Kev vuam laser tuaj yeem ua tiav los ntawm lub tshuab hluav taws xob laser txuas ntxiv lossis pulsed. Lub hauv paus ntsiab lus ntawm kev vuam laser tuaj yeem muab faib ua kev vuam cua sov thiab kev vuam laser sib sib zog nqus. Lub zog ceev tsawg dua 104 ~ 105 W / cm2 yog kev vuam cua sov, lub sijhawm no, qhov tob ntawm kev yaj, thiab qhov ceev vuam qeeb; Thaum lub zog ceev ntau dua 105 ~ 107 W / cm2, qhov chaw hlau yog concave rau hauv "keyholes" nyob rau hauv qhov kev ua ntawm cua sov, tsim kev vuam sib sib zog nqus, uas muaj cov yam ntxwv ntawm kev vuam ceev ceev thiab qhov sib piv tob-dav loj.
Niaj hnub no, peb yuav tham txog cov kev paub tseem ceeb uas cuam tshuam rau qhov zoo ntawm laser deep fusion welding.
1. Lub zog laser
Hauv laser deep fusion welding, lub zog laser tswj ob qho tib si qhov tob nkag mus thiab qhov ceev ntawm kev vuam. Qhov tob ntawm qhov vuam yog ncaj qha cuam tshuam rau qhov ceev ntawm lub zog ntawm lub teeb thiab yog ib qho haujlwm ntawm lub zog ntawm lub teeb thiab qhov chaw ntawm lub teeb. Feem ntau hais lus, rau ib qho laser beam txoj kab uas hla, qhov tob nkag mus nce nrog rau qhov nce ntawm lub zog ntawm lub teeb.
2. Qhov Chaw Tseem Ceeb
Qhov loj ntawm qhov chaw ntawm lub teeb yog ib qho ntawm cov yam tseem ceeb tshaj plaws hauv kev vuam laser vim nws txiav txim siab qhov ceev ntawm lub zog. Tab sis kev ntsuas nws yog qhov nyuaj rau cov lasers muaj zog heev, txawm hais tias muaj ntau txoj kev ntsuas tsis ncaj qha.
Qhov loj ntawm qhov chaw txwv ntawm qhov tsom ntawm lub teeb tuaj yeem suav tau raws li txoj kev xav ntawm diffraction, tab sis qhov loj ntawm qhov chaw tiag tiag loj dua li qhov nqi xam vim muaj qhov tsis zoo ntawm kev cuam tshuam ntawm lub teeb. Txoj kev ntsuas yooj yim tshaj plaws yog txoj kev iso-temperature profile, uas ntsuas qhov txoj kab uas hla ntawm qhov chaw tsom thiab qhov perforation tom qab daim ntawv tuab raug hlawv thiab nkag mus rau hauv lub phaj polypropylene. Txoj kev no los ntawm kev xyaum ntsuas, ua tus tswv ntawm qhov loj ntawm lub zog laser thiab lub sijhawm ua haujlwm ntawm lub teeb.
3. Cov roj tiv thaiv
Cov txheej txheem vuam laser feem ntau siv cov roj tiv thaiv (helium, argon, nitrogen) los tiv thaiv lub pas dej ua kua, tiv thaiv cov khoom ua haujlwm los ntawm kev oxidation hauv cov txheej txheem vuam. Qhov laj thawj thib ob rau kev siv cov roj tiv thaiv yog los tiv thaiv lub lens tsom los ntawm kev ua qias tuaj ntawm cov pa hlau thiab sputtering los ntawm cov kua dej. Tshwj xeeb tshaj yog nyob rau hauv high-power laser vuam, lub ejecta ua muaj zog heev, nws yog qhov tsim nyog los tiv thaiv lub lens. Qhov cuam tshuam thib peb ntawm cov roj tiv thaiv yog tias nws muaj txiaj ntsig zoo hauv kev tawg cov plasma shielding tsim los ntawm high-power laser vuam. Cov pa hlau nqus cov laser beam thiab ionizes rau hauv plasma huab. Cov roj tiv thaiv nyob ib puag ncig cov hlau vapor kuj ionizes vim cua sov. Yog tias muaj plasma ntau dhau, lub laser beam yog qee yam noj los ntawm plasma. Raws li lub zog thib ob, plasma muaj nyob rau ntawm qhov chaw ua haujlwm, uas ua rau qhov tob weld tsawg dua thiab qhov chaw weld pas dej dav dua.
