Ulivimbela Kanjani Ibhodi Le-PCB Ekugobeni Futhi Ekugwebeni Lapho Idlula Kuhhavini Wokugeleza Kabusha

Njengoba sonke sazi, i-PCB ijwayele ukugoba futhi inyakaze lapho idlula kuhhavini ogelezayo.Indlela yokuvimbela i-PCB ekugobeni nasekujikeni lapho idlula kuhhavini lokugeleza kabusha kuchazwe ngezansi

1. Yehlisa ithonya lokushisa ekucindezelekeni kwe-PCB

Njengoba "izinga lokushisa" liwumthombo oyinhloko wokucindezeleka kwepuleti, inqobo nje uma izinga lokushisa lomlilo we-reflow lincishisiwe noma izinga lokushisa kanye nokupholisa kwepuleti esithandweni somlilo wehliswa kancane, ukuvela kokugoba kwepuleti kanye ne-warping kungancishiswa kakhulu.Kodwa-ke, kungase kube neminye imiphumela emibi, njenge-solder short circuit.

2. Yamukela ipuleti le-TG eliphezulu

I-TG izinga lokushisa lokushintsha kwengilazi, okungukuthi, izinga lokushisa lapho impahla ishintsha isuka esimweni esiyingilazi iye esimweni senjoloba.Inani eliphansi le-TG lezinto ezibonakalayo, lapho ipuleti liqala ukuthamba ngokushesha ngemva kokungena esithandweni sokugeleza kabusha, futhi isikhathi eside sokuba isimo senjoloba ethambile, kulapho kubi kakhulu ukuwohloka kwepuleti.Amandla okuthwala ukucindezeleka nokuguqulwa angakhuliswa ngokusebenzisa ipuleti ene-TG ephakeme, kodwa intengo yezinto ezibonakalayo iphakeme kakhulu.

3. Khulisa ubukhulu bebhodi lesifunda

Imikhiqizo eminingi ye-elekthronikhi ukuze kuzuzwe inhloso yokuncipha, ubukhulu bebhodi bushiywe ngu-1.0 mm, 0.8 mm, noma ngisho no-0.6 mm, ubukhulu obunjalo bokugcina ibhodi ngemuva kwesithando somlilo singawohloki, empeleni kancane. kunzima, kuphakanyiswa ukuthi uma kungekho zidingo ezincane, ibhodi lingasebenzisa ubukhulu be-1.6 mm, okunganciphisa kakhulu ingozi yokugoba nokuguqulwa.

4. Yehlisa usayizi webhodi lesifunda kanye nenani lamaphaneli

Njengoba ama-ovens amaningi agelezayo asebenzisa amaketanga ukushayela amabhodi wesifunda phambili, ubukhulu obukhulu bebhodi lesifunda, i-concave eyengeziwe izoba kuhhavini lokugeleza kabusha ngenxa yesisindo sayo.Ngakho-ke, uma uhlangothi olude lwebhodi lesifunda lubekwe ochungechungeni lwe-oven reflow njengonqenqema lwebhodi, ukuguqulwa kwe-concave okubangelwa isisindo sebhodi lesifunda kungancishiswa, futhi inani lamabhodi lingancishiswa. lesi sizathu, Okusho ukuthi, lapho isithando somlilo, zama ukusebenzisa ohlangothini ewumngcingo perpendicular isiqondiso somlilo, ungakwazi ukufeza ukuze low sag deformation.

5. Kusetshenziswe i-pallet fixture

Uma zonke izindlela ezingenhla zinzima ukufeza, Kuwukusebenzisa isithwali sokugeleza kabusha / isifanekiso ukunciphisa ukuwohloka.Isizathu sokuthi isithwali sokugeleza kabusha / isifanekiso singanciphisa ukugoba nokujika kwebhodi ukuthi kungakhathaliseki ukuthi ukunwetshwa okushisayo noma ukufinyela okubandayo, ithreyi kulindeleke ukuthi ibambe ibhodi lesifunda.Lapho izinga lokushisa lebhodi lesifunda liphansi kunevelu ye-TG futhi liqala ukuqina futhi, lingagcina usayizi oyindilinga.

Uma ugqoko olulodwa-ungqimba ayikwazi ukunciphisa deformation ibhodi wesifunda, kumelwe wengeze ungqimba cover ukubopha ibhodi wesifunda nge izingqimba ezimbili zamathileyi, okungase kakhulu ukunciphisa deformation ibhodi wesifunda ngokusebenzisa kuhhavini reflow.Kodwa-ke, leli threyi lesithando libiza kakhulu, futhi lidinga ukungeza imanuwali ukubeka nokugaywa kabusha kwethreyi.

6. Sebenzisa umzila esikhundleni se-V-CUT

Njengoba i-V-CUT izolimaza amandla esakhiwo samabhodi wesekethe, zama ukungasebenzisi ukuhlukaniswa kwe-V-CUT noma ukunciphisa ukujula kwe-V-CUT.