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Method for rapidly preparing periodic corrugation structure on basis of premodulation laser

A periodic and corrugated technology, applied in laser welding equipment, welding equipment, manufacturing tools, etc., can solve the problems of complex preparation process, limited application, expensive equipment, etc., and achieve the effect of simple process, low preparation cost and elimination of heat conduction effect

Inactive Publication Date: 2015-06-24
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are defects such as expensive equipment and complicated preparation process, and its application is also limited.

Method used

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  • Method for rapidly preparing periodic corrugation structure on basis of premodulation laser
  • Method for rapidly preparing periodic corrugation structure on basis of premodulation laser
  • Method for rapidly preparing periodic corrugation structure on basis of premodulation laser

Examples

Experimental program
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Effect test

Embodiment 1

[0028] 1) Divide 10×10×4mm 3 The pure magnesium material was polished step by step with No. 400-2000 water sandpaper in turn, cleaned with anhydrous ethanol ultrasonically, and then fixed on the three-dimensional mobile platform in the air environment, and the distance between the mobile platform and the laser was fixed, and the distance was 20cm.

[0029] 2) Install the prefabricated mirror on the head of the laser, and use the prefabricated mirror to premodulate the laser beam.

[0030] 3) Move the above-mentioned metal material in a direction perpendicular to the incident laser beam, and adjust its position on the platform by observing the change in the position of the light spot incident on the surface of the above-mentioned metal material in the imaging system, so that the light spot is perpendicular to the entire surface of the above-mentioned metal material , and make the light spots all fall on the surface of the above metal material. The parameters of the laser are:...

Embodiment 2

[0036] The material is pure titanium, the number of laser bombardments is 200, and other technical steps and process conditions are the same as in Example 1. In this case, it was observed that the surface of pure titanium after pulsed laser irradiation has a structure similar to that of Example 1, such as figure 2 shown.

[0037] The above-mentioned pure magnesium sample with a micron-scale periodic ring structure is placed on a three-dimensional stereo microscope, and the ring structure and depth of the sample surface are tested.

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Abstract

The invention discloses a method for preparing a periodic corrugation structure on the surface of a material by means of nanosecond pulse laser. The method comprises the preparation steps of using absolute ethyl alcohol to perform ultrasonic cleaning after performing mechanical grinding and polishing on the surface of the sample material; adopting a nanosecond pulse laser process, modulating a laser beam through a prefabricated mirror, and enabling the laser beam to be vertically enter the surface of the material after premodulation through the prefabricated mirror in the air environment, and generating the periodic corrugation structure by induction on the surface of the material. The method has the advantages of being simple in process, short in experimental period, low in implementation cost and free of pollution, enables the periodic corrugation structure to be rapidly prepared on the surface of the material, and has huge research significance and application value.

Description

technical field [0001] The invention relates to the field of micro-manufacturing on the surface of metal materials, more specifically, a method for rapidly preparing a periodic micro-corrugated structure on the surface of a material by using a pulsed laser. Background technique [0002] Morphological surface modification technology is to improve the surface characteristics of materials by improving the surface micro-morphology without changing the surface chemical properties. In 1998, Nature reported the research results of corrugations with a certain order by means of prefabricated microstructures. Since then, many methods have been researched and suggested, but up to now there is still no one method that can produce a perfect artificial corrugated structure. Nevertheless, a method based on a regular corrugated structure that is easy to realize in large areas and low-cost to prepare surface micro-nanostructures has been attracting and motivating people to overcome various ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K26/00B23K26/06B23K26/064B23K26/359
Inventor 魏强平瑞婷王伟莉刘爱峰马剑雄
Owner TIANJIN UNIV
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