Yuav ua li cas xaiv cov roj tiv thaiv kom zoo?
4. Tus Nqi Nqus Tau
Qhov kev nqus ntawm cov khoom siv laser nyob ntawm qee yam tseem ceeb ntawm cov khoom siv, xws li qhov nqus, kev cuam tshuam, kev ua kom sov, qhov kub yaj, thiab qhov kub evaporation. Ntawm tag nrho cov yam tseem ceeb, qhov tseem ceeb tshaj plaws yog qhov nqus.
Muaj ob yam uas cuam tshuam rau qhov nqus ntawm cov khoom siv rau lub teeb laser. Thawj qhov yog qhov tsis kam ntawm cov khoom siv. Nws pom tias qhov nqus ntawm cov khoom siv yog proportional rau cov hauv paus plaub fab ntawm qhov tsis kam, thiab qhov tsis kam sib txawv nrog qhov kub thiab txias. Qhov thib ob, qhov xwm txheej ntawm qhov chaw (lossis qhov tiav) ntawm cov khoom siv muaj qhov cuam tshuam tseem ceeb rau qhov nqus ntawm lub teeb, uas muaj qhov cuam tshuam tseem ceeb rau qhov vuam nyhuv.
5. Kev Ceev Vuam
Qhov ceev ntawm kev vuam muaj feem cuam tshuam loj heev rau qhov tob ntawm kev nkag mus. Kev nce qhov ceev yuav ua rau qhov tob ntawm kev nkag mus tsawg dua, tab sis qis dhau yuav ua rau cov khoom siv yaj ntau dhau thiab cov khoom siv vuam hla dhau. Yog li ntawd, muaj qhov ceev ntawm kev vuam tsim nyog rau cov khoom siv tshwj xeeb nrog lub zog laser thiab qee qhov tuab, thiab qhov tob tshaj plaws tuaj yeem tau txais ntawm qhov ceev sib xws.
6. Qhov Ntev Ntawm Lub Lens Uas Pom Kev
Feem ntau, lub lens tsom xam feem ntau ntsia rau hauv lub taub hau ntawm rab phom vuam, feem ntau, qhov ntev focal ntawm 63 ~ 254mm (txoj kab uas hla 2.5 "~ 10") raug xaiv. Qhov loj ntawm qhov chaw tsom xam yog sib npaug rau qhov ntev focal, qhov luv dua qhov ntev focal, qhov me dua qhov chaw. Txawm li cas los xij, qhov ntev ntawm qhov ntev focal kuj cuam tshuam rau qhov tob ntawm kev tsom xam, uas yog, qhov tob ntawm kev tsom xam nce ntxiv nrog rau qhov ntev focal, yog li qhov luv luv focal tuaj yeem txhim kho qhov ceev ntawm lub zog, tab sis vim tias qhov tob ntawm kev tsom xam me me, qhov deb ntawm lub lens thiab cov khoom ua haujlwm yuav tsum tau tswj kom raug, thiab qhov tob ntawm kev nkag mus tsis loj. Vim muaj kev cuam tshuam ntawm kev txau thiab hom laser thaum vuam, qhov tob focal luv tshaj plaws siv hauv kev vuam tiag tiag feem ntau yog 126mm (txoj kab uas hla 5 "). Lub lens nrog qhov ntev focal ntawm 254mm (txoj kab uas hla 10 ") tuaj yeem xaiv thaum cov seam loj lossis qhov vuam xav tau nce los ntawm kev nce qhov loj ntawm qhov chaw. Hauv qhov no, lub zog tso zis laser siab dua (qhov ceev ntawm lub zog) yog qhov yuav tsum tau ua kom tiav qhov nkag mus tob.
Muaj lus nug ntxiv txog tus nqi thiab kev teeb tsa ntawm lub tshuab laser vuam tes
Lub sijhawm tshaj tawm: Cuaj hlis-27-2022