Segmented defocusing laser polishing method for turbine guide vane of oxygenerator

A laser polishing and oxygen generator technology, which is applied in laser welding equipment, manufacturing tools, metal processing equipment, etc., can solve the problems of high cost of polishing curved surface equipment, and achieve the effect of high efficiency, simple process, and high-efficiency polishing

Active Publication Date: 2021-04-02
ZHEJIANG UNIV OF TECH
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  • Claims
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AI Technical Summary

Problems solved by technology

[0005] In order to overcome the defects existing in the traditional polishing technology of the turbine guide vane of the oxygen generator and the problem of equipment cost incre

Method used

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  • Segmented defocusing laser polishing method for turbine guide vane of oxygenerator
  • Segmented defocusing laser polishing method for turbine guide vane of oxygenerator
  • Segmented defocusing laser polishing method for turbine guide vane of oxygenerator

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Experimental program
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Effect test

Embodiment 1

[0034] Select the stainless steel turbine guide vane in the oxygen generator, its shape is as follows figure 1 As shown, the length and width dimensions are 52mm×28mm, and the thickness is 12mm. The rough surface is pretreated by cleaning and drying.

[0035] According to the defocus range of -5~+5mm for the same polishing effect of the laser, and the size and shape of the turbine guide vane, the rough surface of the guide vane is divided into 3 areas to be polished, and the scanning areas are 14×45mm and 14×25mm respectively. and 14×65mm, the length and width of the scanning area are 1mm more than the edge of the side to be polished to ensure that the side to be polished is covered, and there is an overlapping area with a width of 1mm between each divided area. The division diagram is as follows figure 2 shown. Place the guide vane with the first area to be polished facing up in the atmosphere protection box and fix it.

[0036] Set the laser power to 250W, the scanning sp...

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Abstract

The invention provides a segmented defocusing laser polishing method for a turbine guide vane of an oxygenator. The rough surface of the turbine guide vane is efficiently polished in a laser polishingmode, and segmented defocusing polishing is conducted on the irregular rough surface of the turbine guide vane by means of the characteristic that laser polishing equipment has the same polishing effect under different defocusing amounts; according to the method, according to the defocusing amount range of the laser polishing equipment and the size and shape of the turbine guide vane, the to-be-polished side surface of the turbine guide vane is segmented, and in the defocusing amount range with the same polishing effect, laser polishing is conducted on different segments, so that full-coverage polishing of the irregular surface of the guide vane can be achieved; with adoption of the method, the problems of ultrahigh cost and complex control system caused by introduction of a manipulator and a three-dimensional galvanometer for polishing of irregular curved surfaces are avoided, and the method has the characteristics of high machining precision, simple technological process and small influence on a base material.

Description

technical field [0001] The invention relates to a segmented defocused laser polishing method for turbine guide vanes of an oxygen generator. Background technique [0002] Laser polishing is a new type of laser processing technology. It acts on the rough original metal surface through a focused laser beam spot, causing the metal material surface to protrude and produce thin layers of melting and evaporation, and due to the surface tension and gravity of the material itself Flow occurs due to the action, fills the depressions on the metal surface and solidifies, and finally obtains the ideal surface of the polishing material. Because laser polishing only works on the material layer with a thickness of micron, it has higher processing precision than ordinary laser beam processing metal. It has the incomparable advantages of traditional polishing such as less environmental pollution, high polishing precision, wide range of polishing materials, and small area polishing. [0003...

Claims

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Application Information

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IPC IPC(8): B23K26/12B23K26/352B23K26/60
CPCB23K26/3576B23K26/60B23K26/12
Inventor 姚建华黄锦榜王梁吴国龙
Owner ZHEJIANG UNIV OF TECH
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