Ua ntej, muaj ob txoj cai ntawm laser npav tshuab:
1) Ua haujlwm kub
Ib qho teeb meem laser nrog lub siab zog, uas yog lub zog uas muaj zog txaus, ua rau lub ntsej muag ntawm cov khoom ua tiav, absorbs lub zog laser ntawm qhov khoom ntawm cov khoom, thiab ua rau lub thermal excitation txheej txheem hauv cheeb tsam irradiated kom qhov chaw ntawm cov khoom txheej kub nce, ua rau tsis txawv txav, melting, ablation, evaporation thiab hais txog.
2) Txias ua haujlwm
UV photons nrog lub siab ntawm lub zog uas cuam tshuam cov chemical bonds nyob rau hauv cov ntaub ntawv (tshwj xeeb tshaj yog cov khoom organic) los yog hauv xov xwm puag ncig mus rau qhov chaw uas cov khoom siv muaj cov txheej txheem tsis thermal. Hom kev ua haujlwm txias no yog qhov tseem ceeb hauv laser npav vim tias nws tsis thermal ablated, tiam sis tsis ua cov cua sov phom cuam tshuam uas cuam tshuam qhov mob khaub thuas txias ntawm cov tshuaj bonds thiab yog li ntawd tsis sov lub puab txheej thiab thaj chaw ntawm qhov chaw ua machined lossis thermal deformation thiab li ntawd.
Thib ob, hom qee hom ntawm laser npav tshuab
Lub laser marking tshuab raws li cov sib txawv ntawm cov lasers yuav muab faib ua: CO2 laser marking tshuab, semiconductor laser marking tshuab, YAG laser npav tshuab, fiber ntau laser marking tshuab.
Raws li qhov sib txawv ntawm lub laser faib ua: UV laser marking tshuab (pom), ntsuab laser marking tshuab (pom laser), infrared laser npav tshuab (pom laser).
1) YAG Laser Marking Tshuab: Krypton teeb ua qhov energy source (excitation source), ND: YAG raws li lub nruab nrab laser-generated, emit ib lub meej wavelength tuaj yeem txhawb theem khoom tsim hloov mus laser, laser zog amplification Tom qab tsim ntawm laser kev ntawm cov ntaub ntawv ntawm lub beam.
2) CO2 laser marking machine: CO2 roj yog them mus rau hauv lub raj tawm mus ua qhov nruab nrab rau cov ua kom muaj laser. Thaum ib lub siab muaj qhov hloov ntawm lub electrode thiab lub teeb paug tawm yog tsim tawm hauv lub raj tawm, cov roj molecules yuav raug tso tawm thiab laser zog tuaj yeem ua kom nrov tau ntxiv tom qab tsim cov laser ua cov ntaub ntawv ntawm lub nqaj.
3) Lub tshuab cim ntawm lub tshuab YAG ntawm lub tshuab YAG laser: siv lub wavelength ntawm 808nm semiconductor laser diode pumped Nd: YAG nruab nrab, qhov nruab nrab ua ib qho kev coob ntawm cov khoom uas yog inverted hauv Q nkag rau hauv qhov kev txiav txim ntawm qhov kev tsim ntawm lub wavelength ntawm 1064nm giant pulsed laser tso zis, electro-kho qhov muag conversion.
4) Semiconductor kawg twj YAG laser npav cav: ncaj qha los ntawm lub laser siv lead ua kawg ntawm lub twj tso kua mis (808nm) pumped rau hauv cov neeg kho qhov muag lens tsim tawm laser cov zis. Ua kom txoj kab teeb ci hloov dua siab tau zoo heev.
5) Fiber laser marking tshuab: laser tawm ncaj qha los ntawm fiber ntau qhov muag.
