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System for parallelly processing microporous texture of mechanical sealing face by femtosecond laser

A technology of femtosecond laser and processing machinery, applied in the field of femtosecond laser application, can solve the problems of low processing efficiency and slow speed, and achieve the effect of improving efficiency, good uniformity and good working conditions

Inactive Publication Date: 2020-03-13
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method adopts a single-point processing technology, and the processing efficiency is low and the speed is slow.

Method used

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  • System for parallelly processing microporous texture of mechanical sealing face by femtosecond laser
  • System for parallelly processing microporous texture of mechanical sealing face by femtosecond laser
  • System for parallelly processing microporous texture of mechanical sealing face by femtosecond laser

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Example 1: A circular microporous texture with helical distribution is processed on a silicon carbide sealing device, and the schematic diagram of the texture to be processed is as follows figure 2 shown.

[0051] The specific processing steps of the present embodiment 1 are: turn on the femtosecond laser 1, and place the optical element according to figure 1 Installed as shown. When the correction lens group 2 is adjusted, the direction of the femtosecond laser coincides with the optical axis of the lens, that is, the beam can irradiate the sealing device 12 to be processed. Adjust the attenuation sheet 3 so that the laser power is 2mW. Adjust the aperture 5 so that the diameter of the laser beam is 7mm. The position of the six-dimensional translation stage 13 is adjusted by the computer 16 so that the sealing device 12 to be processed is on the focal plane of the objective lens 11 . followed by image 3 The phase map is loaded into the spatial light modulator 7 ...

Embodiment 2

[0052] Example 2: Processing a triangular microporous texture with helical distribution on the tungsten carbide sealing device, the schematic diagram of the texture to be processed is as follows Figure 5 shown.

[0053] The specific processing steps of the present embodiment 2 are: turn on the femtosecond laser 1, and place the optical element according to figure 1 Installed as shown. When the correction lens group 2 is adjusted, the direction of the femtosecond laser coincides with the optical axis of the lens, that is, the beam can irradiate the sealing device 12 to be processed. Adjust the attenuation sheet 3 so that the laser power is 4mW. Adjust the aperture 5 so that the diameter of the laser beam is 8mm. The position of the six-dimensional translation stage 13 is adjusted by the computer 16 so that the sealing device 12 to be processed is on the focal plane of the objective lens 11 . followed by Image 6 The phase map is loaded into the spatial light modulator 7 t...

Embodiment 3

[0054] Example 3: Processing the microporous groove texture on the silicon carbide sealing device, the schematic diagram of the texture to be processed is as follows Figure 8 shown.

[0055] The specific processing steps of the present embodiment 2 are: turn on the femtosecond laser 1, and place the optical element according to figure 1 Installed as shown. When the correction lens group 2 is adjusted, the direction of the femtosecond laser coincides with the optical axis of the lens, that is, the beam can irradiate the sealing device 12 to be processed. Adjust the attenuation sheet 3 so that the laser power is 2mW. Adjust the aperture 5 so that the diameter of the laser beam is 7 mm. The position of the six-dimensional translation stage 13 is adjusted by the computer 16 so that the sealing device 12 to be processed is on the focal plane of the objective lens 11 . followed by Figure 9 The phase map of the phase is loaded onto the spatial light modulator 7 through the con...

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Abstract

The invention relates to a system for parallelly processing a microporous texture of a mechanical sealing face by femtosecond laser and belongs to the technical field of femtosecond laser application.According to the method, a phase position is loaded for femtosecond laser through a spatial light modulator, the light field spatial distribution at a focus of the spatial light modulator is modulated, and beams are focused on the surface of a to-be-processed sealing device by means of a 4F system. By matching spatial modulation with a six-dimensional translation platform, the microporous textureon the surface of a mechanical sealing device can be processed quickly and parallelly. According to the system, by carrying out beam spatial shaping by the spatial light modulator, beams of any shapes can be obtained, including round beams, triangular beams and the like. The shape of the micropore can be adjusted randomly. The system has the advantages of parallel processing, high efficiency andgood working condition, and the shape of the micropore can be adjusted randomly and the material of the sealing device is substantially not limited.

Description

technical field [0001] The invention relates to a femtosecond laser parallel processing system for the micropore texture of a mechanical sealing surface, which belongs to the technical field of femtosecond laser application. Background technique [0002] Mechanical seal is the most common technology in modern industry, surface texture technology is widely used in mechanical seal surface. On the one hand, the microporous texture of the sealing end surface can store lubricating oil and form an oil film during operation to reduce friction; on the other hand, it can store wear debris to reduce wear caused by wear debris. By rationally designing the surface microporous texture, friction can be effectively reduced, the sealing effect can be improved, and the service life of the sealing surface can be extended. [0003] Common materials for mechanical seals are silicon carbide, ceramics and cemented carbide. The hardness of these materials is very high, and it is unrealistic to p...

Claims

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Application Information

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IPC IPC(8): B23K26/352B23K26/03B23K26/06B23K26/064B23K26/70
CPCB23K26/032B23K26/0648B23K26/064B23K26/702B23K26/355
Inventor 闫剑锋谢家旺李永健
Owner TSINGHUA UNIV
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