Raws li kev tsim khoom thoob ntiaj teb xav tau kev tiv thaiv ib puag ncig, kev ua tau zoo, thiab qhov tseeb, laser tu- kev hloov pauv tsis yog- kev sib cuag, muaj kuab paug- dawb, siab -txhim kho qhov chaw kho tshuab- yog coj lub kiv puag ncig ntsuab rau kev lag luam khoom siv ntoo.
Kev tshawb fawb tau pom tias los ntawm kev tswj cov laser tsis zoo (xws li wavelength, lub zog, thiab pulse dav), laser tu tuaj yeem tshem tawm cov kab mob zoo ntawm cov chaw ntoo -xws li xim, kua nplaum, av, thiab pwm - yam tsis muaj kev puas tsuaj rau hauv qab ntoo substrate. Nws yog qhov tshwj xeeb tshaj yog tsim rau cov khoom siv ntoo zoo nkauj, carvings intricate, thiab kev kho dua tshiab ntawm keeb kwm artifacts. Tsis tas li ntawd, kev kho laser saum npoo tuaj yeem hloov cov xim ntawm cov ntoo, txhim kho qhov chaw ntub dej, txhim kho cov txheej txheem kev ua haujlwm, thiab ua rau muaj kev tiv thaiv corrosion thiab mildew.
Laser ntxuav keeb kwm ntoo kho
Saib tom ntej, nrog rau kev sib koom ua ke ntawm cov cuab yeej ntse xws li beam shaping, adaptive focusing, thiab tiag- lub sij hawm saib xyuas, nrog rau cov khoom siv maj mam txo qis, laser ntxuav tshuab yog npaj los ua lub luag haujlwm tseem ceeb hauv high-cov rooj tog zaum kawg, kev tsim kho vaj tsev keeb kwm, thiab cov khoom siv ntoo remanufacturing rau kev lag luam tseem ceeb.
Laser Cleaning vs. Ib txwm tu: Cov ntsiab lus zoo ntawm Laser tu
Cov kev txwv ntawm Kev Tso Cai Ntoo Ntoo:
Kev lag luam khoom siv ntoo nthuav dav ntau yam kev siv, los ntawm kev tsim cov rooj tog zaum thiab kho kom zoo nkauj architectural mus rau artisanal carving, qhov chaw tu qhov chaw thaum lub sij hawm tsim khoom yog qhov tseem ceeb heev. Txoj kev tu ib txwm siv-xws li kev siv tshuab sanding, tshuaj hnyav tu, thiab siab - ntxuav dej siab- feem ntau raug kev txom nyem los ntawm ntau qhov kev txwv. Cov txheej txheem no feem ntau xav tau cov khoom siv (piv txwv li, abrasives, tshuaj reagents), tsim cov khib nyiab thib ob, nce nqi ua haujlwm, thiab nyuaj rau automate. Lawv kuj koom nrog kev siv zog ua haujlwm siab thiab tawm tsam kom ntseeg tau tias kev tu kom zoo ib yam.
Raws li cov txheej txheem kev kho mob saum npoo av, laser tu muaj qhov zoo tshwj xeeb uas muab cov kev daws teeb meem tshiab rau kev daws cov teeb meem tau hais tseg hauv kev lag luam khoom ntoo. Laser tu tshuab siv siab -lub zog pulsed lasers rau irradiate ntoo nto, instantly vaporizing los yog tshem tawm cov av, xim, los yog oxide txheej thaum tawm hauv lub substrate tsis puas.
Cov txiaj ntsig tseem ceeb ntawm Laser Cleaning:
1. Precise Control:Lub laser qhov chaw txoj kab uas hla tuaj yeem hloov kho rau 0.1-5 hli, ua rau nws tsim nyog rau kev kho thaj chaw ntawm cov ntoo nrog cov qauv nplej nyuaj.
2. Environmental Friendliness:Tsis siv cov kuab tshuaj tshuaj, txo VOC emissions thiab ua raws li EU REACH ib puag ncig cov qauv.
3. Kev sib piv ua tau zoo:Cov kev sim qhia tau hais tias kev ntxuav 1 m² ntawm cov xim qub los ntawm ntoo siv sijhawm 3-5 feeb xwb, txhim kho kev ua haujlwm tau zoo los ntawm 50% piv rau cov tshuab xuab zeb.
