As global manufacturing demands for environmental sustainability, efficiency, and precision continue to rise, laser cleaning-a disruptive, non-contact, pollution-free, high-precision surface treatment technology-is ushering in a green revolution for the traditional wood products industry. Kev tshawb fawb qhia tau hais tias los ntawm kev tswj cov laser tsis zoo-xws li wavelength, lub zog, thiab pulse dav- nws tuaj yeem tshem tawm cov kab mob zoo li xim, kua nplaum, stains, thiab pwm los ntawm cov khoom ntoo yam tsis muaj kev puas tsuaj rau lub substrate. Qhov no ua rau nws tshwj xeeb tshaj yog tsim los kho cov ntoo veneers, intricate carvings, thiab keeb kwm artifacts. Laser nto kho kuj tuaj yeem hloov cov xim ntawm cov ntoo, txhim kho qhov ntub dej, txhim kho cov khoom siv txheej txheej, thiab txhawb kev tiv thaiv{10}} xeb thiab tiv thaiv - pwm kev ua haujlwm. 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, ua ke nrog maj mam txo cov nqi khoom, laser ntxuav tshuab tau npaj los ua lub luag haujlwm tseem ceeb hauv high{14}}kev tsim cov rooj tog zaum kawg, kev tsim kho vaj tsev qub, thiab cov khoom siv ntoo remanufacturing. Nws yuav dhau los ua tus tsav tsheb tseem ceeb txhawb kev lag luam mus rau kev txawj ntse thiab ntsuab hloov pauv thiab hloov kho dua tshiab.
Daim ntawv thov ntawm Laser Ntxuav hauv Ntoo Carving Restoration
Cov kev txwv ntawm Txoj Kev Tu Ntoo Tsob Ntoo Tsob Ntoo:
Kev lag luam khoom siv ntoo nthuav dav ntau yam kev lag luam los ntawm kev tsim cov rooj tog zaum thiab kev kho kom zoo nkauj architectural mus rau artisanal carving, qhov chaw tu qhov chaw thaum lub sij hawm tsim khoom yog qhov tseem ceeb. Cov txheej txheem ib txwm muaj xws li kev xuab zeb xuab zeb, tshuaj lom neeg ua kom huv, thiab siab -lub siab dej ntxuav lub ntsej muag muaj kev txwv loj. Cov txheej txheem no feem ntau xav tau cov khoom siv (piv txwv li, abrasives, chemicals), tsim cov khoom pov tseg thib ob, nce nqi ua haujlwm, thiab tawm tsam nrog automation - ua rau kev ua haujlwm hnyav - cov txheej txheem hnyav thiab kev tu tsis zoo. Laser tu, raws li ib qho kev kho mob saum npoo av, muaj cov kev daws teeb meem tshiab los daws cov teeb meem no hauv kev lag luam khoom ntoo los ntawm nws qhov tshwj xeeb zoo. Laser tu tshuab siv siab -lub zog hluav taws xob lasers los irradiate ntoo nto, ua rau stains, xim, los yog oxidation txheej kom vaporize los yog tev tawm tam sim ntawd thaum tawm hauv lub substrate tsis puas.
Cov txiaj ntsig tseem ceeb ntawm Laser Cleaning:
1. Precision Control: Spot txoj kab uas hla adjustable ntawm 0.1-5mm, zoo tagnrho rau localized kho ntawm complex ntoo grain qauv;
2. Environmental Sustainability: Tshuaj- cov kuab tshuaj dawb, txo VOC emissions, ua raws li EU REACH ib puag ncig cov qauv;
3. Kev sib piv kev ua tau zoo: Kev sim ua kom pom kev tu 1㎡ ntawm cov xim qub ntawm cov ntoo siv sijhawm li 3-5 feeb xwb, 50% sai dua li cov tshuab xuab zeb.
Laser Cleaning Mechanism:
Yees duab-thermal Effect (Ablation): Thaum cov khoom paug nqus tau siab- lub zog laser beams, lawv qhov kub thiab txias sai sai hauv nanoseconds lossis txawm tias picoseconds, tshaj vaporization lossis boiling point. Qhov no ua rau sai vaporization los yog thermal expansion, ua rau cov kab mob tev tawm ntawm lub substrate nto raws li kev poob siab tsis. Cov txheej txheem no tshwj xeeb tshaj yog tiv thaiv cov xim, nplaum residues, thiab hnyav av ntawm cov ntoo.
Photochemical Effect: Rau cov kab mob tshwj xeeb, luv - wavelength lasers xws li ultraviolet (UV) tuaj yeem ua txhaum cov tshuaj lom neeg ncaj qha nrog lawv ib leeg siab -photon zog, decomposing cov kab mob mus rau hauv cov me me molecules volatile. Qhov no ua tiav tsis yog -thermal "txias" stripping. Txoj kev no tsim kom muaj cua sov tsawg heev- thaj chaw muaj kev cuam tshuam, ua rau nws zoo tagnrho rau cov cua sov- cov ntoo rhiab heev thiab cov khoom qub qub.
