Amahhavini agelezayo asetshenziswa ekwenziweni kwe-Surface Mount Technology (SMT) noma ezinqubweni zokupakisha ze-semiconductor.Ngokuvamile, amahhavini agelezayo ayingxenye yomugqa wokuhlanganisa we-elekthronikhi, okuhlanganisa nemishini yokunyathelisa nokubeka.Umshini wokuphrinta uphrinta unamathisele we-solder ku-PCB, futhi umshini wokubeka ubeka izingxenye kunamathisele we-solder ophrintiwe.
Ukusetha Ibhodwe Le-Reflow Solder
Ukusetha i-oven reflow kudinga ulwazi lwe-solder paste esetshenziswa emhlanganweni.Ingabe i-slurry idinga indawo ye-nitrogen (i-oksijini ephansi) ngesikhathi sokushisa?Ukucaciswa kokugeleza kabusha, okuhlanganisa izinga lokushisa eliphakeme, isikhathi esingaphezu kwe-liquidus (TAL), njll.?Uma lezi zici zenqubo sezaziwa, unjiniyela wenqubo angasebenza ukuze amise iresiphi ye-ovini yokugeleza kabusha ngenhloso yokuzuza iphrofayili ethile yokugeleza kabusha.Iresiphi ye-ovini egeleza kabusha ibhekisela kuzilungiselelo zezinga lokushisa likahhavini, okuhlanganisa amazinga okushisa wendawo, amanani okuhambisa, namazinga okugeleza kwegesi.Iphrofayili yokugeleza kabusha izinga lokushisa ibhodi “elibonayo” phakathi nenqubo yokugeleza kabusha.Kunezici eziningi okufanele zicatshangelwe lapho uthuthukisa inqubo yokugeleza kabusha.Lingakanani ibhodi lesekhethi?Ingabe zikhona izingxenye ezincane kakhulu ebhodini ezingalinyazwa ukuguquguquka okuphezulu?Ungakanani umkhawulo wokushisa wengxenye ephezulu?Ingabe kunenkinga ngamazinga okushisa asheshayo?Uthini umumo wephrofayela oyifunayo?
Izici nezici ze-Reflow Oven
Amahhavini amaningi agelezayo anesofthiwe yokusetha iresiphi ezenzakalelayo evumela ukuthi i-reflow solder idale iresiphi yokuqala ngokusekelwe ezicini zebhodi kanye nokucaciswa kokunamathisela kwe-solder.Hlaziya i-reflow soldering usebenzisa irekhoda eshisayo noma intambo ye-thermocouple elandelanayo.Ama-setpoints okugeleza kabusha angalungiswa aye phezulu/phansi ngokusekelwe kuphrofayela yangempela eshisayo uma iqhathaniswa nezicaciso zokunamathisela kwe-solder kanye nezithiyo zebhodi/ingxenye yokushisa.Ngaphandle kokusethwa kweresiphi ezenzakalelayo, onjiniyela bangasebenzisa iphrofayela ezenzakalelayo yokugeleza futhi balungise iresiphi ukuze bagxilise inqubo ngokuhlaziya.
Isikhathi sokuthumela: Apr-17-2023