PCB yog cov ntawv luv ntawm Printed Circuit Board (Printed Circuit Board). Nws yog ib qho ntawm cov tseem ceeb ntawm kev lag luam hluav taws xob. Nws yog siv hauv yuav luag txhua yam khoom siv hluav taws xob. Nws lub luag haujlwm tseem ceeb yog kom paub qhov hluav taws xob kev sib txuas ntawm ntau yam. Lub PCB yog tsim los ntawm insulating hauv qab phaj, txuas cov xov hlau thiab ntaub rau kev sib sau thiab soldering cov khoom siv hluav taws xob, thiab muaj ob txoj haujlwm ntawm kev ua haujlwm ntawm kab hluav taws xob thiab cov kab hauv qab insulating. Nws txoj kev tsim khoom zoo tuaj yeem cuam tshuam ncaj qha rau cov khoom siv hluav taws xob. Nws yog qhov kev lag luam theem pib niaj hnub no' s khoom siv hluav taws xob cov khoom lag luam, thiab nws tseem yog kev lag luam nrog cov txiaj ntsig ntau tshaj plaws hauv kev lag luam hluav taws xob thoob ntiaj teb.
Cov ntawv thov kev lag luam hauv PCB muaj dav heev, suav nrog cov khoom siv hluav taws xob, tsheb tsim hluav taws xob, kev sib txuas lus, kev kho mob, tub rog, aerospace, thiab lwm yam. Tau ntev, cov txiaj ntsig ntawm PCB cov txiaj ntsig hauv ntiaj teb tau tsuas yog nyob hauv North America, Europe, Nyiv thiab lwm thaj chaw. Tom qab xyoo 2000, nruab nrab ntawm kev lag luam PCB pib hloov mus rau Asia, tshwj xeeb yog cov khw hauv Suav. Hauv xyoo 2009, cov txiaj ntsig kev tsim tawm ntawm Tuam Tshoj' s PCB kev lag luam tau suav txog 1/3 ntawm lub ntiaj teb' s tag nrho, thiab txog xyoo 2017 nws tau nce mus txog 50.5%, suav txog ib nrab ntawm lub ntiaj teb PCB cov txiaj ntsig tus nqi.
Hauv daim ntawv thov PCB ntawm cov neeg siv khoom siv hluav taws xob, FPC muaj qhov nrawm nrawm dua, thiab nws txoj kev sib koom ua lag luam hauv PCB tau nce ntxiv. FPC yog cov ntawv luv ntawm Flexible Printed Circuit (Flexible Printed Circuit). Nws yog ua los ntawm polyimide (PI, tseem hu ua PI npog zaj duab xis hauv kev lag luam) los yog polyester zaj duab xis ua cov khoom txaij nrog kev cia siab rau. Nws yog qhov zoo heev hloov tau yooj yim luam tawm hauv lub rooj tsavxwm nrog lub siab hloov hluav taws xob, lub teeb ceeb thawj, nyias cov tuab thiab cov cuab yeej zoo khoov. Raws li qhov tam sim no ntawm cov ntse, lub teeb thiab nyias cov khoom siv hluav taws xob txawb, FPC yog siv dav vim nws qhov zoo ntawm qhov siab ntawm lub teeb yuag, lub teeb yuag, nyias tuab, khoov tsis kam, ua qauv yooj yim, thiab qhov kub tsis kam, thiab tau dhau los ua qhov kev xav tau tam sim no rau miniaturization thiab kev txav ntawm cov khoom siv hluav taws xob. Tib qho kev daws teeb meem.
Kev lag luam PCB ceev ceev tau fostered muaj cov lag luam loj loj los ntawm kev lag luam. Nrog txoj kev loj hlob ntawm cov thev naus laus zis laser, kev ua cov laser tau maj mam hloov cov txheej txheem vuam tsoos ib txwm muaj thiab tau dhau los ua ib qho tseem ceeb ntawm txheej txheem kev lag luam PCB. Yog li, hauv qab ntawm tag nrho cov kev lag luam qeeb hauv laser ua lag luam, cov lag luam muaj feem xyuam rau PCB tseem tuaj yeem tswj tau qhov kev loj hlob siab.
Cov txiaj ntsig zoo ntawm laser soldering hauv PCB thiab FPC ua
Daim ntawv thov ntawm laser ntawm PCB feem ntau suav nrog vuam, txiav, drilling, kos, thiab lwm yam, tshwj xeeb tshaj yog welding. Ntawm lawv, cov txheej txheem laser soldering piv nrog cov txheej txheem vuam tsoos. Lub laser soldering yog txheej txheem tsis hu rau vuam. Txog rau cov khoom siv hluav taws xob me me thiab cov khoom siv hluav taws xob ntau, cov txheej txheem vuam ib txwm siv tsis tau, uas tau ua kom muaj kev txhim kho nrawm nrawm hauv thev naus laus zis. Kev ua ntawm ultra-nplua seem uas tsis haum rau kev siv vuam viav vias yog thaum kawg ua tiav los ntawm laser soldering.
Qhov ua tau zoo ntawm Zichen laser soldering tshuab:
1. Nws muaj ntau hom ntawm kev siv. Nws tuaj yeem txuas qee lwm txheej PCB uas txuas tau yooj yim lossis tawg thaum vuam, yam tsis muaj kev sib cuag, thiab yuav tsis ua rau muaj kev kub ntxhov rau cov tshuab ua rau vuam khoom;
2. Nws tuaj yeem tiv thaiv qhov ntu nqaim uas lub taub hau hlau tsis tuaj yeem nkag rau hauv Circuit Court tuab ntawm PCB thiab FPC thiab hloov lub kaum sab xis thaum tsis muaj qhov sib nrug nruab nrab ntawm cov sib xyaw hauv qhov sib dhos ntom ntom, tsis muaj cua sov rau tag nrho PCB Circuit Board;
3. Thaum lub sijhawm vuam, tsuas yog thaj chaw welded yog qhov chaw hauv zos, thiab lwm qhov chaw tsis muaj xaim hluav taws xob yuav tsis raug rau cov teebmeem thermal;
4. Lub sijhawm vuam vuam yog luv, qhov ua tau zoo yog qhov siab, thiab cov pob qij txha pob qij txhawm yuav tsis tsim cov tuab tuab intermetallic txheej, yog li qhov zoo yog ntseeg tau;
5. Lub txij nkawm yog siab heev. Cov tsoos hluav taws xob soldering hlau yuav tsum tau hloov tsis tu ncua ntawm lub taub hau soldering hlau, thaum lub tshuab laser soldering yuav tsum muaj qee qhov chaw, yog li tus nqi txij nkawm tuaj yeem txo.
