Preparation method of closed bearing sealing element

Abstract

The invention discloses a preparation method of a closed bearing sealing element. The preparation method comprises the following steps: S1, preparing materials; s2, a metal framework material and a rubber material are processed through a vulcanization preparation technology to prepare a to-be-treated sealing element; outputting a low-surface-energy substance through the plasma etching machine, and carrying out modification processing on the surface of the sealing element to be processed; s3, outputting a low-surface-energy substance through the plasma etching machine, and carrying out modification processing on the surface of the sealing element to be processed; s4, based on the step S3, the low surface energy substance output by the plasma etching machine is radio frequency plasma, and the sputtering intensity of the radio frequency plasma is 100-500 W; and S5, based on the step S4, the modification processing time of the surface of the to-be-processed sealing element is 1-30 min. The problems that in the prior art, in the using process of a sealing piece of a closed bearing, lubricating grease is separated from a bearing raceway due to the centrifugal force effect and adheres to and accumulates on the sealing piece, consequently, the lubricating grease participating in bearing lubrication is greatly reduced, and the bearing loses efficacy in advance due to poor lubrication are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bearing component machining, in particular to a preparation method of a closed bearing sealing element. BACKGROUND

[0002] Bearings are widely used in various fields of national life. Among them, closed bearings are favored by users due to their compact structure and the absence of an additional lubrication system.

[0003] At present, closed bearings often use grease lubrication, and then use a sealing element for sealing. The sealing element of the traditional closed bearing is mainly composed of a metal framework and sealing rubber. However, during use, the lubricating grease is separated from the bearing raceway due to the action of centrifugal force and adheres and accumulates on the sealing element, which greatly reduces the amount of lubricating grease participating in bearing lubrication, and further leads to poor lubrication and premature failure of the bearing, which seriously affects the service life of the bearing. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides a preparation method of a closed bearing sealing element to solve the problem of the sealing element of the closed bearing in the prior art, in which the lubricating grease is separated from the bearing raceway due to the action of centrifugal force and adheres and accumulates on the sealing element during use, resulting in a large reduction in the amount of lubricating grease participating in bearing lubrication and premature failure of the bearing due to poor lubrication.

[0005] To achieve the above-mentioned purpose, the present application provides a preparation method of a closed bearing sealing element, comprising the following processes: S1, preparing a metal framework material and a rubber material; S2, processing the metal framework material and the rubber material into a to-be-processed sealing element through a vulcanization preparation process; and outputting a low surface energy substance from a plasma etching machine and modifying the surface of the to-be-processed sealing element; S3, outputting a low surface energy substance from a plasma etching machine and modifying the surface of the to-be-processed sealing element; S4, based on step S3, the low surface energy substance output by the plasma etching machine is a radio frequency plasma, and the radio frequency plasma sputtering intensity is 100 to 500 W; S5, based on step S4, the modification processing time of the surface of the to-be-processed sealing element is 1 to 30 min.

[0006] The present application further provides that the radio frequency plasma is a plasma.

[0007] The present application further provides that the gas flow of the plasma output by the plasma etching machine is 10 to 30 SCCM.

[0008] ​The present invention further comprises: the metal skeleton material is prepared by a phosphating process.

[0009] The advantages of adopting the above technical solution are: this technology uses conventional sealing components as the base and utilizes radio frequency... Plasma surface modification of seals reduces surface energy, significantly decreasing grease adhesion and accumulation. This allows grease thrown onto the seal by centrifugal force to return to the bearing raceway for lubrication, preventing insufficient lubrication and effectively extending the service life of closed bearings. Furthermore, the seal fabrication process is clear and controllable, requiring only the following steps: phosphating the metal skeleton of the seal and vulcanizing it with rubber to prepare the finished seal, followed by radio frequency plasma treatment of the seal. The surface treatment process can be completed in just two core steps, and the key parameters of plasma treatment ( With clearly defined and controllable gas flow rates (10-30 sccm, power 100-500W, time 1-30 min), requiring no complex equipment or additional processes, this technology boasts high production efficiency and can be easily adapted to industrial-scale production, demonstrating broad application prospects. Furthermore, this technology uses conventional sealing components (metal skeleton + rubber) as a base for surface modification, eliminating the need for significant alterations to the basic structure of the seal. It is compatible with existing conventional manufacturing processes for closed-type bearing seals, reducing the cost and barriers to technology application and facilitating its widespread adoption in existing bearing production systems. This provides a rapid solution for extending the lifespan of closed-type bearings. Attached Figure Description

