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A precise laser polishing device and method thereof

A laser polishing and precision technology, applied in laser welding equipment, welding equipment, metal processing equipment, etc., can solve the problems that it is difficult to achieve micro-nano scale laser polishing effect, and achieve the effect of convenient construction

Inactive Publication Date: 2017-08-04
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the existence of the diffraction effect, the focus diameter of the laser spot is mostly in the millimeter scale, and it is difficult to achieve the laser polishing effect at the micro-nano scale

Method used

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  • A precise laser polishing device and method thereof
  • A precise laser polishing device and method thereof
  • A precise laser polishing device and method thereof

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Experimental program
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Effect test

preparation example Construction

[0048] ③ Preparation of single-layer micro-nanoparticles: In order to obtain an ideal single-layer neatly arranged micro-nanoparticles, the solution of micro-nanoparticles is ultrasonically treated to prepare a suspension of micro-nanoparticles, using Peltier monomers, and connecting electrodes as heat source. Drop the suspension of micro-nano particles on the surface of the glass plate, place it in a dry and ventilated box, tilt the box at a small angle p, and wait for 24-36 hours to dry completely.

[0049] 2) Surface pretreatment of the workpiece to be polished

[0050] Using mechanical methods, use coarse to fine sandpaper to polish the surface of the workpiece to be polished, and then polish the surface with a polishing machine. After cleaning, test the surface roughness microscopically, requiring Ra<1μm.

[0051] 3) The glass plate covers the workpiece to be polished

[0052] Attach the surface of the pretreated workpiece to be polished to the glass surface with micro-...

Embodiment

[0061] according to Figure 5 The process steps shown, first, use 160 mesh, 240 mesh, 600 mesh, 800 mesh, 1000 mesh, 1200 mesh, 1600 mesh, 2000 mesh sandpaper to polish the surface of the workpiece to be polished, polish the surface with a polishing machine, and clean it with alcohol After cleaning, the microscopic test shows that the surface roughness Ra=0.751μm, and the roughness curve is as follows Figure 6 shown.

[0062] To make a glass plate coated with micro-nano particles, first wash the surface of the glass plate with soapy water, ultrasonically treat it with methanol for 10 minutes, then rinse the glass plate with deionized water, and then use nitric acid and water with a volume ratio of 1:3. The solution was soaked for 24 hours, the glass plate was taken out, rinsed with deionized water, and finally washed with N 2 Gas dry the glass plate and save it for later use.

[0063] Select micronanoparticles as SiO 2 , the micro-nanoparticle size diameter R is 500nm, ul...

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Abstract

The invention provides a precise laser polishing device and a method thereof. According to the method, a glass pane coated with micro-nano particles is attached to the surface of a work-piece to be polished, the micro-nano particles are located between the glass pane and the work-piece to be polished, a pulsed laser device emits pulse lasers, focused pulse light beams radiate the glass pane coated with the micro-nano particles, the micro-nano particles serve as a focusing lens, energy around the micro-nano particles is enhanced after the lasers are focused by the micro-nano particles, the surface of the work-piece to be polished protrudes or the tip part of the work-piece to be polished gets fused, and therefore the polishing effect is realized. According to the precise laser polishing device and the method thereof, the pulse lasers converge and act on the surface of material through the micro-nano particles, and the laser polishing technology within the micro-nano scale range is realized through the local field enhancement effect of the micro-nano particles. The polishing device is convenient to construct, simple and practicable; for work-pieces with complex shapes and appearances to be polished, the polishing effect is still good through the method.

Description

technical field [0001] The invention belongs to the technical field of laser processing, and in particular relates to a precise laser polishing device and a method thereof. Background technique [0002] Laser polishing technology uses laser beams to scan and process the surface of the workpiece, and through the interaction between the laser and the material, the excess substances on the surface are removed to form a smooth plane. It is a new type of material surface treatment technology with the development of laser technology, which fundamentally solves the problems that are difficult or impossible to solve by traditional polishing technology, especially for workpiece surfaces with complex shapes and shapes. The possibility of automatic processing is provided, so laser polishing technology is a promising new material processing technology. [0003] At present, the laser polishing technology mainly studies the influence of laser parameters on the polishing effect. A variet...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K26/352B23K26/60B23K26/082
CPCB23K26/3576
Inventor 佟艳群黄建宇石琳任旭东吴笑漪吕柳姚红兵叶云霞
Owner JIANGSU UNIV
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