Ukucutshungulwa kwe-PCBA, ku-SMT kanye ne-DIP ye-plug-in soldering, ingaphezulu lamajoyinti e-solder lizoba yinsalela ye-flux rosin, njll. Izinsalela ziqukethe izinto ezigqwalayo, izinsalela ezingxenyeni zephedi le-pcba ngenhla, zingabangela ukuvuza, ukujikeleza okufushane futhi ngaleyo ndlela. kuthinte impilo yomkhiqizo.Izinsalela zingcolile, azihlangabezani nezidingo zokuhlanzeka komkhiqizo, ngakho-ke i-pcba idinga ukuhlanzwa ngaphambi kokuthunyelwa.Okulandelayo kukuthatha uqonde inqubo yokukhiqiza amanzi pcba ukugeza amanye amathiphu kanye zokuphepha.
Nge-miniaturization yemikhiqizo ye-elekthronikhi, ukuminyana kwezingxenye ze-elekthronikhi, isikhala esincane, ukuhlanza kuye kwaba nzima kakhulu, ekukhetheni ukuthi iyiphi inqubo yokuhlanza, ngokusho kohlobo lwe-solder paste kanye ne-flux, ukubaluleka komkhiqizo, izidingo zekhasimende zokuhlanza ikhwalithi. Ukukhetha.
I. Izindlela zokuhlanza ze-PCBA
1. Ukuhlanza amanzi ahlanzekile: fafaza noma ugeze idiphu
Ukuhlanza amanzi ahlanzekile kuwukusebenzisa amanzi angcolile, ukufutha noma ukugeza i-dip, okuphephile ukusebenzisa, okomile ngemva kokuhlanza, lokhu kuhlanza kushibhile futhi kuphephile, kodwa okunye ukuchithwa akulula ukususa.
2. Ukuhlanza amanzi ahlanzekile kancane
Ukuhlanza ngamanzi ahlanzekile ukusetshenziswa kwe-organic solvents kanye namanzi akhishwe, anezela amanye ama-agent asebenzayo, izithasiselo zokwenza i-ejenti yokuhlanza, lesi sihlanzi siqukethe ama-organic solvents, ubuthi obuphansi, ukusetshenziswa okuphephile, kodwa ukugeza ngamanzi, bese omile. .
3. Ukuhlanza kwe-ultrasonic
Ukusetshenziswa kwemvamisa ephezulu kakhulu ku-liquid medium ibe amandla e-kinetic, ukwakheka kwamabhamuza amancane angenakubalwa ashaya into engaphezulu, ukuze ukungcola kuphume, ukuze kufezwe umphumela wokuhlanza ukungcola, kusebenza kahle kakhulu. , kodwa futhi nokunciphisa ukuphazamiseka kwe-electromagnetic.
II.Izidingo zobuchwepheshe bokuhlanza i-PCBA
1. Izingxenye ze-PCBA zokushisela ngaphandle kwezidingo ezikhethekile, yonke imikhiqizo ingasetshenziswa ukuhlanza ibhodi le-PCBA ngama-ejenti okuhlanza akhethekile.
2. Ezinye izingxenye ze-elekthronikhi zivinjelwe ukuthintana ne-ejenti yokuhlanza ekhethekile, njengalezi: izinkinobho zokhiye, isokhethi yenethiwekhi, i-buzzer, amaseli ebhethri, isibonisi se-LCD, izingxenye zepulasitiki, amalensi, njll.
3. Inqubo yokuhlanza, ayikwazi ukusebenzisa ama-tweezers nezinye i-PCBA yokuxhumana eqondile yensimbi, ukuze ingalimazi ibhodi lebhodi le-PCBA, bhala.
4. PCBA emva izingxenye soldering, Flux izinsalela ngokuhamba kwesikhathi izoveza ukugqwala ukusabela ngokomzimba, kufanele ihlanzwe ngokushesha ngangokunokwenzeka.
5. Ukuhlanzwa kwe-PCBA sekuqediwe, kufanele kufakwe kuhhavini cishe ama-degree angu-40-50, ngemva kwemizuzu engu-30 yokubhaka, bese ususa ibhodi le-PCBA ngemva kokumiswa.
III.Izinyathelo zokuphepha ze-PCBA zokuhlanza
1. Ibhodi lebhodi le-PCBA alikwazi ukuguquguquka okuyizinsalela, ubuhlalu bethayela kanye nenyela;amalunga angaphezulu nawe-solder awakwazi ukuba ne-white, gray phenomenon.
2. Ibhodi lebhodi le-PCBA alikwazi ukunamathela;ukuhlanza kumele kufake indandatho yesandla ye-electrostatic.
3. I-PCBA kufanele igqoke imaski eyisivikelo ngaphambi kokuhlanza.
4. selihlanzwe ibhodi le-PCBA futhi alizange lihlanzwe ibhodi le-PCBA libekwe ngokwehlukana futhi limakwe.
5. Ibhodi le-PCBA elihlanziwe alivunyelwe ukuthinta ngokuqondile indawo engaphezulu ngezandla.
Isikhathi sokuthumela: Feb-24-2023