Vuam neeg hlau laser vuam yog vuam txheej txheem uas siv hluav taws xob (pom lub teeb lossis ultraviolet) ua cov khoom siv cua sov kom yaj thiab txuas workpieces. Lub zog laser tuaj yeem ua tau tsis tsuas yog vim tias lub laser nws tus kheej muaj lub zog siab, tab sis qhov tseem ceeb tshaj, vim tias lub zog laser tau tsom mus rau ib qho kis, uas ua rau nws lub zog ntau dua.
Thaum lub sijhawm laser vuam, lub laser irradiates saum npoo ntawm cov khoom yuav tsum tau welded thiab ua rau nws. Ib feem ntawm nws yog cuam tshuam thiab ib feem yog nqus rau hauv cov khoom siv. Rau cov ntaub ntawv opaque, lub teeb kis tau tus mob yog nqus tau, thiab cov kab hluav taws xob nqus coefficient ntawm cov hlau yog 107 ~ 108 / m. Rau cov khoom siv hlau, lub laser tau nqus rau hauv cov tuab ntawm 0.01 ~ 0.1m rau ntawm cov hlau saum npoo thiab hloov mus rau lub zog cua sov, uas ua rau qhov kub ntawm cov hlau saum npoo sawv, thiab tom qab ntawd kis mus rau sab hauv ntawm cov hlau.
Lub tshuab photon tawg cov hlau saum npoo los ua kom muaj pa, thiab cov hlau evaporated tiv thaiv lub zog ntxiv los ntawm kev cuam tshuam los ntawm cov hlau. Yog hais tias cov hlau txuas nrog muaj cov thermal conductivity zoo, ntau dua kev nkag mus tob yuav tau txais. Txoj kev xav, kev xa thiab nqus ntawm laser lub teeb rau saum npoo ntawm cov khoom siv yog qhov tseem ceeb ntawm kev sib txuam ntawm lub tshuab hluav taws xob ntawm lub teeb ntoj hluav taws xob thiab cov khoom siv. Thaum lub laser lub teeb yoj nkag mus rau cov khoom siv, cov khoom sib tw hauv cov khoom siv lub zog ua kom raws li qhov sib npaug ntawm lub teeb yoj hluav taws xob vector, kom lub zog hluav taws xob ntawm photon ua lub zog kev tig tau hluav taws xob. Tom qab ib yam khoom nqus tau lub teeb laser, nws thawj zaug tsim cov hluav taws xob ntau ntawm qee yam, xws li lub zog lub zog ntawm cov hluav taws xob dawb, lub zog tsis muaj zog ntawm khi hluav taws xob, lossis cov tshaj xov. Cov thawj excitation zog no hloov mus rau hauv lub zog cua sov los ntawm qee qhov txheej txheem.
Ntxiv rau qhov raug hluav taws xob tsis zoo ib yam li lwm lub teeb pom kev, cov lasers kuj tseem muaj cov yam ntxwv uas lwm lub teeb tsis muaj, xws li siab ncaj, qhov siab (duab photon siv), siab monochromaticity thiab siab txheej. Thaum lub sijhawm laser welding, qhov hloov ntawm lub teeb hluav taws xob nqus los ntawm cov khoom siv rau lub zog cua sov ua tiav nyob rau hauv lub sijhawm luv (kwv yees li 10s). Nyob rau lub sijhawm no, lub zog cua sov tsuas yog txwv rau thaj chaw laser hluav taws xob tawg ntawm cov khoom, thiab tom qab ntawd los ntawm kev sib cais cov cua sov, cov cua sov tau hloov los ntawm thaj chaw kub siab mus rau thaj chaw kub tsawg.
Qhov kev nqus ntawm lub teeb laser los ntawm cov hlau yog feem ntau cuam tshuam txog yam tseem ceeb xws li laser wavelength, cov khoom ua kom lub zog, qhov kub thiab txias, qhov teeb meem saum npoo thiab laser zog ceev. Feem ntau hais lus, qhov nqus tus nqi ntawm cov hlau mus rau lub laser nce nrog qhov nce ntawm qhov kub thiab txias, thiab nce nrog qhov nce ntawm kev tawm tsam.