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Laser blackening or coloring method of a material surface

A blackening and laser technology, applied in laser welding equipment, welding/welding/cutting items, manufacturing tools, etc., can solve problems such as blackening and coloring difficulties, achieve superior heat dissipation performance, improve laser processing efficiency, and high reliability Effect

Active Publication Date: 2016-08-31
杭州银湖激光科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, this solution cannot solve the problem of difficult blackening and coloring of materials such as plastics, organic materials, glass, and semiconductors.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A laser processing method for blackening and coloring the surface of metal or other materials using a 2-micron fiber laser to form micro-nano structures on the surface of the material. The device used includes a high repetition rate, high power, nanosecond short pulse , 2 micron wavelength fiber laser, a laser collimation and beam expansion system, a laser blackening and coloring processing and position control system, a high-speed laser scanning galvanometer, a telecentric laser focusing field lens, a multi-dimensional (horizontal) fixed material to be processed and longitudinal) to move the precision translation stage.

[0031] The 2 micron wavelength fiber laser outputs high repetition rate laser pulses with a pulse width from 20 femtoseconds to 50 picoseconds. These laser pulses pass through a laser collimator and beam expander to form a collimated and expanded laser beam. The laser beam passes through a high-speed laser scanning galvanometer, and then passes throug...

Embodiment 2

[0033] A laser processing method for blackening and coloring the surface of metal or other materials using a 2-micron pulsed fiber laser to form micro-nano structures on the material surface, using a high repetition rate, high-power, short-pulse, 2-micron wavelength fiber laser , a laser collimator and beam expander, a laser blackening and coloring processing and position control system, a lens laser focusing optical system, and a multi-dimensional (horizontal and vertical) mobile precision translation stage that fixes the material to be processed.

[0034] The 2 micron wavelength fiber laser outputs high repetition rate laser pulses with a pulse width from 20 femtoseconds to 50 picoseconds. These laser pulses pass through a laser collimator and beam expander to form a collimated and expanded laser beam. The laser beam passes through a lens laser focusing optical system to form a vertically incident and focused laser spot on the surface of the processed material. The focused la...

Embodiment 3

[0036] A laser processing method for blackening and coloring the surface of metal or other materials using a 2-micron pulsed fiber laser to form micro-nano structures on the surface of metals and other materials, using a high repetition rate, high power, short pulse, 2 micron wavelength Fiber laser, a laser collimator and beam expander, a laser material blackening and coloring processing and position control system, a reflective laser focusing optical system, and a multi-dimensional (horizontal and vertical) moving precision translation stage.

[0037] The 2 micron wavelength fiber laser outputs high repetition rate laser pulses with a pulse width from 20 femtoseconds to 50 picoseconds. These laser pulses pass through a laser collimator and beam expander to form a collimated and expanded laser beam. The laser beam passes through a reflective laser focusing optical system to form a vertically incident and focused laser spot on the surface of the processed material. The focused l...

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Abstract

The invention discloses a method for darkening or coloring the surface of a material. The surface of the material is irradiated through an ultra-short pulse laser, and a submicron-order periodic structure is formed on the surface of the material, so that the processed area of the surface of the material is darkened or colored. The method is characterized in that the material is a non-metallic solid material, the pulse width of the ultra-short pulse laser is from 20 femtoseconds to 50 picoseconds, and the wave length of the ultra-short pulse laser is 1.8-2.2 microns. By limiting the wave length and the pulse width of the pulse laser, laser darkening and coloring of the non-metallic material, especially a plastic material are achieved through the method. Compared with a processing method by adopting an ultra-fast solid laser, the method has higher reliability, laser processing efficiency can be greatly improved, and the requirements of industrialized mass production can be satisfied.

Description

technical field [0001] The invention relates to a laser material processing method, in particular to a method for laser blackening or coloring a material surface, especially a method for surface treatment of non-metallic materials. Background technique [0002] With the progress of high-power ultrafast laser processing on the surface of materials such as metals and the research on the formation mechanism of micro-nanostructures of materials, a method based on ultra-short laser pulse processing directly forms micro-nanostructures on the surface of materials, especially metal materials, so as to form micro-nanostructures on the surface of materials. The technology of surface blackening and coloring has been greatly developed internationally [A.Y.Vorobyev and Chunlei Guo, Colorizing metals with femtosecond laser pulses, APPLIED PHYSICSLETTERS 92, 041914, 2008; Min Huang, Fuli Zhao, Ya Cheng, Ningsheng Xu, Zhizhan Xu, Large area uniform nanostructures fabricated by direct femtos...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K26/00
CPCB23K26/0006B23K26/352B23K2103/00B23K2103/42
Inventor 蒋仕彬
Owner 杭州银湖激光科技有限公司
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