Yakanyanya Tembiricha Kudzora kweLaser Systems uye Maindasitiri Zvishandiso Kubva 2002
Mutauro
Mukugadzira zvemagetsi, SMT inoshandiswa zvakanyanya asi inotarisana nekuremara kwekutengesa senge inotonhora solder, bhiriji, voids, uye chikamu chekuchinja. Nyaya idzi dzinogona kudzikiswa nekugadzirisa zvirongwa zvekunhonga-nenzvimbo, kudzora tembiricha yekutengesa, kubata solder paste application, kuvandudza PCB pad dhizaini, uye kuchengetedza yakagadzikana tembiricha nharaunda. Aya matanho anowedzera kunaka kwechigadzirwa uye kuvimbika.
Surface Mount Technology (SMT) inonyanya kufarirwa muindasitiri yekugadzira zvemagetsi nekuda kwekuita kwayo kwakanyanya uye yakakwira-density magungano mabhenefiti. Nekudaro, kukanganisa kwekutengesa muhurongwa hweSMT zvinhu zvakakosha zvinokanganisa kunaka uye kuvimbika kwezvigadzirwa zvemagetsi. Ichi chinyorwa chichaongorora zvakajairwa soldering kukanganisa muSMT uye mhinduro dzadzo.
Cold Soldering: Cold soldering inoitika kana kupisa kwekutengesa kusina kukwana kana kuti nguva yekutengesa ipfupi, zvichiita kuti solder isanyunguduke zvachose uye zvichiita kuti irege kunyunguduka. Kuti udzivise kutonhora kwemasoja, vagadziri vanofanirwa kuve nechokwadi chekuti reflow soldering muchina une chaiyo tembiricha kutonga uye kuseta yakakodzera solder tembiricha uye nguva zvichienderana nezvinodiwa chaizvo zvesolder paste uye zvikamu.
Solder Bridging: Solder bridging ndiyo imwe nyaya yakajairika muSMT, uko solder inobatanidza padyo nenzvimbo dzekutengesa. Izvi zvinowanzo kukonzerwa nekunyanyisa solder paste application kana zvisina musoro PCB pad dhizaini. Kugadzirisa bhiriji rekutengesa, gadzirisa chirongwa chekutora-ne-nzvimbo, kudzora huwandu hwesolder paste yakaiswa, uye gadzirisa PCB pad dhizaini kuti ive nechokwadi chakakwana pakati pemapadhi.
Voids: Voids inoreva kuvapo kwenzvimbo dzisina chinhu mukati mekutengesa mapeji asina kuzadzwa ne solder. Izvi zvinogona kukanganisa zvakanyanya simba uye kuvimbika kweiyo soldering. Kuti udzivise voids, isa zvakanaka reflow soldering tembiricha kuti uone kuti solder inonyungudika zvizere uye inozadza mapads. Pamusoro pezvo, ita shuwa kuti pane yakaringana flux evaporation panguva ye soldering kuti udzivise gasi rinosara rinogona kugadzira voids.
Component Shift: Munguva ye reflow soldering process, zvikamu zvinogona kufamba nekuda kwekunyunguduka kwe solder, zvichitungamira kune zvisina kurongeka solder zvinzvimbo. Kuti udzivise kuchinja kwechikamu, shongedza chirongwa chekutora-nenzvimbo uye ive nechokwadi chekuti maparamita emuchina wekutora-nenzvimbo akaiswa nemazvo, kusanganisira kumhanya kwekuisa, kudzvanywa, uye rudzi rwenozzle. Sarudza mhuno dzakakodzera zvichienderana nehukuru uye chimiro chezvikamu kuti uone kuti dzakanamirwa zvakachengeteka kuPCB. Kuvandudza iyo PCB pad dhizaini kuti ive nechokwadi yakakwana padhi nzvimbo uye nzvimbo inogona zvakare kunyatso dzikisa chikamu chekuchinja.
Yakagadzikana Tembiricha Nzvimbo: Yakagadzikana tembiricha nharaunda yakakosha kune soldering mhando. Mvura Chillers , nekunyatso kudzora tembiricha yemvura inotonhorera, inopa yakagadzikana yakadzika-kutonhora kutonhora kune re-solderflowing michina nemimwe michina. Izvi zvinobatsira kuchengetedza solder mukati mehutano hwakakodzera hwekushisa kwekunyunguduka, kudzivisa kusagadzirisa kukanganisa kunokonzerwa nekupisa kana kupisa.
Nekukwenenzvera chirongwa chekutora-nenzvimbo, kuseta zvakanaka reflow soldering tembiricha, kuvandudza PCB dhizaini, nekusarudza manozzles akakodzera, tinogona kudzivirira zvinokanganisa zvakajairika mukutengesa muSMT uye kuwedzera kunaka uye kuvimbika kwezvigadzirwa.
Tiripo nokuda kwenyu kana muchitida.
Ndapota zadza fomu kuti ubate nesu, uye isu tichafara kukubatsira.
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