Mechanism ntawm Laser Ntxuav:
Photothermal Effect (Ablation):Thaum cov khoom paug nqus tau siab - lub zog laser beams, lawv qhov kub thiab txias nce siab hauv lub sijhawm luv luv (nanoseconds lossis picoseconds), tshaj lawv qhov chaw vaporization lossis kub kub. Qhov no ua rau tam sim ntawd evaporation los yog thermal expansion, ua kom cov kab mob raug tshem tawm ntawm lub substrate nto nyob rau hauv daim ntawv ntawm kev poob siab tsis. Qhov no mechanism yog tshwj xeeb tshaj yog zoo rau tshem tawm cov xim, nplaum residues, thiab hnyav av los ntawm cov ntoo.
Photochemical nyhuv:Rau qee yam kab mob tshwj xeeb, siv luv luv - wavelength lasers xws li ultraviolet (UV) lub teeb tso cai rau lawv lub zog siab ib leeg -photon zog ncaj qha mus ua txhaum cov tshuaj sib txuas ntawm cov kab mob, decomposing lawv mus rau hauv volatile me me - cov tshuaj molecule, yog li ua tiav tsis yog -thermal "cold" Txoj kev no ua rau muaj kev cuam tshuam thermal tsawg thiab yog qhov tsim nyog rau kev kho cua sov-sensitive wood nto thiab cov khoom muaj txiaj ntsig zoo.
Cov txheej txheem tseem ceeb hauv Wood Laser Cleaning: Customized, Tsis yog -Kev tu kom puas
Kev ua tau zoo ntawm laser tu tsis yog txiav txim los ntawm ib qho tseem ceeb, tab sis qhov tshwm sim los ntawm kev sib koom ua ke ntawm ntau yam tsis xws li wavelength, lub zog, mem tes ntev, thiab scanning ceev. Kev xaiv qhov sib xyaw ua ke tsim nyog rau cov khoom siv ntoo sawv cev yog qhov kev sib tw tseem ceeb hauv kev ua tiav kev ua tau zoo, tsis yog - ua kom puas tsuaj. Qhov kev xaiv ntawm laser qhov chaw txiav txim siab lub wavelength.
Nd: YAG Laser (1064 nm):Qhov no tam sim no yog hom siv dav tshaj plaws, nthuav tawm kev nqus zoo los ntawm ntau yam kab mob xws li xim, xeb, thiab roj stains, thaum muaj qhov nkag mus rau hauv ntoo. Nws tau raug pov thawj zoo rau kev tu cov ntaub ntawv mos, suav nrog ntoo.
Laser tu tshuab rau kev lag luam ntoo
CO₂ Laser:Ntoo nthuav tawm qhov nqus tau siab heev ntawm qhov wavelength no, ua rau nws tsim nyog rau kev txiav thiab engraving ntoo. Kev ceev faj heev yog yuav tsum tau siv thaum siv nws los ntxuav daim ntaub ntawv, vim nws tuaj yeem ua rau cov substrate hlawv yooj yim.
Ultraviolet (UV) Laser:Siv cov nyhuv photochemical los ua "kev ua haujlwm txias," ua kom muaj kev cuam tshuam thermal tsawg. Hauv txoj kev xav, nws yog qhov tsim nyog rau kev kho cov khoom muaj txiaj ntsig thiab cua sov-sensitive ntoo artifacts, txawm tias cov khoom siv cov nqi siab dua.
Lub zog thiab lub zog ceev:Lub zog siab dhau heev tuaj yeem ua rau charring, discoloration, los yog combustion ntawm ntoo nto. Kev tshawb fawb qhia meej tias thaum siv 1064 nm laser los ntxuav cov khoom ntoo, lub zog ceev yuav tsum tau tswj nruj me ntsis hauv qab 1.5 J / cm² kom tsis txhob muaj kev puas tsuaj rau cov ntoo.
Pulse Duration:Lub sijhawm luv luv (piv txwv li, nanoseconds ns, picoseconds ps), ntau lub zog ntawm lub laser ua rau ntawm qhov chaw, ua rau muaj cua sov tsawg dua rau hauv cov substrate - txhais tau tias ib qho me me thermal- thaj tsam cuam tshuam. Rau cov cua sov-sensitive ntoo, siv luv- mem tes los yog ultra- luv- mem tes lasers yog qhov tseem ceeb kom ua tiav qhov tseeb, tsis yog - ua kom huv.
