Laser vuam tuaj yeem pom tau los ntawm lub tshuab hluav taws xob txuas ntxiv lossis lub tshuab hluav taws xob. Lub hauv paus ntsiab lus ntawm laser vuam yuav muab faib ua cua sov conduction vuam thiab laser sib sib zog nqus fusion vuam. Lub zog ntom ntom tsawg dua 104 ~ 105 W / cm2 yog cov cua sov ua kom sov, lub sijhawm no, qhov tob ntawm melting, thiab vuam ceev yog qeeb; Thaum lub zog ceev yog ntau tshaj 105 ~ 107 W / cm2, cov hlau nto yog concave rau hauv "keyholes" nyob rau hauv qhov kev txiav txim ntawm tshav kub, sib sib zog nqus fusion vuam, uas muaj cov yam ntxwv ntawm ceev vuam ceev thiab loj qhov tob-dav piv.
Niaj hnub no, peb yuav tsuas yog hais txog kev paub txog cov yam tseem ceeb uas cuam tshuam rau qhov zoo ntawm laser sib sib zog nqus vuam vuam
1. Laser zog
Nyob rau hauv laser sib sib zog nqus fusion vuam, laser hwj chim tswj ob qhov tob tob thiab vuam ceev. Weld qhov tob yog cuam tshuam ncaj qha rau lub teeb hluav taws xob ceev thiab yog qhov ua haujlwm ntawm qhov teeb meem ntawm lub zog hluav taws xob thiab lub teeb pom kev ntawm lub teeb. Feem ntau hais lus, rau ib txoj kab uas hla laser beam, qhov tob tob tob zuj zus ntxiv nrog rau qhov nce ntawm lub zog nqaj.
2. Focal Spot
Beam qhov loj me yog ib qho tseem ceeb tshaj plaws ntawm kev hloov pauv hauv laser vuam vim nws txiav txim siab lub zog ceev. Tab sis kev ntsuas nws yog ib qho kev sib tw rau high-power lasers, txawm hais tias muaj ntau yam kev ntsuas tsis ncaj ncees muaj.
Lub diffraction txwv qhov chaw loj ntawm lub teeb tsom teeb tuaj yeem suav tau raws li qhov kev xav ntawm diffraction, tab sis qhov tseeb qhov chaw loj dua qhov ntsuas tus nqi vim qhov muaj qhov tsis zoo ntawm focal xav. Txoj kev ntsuas qhov yooj yim tshaj plaws yog cov txheej txheem iso-temperature profile, uas ntsuas txoj kab uas hla ntawm qhov chaw focal thiab perforation tom qab daim ntawv tuab yog kub hnyiab thiab nkag mus rau hauv lub phaj polypropylene. Txoj kev no los ntawm kev ntsuas kev xyaum, masters lub laser fais fab loj thiab beam ua lub sij hawm.
3. Kev tiv thaiv roj
Cov txheej txheem vuam laser feem ntau siv cov roj tiv thaiv (helium, argon, nitrogen) los tiv thaiv lub pas dej ua ke, tiv thaiv cov khoom ua haujlwm los ntawm oxidation hauv cov txheej txheem vuam. Qhov thib ob yog vim li cas siv cov roj tiv thaiv yog los tiv thaiv lub tsom iav los ntawm kev sib kis los ntawm cov hlau vapors thiab sputtering los ntawm cov kua dej. Tshwj xeeb tshaj yog nyob rau hauv high-power laser vuam, lub ejecta ua heev haib, nws yog tsim nyog los tiv thaiv lub lens. Qhov thib peb cov txiaj ntsig ntawm kev tiv thaiv roj yog tias nws muaj txiaj ntsig zoo hauv kev cuam tshuam cov ntshav plasma shielding uas tsim los ntawm lub zog siab laser vuam. Cov hlau vapor absorbs lub laser beam thiab ionizes rau hauv cov huab plasma. Cov roj tiv thaiv ib puag ncig cov hlau vapor kuj ionizes vim cua sov. Yog tias muaj cov ntshav ntau dhau lawm, lub laser beam yuav siv tau los ntawm cov ntshav plasma. Raws li lub zog thib ob, plasma muaj nyob rau ntawm qhov chaw ua haujlwm, uas ua rau lub vuam qhov tob tob dua thiab lub pas dej ua ke dav dua.
Yuav ua li cas xaiv cov roj shielding kom zoo?
4. Tus nqi nqus
Lub laser nqus ntawm cov khoom yog nyob ntawm qee yam tseem ceeb ntawm cov khoom, xws li tus nqi nqus, qhov cuam tshuam, thermal conductivity, melting kub, thiab evaporation kub. Ntawm tag nrho cov xwm txheej, qhov tseem ceeb tshaj plaws yog tus nqi nqus.
Ob yam cuam tshuam rau qhov nqus ntawm cov khoom mus rau lub laser beam. Qhov thib ib yog cov coefficient tsis kam ntawm cov khoom. Nws tau pom tias qhov nqus ntawm cov khoom yog proportional rau lub hauv paus square ntawm cov coefficient tsis kam, thiab cov coefficient kuj txawv nrog qhov kub thiab txias. Qhov thib ob, lub xeev saum npoo av (lossis tiav) ntawm cov khoom muaj qhov cuam tshuam tseem ceeb ntawm kev nqus ntawm cov nqaj, uas muaj qhov cuam tshuam loj rau kev siv vuam.
5. Vuam ceev
Qhov vuam ceev muaj qhov cuam tshuam zoo rau qhov tob ntawm kev nkag mus. Kev ua kom nrawm yuav ua rau qhov tob ntawm kev nkag mus ntiav ntiav, tab sis qis dhau yuav ua rau cov khoom siv ntau dhau melting thiab workpiece vuam los ntawm. Yog li ntawd, muaj qhov tsim nyog vuam ceev ntau yam rau ib qho khoom siv nrog qee lub zog laser thiab qee qhov tuab, thiab qhov siab tshaj plaws nkag mus tau ntawm tus nqi sib txuas ceev.
6. Focal Length ntawm lub Focus Lens
Lub tsom iav tsom iav feem ntau yog ntsia rau hauv lub taub hau ntawm rab phom vuam, feem ntau, 63 ~ 254mm (inch 2.5 "~ 10") focal ntev yog xaiv. Kev tsom xam qhov loj me yog proportional rau qhov focal ntev, qhov luv ntawm qhov focal ntev, qhov chaw me me. Txawm li cas los xij, qhov ntev ntawm focal ntev kuj cuam tshuam rau qhov tob ntawm kev ua kom pom tseeb, uas yog, qhov tob ntawm kev ua kom pom tseeb nce synchronously nrog lub focal ntev, yog li qhov luv focal ntev tuaj yeem txhim kho lub zog ceev, tab sis vim tias qhov tob ntawm kev tsom xam me me, qhov deb. nruab nrab ntawm lub lens thiab lub workpiece yuav tsum raug tswj kom raug, thiab qhov tob ntawm kev nkag mus tsis loj. Vim muaj kev cuam tshuam ntawm splashes thiab laser hom thaum vuam, qhov shortest focal tob siv nyob rau hauv qhov tseeb vuam yog feem ntau 126mm (inch 5 "). los yog lub vuam yuav tsum tau nce los ntawm kev nce qhov chaw loj. Nyob rau hauv cov ntaub ntawv no, ib tug ntau dua laser tso zis hwj chim (lub hwj chim ceev) yuav tsum tau ua kom tiav qhov tob tob qhov tob.
Ntau cov lus nug txog handheld laser vuam tshuab nqe thiab configuration
Post lub sij hawm: Sep-27-2022