Uyini umphumela wombala wokumelana ne-solder ku-PCB?

Ibhodi le-PCB alilona elinemibala eminingi, liwusizo kakhulu.

Empeleni, umbala we-PCB board surface umbala we-solder mask.Okokuqala, ukumelana ne-solder kungavimbela ukuhlanganisa okungalungile kwezingxenye.Okwesibili, ingabambezela impilo yesevisi yamadivayisi, ukuze kuvinjwe i-oxidation nokugqwala kwesifunda.

Uma wazi okwengeziwe ngebhodi le-PCB le-HUAWEI, i-Ericsson nezinye izinkampani ezinkulu, uzothola ukuthi umbala ngokuvamile uluhlaza.Ngoba ubuchwepheshe bombala oluhlaza bebhodi le-PCB buvuthwe kakhulu futhi bulula.

Ngaphandle kohlaza, kunemibala eminingi ye-PCB, njenge: emhlophe, ephuzi, ebomvu, eluhlaza okwesibhakabhaka, ekhanyayo, ngisho nechrysanthemum, onsomi, emnyama, eluhlaza okotshani, njll. Okumhlophe kuyi-pigment edingekayo yokukhiqiza izibani kanye izibani.Ukusetshenziswa kweminye imibala ikakhulukazi kungokwenhloso yokulebula imikhiqizo.Imikhiqizo yenkampani eyenza imikhiqizo ye-PCB isuka ku-R&D iye ekuvuthweni kwesiteji sonke, ngokusho kokusetshenziswa okuhlukene kwebhodi le-PCB, ibhodi lokuhlola lingasebenzisa okunsomi, ibhodi lokhiye lizosebenzisa okubomvu, ibhodi langaphakathi lekhompyutha lizosebenzisa okumnyama, konke okumele hlukanisa futhi umake ngombala.

I-PCB evame kakhulu ibhodi eliluhlaza, elaziwa nangokuthi uwoyela oluhlaza, futhi uyinki wawo wokumelana ne-solder unomlando omude kakhulu, oshibhile futhi othandwa kakhulu.Amafutha aluhlaza anezinzuzo eziningi ngaphandle kobuchwepheshe obuvuthiwe:

Ekucutshungulweni kwe-PCB, ukukhiqizwa kwemikhiqizo ye-elekthronikhi kuhlanganisa ukwakhiwa kwamapuleti kanye ne-lamination.Phakathi nalesi sikhathi, kunezinqubo eziningana zokungena egumbini lokukhanya eliphuzi, futhi ibhodi le-PCB eliluhlaza linomphumela omuhle kakhulu wokubukwa ekamelweni lokukhanya okuphuzi.Okwesibili, ebhodini le-SMT PCB, izinyathelo zokuthina, zokucwenga kanye nokuqinisekisa kwe-AOI konke kudinga ukuma nokulinganiswa kwamehlo, kanti i-PCB eluhlaza ingcono ekuhlonzweni kwezinsimbi.

Ingxenye yenqubo yokuhlola incike ekubhekweni kwabasebenzi (manje iningi labo lisebenzisa ukuhlolwa kwenaliti endizayo esikhundleni somsebenzi wezandla).Balokhu begqolozele ibhodi ngaphansi kokukhanya okuqinile, futhi umonakalo oluhlaza emehlweni uphansi kakhulu.Ibhodi le-PCB eluhlaza linobungani bemvelo, futhi ngemva kokuvuselelwa kabusha kwezinga lokushisa, ngeke likhiphe amagesi anobuthi.

Eminye imibala ye-PCB, efana noluhlaza okwesibhakabhaka nomnyama ifakwe i-cobalt ne-carbon ngokulandelana.Ngenxa yokuthi i-conductive ebuthakathaka, kunengozi yesifunda esifushane.

Njengebhodi elimnyama, kungenzeka kakhulu ukuthi libangele umehluko wombala ngenxa yezinkinga zenqubo nempahla eluhlaza ekukhiqizeni, okuholela esilinganisweni esiphezulu sesici se-PCB.Umzila webhodi lesifunda elimnyama akulula ukulibona, okuzokwandisa ubunzima bokugcinwa nokulungiswa kamuva.Ngakho-ke, abaningiPCB abakhiqizi bomhlanganoakazange asebenzise black PCB board.Ngisho nasemkhakheni wemboni yezempi nokulawulwa kwezimboni, imikhiqizo enezidingo zekhwalithi ephezulu iphinde isebenzise ibhodi le-PCB eluhlaza.

Uyini umphumela we-solder ukumelana nombala we-inki ebhodini le-PCB?

Ngemikhiqizo eqediwe, umthelela weziyinki ezihlukene ebhodini ubonakala ngokuyinhloko ekubukeni.Isibonelo, okuluhlaza kuhlanganisa ukukhanya kwelanga, okuluhlaza okukhanyayo, okuluhlaza okumnyama, okuluhlaza okotshani nokunye.Uma umbala ulula kakhulu, Ngemuva kwenqubo ye-plug hole, ukubukeka kwebhodi kuzoba sobala.Abanye abakhiqizi banoyinki abampofu, izinkinga zesilinganiso se-resin nedayi, futhi kuzoba namabhamuza nezinye izinkinga Thola ukushintsha kombala okuncane.Emikhiqizweni eqedwe kancane, umthelela ubonakala ikakhulukazi ngezinga lobunzima ekukhiqizeni.Le mibuzo inzima ukuyichaza.Oyinki bemibala abahlukene banezinqubo zokufaka imibala ezihlukene, okuhlanganisa ukufafaza nge-electrostatic, ukufutha nokuphrinta isikrini, kanye nenani likayinki nalo lihlukile.Uma kukhona iphutha elincane, umbala uzokonakala.

Nakuba umbala we-inki awunawo umthelela ebhodini le-PCB, ukushuba kwe-inki kunethonya elikhulu ku-impedance.Ikakhulukazi ebhodini legolide lamanzi, lilawula ubukhulu bukayinki ngokuqinile.Uyinki obomvu, ukushuba namabhamuza kulula ukuwalawula, futhi uyinki obomvu ungamboza amaphutha athile kusekethe, okubukeka kangcono kakhulu, kodwa okubi ukuthi intengo ibiza kakhulu.Lapho uthwebula izithombe, ukuchayeka okubomvu nokuphuzi kuzinza kakhulu, futhi okumhlophe yikona okubi kakhulu okulawulwayo.

Kafushane, umbala awunawo umthelela ekusebenzeni kwebhodi eliqediwe, futhi awunathonya elincane kuwoI-SMT PCBibhodi nezinye izixhumanisi.Ekwakhiweni kwe-PCB, ukulawula ngokuqinile yonke imininingwane kusixhumanisi ngasinye kuyisihluthulelo sebhodi le-PCB elihle.Imibala ehlukene yebhodi le-PCB, ikakhulukazi ukubukeka okungcono komkhiqizo, asincomi umbala njengento ebalulekile ekucubunguleni kwe-PCB.