Daim Ntawv Thov Tshawb Xyuas ntawm Laser Tu Tshuab ntawm Hlau Hlau

1. Kev ntxuav tu laser tsis tsuas yog tshem tawm cov qias neeg tab sis kuj tseem txhim kho kev txhim kho corrosion

Laser tu  tshuab tuaj yeem kov yeej qhov luv ntawm kev ua kom huv kev siv tshuab, xws li kev siv sijhawm ua haujlwm, kev siv dag zog, ib puag ncig kev ua qias tuaj, thiab lwm yam, thiab ua lub luag haujlwm tseem ceeb hauv kev tshem cov hlau hauv av. Tsis tas li ntawd, cov teeb meem laser tu tau txuas ntxiv tswj tau kom cov nplaim ntawm cov hlau raug ntxuav kev siv tshuaj thiab tsim kev tiv thaiv txheej txheej nrog cov tuab ntawm ob peb microns los tiv thaiv xeb ntxiv ntawm cov hlau. Kev ntxuav qhov tsis tu ncua siv laser tu thev naus laus zis tuaj yeem ua rau qhov kev txhim kho corrosion ntawm cov khoom siv hlau nce 3 mus rau 4 zaug.

2. Qhov kev xaiv ntawm hom laser thiab lub ntsej muag ntev muaj qhov sib cuam tshuam tseem ceeb ntawm kev ua kom huv

As shown in the figure, the absorption coefficients of various metals change with wavelength. At λ=916nm-1200nm, most metals have higher absorption coefficients in this band, and organic matter has relatively strong laser absorption in this band. Because of this, in terms of absorption rate, combining the comparative advantages of various aspects, fiber lasers have demonstrated unique advantages in all aspects. The organic pollution layer absorbs the laser strongly, and the temperature of the organic pollution layer quickly rises to the evaporation point to vaporize, thereby achieving the purpose of removing the pollution layer without damaging the substrate. Then determine the energy threshold of laser cleaning, the energy threshold of laser cleaning will determine the effect of laser cleaning. Selecting the appropriate laser cleaning energy threshold requires comprehensive consideration of the material's performance, microstructure, morphological defects, and the effects of laser wavelength and pulse width.

Daim Ntawv Thov-Tshawb Nrhiav-rau-Laser-Kev Tu-Technology-ntawm-Hlau-Qhov Chaw

3. Kev tsim nyog laser teeb meem lub kaum sab xis ua rau kev ua kom huv si ntau dua

Thaum lub laser tau tshwm sim ntawm qee lub kaum sab xis, lub laser ncaj qha mus rau hauv qab cov pob nplaum, ua rau ntau dua kev nyuaj siab thermoelastic. Piv nrog qhov xwm txheej ib txwm, cov kuab paug pov tseg yooj yim dua. Ntxiv rau, qhov kev tshawb pom pom tias nrog qhov nce ntawm qhov qaij lub kaum, qhov chaw hluav taws xob laser tau dav dua. Thaum lub kaum sab xis qaij yog 20 degrees, thaj tsam ntawm thaj chaw hauv thaj chaw huv yuav tsum yog li 10 zaug ntawm qhov kev tshwm sim ib txwm, uas ua rau kev ua haujlwm zoo dua ntawm kev ntxuav laser.

4. Kho kom raug tus nqi defocusing txhim kho cov nyhuv ntxuav laser

Kev ua kom huv si yuav txawv rau qhov sib txawv ntawm cov tshuaj tiv thaiv. Kev tu yog qhov txheej txheem ntawm cov nplaim tawg ntawm cov khoom tawg yooj yim thaum nws tiv thaiv, thiab thaum tus nqi ntawm lub teeb meem loj zuj zus, qhov kev tshem tawm ntawm cov xim txheej tau hloov los ntawm kev ya mus rau vaporization.

Txhawm rau txhawm rau ua kom tiav cov txiaj ntsig ntawm kev ntxuav laser rau ntawm cov hlau, nws yog qhov tsim nyog los txiav txim siab txog kev ntxuav cov tshuab laser, kev ntxuav tu qauv, hom laser, lub ntsej muag laser, lub zog ceev, lub zog, lub ntsej muag zaus, lub sijhawm ntsuas, thiab lub sijhawm laser teeb meem. Pulsed laser ua tau zoo ntxuav qhov corrosion ntawm carbon steel nto. Thaum lub nthwv dej yog 1064nm, lub zog laser yog 500W, cov mem tes zaus yog 10kHz, mem tes dav yog 120ns, qhov khiav ceev yog 60mm / s, thiab tus nqi lap yog 5%. Qhov kev xeb yog qhov zoo tshaj plaws, thiab muaj cov pa oxygen tsis pom nyob rau hauv lub laser tu ntawm qhov chaw ntawm xeb, micro-thaj chaw, cov kab thiab cov ntsiab lus. Tsuas yog kev kawm paub cov txheej txheem tsis dhau ntawm cov txheej txheem tuaj yeem tsim cov kev siv tshuab laser ua kom huv.


Sijhawm Tshaj Tawm: Lub Rau Hli-28-2020
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