Uyini umbala webhodi le-PCB, njengoba igama libonisa, uma uthola ibhodi le-PCB, ngokunembile ungabona umbala wamafutha ebhodini, okuyilokho esivame ukubhekisela kukho njengombala webhodi le-PCB. Imibala evamile ihlanganisa oluhlaza, okwesibhakabhaka, obomvu nomnyama, njll. Linda.
1. Uyinki oluhlaza yiwona osetshenziswa kabanzi, mude kunawo wonke emlandweni, futhi ushibhe kakhulu emakethe yamanje, ngakho oluhlaza kusetshenziswa inani elikhulu labakhiqizi njengombala oyinhloko wemikhiqizo yabo.
2. Ngaphansi kwezimo ezijwayelekile, wonke umkhiqizo webhodi le-PCB kufanele udlule ekwenziweni kwebhodi kanye nezinqubo ze-SMT phakathi nenqubo yokukhiqiza. Lapho wenza ibhodi, kunezinqubo eziningana okumelwe zidlule ekamelweni eliphuzi, ngoba okuluhlaza kuphuzi Umphumela wekamelo lokukhanya ungcono kuneminye imibala, kodwa lesi akusona isizathu esiyinhloko.
Lapho kuthengiswa izingxenye ze-SMT, i-PCB kufanele idlule ezinqubweni ezifana ne-solder paste kanye nesichibi kanye nokuqinisekisa kokugcina kwe-AOI. Lezi zinqubo zidinga ukuma nokulinganiswa kwe-optical. Umbala wangemuva oluhlaza ungcono ekuhlonzeni ithuluzi.
3. Imibala ye-PCB evamile ibomvu, iphuzi, iluhlaza okotshani, eluhlaza okwesibhakabhaka kanye nomnyama. Kodwa-ke, ngenxa yezinkinga ezifana nenqubo yokukhiqiza, inqubo yokuhlola ikhwalithi yemigqa eminingi kusafanele ithembele ekubukeni kwamehlo enqunu kanye nokuqashelwa kwabasebenzi (Yebo, iningi lobuchwepheshe bokuhlola i-flying probe isetshenziswa okwamanje). Amehlo alokhu egqolozele ibhodi ngaphansi kokukhanya okunamandla. Lena inqubo yokusebenza ekhathazayo kakhulu. Uma kuqhathaniswa, okuluhlaza kuyingozi kakhulu emehlweni, ngakho-ke abakhiqizi abaningi emakethe njengamanje basebenzisa ama-PCB aluhlaza.
4. Umgomo wokuluhlaza okwesibhakabhaka nokumnyama ukuthi ngokulandelana kwawo kufakwe izinto ezifana ne-cobalt ne-carbon, ezinokusebenza okuthile kukagesi, kanye nezinkinga ze-short-circuit cishe zingenzeka uma amandla avuliwe. Ngaphezu kwalokho, ama-PCB aluhlaza anobungani bemvelo, futhi ezindaweni zokushisa okuphezulu Uma esetshenziswa endaweni ephakathi nendawo, ngokuvamile ayikho igesi enobuthi ezokhishwa.
Kukhona nenani elincane labakhiqizi emakethe abasebenzisa amabhodi we-PCB amnyama. Izizathu eziyinhloko zalokhu yizizathu ezimbili:
Kubukeka kuphezulu;
Ibhodi elimnyama akulula ukubona i-wiring, okuletha izinga elithile lobunzima ebhodini lokukopisha;
Njengamanje, iningi lamabhodi ashumekiwe e-Android ama-PCB amnyama.
5. Kusukela ngezigaba ezimaphakathi nezakamuva zekhulu leminyaka elidlule, imboni isiqalile ukunaka umbala wamabhodi e-PCB, ikakhulukazi ngoba abakhiqizi abaningi besigaba sokuqala bamukele imiklamo yombala webhodi le-PCB eluhlaza yezinhlobo zebhodi ezisezingeni eliphezulu, ngakho-ke abantu. kholwa kancane ukuthi i-PCB Uma umbala uluhlaza, kufanele ube phezulu.