Cov Kev Zoo Tshwj Xeeb ntawm Laser Welding Technology
1. Kev Siv Tshuab Laser Vuam
Lub Ntsiab Cai Ua Haujlwm: Cov xov xwm ua haujlwm laser (xws li kev sib xyaw ntawm CO₂ thiab lwm yam roj, YAG yttrium txhuas garnet siv lead ua, thiab lwm yam) raug zoo siab hauv ib txoj kev tshwj xeeb kom oscillate rov qab thiab tawm hauv lub qhov resonant, tsim cov teeb hluav taws xob stimulated. Thaum lub teeb kov lub workpiece, nws lub zog raug nqus. Vuam tuaj yeem ua tiav thaum qhov kub mus txog qhov melting ntawm cov khoom.
2. Cov Txheej Txheem Tseem Ceeb ntawmKev Siv Tshuab Laser Vuam
(1) Lub zog ceev
Thaum lub zog tsawg, txheej saum npoo yuav siv sijhawm ob peb milliseconds kom txog thaum kub. Ua ntej ua pa dej ntawm qhov chaw, txheej hauv qab yaj ua ntej, ua rau muaj kev sib txuas zoo.
(2) Lub zog laser pulse waveform
Qhov kev cuam tshuam ntawm cov hlau hloov pauv tas li thaum lub sijhawm laser pulse. Nws poob qis sai sai thaum qhov kub ntawm qhov chaw ncav cuag qhov melting point thiab ruaj khov ntawm tus nqi tas li thaum qhov chaw nyob hauv lub xeev molten.
(3) Laser Pulse Dav
Txawm li cas los xij, qhov dav ntawm lub zog ntev yuav txo qhov muaj zog siab tshaj plaws. Yog li ntawd, qhov dav ntawm lub zog ntev dua feem ntau yog siv rau hauv kev vuam cua sov, ua rau cov kab sib txuas dav, ntiav uas tsim nyog rau kev vuam ntawm cov phaj nyias thiab tuab.
Txawm hais li ntawd los, lub zog qis tshaj plaws tuaj yeem ua rau muaj cua sov ntau dhau. Txhua yam khoom siv muaj qhov dav ntawm lub zog zoo tshaj plaws uas ua rau qhov vuam nkag mus tau zoo tshaj plaws.
(4) Txo Qhov Nyiaj
(5) Hom Defocus
Raws li kev tshawb fawb txog geometric optics, lub zog ceev ntawm cov dav hlau sib npaug ntawm qhov chaw vuam (hauv qhov zoo thiab qhov tsis zoo defocus) yog kwv yees li tib yam. Txawm li cas los xij, hauv kev xyaum, cov duab ntawm lub pas dej vuam sib txawv me ntsis. Qhov tsis zoo defocus ua rau muaj kev nkag mus rau hauv lub pas dej vuam ntau dua, uas yog cuam tshuam nrog lub tshuab tsim lub pas dej vuam.
(6) Kev Ceev Vuam
Rau ib lub zog laser thiab cov khoom siv tuab, muaj qhov ceev vuam zoo tshaj plaws, uas qhov siab tshaj plaws ntawm qhov vuam nkag mus tau ntawm qhov ceev sib xws.
(7) Cov roj tiv thaiv
Cov pa roj tiv thaiv ua peb txoj haujlwm tseem ceeb:
- Tiv thaiv lub pas dej vuam los ntawm kev ua qias tuaj hauv huab cua.
- Tiv thaiv lub lens tsom mus rau ntawm cov pa hlau uas ua rau muaj kev sib kis thiab cov dej ntws uas yaj - ib qho tseem ceeb hauv kev vuam laser muaj zog heev uas cov dej ntws muaj zog heev.
- Ua kom cov huab plasma uas tsim tawm thaum lub sijhawm vuam laser muaj zog heev. Cov pa hlau nqus cov zog laser thiab ionizes rau hauv plasma; cov plasma ntau dhau tuaj yeem ua rau lub zog laser tsis muaj zog.
3. Cov Teebmeem Tshwj Xeeb ntawm Laser Welding Technology
- Cov Nyhuv ntawm Kev Ntxuav Weld: Thaum lub teeb laser ci ntsa iab rau ntawm qhov vuam seam, cov oxide impurities hauv cov khoom siv nqus lub zog laser zoo dua li cov hlau puag. Cov impurities no raug cua sov sai, ua pa, thiab raug ntiab tawm, txo cov ntsiab lus impurity hauv qhov vuam. Yog li,laser vuamtsis yog tsuas yog zam kev ua qias tuaj ntawm cov khoom ua haujlwm xwb tab sis kuj tseem ua kom cov khoom huv si.
- Kev Cuam Tshuam ntawm Kev Poob Siab Los Ntawm Duab: Thaum muaj zog heev, qhov kev siv laser ua rau cov hlau hauv qhov vuam sai sai. Nyob rau hauv qhov siab ntawm cov pa hlau ceev ceev, cov hlau yaj hauv lub pas dej vuam yuav tawg. Lub zog poob siab loj kis mus tob rau hauv cov khoom, tsim ib lub qhov me me. Thaum lub teeb laser txav mus los thaum vuam, cov hlau yaj nyob ib puag ncig yuav puv lub qhov tseem ceeb thiab khov kho kom ua rau muaj qhov vuam muaj zog, nkag mus tob.
