Zomwe zimayambitsa PCB kulephera?

Zifukwa zitatu zimakhudza zolephera zambiri:

PCB kapangidwe vuto

Zifukwa zachilengedwe

m’badwo

Nkhani zopanga ma PCB zimaphatikizapo mavuto osiyanasiyana omwe angachitike pakupanga ndi kupanga, monga:

Kukhazikitsidwa kwamagawo – Amapeza molakwika zigawo zikuluzikulu

Malo ochepa okwera kutentha

Zovuta zamagawo, monga kugwiritsa ntchito chitsulo ndi zinthu zabodza

Kutentha kwambiri, fumbi, chinyezi komanso kutulutsa kwamagetsi pamsonkhano ndi zina mwazinthu zachilengedwe zomwe zingayambitse kulephera.

Kuyimitsa zolephera zakubadwa kumakhala kovuta kwambiri ndipo kumabwera pokonza zodzitetezera m’malo mokonzanso. Koma ngati gawo lina lalephera, zimakhala zotsika mtengo kusinthira gawo lakale ndi latsopano m’malo moponya komiti yonse yadera.

Ndiyenera kuchita chiyani PCB ikalephera

Kulephera kwa PCB. Zidzachitika. Njira yabwino kwambiri ndikupewa kubwereza zivute zitani.

Kuchita kusanthula kolakwika kwa PCB kumatha kuzindikira vuto lenileni la PCB ndikuthandizira kupewa vuto lomwelo kuti lisawononge matabwa ena apano kapena matabwa amtsogolo. Mayeserowa atha kuyesedwa kochepa, kuphatikizapo:

Kusanthula kwama Microscopic

Mayeso a PCB weldability

Kuyesedwa kwa PCB

Kuwala / microscope SEM

Kuyeza kwa X ray

Kusanthula kagawo kakang’ono kwambiri

Njirayi imaphatikizapo kuchotsa bolodi loyang’anira kuti awulule ndikupatula zigawo zina ndikuthandizira kuzindikira mavuto okhudzana ndi:

Mbali zopunduka

Kabudula kapena kabudula

Reflow kuwotcherera kumabweretsa kulephera processing

Matenthedwe makina kulephera

Nkhani zopangira

Kuyesa kwa Weldability

Kuyesaku kumagwiritsidwa ntchito kupeza mavuto omwe amayamba chifukwa cha makutidwe ndi okosijeni komanso kugwiritsa ntchito molakwika kanema wa solder. Chiyesocho chimafotokozeranso kulumikizana kwa solder / zakuthupi kuti muwone kudalirika kwa mgwirizano wa solder. Ndiwothandiza pa:

Unikani ma solders ndi ma fluxes

benchmarking

Kuletsa khalidwe

Kuyesedwa kwa PCB

Kuyesaku kumazindikira zoyipitsa zomwe zingayambitse kuwonongeka, dzimbiri, metallization ndi mavuto ena pakalumikizana kotsogola.

Ma microscope / SEM

Njirayi imagwiritsa ntchito maikulosikopu yamphamvu kuti izindikire mavuto a kuwotcherera komanso kusonkhana.

Njirayi ndi yolondola komanso yachangu. Pamafunika ma microscope amphamvu kwambiri, kugwiritsa ntchito ma microscopy a elekitironi atha kugwiritsidwa ntchito. Amapereka kukula kwa 120,000X.

Kuyeza X-ray

Tekinolojeyi imapereka njira zosagwiritsa ntchito makanema, nthawi yeniyeni kapena ma X-ray a 3D. Itha kupeza zolakwika zapano kapena zomwe zingakhudze tinthu tating’onoting’ono, zokutira zosindikiza, gawo lokhulupirika, ndi zina zambiri.

