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Self-lubricating anti-attrition composite structure surface manufacturing method based on laser texturing

A composite structure, self-lubricating technology, applied in the direction of lubricating composition, laser welding equipment, manufacturing tools, etc., can solve problems such as lubrication performance limitations, and achieve the effect of prolonging the service life

Active Publication Date: 2014-10-29
XI AN JIAOTONG UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, under the condition of dry friction, the lubrication performance of the artificial regular surface structure on the working surface of the friction pair is limited to a certain extent.

Method used

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  • Self-lubricating anti-attrition composite structure surface manufacturing method based on laser texturing
  • Self-lubricating anti-attrition composite structure surface manufacturing method based on laser texturing
  • Self-lubricating anti-attrition composite structure surface manufacturing method based on laser texturing

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preparation example Construction

[0024] A method for preparing the surface of a self-lubricating antifriction composite structure based on laser texture, comprising the following steps:

[0025] 1) Preparation of laser textured surface structure: refer to figure 1 , using Nd:VAN picosecond pulsed laser to pass through the laser scanning galvanometer processing system 1, to perform texturing treatment on the surface 2 of the material participating in the friction, that is, to ablate or induce an artificial surface structure with micron or nanometer scale, In the surface texturing process, the basic parameters of the picosecond pulse laser are: the laser wavelength λ is 1064nm or 532nm, the pulse frequency f is 1-100KHz, and the pulse width τ is 10ps; the basic parameters of the laser scanning galvanometer processing system 1 are: Laser working distance Fd, laser radiation pulse number N, laser scanning speed S; change parameters to realize micro-nano structured surface: use 1064nm wavelength laser, select 1KHz...

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Abstract

The invention provides a self-lubricating anti-attrition composite structure surface manufacturing method based on laser texturing. Firstly, picoseconds pulse laser beams are used for carrying out surface texturing. Secondly, a solidifiable synthetic lubricant is spin-coated. Thirdly, the lubricant is driven through dielectrophoresis force on a gas-liquid interface to fill inside a structure. Finally, deep solidification is realized through quick laser scanning and heating, and a self-lubricating anti-attrition composite function structure surface with the three-dimensional micro-nanometer structure filled with the lubricant is obtained. According to the self-lubricating anti-attrition composite structure surface manufacturing method based on laser texturing, the laser texturing surface structure is filled with the lubricant solid body with controllable depth and controllable position according to intentions of people, so that functions of the surface structure vary at different positions, for instance, the solid lubricant is stored or wear particles are stored; in this way, the self-lubricating anti-attrition composite function structure surface is manufactured, the wear-resistant anti-attrition properties of the surface are improved, and self lubrication of the surface is also realized.

Description

technical field [0001] The invention belongs to the technical field of laser micromachining, and in particular relates to a method for preparing the surface of a self-lubricating and antifriction composite structure based on laser texture. Background technique [0002] With the development of science and technology, the precision requirements for instruments, equipment and materials are getting higher and higher, and at the same time, higher requirements are put forward for the anti-wear performance of the surface of parts. Regarding anti-friction and wear reduction, the traditional method believes that the smoother the surface, the smaller the friction and the less wear. Usually, many people will choose surface finishing, such as polishing and grinding the surface. Affected by material properties and processing precision, the roughness is always limited. The higher the precision, the higher the cost, and the relationship between the two is exponential. In recent years, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/362B23K26/70C10M169/00
CPCB23K26/361B23K26/702C10M161/00
Inventor 王文君梅雪松刘斌姜歌东王恪典崔健磊王聪李天柔
Owner XI AN JIAOTONG UNIV
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