Laser npav tshuab yog ib qho ntawm cov ntawv thov loj tshaj plaws ntawm kev ua laser. Laser npav yog ib txoj kev kos npe uas siv lub zog siab ceev laser rau hauv zos irradiate lub workpiece kom vaporize cov ntaub ntawv saum npoo los yog ua rau cov tshuaj tiv thaiv hloov xim, yog li tawm hauv lub cim mus tas li. Laser npav tuaj yeem tsim ntau yam cim, cov cim thiab cov qauv, thiab lwm yam, thiab qhov loj ntawm cov cim tuaj yeem nyob ntawm millimeters mus rau micrometers, uas yog qhov tseem ceeb tshwj xeeb rau kev tiv thaiv cov khoom cuav.

Txoj cai ntawm laser coding

Lub hauv paus ntsiab lus ntawm laser npav yog tias lub siab-zog nruam laser beam yog tsim los ntawm lub tshuab hluav taws xob laser, thiab lub laser tsom rau ntawm cov ntaub ntawv luam ntawv kom yaj tam sim ntawd lossis txawm tias vaporize cov khoom nto. Los ntawm kev tswj txoj kev ntawm lub laser rau ntawm qhov chaw ntawm cov khoom, nws tsim Cov duab kos duab uas yuav tsum tau ua.

Feature ib

Kev ua haujlwm tsis sib cuag, tuaj yeem raug cim rau ntawm ib qho tshwj xeeb-zoo li tus nto, lub workpiece yuav tsis deform thiab ua kom muaj kev ntxhov siab sab hauv, haum rau kos cov hlau, yas, iav, ceramic, ntoo, tawv thiab lwm yam ntaub ntawv.

Feature ob

Yuav luag txhua qhov chaw (xws li pistons, piston rings, li qub, lub rooj zaum valve, cov cuab yeej kho vajtse, cov khoom siv huv huv, cov khoom siv hluav taws xob, thiab lwm yam) tuaj yeem raug cim, thiab cov cim yog hnav-tiv taus, cov txheej txheem tsim khoom yog yooj yim kom paub txog automation, thiab cov cim cim muaj me ntsis deformation.

Feature peb

Cov txheej txheem scanning yog siv rau kev kos, uas yog, lub laser beam yog tshwm sim ntawm ob daim iav, thiab lub computer-tswj scanning lub cev muaj zog tsav lub iav kom tig raws X thiab Y axes feem. Tom qab lub laser beam tsom, nws ntog rau ntawm lub cim workpiece, yog li tsim ib tug laser npav. taug qab.

Qhov zoo ntawm laser coding

01

Lub laser nyias nyias tom qab laser tsom yog zoo li lub cuab yeej, uas tuaj yeem tshem tawm cov khoom nto ntawm cov khoom taw tes los ntawm taw tes. Nws cov xwm txheej siab heev yog tias cov txheej txheem kev kos npe tsis yog kev sib cuag, uas tsis tsim cov tshuab extrusion lossis cov neeg kho tshuab kev ntxhov siab, yog li nws yuav tsis ua rau cov ntawv ua tiav; Vim qhov me me ntawm lub laser tom qab tsom, qhov chaw me me ntawm qhov kub thiab txias, thiab kev ua haujlwm zoo, qee cov txheej txheem uas tsis tuaj yeem ua tiav los ntawm cov qauv txheej txheem tuaj yeem ua tiav.

02

Lub "tawv" siv nyob rau hauv laser ua yog lub tsom teeb pom kev zoo. Tsis xav tau cov cuab yeej thiab cov khoom siv ntxiv. Ntev npaum li lub laser tuaj yeem ua haujlwm ib txwm, nws tuaj yeem ua tiav tsis tu ncua ntev. Lub laser processing ceev yog ceev thiab tus nqi qis. Laser ua yog tswj tau los ntawm lub computer, thiab tsis muaj kev cuam tshuam tib neeg yuav tsum tau ua thaum tsim khoom.

03

Cov ntaub ntawv zoo li cas lub laser tuaj yeem cim tau tsuas yog cuam tshuam nrog cov ntsiab lus tsim hauv lub computer. Tsuav yog cov kos duab kos duab kos duab tsim hauv lub computer tuaj yeem paub txog nws, lub tshuab kos npe tuaj yeem kho cov ntaub ntawv tsim nyog ntawm tus neeg nqa khoom tsim nyog. Yog li ntawd, kev ua haujlwm ntawm lub software yeej txiav txim siab ua haujlwm ntawm qhov system mus rau qhov loj.

