Laser machining method for fine scribing structure at ceramic surface

A laser processing method and ceramic surface technology, which is applied in the field of ceramic surface processing, can solve the problems of line width precision limitation, etc., and achieve the effect of low cost, uniform line diameter and simple operation

Inactive Publication Date: 2014-06-18
BEIJING UNIV OF TECH
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  • Application Information

AI Technical Summary

Problems solved by technology

At present, the laser processing of the fine structure on the surface of the material is generally processed by direct irradiation of the laser beam. The line width accuracy of the structure is limited by the spot size, and the structure quality is often unable to avoid the existence of fine cracks and recondensation layers due to the influence of the pulse width.

Method used

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  • Laser machining method for fine scribing structure at ceramic surface
  • Laser machining method for fine scribing structure at ceramic surface
  • Laser machining method for fine scribing structure at ceramic surface

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Embodiment Construction

[0027] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0028] The invention provides a method for realizing a fine scribe line structure on the ceramic surface by using an optical fiber to guide a picosecond-level pulse width laser. Such as figure 1 Shown: described method comprises the steps:

[0029] [101] Peel off the coating layer on the single-mode optical fiber and lay it on the ceramic surface, in a single laying or multiple close-packed way;

[0030] [102] Scanning the optical fiber coverage area on the ceramic surface with a picosecond pulse width laser, the picosecond pulse width laser generates a local light field enhancement effect under the guidance of the optical fiber on the ceramic surface, and processes grooves; The distance from the ceramic surface to the focal point of...

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Abstract

The invention discloses a laser machining method for a fine scribing structure at a ceramic surface. The method comprises the steps of peeling coatings on optical fibers and paving onto the ceramic surface; scanning and radiating an optical fiber covering area on the ceramic surface with a picosecond pulse width laser, using the picosecond pulse width laser to generate a local optical field enhancing effect by the guide of the optical fibers on the ceramic surface and machining grooves at the ceramic surface; setting laser parameters according to the groove machining conditions in the step II, scanning and radiating the optical fiber covering area paved on the ceramic surface by using the picosecond pulse width laser, and machining a fine groove array same as the optical fibers in arrangement on the ceramic surface. The picosecond pulse width laser beam is guided by adopting the optical fibers, the ceramic surface with high-melting point, high-hardness and high-brittleness physical properties is obtained, multiple fine scribing lines can be obtained at the same time, edges of the scribing lines have no cracks and heat affected zones and are smooth, the size diameters of the lines are uniform, and the minimal diameter limitation of the focus light beams on the scribing line diameter is broken through.

Description

technical field [0001] The invention relates to the technical field of ceramic surface processing, in particular to a laser processing method and system for a fine-grained structure on a ceramic surface, which is suitable for processing a two-dimensional fine-grained structure on a ceramic surface. Background technique [0002] Ceramic materials have the characteristics of light weight, high temperature resistance, corrosion resistance, high strength and good chemical stability. It is because of their good physical and chemical properties that they are widely used in the fields of electronics, aviation, machinery and biomedicine. For example, the ceramic anilox roller, which is the heart of flexographic printing, is the most critical component to ensure the quality of ink transfer and ink distribution. It is necessary to process fine line structures such as mesh cells or linear grooves on the ceramic surface. Such material surface microstructure manufacturing is currently wi...

Claims

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Application Information

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IPC IPC(8): B23K26/364B23K26/402
CPCB23K26/40B23K26/18B23K26/364B23K2103/52
Inventor 季凌飞李健胡炎吴燕鲍勇
Owner BEIJING UNIV OF TECH
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