Laser welding yog dab tsi? Laser Vuam piav qhia! Txhua yam koj yuav tsum paub txog Laser Vuam, suav nrog cov ntsiab lus tseem ceeb thiab cov txheej txheem tseem ceeb!
Ntau tus neeg siv khoom tsis nkag siab txog cov ntsiab cai ua haujlwm ntawm laser vuam tshuab, cia ib leeg xaiv lub tshuab laser vuam zoo, txawm li cas los xij Mimowork Laser nyob ntawm no los pab koj txiav txim siab thiab muab kev txhawb nqa ntxiv los pab koj nkag siab laser vuam.
Laser Vuam yog dab tsi?
Laser vuam yog ib hom ntawm melting vuam, siv lub laser beam raws li ib tug vuam tshav kub qhov chaw, welding txoj cai yog los ntawm ib tug tshwj xeeb txoj kev los txhawb lub active nruab nrab, tsim resonant kab noj hniav oscillation, thiab ces hloov mus rau hauv lub stimulated radiation beam, thaum lub beam. thiab cov khoom ua haujlwm sib tiv tauj ib leeg, lub zog yog absorbed los ntawm cov khoom ua haujlwm, thaum kub nce mus txog qhov melting point ntawm cov khoom yuav welded.
Raws li lub hauv paus ntsiab lus ntawm vuam pas dej ua ke, laser welding muaj ob qho yooj yim welding mechanisms: tshav kub conduction vuam thiab sib sib zog nqus nkag (keyhole) vuam. Thaum tshav kub kub generated los ntawm tshav kub conduction welding yog diffused mus rau lub workpiece los ntawm tshav kub hloov lwm lub tsev, yog li ntawd lub weld nto yog melted, tsis muaj vaporization yuav tsum tshwm sim, uas yog feem ntau siv nyob rau hauv lub vuam ntawm tsawg-ceev nyias-ish Cheebtsam. Sib sib zog nqus fusion vuam vaporizes cov khoom thiab tsim ib tug loj npaum li cas ntawm plasma. Vim muaj cua sov siab, yuav muaj qhov nyob rau hauv pem hauv ntej ntawm lub pas dej ua ke. Kev sib sib zog nqus welding yog hom kev siv laser vuam ntau tshaj plaws, nws tuaj yeem vuam cov haujlwm kom huv si, thiab cov khoom siv hluav taws xob yog qhov loj, ua rau vuam ceev ceev.
Txheej txheem Parameter hauv Laser Vuam
Muaj ntau cov txheej txheem tsis zoo uas cuam tshuam rau qhov zoo ntawm laser vuam, xws li lub zog ntom ntom, laser pulse waveform, defocusing, vuam ceev thiab xaiv cov khoom siv tiv thaiv roj.
Laser zog ceev
Lub zog ceev yog ib qho tseem ceeb tshaj plaws hauv kev ua laser. Nrog lub zog hluav taws xob siab dua, txheej saum npoo av tuaj yeem ua kom sov kom npau npau rau lub microsecond, ua rau muaj ntau yam kev vaporization loj. Yog li ntawd, lub zog siab ceev yog qhov zoo rau cov txheej txheem tshem tawm xws li drilling, txiav thiab kos duab. Rau qhov tsawg zog ceev, nws yuav siv sij hawm ob peb milliseconds rau qhov kub thiab txias mus txog rau lub boiling point, thiab ua ntej lub nto vaporizes, lub hauv qab mus txog lub melting point, uas yog ib qho yooj yim los tsim ib tug zoo melting weld. Yog li ntawd, nyob rau hauv daim ntawv ntawm tshav kub conduction laser vuam, lub zog ceev ntau yam yog 104-106W / cm2.
Laser Pulse Waveform
Laser pulse waveform tsis yog tsuas yog ib qho tseem ceeb parameter kom paub qhov txawv ntawm cov khoom tshem tawm ntawm cov khoom melting, tab sis kuj yog ib qho tseem ceeb parameter los txiav txim qhov ntim thiab nqi ntawm cov khoom siv. Thaum lub siab siv laser beam raug tua rau saum npoo ntawm cov khoom, qhov saum npoo ntawm cov khoom yuav muaj 60 ~ 90% ntawm lub zog laser pom thiab txiav txim siab poob, tshwj xeeb tshaj yog kub, nyiaj, tooj liab, txhuas, titanium thiab lwm yam ntaub ntawv uas muaj. muaj zog reflection thiab ceev kub hloov. Lub reflectance ntawm ib tug hlau sib txawv nrog lub sij hawm thaum lub laser mem tes. Thaum qhov kub thiab txias ntawm cov khoom nce mus rau lub melting point, qhov reflectance yuav txo tau sai, thiab thaum lub nto nyob rau hauv lub melting lub xeev, lub reflectance stabilizes ntawm ib tug tej yam nqi.