Cov txheej txheem tseem ceeb hauv Wood Laser Tu
Laser ntxuav kev ua tau zoo yog txiav txim siab tsis yog los ntawm ib qho tseem ceeb tab sis los ntawm kev sib koom ua ke ntawm cov tsis muaj xws li wavelength, lub zog, mem tes ntev, thiab scanning ceev. Xaiv qhov zoo tshaj plaws parameter ua ke rau cov khoom ntoo sawv cev rau cov kev sib tw tseem ceeb hauv kev ua kom tau zoo, tsis yog -kev puas tsuaj. Laser xaiv txiav txim lub wavelength.
Nd: YAG Laser (1064 nm): Tam sim no yog hom siv dav tshaj plaws, nws nthuav tawm cov kev nqus tau zoo rau ntau yam kab mob xws li xim, xeb, thiab roj stains. Nws qhov tob tob nkag mus rau hauv ntoo tau ua pov thawj zoo rau kev tu cov ntaub ntawv mos, nrog rau cov ntoo.
CO₂ Laser: Ntoo nthuav tawm qhov nqus tau siab heev ntawm qhov nthwv dej no, ua rau nws feem ntau siv rau kev txiav ntoo thiab kos duab. Kev ceev faj heev yog yuav tsum tau ua hauv kev siv tshuaj ntxuav, vim nws tuaj yeem ua rau substrate ablation yooj yim.
Ultraviolet (UV) Laser: Ua tiav "kev ua haujlwm txias" los ntawm cov teebmeem photochemical nrog tsawg kawg thermal cuam tshuam. Txoj kev xav zoo tshaj plaws rau kev kho cov khoom muaj txiaj ntsig thiab cov cua sov-sensitive ntoo artifacts, tab sis cov khoom siv cov nqi siab dua.
Power and Energy Density: Excessive energy density can cause charring, discoloration, or even combustion of the wood surface. Kev tshawb fawb qhia meej tias thaum siv 1064 nm lasers 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: Shorter pulse durations (piv txwv li, nanoseconds (ns), picoseconds (ps)) mloog zoo rau lub sij hawm laser lub zog raug rau ntawm qhov chaw, txo cov cua kub diffusion mus rau hauv lub substrate thiab txo cov cua sov- thaj tsam cuam tshuam. Rau cov cua sov-sensitive ntoo, siv luv- mem tes los yog ultra- luv- pulse lasers yog qhov tseem ceeb rau kev ua tiav qhov tseeb, tsis yog - rhuav tshem.
Scanning Speed thiab Repetition Rate: Cov kev ntsuas no sib koom ua ke txiav txim siab kev ua haujlwm ntawm kev ntxuav thiab thermal tsub zuj zuj. Kev ntsuas qeeb qeeb qeeb lossis rov ua kom rov ua tau ntau dua ua rau rov raug laser ntawm tib qho chaw, ua rau muaj kev pheej hmoo ntawm ntoo hlawv. Hloov pauv, kev rov ua dua tsis txaus yuav ua rau kev tu tsis tiav.
Cov ntawv thov tseem ceeb ntawm Laser Cleaning Machine hauv Kev Lag Luam Ntoo Khoom
Kev siv nws cov txiaj ntsig thev naus laus zis, kev tu lub laser qhia tau tias muaj peev xwm siv tau zoo nyob rau ntau ntu ntawm cov khoom lag luam ntoo. Application Scenario:
1. High-High Furniture Manufacturing thiab Remanufacturing: Nyob rau hauv cov rooj tog tsim khoom, nws precisely tshem tawm cov nplaum nplaum tom qab vaj huam sib luag edging, pretreats MDF npoo los txhim kho txheej adhesion, los yog strips qub finishes rau rooj tog restoration. Nws tsis yog -kev puas tsuaj ntuj tiv thaiv siab - muaj nuj nqis ntoo substrates. Lasers tuaj yeem tshem tawm impurities xws li cob thiab pwm stains los ntawm cov ntoo saum npoo, txhim kho adhesion rau cov txheej tom ntej. Piv txwv li, laser- kho ntoo thuv tau pom cov xim adhesion nce qib ntawm qib 2 txog qib 4 (ASTM D3359 tus qauv).
2. Restoration of Historic Buildings and Wooden Artifacts: Qhov no yog ib qho tseem ceeb tshaj plaws rau kev siv tshuab laser tu. Cov cuab yeej siv niaj hnub tawm tsam kom nkag mus tau yooj yim cov duab kos duab thiab kho kom zoo nkauj moldings yam tsis muaj kev puas tsuaj. Lasers tuaj yeem tshem tawm oxidation txheej txheej los ntawm txheej yam tsis muaj kev puas tsuaj rau cov ntoo qub. Ib qho kev tshawb fawb los ntawm lub koom haum German Fraunhofer qhia tau hais tias 20W fiber ntau laser ntawm 0.1mm / s tuaj yeem tshem tawm 90% ntawm cov pwm los ntawm cov ntoo thuv, thaum ntoo qhib yuav tsum muaj 40W laser vim nws qhov ceev dua. Lasers nrog lub wavelength ntawm 1064nm qhia txog kev tu qhov tob ntawm tsawg dua 0.05mm ntawm ntoo qhib.
3. Ntoo Pwm Ntxuav: Thaum cov txheej txheem zoo li ntoo kub- xovxwm tsim, resin thiab nplaum residues nyob rau hauv pwm. Laser tu enables sai thiab npaum pwm huv si, txhim khu ntau lawm efficiency thiab cov khoom zoo.
