Yintoni ebangela PCB ukusilela?

Izizathu ezintathu zigubungela ukungaphumeleli:

Ingxaki kuyilo PCB

Izizathu zokusingqongileyo

ubudala

Imiba yoyilo ye-PCB ibandakanya iingxaki ezahlukeneyo ezinokuthi zenzeke ngexesha loyilo kunye nenkqubo yokuvelisa, enje:

Ukubekwa kwecandelo-Indawo engachanekanga iyifumana

Indawo encinci ebhodini ibangela ubushushu

Imiba esemgangathweni yezahlulo, njengokusebenzisa isinyithi kunye nezinto zomgunyathi

Ubushushu obugqithisileyo, uthuli, ukufuma kunye nokukhutshwa kombane ngexesha lendibano zezinye zezinto ezisingqongileyo ezinokubangela ukusilela.

Ukuyeka ukusilela okunxulumene nobudala kunzima ngakumbi kwaye kuyehla kulondolozo lothintelo kunokuba kulungiswe. Kodwa ukuba icandelo liyasilela, kubiza iindleko ukubuyisela indawo endala ngento entsha kunokulahla ibhodi yesekethe iphela.

Kufuneka ndenze ntoni xa i-PCB isilele

Ukusilela kwePCB. Kuya kwenzeka. Esona sicwangciso silungileyo kukuthintela ukuphinda ngazo zonke iindleko.

Ukwenza uhlalutyo lwesiphoso se-PCB kunokuchonga ingxaki ngqo kwi-PCB kwaye kuncede ukuthintela ingxaki efanayo ekubandezelekeni kwezinye iibhodi zangoku okanye iibhodi ezizayo. Olu vavanyo lunokwahlulwa lube luvavanyo oluncinci, kubandakanya:

Uhlalutyo lwecandelo leMicroscopic

Uvavanyo lwe-PCB lokuqina

Uvavanyo lokungcola kwePCB

SEM ebonakalayo / microscope

Uviwo lwe-X ray

Uhlalutyo lwesilayidi seMicroscopic

Le ndlela ibandakanya ukususa ibhodi yesekethe ukuveza kunye nokuzahlula izinto kwaye kunceda ekufumaneni iingxaki ezibandakanya:

Iindawo ezineziphene

Iibhulukhwe ezimfutshane okanye ezimfutshane

Ukuhamba kwakhona kwe-welding kukhokelela ekusilelekeni kokuqhubekeka

Ukusilela koomatshini

Imiba ephathekayo

Uvavanyo lweWeldability

Olu vavanyo lusetyenziselwa ukufumana iingxaki ezibangelwa yi-oxidation kunye nokusetyenziswa gwenxa kwefilimu ye-solder. Uvavanyo luphindaphindiwe ukuthengisa okune-solder / kwezinto ukuvavanya ukuthembeka ngokudibeneyo kwe-solder. Iluncedo ku:

Vavanya abathengisi kunye neefluxes

ukubeka

Ulawulo lwemeko

Uvavanyo lokungcola kwePCB

Olu vavanyo lubona ukungcola okunokubangela ukuthotywa, ukubola, isinyithi kunye nezinye iingxaki kunxibelelwano olukhokelayo.

Imicroscope ebonakalayo / SEM

Le ndlela isebenzisa ii-microscopes ezinamandla ukufumana iingxaki ze-welding kunye ne-assembly.

Inkqubo ichanekile kwaye iyakhawuleza. Xa kufuneka ii-microscopes ezinamandla ngakumbi, kunokuskena i-electron microscopy ingasetyenziswa. Inika ukuya kuthi ga kwi-120,000X yokuphakamisa.

Uviwo lwe-X-ray

Itekhnoloji ibonelela ngeendlela ezingezizo zokusebenzisa ifilimu, ixesha lokwenyani okanye iinkqubo zeX-ray ze3D. Inokufumana iziphene ezikhoyo okanye ezinokubakho ezibandakanya amasuntswana angaphakathi, i-voids cover cover, substrate ingqibelelo, njl.

