Qhov tob tob welding ntawm laser vuam tshuab feem ntau yog siv fiber ntau optic nruam laser beams kom tiav cov kev sib txuas ntawm cov ntaub ntawv. Cov txheej txheem metallurgical lub cev yog zoo ib yam li electron beam vuam, uas txhais tau hais tias lub zog hloov dua siab tshiab mechanism ua tiav los ntawm "keyhole" qauv.
Thaum irradiated nrog ib tug txaus lub hwj chim ceev ceev laser, cov khoom evaporates thiab tsim cov qhov me me. Qhov no lub qhov ntim nrog chav yog zoo li lub cev dub, absorbing yuav luag tag nrho cov zog ntawm qhov teeb meem beam. Qhov sib npaug ntawm qhov sib npaug ntawm cov kab noj hniav mus txog kwv yees li 2500 ° C. Thaum tshav kub kub yog hloov los ntawm cov phab ntsa sab nrauv ntawm lub siab kub chamber kom yaj cov hlau nyob ib ncig ntawm lub chamber. Lub qhov me me yog ntim nrog qhov kub-kub, uas yog tsim los ntawm kev nruam evaporation ntawm cov khoom siv phab ntsa nyob rau hauv lub irradiation ntawm ib tug ray beam. Plaub phab ntsa ntawm lub qhov me me yog ib puag ncig los ntawm cov hlau molten, thaum cov hlau ua kua yog ib puag ncig los ntawm cov khoom siv. Nyob rau hauv feem ntau cov pa vuam txheej txheem thiab laser conduction vuam, lub zog yog thawj zaug tso rau ntawm qhov chaw ntawm lub workpiece thiab ces kis mus rau saum npoo. Cov kua dej ntws tawm sab nraud ntawm lub qhov phab ntsa thiab qhov nro ntawm phab ntsa txheej tswj kom muaj qhov sib npaug nrog lub zog siab tsis tu ncua hauv cov kab noj hniav. Lub nqaj txuas ntxiv nkag mus rau hauv lub qhov me me, thiab cov khoom siv sab nraum lub qhov ntws tsis tu ncua. Raws li lub teeb ntawm lub teeb txav mus, lub qhov me me tseem nyob hauv lub xeev ntws ruaj khov. Hauv lwm lo lus, lub qhov me me thiab cov hlau molten nyob ib puag ncig ntawm lub qhov phab ntsa txav mus rau pem hauv ntej ntawm txoj kab kev taw qhia, thiab cov hlau molten puv qhov sib txawv ntawm lub qhov me me thiab condenses, ua ib qho weld seam. Tag nrho cov txheej txheem saum toj no tshwm sim sai heev, kom qhov vuam ceev tuaj yeem ncav cuag ob peb meters ib feeb.
Cov txheej txheem tseem ceeb ntawm laser tob tob welding
1.Beam tsom.
Qhov luaj li cas ntawm qhov chaw nqaj hlau yog ib qho tseem ceeb tshaj plaws nyob rau hauv lub laser vuam, raws li nws txiav txim siab lub zog ceev. Txawm li cas los xij, rau cov lasers siab zog, txawm tias muaj ntau yam kev ntsuas tsis ncaj, lawv qhov kev ntsuas tseem yog qhov nyuaj.
Qhov siab tshaj plaws qhov chaw loj rau nqaj tsom thiab diffraction tuaj yeem xam raws li txoj kev xav ntawm lub teeb diffraction, tab sis vim qhov aberration ntawm lub teeb tsom teeb, qhov tseeb qhov chaw loj yog ntau dua li tus nqi suav. Txoj kev ntsuas qhov yooj yim tshaj plaws yog txoj kev isothermal contour, uas siv cov ntawv tuab los hlawv thiab nkag mus rau polypropylene phaj los ntsuas qhov focal point thiab perforation txoj kab uas hla. Txoj kev no yuav tsum tau xyaum los ntawm kev ntsuas los tuav lub zog laser thiab beam ua lub sijhawm.
2. Laser zog.
Nyob rau hauv lub laser welding muaj lub zog ceev ceev. Hauv qab no tus nqi, qhov tob tob tob tob heev. Thaum tus nqi no tau mus txog lossis dhau lawm, qhov kev nkag mus tob yuav nce ntxiv. Plasma tsuas yog tsim thaum lub zog laser qhov ntom ntom ntawm lub workpiece tshaj qhov pib, cim qhov kev nce qib ntawm kev ruaj khov sib sib zog nqus nqus vuam. Yog tias lub zog laser qis dua qhov pib no, tsuas yog ntog ntawm lub workpiece tshwm sim, piv txwv li vuam yog nqa tawm nrog hom thermal conductivity. Thaum lub laser fais fab tuag mus txog qhov teeb meem tseem ceeb rau kev tsim cov qhov me me, qhov sib sib zog nqus nqus vuam thiab kev siv vuam yuav hloov ua cov txheej txheem vuam tsis ruaj khov, ua rau muaj kev hloov pauv loj hauv qhov tob tob. Nyob rau hauv laser sib sib zog nqus nqus welding, lub laser hwj chim tswj ob qhov tob tob thiab vuam ceev. Lub vuam nkag qhov tob yog ncaj qha cuam tshuam rau lub nqaj fais fab ceev thiab yog ib qho kev ua haujlwm ntawm qhov teeb meem beam zog thiab beam tsom. Feem ntau hais lus, rau cov kab teeb laser nrog ib txoj kab uas hla, qhov nkag mus tob ntxiv nrog qhov nce ntawm lub zog ntawm lub teeb.
Yog tias koj xav paub ntau ntxiv txog laser vuam tshuab, koj tuaj yeem ua raws li peb. Peb yuav hloov kho cov ntaub ntawv ntsig txog hlau laser vuam tshuab ib ntus.
