Infrared + hot air reflow soldering

Bohareng ba lilemo tsa bo-1990, ho ne ho e-na le mokhoa oa ho fetisetsa mocheso oa moea o chesang oa infrared + ho reflow soldering Japane.E futhumatsoa ke mahlaseli a infrared a 30% le moea o chesang oa 70% e le sesebelisoa sa mocheso.Setofo sa infrared hot air reflow se kopanya hantle melemo ea infrared reflow le convection convection hot air reflow, 'me ke mokhoa o nepahetseng oa ho futhumatsa lekholong la bo21 la lilemo.E sebelisa ka botlalo litšoaneleho tsa ho kenella ka matla a mahlaseli a infrared, ts'ebetso e phahameng ea mocheso le ho boloka matla, 'me ka nako e ts'oanang e hlola ka katleho phapang ea mocheso le phello ea tšireletso ea solder ea infrared reflow,' me e etsa hore ho be le solder e chesang ea moea o chesang.

Mofuta ona oareflow solderingsebōpi se itšetlehile ka sebōpi sa IR 'me se eketsa moea o chesang ho etsa hore mocheso oa sebōpi o be o ts'oanang haholoanyane.Mocheso o kentsoeng ke lisebelisoa le mebala e fapaneng o fapane, ke hore, boleng ba Q bo fapane, 'me ho phahama ha mocheso AT ho boetse ho fapane.Mohlala, sephutheloana sa SMD joalo ka lC ke black phenolic kapa epoxy, 'me lead ke tšepe e tšoeu.Ha e futhumetse feela, mocheso oa loto o tlase ho feta 'mele oa eona o motšo oa SMD.Ho eketsa moea o chesang ho ka etsa hore mocheso o be o ts'oanang, 'me oa hlōla phapang ea ho monya mocheso le moriti o mobe.Lionto tsa infrared + hot air reflow li 'nile tsa sebelisoa haholo lefatšeng.

Kaha mahlaseli a infrared a tla ba le litlamorao tse mpe tsa shading le chromatic aberration likarolong tse nang le bophahamo bo fapaneng, moea o chesang o ka boela oa fefoloa ho hokahanya chromatic aberration le ho thusa khaello ea likhutlo tsa eona tse shoeleng.Naetrojene e chesang ke eona e loketseng ka ho fetisisa bakeng sa moea o chesang o ka fokatsoang.Lebelo la phetiso ea mocheso oa convective le itšetlehile ka lebelo la moea, empa lebelo le feteletseng la moea le tla baka ho falla ha likarolo le ho khothalletsa oxidation ea manonyeletso a solder, 'me lebelo la moea le lokela ho laoloa ho 1. Om/s~1.8III/S e loketse .Ho na le mefuta e 'meli ea tlhahiso ea moea o chesang: axial fan generation (ho bonolo ho theha phallo ea laminar,' me motsamao oa eona o etsa hore moeli oa sebaka se seng le se seng sa mocheso o se ke oa hlaka) le tlhahiso ea fan ea tangential (fan e kenngoa ka ntle ho heater, eo e hlahisa maqhubu a eddy holim'a phanele hore sebaka se seng le se seng sa mocheso se ka futhumatsoa.