Ungakuphepha njani ukusilela kwePCB

Kuhle ukwenza uhlalutyo lweempazamo ze-PCB kunye nokulungisa iingxaki ze-PCB ukuze zingaphindi zenzeke. Kungangcono ukunqanda ukonakala kwasekuqaleni. Zininzi iindlela zokuphepha ukusilela, kubandakanya:

Ukudibanisa ngokufanayo

Ukutyabeka okungaguquguqukiyo yenye yeendlela eziphambili zokukhusela i-PCB eluthulini, ubumdaka kunye nokufuma. Ezi zambatho zivela kwi-acrylic ukuya kwi-epoxy resins kwaye zinokufakwa ngeendlela ezininzi:

ukuxubha

spray

ukumitha

Ukutyabeka okukhethiweyo

Uvavanyo lokukhutshwa kwangaphambili

Phambi kokuba ihlanganiswe okanye ishiye umenzi, kufuneka kuvavanywe ukuqinisekisa ukuba ayiphumeleli xa iyinxalenye yesixhobo esikhulu. Ukuvavanya ngexesha lendibano kunokuthatha iindlela ezininzi:

Uvavanyo lwe-in-line (ICT) lwenza ibhodi yesekethe isebenze kwisekethe nganye. Sebenzisa kuphela xa kulindelekile uhlaziyo lwemveliso.

Uvavanyo lwephini yokubhabha alunakho ukuyinika amandla ibhodi, kodwa ixabiso lincinci kune-ICT. Kwiiodolo ezinkulu, inokuba yexabiso eliphantsi kune-ICT.

Uvavanyo oluzenzekelayo lokujonga lungathatha umfanekiso we-PCB kwaye uthelekise umfanekiso kunye nomzobo oneenkcukacha, ukumakisha ibhodi yesekethe engahambelani nomzobo weskim.

Uvavanyo lokuguga lubona ukusilela kwangoko kwaye luseke umthwalo wokulayisha.

Uviwo lwe-X-ray olusetyenziselwa uvavanyo lwangaphambi kokukhutshwa luyafana novavanyo lwe-X-ray olusetyenziselwa uvavanyo lokungaphumeleli kovavanyo.

Uvavanyo olusebenzayo luqinisekisa ukuba ibhodi iya kuqala. Olunye uvavanyo olusebenzayo lubandakanya i-domainometometry yexesha, uvavanyo lwe-peel kunye novavanyo lwe-solder float, kunye nokuvavanywa kokuvavanywa kokuchazwa kwangaphambili, uvavanyo lokungcola kwe-PCB kunye nohlalutyo lwe-microsection.

Inkonzo yasemva kokuthengisa (AMS)

Emva kokuba imveliso ishiye umenzi wayo, ayisoloko isiphelo senkonzo yomenzi. Uninzi lwabenzi beekhontrakthi ezisemgangathweni ezinikezela ngenkonzo yokuthengisa emva kokuthengisa ukubeka esweni nokulungisa iimveliso zabo, nkqu nezo bengazivelisanga ekuqaleni. I-AMS inceda kwiindawo ezininzi ezibalulekileyo, kubandakanya:

Ukucoca, ukuvavanya nokuhlola ukuthintela iingozi ezinxulumene nezixhobo kunye nokusilela

Ukusombulula ingxaki kwinqanaba lecandelo kwinkonzo ye-elektroniki kwinqanaba lecandelo

Ukulungiswa ngokutsha, ukulungiswa kunye nokugcinwa kohlaziyo loomatshini abadala, ukwenziwa ngokutsha kwamalungu akhethekileyo, ukubonelela ngeenkonzo zentsimi kunye nokuhlaziya kunye nokuhlaziya isoftware yemveliso

Uhlalutyo lwedatha ukufundisisa imbali yenkonzo okanye iingxelo zohlalutyo lokungaphumeleli ukumisela amanyathelo alandelayo

Ulawulo oluphelelwe lixesha

Ulawulo lokuphelelwa lixesha luyinxalenye ye-AMS kwaye lijongene nokuthintela ukungangqinelani kwecandelo kunye nokusilela okunxulumene nobudala.

Ukuqinisekisa ukuba iimveliso zakho zinomjikelo wobomi obude, iingcali zolawulo eziphelelwe lixesha ziya kuqinisekisa ukuba iindawo ezikumgangatho ophezulu zibonelelwa kwaye kuthotyelwa nemithetho yezimbiwa.

Kwakhona, cinga ngokutshintsha ikhadi lesekethe kwi-PCB rhoqo kwiminyaka eyi-X okanye ubuyise amaxesha ama-X. Inkonzo yakho ye-AMS iya kuba nakho ukuseta ishedyuli yokutshintsha ukuze kuqinisekiswe ukusebenza kakuhle kwe-elektroniki. Kungcono ukubuyisela iinxalenye endaweni yokulinda ukuba ziphume!

Ulufumana njani uvavanyo oluchanekileyo

Ukuba i-PCB yakho iyasilela, ngoku uyazi ukuba wenzeni ngoku kunye nendlela yokuyithintela. Nangona kunjalo, ukuba ufuna ukunciphisa umngcipheko wokungaphumeleli kwe-PCB, sebenza nomenzi wekhompyuter osemgangathweni onamava kuvavanyo kunye ne-AMS.