Imbangela Nesixazululo Sokuguqulwa Kwebhodi Le-PCB

Ukuhlanekezela kwe-PCB kuyinkinga evamile ekukhiqizweni kwe-PCBA ngobuningi, okuzoba nomthelela omkhulu ekuhlanganiseni nasekuhlolweni, okuholela ekungazinzi komsebenzi wesekethe ye-elekthronikhi, isifunda esifushane/ukwehluleka kwesekethe evulekile.

Izimbangela ze-PCB deformation zimi kanje:

1. Izinga lokushisa le-PCBA board passing furnace

Amabhodi esekethe ahlukene anokubekezelela ukushisa okukhulu.Lapho i-reflow ovenizinga lokushisa liphezulu kakhulu, liphakeme kunenani eliphakeme lebhodi lesifunda, lizokwenza ukuthi ibhodi lithambe futhi libangele ukuguqulwa.

2. Imbangela yebhodi le-PCB

Ukuthandwa kobuchwepheshe obungenawo umthofu, izinga lokushisa lesithando somlilo liphakeme kunomthofu, futhi izidingo zobuchwepheshe bamapuleti ziphakeme futhi ziphakeme.Uma uphansi inani le-TG, ibhodi lesifunda lizokhubazeka kalula phakathi kwesithando somlilo.Lapho inani le-TG liphakeme, ibhodi lizobiza kakhulu.

3. Usayizi webhodi le-PCBA kanye nenani lamabhodi

Lapho ibhodi lesifunda seliphelilereflow welding umshini, ngokuvamile ifakwa eketangeni ukuze idluliselwe, futhi amaketango ezinhlangothini zombili asebenza njengamaphuzu okusekela.Ubukhulu bebhodi lesifunda likhulu kakhulu noma inani lamabhodi likhulu kakhulu, okuholela ekucindezelekeni kwebhodi lesifunda ukuya endaweni ephakathi, okuholela ekuguqukeni.

4. Ukujiya kwebhodi le-PCBA

Ngokuthuthukiswa kwemikhiqizo ye-elekthronikhi ekuqondeni okuncane nokuncane, ubukhulu bebhodi lesifunda buba buncane.Ibhodi lesifunda elincane lincane, kulula ukubangela ukuguqulwa kwebhodi ngaphansi kwethonya lokushisa eliphezulu lapho u-reflow welding.

5. Ukujula kwe-v-cut

I-V-cut izobhubhisa i-sub-structure yebhodi.I-V-cut izosika imifantu eshidini elikhulu lokuqala.Uma umugqa we-V-cut ujule kakhulu, ukuguqulwa kwebhodi le-PCBA kuzobangelwa.
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.

Izixazululo:

1. Uma intengo nesikhala sivuma, khetha i-PCB ene-Tg ephezulu noma ukhuphule ukujiya kwe-PCB ukuze uthole isici esingcono kakhulu.

2. Yakha i-PCB ngokunengqondo, indawo ye-foil yensimbi enezinhlangothi ezimbili kufanele ilingane, futhi ungqimba lwethusi kufanele lumbozwe lapho ungekho umjikelezo, futhi luvele ngendlela yegridi ukwandisa ukuqina kwe-PCB.

3. I-PCB ibhakwa ngaphambilini ngaphambi kwe-SMT ngo-125℃/4h.

4. Lungisa indawo noma ibanga lokubopha ukuze uqinisekise isikhala sokunwetshwa kokushisisa kwe-PCB.

5. Inqubo yokushisela izinga lokushisa liphansi ngangokunokwenzeka;Ukuhlanekezela okuncane sekuvele, kungafakwa endaweni yokubeka, ukusetha kabusha izinga lokushisa, ukukhulula ukucindezeleka, imiphumela egculisayo ngokuvamile izotholakala.