Nyob rau hauv daim ntawv thov laser ntawm SMT teb, lub laser marking traceability yog tsuas yog ua nyob rau hauv lub PCB, thiab lub destructiveness ntawm lub laser ntawm txawv wavelengths rau lub PCB tin masking txheej yog inconsistent.

Tam sim no, cov lasers siv hauv laser coding muaj xws li fiber ntau lasers, ultraviolet lasers, ntsuab lasers thiab CO2 lasers. Feem ntau siv lasers hauv kev lag luam yog UV lasers thiab CO2 lasers. Fiber lasers thiab ntsuab lasers yog siv tsawg dua.

fiber ntau laser

Fiber pulse laser hais txog ib hom laser uas tsim los ntawm kev siv iav fiber ntau doped nrog lub ntiaj teb tsis tshua muaj cov ntsiab lus (xws li ytterbium) raws li qhov nruab nrab nce. Nws muaj ib tug nplua nuj luminous zog theem. Lub wavelength ntawm pulsed fiber ntau laser yog 1064nm (zoo ib yam li YAG, tab sis qhov txawv yog YAG cov khoom ua haujlwm yog neodymium) (QCW, txuas fiber ntau laser muaj ib tug raug wavelength ntawm 1060-1080nm, txawm tias QCW kuj yog ib tug mem tes laser, tab sis nws cov mem tes. tiam mechanism yog txawv kiag li, thiab lub wavelength kuj txawv), nws yog ib tug ze-infrared laser. Nws tuaj yeem siv los cim cov khoom siv hlau thiab cov khoom tsis yog hlau vim tias qhov nqus tau siab.

Cov txheej txheem ua tiav los ntawm kev siv cov nyhuv thermal ntawm laser ntawm cov khoom, los yog los ntawm cua sov thiab vaporizing cov khoom nto kom nthuav tawm cov khaubncaws sab nraud povtseg ntawm cov xim sib txawv, lossis los ntawm kev ua kom sov lub microscopic lub cev hloov ntawm cov khoom siv (xws li qee cov nanometers, kaum nanometers) Qib micro-qhov yuav ua rau lub cev muaj zog dub, thiab lub teeb tuaj yeem cuam tshuam me ntsis, ua rau cov khoom tshwm tsaus nti) thiab nws qhov kev ua tau zoo yuav hloov pauv ntau, lossis los ntawm qee cov tshuaj tiv thaiv uas tshwm sim thaum rhuab los ntawm lub teeb lub zog. , nws yuav qhia cov ntaub ntawv xav tau xws li cov duab, cov cim, thiab QR cov lej.

UV laser

Ultraviolet laser yog ib tug luv- wavelength laser. Feem ntau, kev siv tshuab ua ob npaug yog siv los hloov lub teeb infrared (1064nm) tawm los ntawm cov khoom siv lub xeev laser rau hauv 355nm (triple zaus) thiab 266nm (quadruple zaus) ultraviolet lub teeb. Nws lub zog photon loj heev, uas tuaj yeem phim cov qib zog ntawm qee cov khoom siv tshuaj (ionic bonds, covalent bonds, hlau bonds) ntawm yuav luag tag nrho cov khoom nyob rau hauv qhov xwm txheej, thiab ncaj qha tawg cov tshuaj bonds, ua rau cov khoom mus rau photochemical cov tshuaj tiv thaiv yam tsis pom tseeb. Cov teebmeem thermal (nucleus, Qee lub zog ntawm cov hluav taws xob sab hauv tuaj yeem nqus tau ultraviolet photons, thiab tom qab ntawd hloov lub zog los ntawm txoj hlua khi, ua rau cov nyhuv thermal, tab sis nws tsis pom tseeb), uas yog "kev ua haujlwm txias". Vim tias tsis muaj qhov pom tseeb thermal nyhuv, UV laser tsis tuaj yeem siv rau vuam, feem ntau siv rau kev kos thiab txiav txiav.

Cov txheej txheem UV cim tau pom los ntawm kev siv cov tshuaj tiv thaiv photochemical ntawm UV lub teeb thiab cov khoom ua rau cov xim hloov. Siv cov kev ntsuas tsim nyog tuaj yeem zam qhov kev tshem tawm pom tseeb ntawm qhov chaw ntawm cov khoom, thiab yog li tuaj yeem kos cov duab thiab cov cim yam tsis muaj qhov pom tseeb.

Txawm hais tias UV lasers tuaj yeem khij ob qho tib si hlau thiab tsis yog hlau, vim yog cov nqi qis, fiber ntau lasers feem ntau yog siv los kos cov ntaub ntawv hlau, thaum UV lasers siv los kos cov khoom uas yuav tsum tau muaj qhov zoo ntawm qhov chaw thiab nyuaj rau kev ua tiav nrog CO2. high-low match nrog CO2.

