PCBA wozungulira bolodi kuwotcherera chimbale vuto wakuda ndi zambiri wamba dera bolodi zoipa chodabwitsa, chifukwa PCBA kuwotcherera chimbale wakuda pazifukwa zambiri, koma nthawi zambiri chifukwa cha zifukwa zotsatirazi:
1, pad oxidation: Ngati PCBA pad imadziwika ndi chinyezi kwa nthawi yayitali, imapangitsa kuti pad ikhale oxidize, ndikupanga filimu ya oxide pamwamba pa pedi, zomwe zimapangitsa kuti pakhale zakuda, chifukwa chake, posunga PCBA, chidwi chiyenera kulipidwa kusunga chilengedwe youma, ndipo nthawi yomweyo, PCBA ayenera vacuumed mu nthawi kupewa kukhudzana kwa nthawi yaitali ndi mpweya!
2, vuto kuwotcherera ndondomeko: mu kuwotcherera reflow kapena kuwotcherera yoweyula, ngati kuwotcherera kutentha kwambiri kapena nthawi kuwotcherera ndi yaitali kwambiri, zimabweretsa makutidwe ndi okosijeni wa kuwotcherera PAD chakuda chodabwitsa, izi zimachitika kawirikawiri chifukwa kuwotcherera. kutentha kuposa analimbikitsa kutentha osiyanasiyana solder, chifukwa inapita patsogolo makutidwe ndi okosijeni ndondomeko, kotero mu ndondomeko kuwotcherera ayenera mogwirizana ndi specifications ntchito kwa kuwotcherera!
3, vuto solder: solder zambiri amatanthauza phala solder, malata, solder khalidwe ndi zabwino kapena zoipa, ngati ntchito osauka khalidwe solder, adzapanganso solder mu zinthu zoipa ndi zonyansa anamasulidwa, chifukwa chakuda PAD, kotero, posankha solder, tiyenera kupewa kugwiritsa ntchito solder otsika!
4, kuyeretsa mavuto: Nthawi zambiri, pakugwiritsa ntchito flux kumafunika kuyeretsa bolodi, kuti muchotse zotsalira zapamadzi, ndipo ngati zotsalira za flux sizinachotsedwe, ndiye kuti zotsalirazi zitha kunyonyotsoka. kapena carbonize pa kutentha kwakukulu, kotero kuti pediyo iwoneke yakuda. Choncho, kuyeretsa nthawi yake pambuyo kuwotcherera ndikofunikira kwambiri!
5, mavuto chigawo: ngati khalidwe la zigawo zikuluzikulu zamagetsi si zabwino, kapena zinthu za pini chigawo osayenera, zingachititsenso kuti chodabwitsa cha black kuwotcherera chimbale, kotero, posankha zipangizo zamagetsi, tiyenera kusankha khalidwe labwino. zigawo kuti zitsimikizire kuti khalidwe la ❖ kuyanika ndi pini zazitsulo za zigawozo ndizoyenerera.
Pamwambapa ndi chifukwa chachikulu PCBA kuwotcherera thireyi wakuda, ndipo malinga ndi zifukwa zosiyanasiyana, tikhoza kusankha miyeso lolingana kusintha, kuti bwino kuchepetsa vuto la PCBA kuwotcherera thireyi wakuda, kusintha khalidwe la mankhwala!