PCBA conformal ukutyabeka inkqubo yokutshiza flow

Ngokutsho kwabathengi, i-Cirket ikwanazo nenkonzo yokugquma ehambelanayo.I-PCBA yokugquma i-conformal ine-insulation egqwesileyo, ingqina ukufuma, ingqina ukuvuza, ingqina ukothuka, ingenathuli, i-corrosion-proof, anti-aging, mildew-proof, anti-part. ukukhulula kunye ne-insulation corona resistance properties, ezinokwandisa ixesha lokugcina le-PCBA. I-Cirket isoloko isebenzisa Ukutshiza nayo eyona ndlela ixhaphakileyo yokwaleka kushishino.

Cirket PCBA conformal ukutyabeka inkqubo yokutshiza ukuhamba

1. Izixhobo ezifunekayo

Ipeyinti yokwaleka engqinelanayo, ibhokisi yepeyinti, iiglavu zerabha, imaski okanye imaski yegesi, ibrashi, iteyiphu yokuncamathelisa, i-tweezers, izixhobo zokungenisa umoya, irack yokomisa kunye ne-oveni.

2. Ukutshiza amanyathelo

Ukupeyinta icala A → ukomisa umphezulu → ukupeyinta icala B → ukunyanga phantsi kobushushu begumbi

3. Iimfuno zokugquma

(1) Coca kwaye uyomise ibhodi ukususa ukufuma kunye namanzi ePCBA. Uthuli, ukufuma kunye neoli phezu komphezulu PCBA ukuba ziqatywe kufuneka zisuswe kuqala ukuze ukutyabeka akwazi ukusebenzisa ngokupheleleyo isiphumo yayo yokukhusela. Ukucoca ngokucokisekileyo kunokuqinisekisa ukuba iintsalela ezitshabalalisayo zisuswe ngokupheleleyo kwaye i-coating conformal ibambelela kakuhle kumphezulu webhodi yesekethe. Iimeko zokubhaka: 60 ° C, imizuzu eyi-10-20. Isiphumo esihle sokugquma ukutshiza xa ibhodi ishushu emva kokuba ikhutshwe kwi-oven.

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(3) Xa uxubha i-coating ehambelanayo, ibhodi yesekethe kufuneka ibekwe ngokusemandleni. Kufuneka kungabikho kuthontsiza emva kokuxubha. Ukwaleka kufuneka kube bushelelezi kwaye kungabikho iindawo ezivelileyo. Ubukhulu kufuneka bube phakathi kwe-0.1-0.3mm.

(4) Phambi kokubrasha okanye ukutshiza i-conformal coating, abasebenzi beSekethe baqinisekisa ukuba i-conformal coating ehlanjululweyo igutyungelwe ngokupheleleyo kwaye ishiywe iiyure ezi-2 phambi kokubrasha okanye ukutshiza. Sebenzisa ibrashi yefayibha ekumgangatho ophezulu ukubrasha ngobunono kwaye uyithi nkxu kwiqondo lobushushu begumbi. Ukuba usebenzisa umatshini , i-viscosity yokugqoka kufuneka ilinganiswe (usebenzisa umhloli we-viscosity okanye i-flow cup) kunye ne-viscosity inokulungiswa kunye ne-diluent.

• Amalungu ebhodi yesekethe kufuneka antywiliselwe ngokuthe nkqo kwitanki yokwambathisa ubuncinane umzuzu omnye de amaqamza anyamalale aze asuswe kancinane. Nceda uqaphele ukuba izihlanganisi akufanele zintywiliselwe ngaphandle kokuba zigqunywe ngononophelo. Ifilimu efanayo iya kubumba phezu kwebhodi yesekethe. Uninzi lwentsalela yepeyinti kufuneka impompoze umva ukusuka kwibhodi yesekethe ukuya kumatshini wokudipha. I-TFCF ineemfuno zokwaleka ezahlukeneyo. Isantya sokudipha ibhodi yesekethe okanye amacandelo akufuneki akhawuleze ukuphepha amaqamza agqithisileyo.

(6) Ukuba kukho uqweqwe olungaphezulu xa ulusebenzisa kwakhona emva kokudipha, lususe ulusu uze uqhubeke ulusebenzisa.

(7) Emva kokuxubha, beka ibhodi yesekethe flat kwisibiyeli kwaye ulungiselele ukunyanga. Kuyimfuneko ukutshisa ukukhawulezisa ukunyangwa kwengubo. Ukuba indawo yokugqoka ayilingani okanye iqulethe iibhubhu, kufuneka ibekwe phantsi kweqondo lokushisa kwegumbi ixesha elide ngaphambi kokuba uphilise kwisithando somlilo esiphezulu ukuvumela ukuba i-solvent ikhanyise.

Ukulumkela

1. Ngethuba lenkqubo yokutshiza, amanye amacandelo awakwazi ukutshizwa, njengale: indawo ephezulu yokutshatyalaliswa kobushushu okanye i-heat sink components, i-resistors yamandla, i-diodes yamandla, i-cement resistors, i-dip switch, i-resistors ehlengahlengiswayo, i-buzzers, i-battery holders, i-fuse holders. iityhubhu), abanini be-IC, iiswitshi zokuthintela, njl.

2. Akuvumelekanga ukugalela ipeyinti eshiyekileyo enobungqina obuthathu kwakhona kwisingxobo sokugcina. Kufuneka igcinwe yodwa kwaye itywinwe.

3. Ukuba igumbi lokusebenzela okanye igumbi logcino livaliwe ixesha elide (ngaphezu kweeyure eziyi-12), livule umoya kangangemizuzu eli-15 phambi kokuba ungene.

4. Ukuba ithe ngempazamo yachaphaza kwiiglasi, nceda uvule inkophe engaphezulu nesezantsi kwangoko kwaye uhlambe ngamanzi abalekayo okanye i-saline, emva koko ufune unyango.