Ntsuab Laser

Ntsuab laser kuj yog ib tug luv- wavelength laser. Feem ntau, kev siv tshuab ua ob npaug yog siv los hloov lub teeb infrared (1064nm) tawm los ntawm cov khoom laser rau hauv lub teeb ntsuab ntawm 532nm (ob zaus). Lub laser ntsuab yog pom lub teeb thiab ultraviolet laser yog pom tsis pom. . Ntsuab laser muaj lub zog photon loj, thiab nws cov yam ntxwv ua haujlwm txias zoo ib yam li lub teeb ultraviolet, thiab nws tuaj yeem tsim ntau yam kev xaiv nrog ultraviolet laser.

Cov txheej txheem ntawm lub teeb ntsuab yog tib yam li ultraviolet laser, uas siv cov tshuaj tiv thaiv photochemical ntawm lub teeb ntsuab thiab cov khoom ua rau cov xim hloov. Kev siv cov kev ntsuas tsim nyog tuaj yeem zam qhov kev tshem tawm pom tseeb ntawm cov khoom siv saum npoo, yog li nws tuaj yeem kos tus qauv yam tsis muaj qhov pom tseeb kov. Raws li nrog cov cim, feem ntau muaj tin masking txheej nyob rau saum npoo ntawm PCB, uas feem ntau muaj ntau xim. Lub laser ntsuab muaj cov lus teb zoo rau nws, thiab cov cim kos duab yog qhov tseeb thiab muag heev.

CO2 laser tshuab

CO2 yog ib qho kev siv roj laser uas muaj ntau lub zog luminous. Lub laser wavelength ib txwm yog 9.3 thiab 10.6um. Nws yog ib tug deb-infrared laser nrog ib tug tas mus li tso zis zog mus txog rau kaum ntawm kilowatts. Feem ntau lub zog qis CO2 laser yog siv los ua kom tiav cov txheej txheem Marking siab rau cov molecules thiab lwm yam khoom tsis yog xim hlau. Feem ntau, CO2 lasers tsis tshua muaj siv los kos cov hlau, vim tias qhov nqus ntawm cov hlau tsis tshua muaj zog (high-power CO2 tuaj yeem siv los txiav thiab vuam hlau. Vim yog qhov nqus ntawm qhov nqus, electro-optical conversion rate, kho qhov muag thiab tu. thiab lwm yam, nws tau maj mam siv los ntawm fiber ntau lasers hloov).

Cov txheej txheem CO2 yog pom tau los ntawm kev siv cov thermal nyhuv ntawm laser ntawm cov khoom, los yog los ntawm cua sov thiab vaporizing cov ntaub ntawv saum npoo kom nthuav tawm cov khaubncaws sab nraud povtseg ntawm cov ntaub ntawv sib txawv xim, los yog los ntawm lub teeb lub zog cua sov lub microscopic lub cev hloov nyob rau saum npoo ntawm cov khoom. ua kom muaj kev cuam tshuam Cov kev hloov pauv tseem ceeb tshwm sim, lossis qee yam tshuaj tiv thaiv uas tshwm sim thaum cua sov los ntawm lub teeb lub zog, thiab cov duab xav tau, cov cim, cov lej ob sab thiab lwm yam ntaub ntawv raug tso tawm.

CO2 lasers feem ntau yog siv rau hauv cov khoom siv hluav taws xob, kev ntsuas, khaub ncaws, tawv, hnab, khau, khawm, tsom iav, tshuaj, khoom noj, dej haus, tshuaj pleev ib ce, ntim khoom, khoom siv hluav taws xob thiab lwm yam kev lag luam uas siv cov ntaub ntawv polymer.

Laser coding ntawm cov ntaub ntawv PCB

Summary of destructive analysis

Fiber lasers thiab CO2 lasers ob leeg siv cov thermal nyhuv ntawm lub laser ntawm cov khoom kom ua tiav cov cim cov nyhuv, yeej rhuav tshem cov nto ntawm cov khoom los ua ib tug rejection nyhuv, leaking tom qab xim, thiab tsim chromatic aberration; thaum lub ultraviolet laser thiab ntsuab laser siv lub laser rau Cov tshuaj lom neeg cov tshuaj tiv thaiv ntawm cov khoom ua rau cov xim ntawm cov khoom hloov, thiab ces tsis tsim lub rejection nyhuv, tsim graphics thiab cim tsis pom tseeb kov.