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Technology method for removing multiple layers of coatings of surface of glass through laser

A glass surface, multi-layer coating technology, applied in the direction of laser welding equipment, manufacturing tools, metal processing equipment, etc., can solve the problems of poor ink edge effect, glass strength drop, affecting the use of glass, etc., to achieve protective glass, high transparency excessive effect

Active Publication Date: 2018-11-30
WUHAN HGLASER ENG CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the existing nanosecond ultraviolet laser can also achieve the purpose of removing the glass surface coating, but after removal, the edge effect of the ink is extremely poor, and the jaggedness is obvious. The most important thing is that the strength of the glass itself drops significantly, which affects the use of the glass itself.

Method used

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  • Technology method for removing multiple layers of coatings of surface of glass through laser
  • Technology method for removing multiple layers of coatings of surface of glass through laser
  • Technology method for removing multiple layers of coatings of surface of glass through laser

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Embodiment 1

[0056] This embodiment provides a laser removal process for multilayer coatings on glass surfaces. The specific implementation of the method includes the following steps:

[0057] 1.1. Build the test platform, select the ultraviolet picosecond laser, set the ultraviolet band, the wavelength is 355nm, the focal length of the ultraviolet lens is 100mm, and the machine is warmed up for 15 minutes. Fix the glass sample on the vacuum adsorption platform, with the ink facing up, adjust the optical path and motion control system, so that the focus of the laser beam is on the upper surface of the ink layer, and the focus defocus is about 0.2mm;

[0058] 1.2. Edit the graphic file, the graphic file size diameter is 5mm, the line filling line spacing is 5μm, the starting angle of the graphic file is 0°, and the automatic rotation fill angle is 45°;

[0059] 1.3. Set the laser processing parameters:

[0060] Ink layer: output power 3W, galvanometer scanning speed 1700mm / s, frequency 100...

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Abstract

The invention belongs to the technical field of laser micromachining and particularly relates to a technology method for removing multiple layers of coatings of the surface of glass through laser. Anink layer, a colorful film layer and an OC0 film layer are sequentially arranged on the surface of a glass sample with the coatings to be removed from top to bottom, and cartographic software is adopted for manufacturing a drawing; a laser light path is adjusted, and light beams of a laser device are focused on the surface of the ink layer of the sample; a CCD vision system is adopted for accurately locating the machining position of the sample; a motion control system moves the sample to the designated machining position; machining parameters of the laser device are set, the drawing is scanned and ablated, and the ink layer, the colorful film layer and the OC0 film layer of the surface of the glass sample are removed sequentially; every time the drawing is scanned and ablated, the drawingis rotated to a certain angle; and every time one layer is removed, the machining parameters of the laser device are changed. By the adoption of the technology method, every time the drawing is machined, a certain angle is rotated, and the situations that the sequence acting on the surface of the sample every time by the laser beams is the same, and edge overlap points and residuals are caused are avoided.

Description

technical field [0001] The invention belongs to the technical field of laser micromachining, and in particular relates to a process method for removing multilayer coatings on glass surfaces by laser. Background technique [0002] The appearance design of the mobile phone has changed from the original style of metal, plastic, glass, etc., to the unified glass-based style. With the application and popularization of touch screens, glass covers are widely used in the covers of smartphones and tablet computers because of their high strength, high hardness, scratch resistance, effective reduction of signal interference, and excellent impact resistance. The panel is made of metal material, which can easily absorb electromagnetic waves and block the transmission and reception of signals. The glass back cover is not only economically more affordable, but also can achieve better back integration, which is better in terms of vision and feel, and can also ensure signal transmission. W...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/36
CPCB23K26/36
Inventor 王建刚程伟雷小锋万景成朱周浩刘慧
Owner WUHAN HGLASER ENG CO LTD
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