[0010] Figure 1 This is a view of the surface roughness of the rubber material before plasma sputtering in this invention; Figure 2 This is a view of the surface roughness of the rubber material after plasma sputtering in this invention; Figure 3 This is a view showing the change in water contact angle of the rubber material before and after plasma sputtering in this invention; Figure 4 This is a view of the elemental composition of the sealing element before plasma sputtering in this invention; Figure 5 This is a view of the elemental composition of the sealing component after plasma sputtering in this invention. Detailed Implementation

[0011] This invention provides a method for preparing a closed bearing seal, comprising the following steps: S1. Prepare the metal frame material and rubber material; S2. The metal skeleton material and rubber material are processed into a sealing component to be treated through a vulcanization process; a low surface energy material is output through a plasma etching machine and the surface of the sealing component to be treated is modified. S3, outputting a low surface energy substance by a plasma etching machine and modifying and processing the surface of the to-be-processed sealing element; S4, based on step S3, the low surface energy substance output by the plasma etching machine is a radio frequency plasma, and the radio frequency plasma sputtering intensity is 100 to 500 W; S5, based on step S4, the modification and processing time of the surface of the to-be-processed sealing element is 1 to 30 min.

[0012] Further, the radio frequency plasma is a plasma.

[0013] Further, the gas flow of the plasma output by the plasma etching machine is 10 to 30 SCCM.

[0014] Further, the metal skeleton material is prepared by a phosphating process. Specific embodiment 1: Preparation process of experimental example: the metal skeleton is phosphated and vulcanized with silicone rubber to prepare a sealing element, and then treated by a radio frequency plasma, wherein the gas flow is 20 sccm, the power is 200 W, and the time is 5 min; a sealing element for prolonging the service life of a closed bearing is obtained.

[0016] Preparation process of comparative example: the metal skeleton is phosphated and vulcanized with rubber to prepare a conventional sealing element.

[0017] The sealing element prepared in the above experimental example and the conventional sealing element prepared in the comparative example are installed on a bearing for bearing durability test, and after the test, the bearing is disassembled, weighed and calculated to obtain the proportion of the lubricating grease remaining on the sealing element and in the bearing, as shown in the following table: As can be seen from the above figure, the lubricating grease remaining rate on the sealing element of the experimental example is lower than that of the comparative example, and the lubricating grease remaining rate in the bearing of the experimental example is higher than that of the comparative example. The sealing element prepared by surface modification of the present application can reduce the adhesion of lubricating grease on the sealing element, so that more lubricating grease remains in the bearing, thereby prolonging the service life of the bearing. The sealing element for prolonging the service life of the closed bearing prepared by the method of the present application has a simple process flow, high production efficiency, is suitable for industrialized scale production, and has a wide application prospect.

[0018] ​The above shows and describes the basic principles and main features of the present application and the advantages of the present application, and those skilled in the art should understand that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application, and various changes and improvements can be made without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the claimed present application, and the scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A method of making a closed bearing seal, characterized by: Comprise the following process: S1, prepare metal skeleton material and rubber material; S2, the metal skeleton material and the rubber material are processed into a to-be-processed sealing element through a vulcanization preparation process; a low surface energy substance is output by a plasma etching machine, and the surface of the to-be-processed sealing element is processed and modified; S3, a low surface energy substance is output by a plasma etching machine, and the surface of the to-be-processed sealing element is processed and modified; S4, based on step S3, the low surface energy substance output by the plasma etching machine is a radio frequency plasma, and the radio frequency plasma sputtering intensity is 100 to 500 W; S5, based on step S4, the processing and modification time of the surface of the to-be-processed sealing element is 1 to 30 min.

2. A method of making a closed bearing seal according to claim 1, wherein: The radio frequency plasma is Plasma.

3. A method of making a closed bearing seal according to claim 2, wherein: The plasma etching machine outputs The gas flow of the plasma is 10 to 30 SCCM.

4. The method of claim 1, wherein: The metal skeleton material is processed and prepared through a phosphating process.

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