Scanning Speed thiab Repetition Rate:Ob qhov kev ntsuas no sib koom ua ke txiav txim siab kev ua haujlwm ntawm kev ntxuav thiab cov cua kub sib xyaw ua ke. Yog tias qhov scanning nrawm dhau los yog qhov rov ua dua siab dhau, lub laser yuav rov ua dua ntawm tib qhov chaw, yooj yim ua rau ntoo hlawv. Hloov chaw, qhov no yuav ua rau kev tu tsis tiav.
Yog xav paub ntxiv txog kev paub txog qhov tsis zoo thiab tsis yog -kev puas tsuaj, saibprecision ntoo kho.
Laser Ntxuav rau Ntoo: Tiag -Lub Sijhawm Demo ntawm Xim Tshem Tawm
Daim ntawv thov tseem ceeb ntawm Laser ntxuav hauv kev lag luam khoom ntoo: Daim ntawv thov tseem ceeb
Kev siv nws cov txiaj ntsig thev naus laus zis, kev tu lub laser qhia tau tias muaj peev xwm ua tau zoo nyob thoob plaws ntau ntu ntawm cov khoom lag luam ntoo. Cov xwm txheej tseem ceeb ntawm daim ntawv thov muaj xws li:
1. High-Xaiv Rooj Tog Zaum Kawg Manufacturing thiab Refinishing:
Hauv kev tsim cov rooj tog zaum, cov lasers tuaj yeem siv tau los ua kom cov nplaum nplaum ntau dhau uas tawm tom qab ntug banding, ua ntej - kho MDF board npoo los txhim kho cov nplaum nplaum, los yog strip xim txheej los ntawm vintage rooj tog rau kev kho dua tshiab. Lawv qhov tsis yog- abrasive xwm khaws cia siab - tus nqi ntoo substrate. Lasers zoo tshem tawm cov kab mob xws li resin thiab pwm los ntawm cov ntoo, ua kom cov xim tom qab adhesion. Piv txwv li, tom qab kev kho laser, ntoo ntoo pom tau tias muaj kev txhim kho ntawm cov xim adhesion ntawm qib 2 txog qib 4 raws li ASTM D3359 tus qauv.
2. Historic Building & Wooden Artifact Restoration:
Qhov no yog ib qho ntawm ntau tshaj - thaj chaw thov rau laser ntxuav tshuab. Rau intricate carvings thiab zoo nkauj moldings nrog complex relief qauv, tsoos cov cuab yeej yog ib qho nyuaj rau nkag mus thiab yooj yim ua rau kev puas tsuaj. Laser ntxuav tuaj yeem xaiv tshem tawm cov txheej txheem oxidation yam tsis muaj kev puas tsuaj rau cov ntoo qub. Cov ntaub ntawv tshawb fawb los ntawm lub koom haum German Fraunhofer qhia tias 20W fiber ntau laser ua haujlwm ntawm 0.1 mm / s tuaj yeem tshem tawm 90% ntawm cov pwm stains los ntawm cov ntoo thuv; Txawm li cas los xij, rau cov ntoo ntoo denser, lub zog yuav tsum tau nce mus rau 40W. A 1064 nm wavelength laser ua tiav qhov tseeb ntawm qhov tob ntawm 0.05 hli ntawm ntoo qhib.
3. Kev ntxuav ntawm Ntoo Pwm:
Hauv cov txheej txheem xws li ntoo thermoforming, pwm feem ntau khaws cov residual resin thiab adhesives. Laser tu enables sai, npaum pwm tu, yog li pab tau ntau lawm efficiency thiab cov khoom zoo.
Nrog ntoo,pob zeb nto restorationyog ib qho pov thawj cuab yeej cuab tam- thiab architecture- kev lag luam siv tib lub tshuab.
Ntoo yog ib qho ntawm ntau yamlaser ntxuav hla cov ntaub ntawvdaim ntawv thov them rau hauv peb cov txheej txheem kev lag luam tag nrho.