Reflow ovhenindeimwe yematatu makuru maitiro muSMT yekumisikidza maitiro.Inonyanya kushandiswa kutengesa bhodhi redunhu rezvikamu zvakaiswa.Iyo solder paste inonyungudutswa nekudziya kuitira kuti chigamba chinhu uye redunhu bhodhi solder pad zvibatanidzwe pamwechete.Kunzwisisareflow soldering muchina, unofanira kunzwisisa maitiro eSMT kutanga.
NeoDen reflow oveni IN12
Iyo solder paste musanganiswa wesimbi tin hupfu, flux uye mamwe makemikari, asi tin mairi iripo yakazvimiririra sediki mabhesi.Kana PCB bhodhi kuburikidza akati wandei tembiricha nzvimbo mu reflow choto, pamusoro 217 madhigirii Celsius, diki tin beads kunyunguduka.Mushure mekuyerera uye zvimwe zvinhu zvagadziriswa, kuitira kuti zvisingaverengeki zvimedu zvidiki zvinyunguduke pamwechete, kureva kuti, gadzira izvo zvidiki zvidzore kumamiriro emvura ekuyerera, maitiro aya anowanzo kunzi ndeye reflux.Reflux zvinoreva kuti hupfu hwerata kubva kune yaimbova yakasimba kudzokera kumvura, uyezve kubva munzvimbo inotonhorera kudzokera kune yakasimba zvakare.
Nhanganyaya kune reflow soldering nzira
Differentreflow soldering muchinaine zvakanakira zvakasiyana, uye maitiro akasiyanawo.
Infrared reflow soldering: yakakwira radiation conduction yekudziya kupisa, yakanyanya tembiricha kunyura, nyore kudzora tembiricha curve, PCB yepamusoro uye yakaderera tembiricha iri nyore kudzora kana kaviri-sided welding.Iva nemumvuri maitiro, tembiricha haina yunifomu, iri nyore kukonzeresa zvikamu kana PCB yemuno kupisa kunze.
Kupisa mhepo inoyerera solder: yunifomu convection conduction tembiricha, yakanaka welding mhando.Tembiricha gradient yakaoma kudzora.
Kumanikidzwa kupisa mhepo reflow welding yakakamurwa kuita mhando mbiri zvichienderana nehukuru hwayo hwekugadzira:
Temperature zone midziyo: kugadzirwa kwakawanda kwakakodzera kugadzirwa kwakawanda kwePCB board yakaiswa pabhandi rekufamba, kuti ipfuure nepakati penzvimbo yakati wandei yekudziya tembiricha yakarongeka, yakawandisa tembiricha tembiricha ichavepo tembiricha yekusvetuka chiitiko, haina kukodzera gungano repamusoro-density. plate welding.Yakakurawo uye inoshandisa magetsi akawanda.
Temperature zone diki desktop zvishandiso: diki uye yepakati batch kugadzirwa nekukurumidza kutsvagisa uye kusimudzira munzvimbo yakatarwa, tembiricha zvinoenderana neyakaiswa mamiriro anochinja nekufamba kwenguva, nyore kushanda.Kugadziriswa kwezvakaremara pamusoro pezvikamu (kunyanya zvikamu zvakakura) hazvina kukodzera kugadzirwa kwehuwandu.
Nguva yekutumira: Kubvumbi-28-2021