Laser mem tes dav
Pulse width yog ib qho tseem ceeb parameter ntawm pulsed laser vuam. Qhov dav pulse tau txiav txim siab los ntawm qhov tob ntawm kev nkag mus thiab thaj chaw tshav kub. Qhov ntev ntawm lub mem tes dav yog, qhov loj dua qhov chaw tshav kub cuam tshuam, thiab qhov tob ntawm kev nkag mus tau nce nrog 1/2 lub zog ntawm cov mem tes dav. Txawm li cas los xij, qhov nce ntawm pulse dav yuav txo qis lub zog siab, yog li qhov nce ntawm pulse dav feem ntau yog siv rau cov cua sov conduction welding, uas ua rau qhov dav thiab ntiav weld loj, tshwj xeeb tshaj yog tsim rau lap welding ntawm nyias thiab tuab daim hlau. Txawm li cas los xij, lub zog qis qis ua rau cov khoom siv hluav taws xob ntau dhau, thiab txhua yam khoom muaj qhov pom pom dav dav uas ua kom qhov tob ntawm kev nkag mus.
Defocus kom muaj nuj nqis
Laser welding feem ntau yuav tsum muaj qee yam ntawm defocusing, vim hais tias lub zog ceev ntawm qhov chaw ntawm lub laser tsom siab yog siab dhau, uas yooj yim rau evaporate cov khoom siv vuam rau hauv qhov. Kev faib tawm ntawm lub zog ntom ntom yog sib xws hauv txhua lub dav hlau kom deb ntawm laser tsom.
Muaj ob hom defocus:
Zoo thiab tsis zoo defocus. Yog hais tias lub dav hlau focal nyob saum lub workpiece, nws yog qhov zoo defocus; txwv tsis pub, nws yog qhov tsis zoo defocus. Raws li geometric optics txoj kev xav, thaum qhov kev ncua deb ntawm qhov zoo thiab qhov tsis zoo defocusing dav hlau thiab vuam dav hlau sib npaug, lub zog ceev ntawm cov dav hlau sib txuas yog kwv yees li qub, tab sis qhov tseeb, qhov tau txais lub pas dej ua ke sib txawv. Nyob rau hauv cov ntaub ntawv ntawm qhov tsis zoo defocus, kev nkag mus ntau dua tuaj yeem tau txais, uas cuam tshuam nrog kev tsim cov pas dej molten.
Vuam ceev
Vuam ceev txiav txim siab vuam nto zoo, nkag mus tob, tshav kub cuam tshuam cheeb tsam thiab lwm yam. Qhov vuam ceev yuav cuam tshuam rau cov cua kub nkag hauv ib lub sijhawm. Yog tias qhov vuam ceev qeeb dhau lawm, cov khoom siv hluav taws xob kub siab dhau lawm, ua rau lub tshuab ua haujlwm kub dhau. Yog hais tias qhov vuam ceev ceev heev, cov cua kub input tsawg dhau, uas ua rau lub workpiece vuam ib nrab thiab tsis tiav. Kev txo vuam ceev feem ntau yog siv los txhim kho kev nkag mus.
Auxiliary Blow Protection Gas
Lub tshuab hluav taws xob tiv thaiv hluav taws xob yog cov txheej txheem tseem ceeb hauv lub zog laser vuam. Ntawm ib sab, tiv thaiv cov ntaub ntawv hlau los ntawm sputtering thiab kis kab mob ntawm daim iav tsom; Ntawm qhov tod tes, nws yog los tiv thaiv cov plasma tsim nyob rau hauv cov txheej txheem vuam los ntawm kev tsom ntau dhau thiab tiv thaiv lub laser los ntawm qhov chaw ntawm cov khoom. Nyob rau hauv cov txheej txheem ntawm laser vuam, helium, argon, nitrogen thiab lwm yam gases feem ntau siv los tiv thaiv lub molten pas dej ua ke, thiaj li tiv thaiv lub workpiece los ntawm oxidation nyob rau hauv lub vuam engineering. Cov yam ntxwv xws li hom kev tiv thaiv roj, qhov loj ntawm huab cua ntws thiab lub tshuab lub kaum sab xis muaj qhov cuam tshuam zoo rau cov txiaj ntsig vuam, thiab cov tshuab tshuab sib txawv kuj tseem yuav muaj qee yam cuam tshuam rau qhov vuam zoo.
Peb pom zoo Handheld Laser Welder:
Laser Welder - Ua haujlwm ib puag ncig
◾ Qhov kub ntawm qhov chaw ua haujlwm: 15 ~ 35 ℃
◾ Humidity ntau ntawm kev ua haujlwm ib puag ncig: <70% Tsis muaj condensation
◾ Txias: dej chiller yog qhov tsim nyog vim yog kev ua haujlwm ntawm cov cua sov tshem tawm rau cov khoom siv hluav taws xob laser, kom ntseeg tau tias lub laser vuam ua haujlwm zoo.
(Kev siv nthuav dav thiab qhia txog dej chiller, koj tuaj yeem tshawb xyuas:Freeze-proofing Measures rau CO2 Laser System)
Xav paub ntau ntxiv txog Laser Welders?
Post lub sij hawm: Dec-22-2022