Kodi kupewa PCB kulephera

Ndizosangalatsa kusanthula zolakwika za PCB ndikukonzekera mavuto a PCB kuti zisadzachitikenso. Kungakhale bwino kupewa kuwonongeka koyambirira. Pali njira zingapo zopewera kulephera, kuphatikiza:

Coating kuyanika kosakanikirana

Kuphimba mwanjira imodzi ndi imodzi mwanjira zazikulu zotetezera PCB ku fumbi, dothi ndi chinyezi. Zokutira Izi zimayambira pa akiliriki mpaka ma epoxy resins ndipo amatha kuzikuta m’njira zingapo:

brush

utsi

kupatsidwa mimba

Kusankha koyika

Kutulutsa koyambirira

Asanasonkhanitsidwe kapena kusiya wopanga, iyenera kuyesedwa kuti iwonongeke ikakhala gawo la chida chokulirapo. Kuyesedwa pamsonkhano kumatha kukhala m’njira zosiyanasiyana:

Kuyesa kwamizere (ICT) kumathandizira oyang’anira dera kuti atsegule dera lililonse. Gwiritsani ntchito pokhapokha ngati zoyembekezera zazing’ono zikuyembekezeredwa.

Kuyesa kwa pini yowuluka sikungathe kuyendetsa gulu, koma ndiotsika mtengo kuposa ICT. Pakulamula kokulirapo, zitha kukhala zotsika mtengo kuposa ICT.

Kuwunika kwamakina komweko kumatha kujambula chithunzi cha PCB ndikufanizira chithunzicho ndi chithunzithunzi chatsatanetsatane, chodetsa bolodi loyendera lomwe silikugwirizana ndi chithunzichi.

Kuyesa kukalamba kumazindikira zolephera koyambirira ndikukhazikitsa mphamvu zolemera.

Kuyeza kwa X-ray komwe kumagwiritsidwa ntchito poyesa kusanachitike ndikofanana ndi mayeso a X-ray omwe amagwiritsidwa ntchito poyesa kusanthula.

Mayeso ogwira ntchito amatsimikizira kuti komiti iyamba. Mayeso ena ogwira ntchito amaphatikizira nthawi yoyeseza yoyeserera, mayeso a peel ndi mayeso a solder, komanso kuyesa kwa solderability komwe kwatchulidwa kale, kuyesa kwa kuipitsidwa kwa PCB ndikuwunika kwa microsection.

Ntchito Yogulitsa Pambuyo (AMS)

Chogulitsacho chikachoka kwa wopanga, sikumakhala kumapeto kwa ntchito za wopanga nthawi zonse. Ambiri opanga mgwirizano wamagetsi amapereka ntchito zogulitsa pambuyo poyang’anira ndi kukonza zinthu zawo, ngakhale zomwe sanapange koyambirira. AMS imathandizira m’malo angapo ofunikira, kuphatikiza:

Kuyeretsa, yesani ndi kuyendera kuti mupewe ngozi zokhudzana ndi zida ndi zolephera

Zovuta zamagulu azigawo zamagetsi zamagetsi pazomwe zimapangidwira

Kukonzanso, kukonzanso ndikukonzanso makina akale, kukonzanso magawo apadera, kupereka ntchito zakumunda ndikusintha ndikukonzanso mapulogalamu azinthu

Kusanthula deta kuti muwerenge mbiri ya ntchito kapena malipoti owunika za kulephera kuti mudziwe njira zotsatirazi

Kusamalira chakale

Kuwongolera kutha kwa nthawi ndi gawo la AMS ndipo imakhudzidwa ndikupewa kusagwirizana pazinthu zina ndi zolephera zokhudzana ndi zaka.

Kuonetsetsa kuti malonda anu amakhala ndi moyo wautali kwambiri, akatswiri oyang’anira zachikale adzaonetsetsa kuti mbali zapamwamba kwambiri zimaperekedwa ndipo malamulo osokonekera amchere amatsatiridwa.

Komanso, lingalirani kusinthitsa khadi yadera mu PCB zaka X zilizonse kapena kubwerezanso nthawi X. Ntchito yanu ya AMS izitha kukhazikitsa ndandanda yosinthira kuti zitsimikizire kuti zamagetsi zikuyenda bwino. Ndibwino kuti mutenge mbali zina kuposa kudikira kuti ziswe!

Kodi mungapeze bwanji mayeso oyenera

Ngati PCB yanu yalephera, tsopano mukudziwa zoyenera kuchita komanso momwe mungapewere izi. Komabe, ngati mukufuna kuchepetsa chiopsezo cha kulephera kwa PCB, gwirani ntchito ndi wopanga zamagetsi wabwino yemwe ali ndi chidziwitso pakuyesa ndi AMS.