- Qhov Cuam Tshuam ntawm Qhov Txuas Hauv Kev Vuam Sib Nqus: Thaum lub teeb laser nrog lub zog ceev txog li 10⁷ W/cm² irradiated cov khoom siv, qhov nrawm ntawm lub zog nkag mus rau hauv qhov vuam ntau dua li qhov nrawm ntawm kev poob cua sov los ntawm kev conduction, convection, thiab radiation. Qhov no ua rau cov hlau ua pa sai sai hauv thaj chaw laser-irradiated, tsim ib lub qhov txuas hauv lub pas dej vuam hauv qab cov pa siab.
Zoo li lub qhov dub uas muaj hnub qub loj heev, lub qhov tseem ceeb nqus yuav luag tag nrho cov zog laser uas tshwm sim, ua rau lub teeb nkag mus ncaj qha rau hauv qab lub qhov tseem ceeb. Qhov tob ntawm lub qhov tseem ceeb txiav txim siab qhov tob ntawm qhov vuam.
- Cov nyhuv ntawm laser tsom mus rau ntawm cov phab ntsa sab ntawm lub qhov tseem ceeb: Thaum lub sijhawm tsim cov qhov tseem ceeb hauv lub pas dej vuam, cov teeb laser uas tshwm sim rau ntawm cov phab ntsa sab ntawm lub qhov tseem ceeb feem ntau muaj lub kaum sab xis loj. Cov teeb no cuam tshuam tawm ntawm cov phab ntsa sab thiab nthuav mus rau hauv qab ntawm lub qhov tseem ceeb, ua rau muaj zog sib tshooj hauv lub qhov tseem ceeb. Qhov xwm txheej no, hu ua cov nyhuv ntawm cov teeb pom kev ntawm cov phab ntsa sab ntawm lub qhov tseem ceeb, ua rau lub zog laser hauv lub qhov tseem ceeb zoo dua thiab pab txhawb rau lub peev xwm tshwj xeeb ntawm kev vuam laser.
4. Cov txiaj ntsig ntawm Laser Welding Technology
- Txheej Txheem Vuam Ceev Heev: Lub sijhawm luv luv ntawm laser irradiation ua rau vuam sai, uas tsis yog tsuas yog ua rau muaj kev tsim khoom ntau ntxiv xwb tab sis kuj txo qis qhov oxidation ntawm cov khoom siv thiab txo qhov chaw cuam tshuam los ntawm cua sov. Qhov no ua rau nws zoo tagnrho rau kev vuam cov khoom uas rhiab heev rau cua sov xws li transistors. Kev vuam laser tsis tsim cov slag vuam thiab tshem tawm qhov xav tau kev tshem tawm oxide ua ntej vuam. Nws tuaj yeem ua haujlwm vuam los ntawm iav, ua rau nws tsim nyog rau kev tsim cov cuab yeej me me.
- Kev Sib Txuas Lus Dav Dav: Kev vuam laser tsis tuaj yeem koom ua ke tsis yog cov hlau zoo sib xws xwb tab sis kuj tseem muaj cov hlau sib txawv, thiab txawm tias cov hlau-tsis yog hlau sib xyaw ua ke. Piv txwv li, cov voj voog sib xyaw ua ke nrog cov khoom siv ceramic nyuaj rau vuam siv cov txheej txheem ib txwm muaj vim yog qhov chaw yaj siab ntawm cov khoom siv ceramics thiab qhov xav tau kom tsis txhob muaj kev nyuaj siab. Kev vuam laser muab kev daws teeb meem yooj yim rau cov ntawv thov zoo li no. Txawm li cas los xij, nco ntsoov tias kev vuam laser tsis haum rau txhua qhov kev sib xyaw ua ke ntawm cov khoom sib txawv.
5. Cov Xwm Txheej Thov thiab Kev Lag Luam ntawm Laser Vuam
- Kev Siv Hluav Taws Xob Los Vuam: Feem ntau siv rau kev ua kom raug, xws li kev ua ntug ntawm cov ntawv hlau nyias thiab kev tsim khoom siv kho mob.
- Kev Vuam thiab Sib Txhuam Sib Tob tob: Siv dav hauv kev lag luam tsheb. Kev vuam sib txhuam sib tob tob yog siv rau kev vuam lub cev tsheb, kev hloov pauv, thiab cov plhaub sab nraud; kev sib txhuam feem ntau yog siv rau kev sib dhos lub cev tsheb.
- Kev Siv Laser Conduction Vuam Rau Cov Khoom Uas Tsis Yog Hlau: Muaj ntau yam kev siv, suav nrog kev tsim khoom siv rau cov neeg siv khoom, kev tsim tsheb, kev tsim khoom siv hluav taws xob, thiab thev naus laus zis kho mob.
- Kev Vuam Sib Xyaws: Tsim tshwj xeeb rau cov qauv hlau tshwj xeeb, xws li kev tsim kho lub nkoj.
Lub sijhawm tshaj tawm: Lub Kaum Ob Hlis-15-2025
