Ngohlelo lwereflow ovenfuthiumshini we-wave soldering, ibhodi le-PCB lizokhubazeka ngenxa yethonya lezici ezihlukahlukene, okuholela ekushiseni okumpofu kwe-PCBA.Sizomane sihlaziye imbangela yokuguqulwa kwebhodi le-PCBA.
1. Izinga lokushisa le-PCB board passing furnace
Ibhodi lesifunda ngalinye lizoba nenani eliphakeme le-TG.Lapho izinga lokushisa le-oven reflow liphezulu kakhulu, liphakeme kunenani eliphakeme le-TG lebhodi lesifunda, ibhodi lizothambisa futhi libangele ukuguqulwa.
2. Ibhodi le-PCB
Ngokuthandwa kobuchwepheshe obungenawo umthofu, izinga lokushisa lomlilo liphakeme kunomthofu, futhi izidingo zepuleti ziphakeme futhi ziphakeme.Lapho inani le-TG liphansi, maningi amathuba okuba ibhodi lesifunda likhubazeke phakathi nesithando somlilo, kodwa uma liphakeme inani le-TG, intengo ibiza kakhulu.
3. Ubukhulu bebhodi le-PCBA
Ngokuthuthukiswa kwemikhiqizo ye-elekthronikhi ibheke endaweni encane nencane, ukushuba kwebhodi lesifunda kuya kuba mncane.Ibhodi lesifunda elincane lincane, ukuguqulwa kwebhodi kungenzeka ukuthi kubangelwa ukushisa okuphezulu ngesikhathi sokushisa kabusha.
4. Usayizi webhodi le-PCBA kanye nenani lamabhodi
Lapho ibhodi lesifunda lishiselwa kabusha, livamise ukufakwa kuchungechunge ukuze lidluliselwe.Amaketango ezinhlangothini zombili asebenza njengamaphuzu okusekela.Uma ubukhulu bebhodi lesifunda likhulu kakhulu noma inani lamabhodi likhulu kakhulu, kulula ukuthi ibhodi lesifunda lihlehle liye endaweni ephakathi, okuholela ekuguquguqukeni.
5. Ukujula kwe-V-Cut
I-V-cut izobhubhisa i-sub-structure yebhodi.I-V-cut izosika imifantu eshidini elikhulu lokuqala, futhi ukujula okwedlulele komugqa we-V-cut kuzoholela ekulimaleni kwebhodi le-PCBA.
6. Ibhodi le-PCBA limbozwe ngendawo yethusi engalingani
Kumklamo webhodi lesifunda jikelele unendawo enkulu ye-foil yethusi yokumisa phansi, ngezinye izikhathi ungqimba lwe-Vcc luklame indawo enkulu ye-foil yethusi, lapho lezi zindawo ezinkulu ze-foil yethusi zingakwazi ukusabalalisa ngokulinganayo kumabhodi wesifunda afanayo, zizobangela ukushisa okungalingani futhi Ukupholisa isivinini, amabhodi wesifunda, yebo, futhi kungaba ukushisa bilges abandayo shwabanisa, Uma ukunwetshwa futhi ukusikwa kungeke kubangelwa kanyekanye ukucindezeleka ezahlukene kanye deformation, ngalesi sikhathi uma izinga lokushisa ibhodi ifinyelele umkhawulo ongenhla TG value, ibhodi lizoqala ukuthamba, okuholela ekuguquguqukeni unomphela.
7. Amaphuzu okuxhumana ezingqimba ebhodini le-PCBA
Ibhodi lesifunda lanamuhla liyibhodi elinezingqimba eziningi, kunezindawo eziningi zokuxhuma zokumba, lawa maphuzu okuxhumana ahlukaniswe ngembobo, imbobo eyimpumputhe, indawo yomgodi ongcwatshwe, lawa maphuzu okuxhumana azokhawulela umphumela wokunwetshwa okushisayo nokuncipha kwebhodi lesifunda. , okuholela ekuguqulweni kwebhodi.Okungenhla yizizathu eziyinhloko deformation PCBA ibhodi.Ngesikhathi sokucubungula nokukhiqizwa kwe-PCBA, lezi zizathu zingavinjelwa futhi ukuguqulwa kwebhodi le-PCBA kungancishiswa ngempumelelo.
Isikhathi sokuthumela: Oct-12-2021