agent and the lubricant in the second grinding fluid is 1: (1-5): (5-10).

In some preferred embodiments, the weight ratio of the first diamond powder, the first suspending agent and the lubricant in the first grinding fluid is 1: 3.5: 7; the weight ratio of the second diamond powder, the first suspending agent and the lubricant in the second grinding fluid is 1: 2.5: 8.

in some embodiments, the first diamond powder has a particle size of 3 to 8 μm; the grain size of the second diamond powder is 1-5 μm; preferably, the first diamond powder has a particle size of 5 μm; the second diamond powder had a particle size of 3 μm.

In some embodiments, the first suspending agent is an oily suspending agent.

In some embodiments, the oily suspending agent is a polymeric polyether hydrocarbon and/or an acidic group-containing copolymer; preferably, the oily suspending agent is an acidic group-containing copolymer.

In some embodiments, the acid group-containing copolymer is not particularly limited, and is preferably available from DisperbykBYK-110.

In some embodiments, the lubricating oil is a white oil.

The white oil in the present invention is not particularly limited, and preferably, the white oil is at least one of No. 3 white oil, No. 5 white oil, and No. 7 white oil; more preferably, the white oil is No. 5 white oil.

In some embodiments, the polishing solution is a rare earth oxide, a second suspending agent; the weight ratio of the rare earth oxide to the second suspending agent is 1: (3-8); preferably, the weight ratio of the rare earth oxide to the second suspending agent is 1: 5.

in some embodiments, the second suspending agent is an aqueous suspending agent.

In some embodiments, the aqueous suspending agent is a polyether polar hydrocarbon containing a base group and/or an alcoholic organic solvent; preferably, the aqueous suspension is an alcohol organic solvent.

In some embodiments, the alcoholic organic solvent is selected from one or more of methanol, ethanol, ethylene glycol, n-propanol, isopropanol, propylene glycol, glycerol, 1-butanol, 2-methyl-1-propanol, 2-methyl-2-propanol; preferably, the alcohol organic solvent is selected from one or more of n-propanol, 1-butanol, 2-methyl-1-propanol and 2-methyl-2-propanol; more preferably, the alcohol organic solvent is 2-butanol.

In some embodiments, the rare earth oxide is a polar compound modified rare earth oxide of a basic group.

In some embodiments, the polar compound containing a basic group is sodium N-decanoyl sarcosinate.

The polar compound modified rare earth oxide of the basic group comprises the following preparation steps:

(1) preparing a rare earth oxide solution with the mass part of 4-6% by using a BYK110 acidic group-containing copolymer solution;

(2) carrying out ultrasonic treatment on the rare earth oxide solution prepared in the step (1) by using ultrasonic waves, wherein the ultrasonic treatment time is 1.5-2.5h, and the ultrasonic power is 1200-1400W;

(3) adding N-decanoyl sarcosine sodium salt accounting for 0.08-0.1% of the mass fraction of the rare earth oxide, mixing, placing in a constant-temperature magnetic stirring water bath, stirring for 3-4h at 40-50 ℃, taking out and cooling to obtain the product.

In some preferred polar compound modified rare earth oxides of said basic groups, the following preparation steps are included:

(1) preparing a rare earth oxide solution with the mass part of 5% by using a BYK110 acidic group-containing copolymer solution;

(2) carrying out ultrasonic treatment on the rare earth oxide solution prepared in the step (1) by using ultrasonic waves, wherein the ultrasonic treatment time is 2 hours, and the ultrasonic power is 1300W;

(3) adding N-decanoyl sarcosine sodium salt accounting for 0.08 percent of the mass fraction of the rare earth oxide, mixing, placing in a constant-temperature magnetic stirring water bath, stirring at 45 ℃ for 3.5h, taking out and cooling to obtain the product.

In some embodiments, the rare earth oxide is selected from the group consisting of scandium oxide, lanthanum oxide, yttrium oxide, cerium oxide; preferably, the rare earth oxide is cerium oxide.

The inventor finds that the surface smoothness of the spheres can be improved by performing ultrasonic treatment and modification of N-decanoyl sodium sarcosinate on cerium oxide, and possible reasons are that the cerium oxide has low surface activity and is easy to agglomerate, the ultrasonic treatment further disperses the cerium oxide particles, the smaller the cerium oxide particles are, the N-decanoyl sodium sarcosinate added can be adsorbed on the surfaces of the cerium oxide particles to enable the surfaces of the particles to be negatively charged, the agglomeration of adjacent particles is prevented under the action of electrostatic repulsion, meanwhile, the long-chain steric hindrance of the outer end molecules of the N-decanoyl sodium sarcosinate is large, the agglomeration of the cerium oxide particles is further prevented, and the two synergistic effects improve the dispersibility of the cerium oxide.

The surface smoothness refers to the small distance and the unevenness of tiny peaks and valleys on the processed surface, has close relation with the matching property, the wear resistance, the fatigue strength, the contact rigidity, the vibration, the noise and the like of mechanical parts, and has important influence on the service life and the reliability of mechanical products.

The second aspect of the invention provides a high-surface-smoothness round ball prepared by the high-surface-smoothness round ball processing method, wherein the surface smoothness of the high-surface-smoothness round ball is 0.00015-0.00035 μm.

In the invention, the outer diameter of the high surface finish ball is measured by using an outer diameter lever ten million rulers, the roundness is measured by using a steel ball roundness measuring instrument, the surface finish is measured under a 40/20 microscope, and the surface finish is also measured by using an interferometer.

The present invention will be specifically described below by way of examples. It should be noted that the following examples are only for illustrating the present invention and should not be construed as limiting the scope of the present invention, and that the insubstantial modifications and adaptations of the present invention by those skilled in the art based on the above disclosure are still within the scope of the present invention. In addition, the starting materials used are all commercially available, unless otherwise specified.