PCBA conformal coating spraying process inoyerera
Zvinoenderana nevatengi zvinoda, Cirket zvakare ine conformal coating service.PCBA conformal coating ine yakanakisa insulation, mwando-proof, leakage-proof, shock-proof, dust-proof, corrosion-proof, anti-kuchembera, mildew-proof, anti-part. kusunungura uye kuvhara corona resistance zvivakwa, izvo zvinogona kuwedzera nguva yekuchengetedza yePCBA. Cirket inogara ichishandisa Kupfapfaidza iyo zvakare ndiyo inonyanya kushandiswa yekubikira nzira muindasitiri.
Cirket PCBA conformal coating spraying process inoyerera
1. Zvishandiso zvinodiwa
Conformal coating pendi, pendi bhokisi, magurovhosi erabha, mask kana gasi mask, bhurashi, anonamira tepi, tweezers, ventilation mudziyo, drying rack uye oveni.
2. Kumwaya matanho
Kupenda A divi → kuomeswa kwepamusoro → pendi B divi → kurapa pasi petembiricha yemumba
3. Coating zvinodiwa
(1) Kuchenesa uye kuomesa bhodhi kuti ubvise unyoro uye mvura yePCBA. Iyo huruva, mwando uye mafuta pamusoro pePCBA inofanira kuvharwa inofanira kubviswa kutanga kuitira kuti kuvhara kunogona kuita zvakakwana kudzivirira kwayo. Kunyatso kuchenesa kunogona kuve nechokwadi kuti masara emarara abviswa zvachose uye conformal coating inonamira zvakanaka pamusoro pebhodhi redunhu. Kubika mamiriro: 60 ° C, 10-20 maminitsi. Mhedzisiro yakanakisa yekupfekedza kupfapfaidza kana bhodhi richipisa mushure mekubviswa muchoto.
(2) Paunenge uchikwesha iyo conformal coating, nzvimbo yekupfekedza inofanira kunge yakakura kupfuura nzvimbo inogarwa nezvikamu kuti ive nechokwadi chekuti zvikamu zvese nemapadhi zvakavharwa.
(3) Paunenge uchikwesha iyo conformal coating, bhodhi redunhu rinofanira kuiswa rakati sandara sezvinobvira. Hapafanirwe kudonha mushure mekukwesha. Iko kupfekedza kunofanira kuva kwakatsetseka uye hakufaniri kuva nezvikamu zvakafumurwa. Ukobvu hunofanira kuva pakati pe0.1-0.3mm.
(4) Vasati vakwesha kana kupfapfaidza conformal coating, vashandi veCirket vanova nechokwadi chekuti diluted conformal coating inonyandurwa uye inosiiwa kwemaawa maviri vasati vakwesha kana kupfapfaidza. Shandisa bhurashi remhando yepamusoro-soro kukwesha zvinyoro nyoro nekunyudza patembiricha yemumba. Kana ukashandisa muchina, viscosity yejasi inofanira kuyerwa (uchishandisa viscosity tester kana kuyerera kapu) uye viscosity inogona kugadziriswa ne diluent.
• Zvikamu zvebhodhi redunhu zvinofanirwa kunyudzwa zvakadzika mubhachi tanki zvishoma kusvika mapupu anyangarika uye ozobviswa zvishoma nezvishoma. Ndapota cherechedza kuti ma-connectors haafaniri kunyudzwa kunze kwekunge akanyatsovharwa. Firimu yunifomu ichaumba pamusoro pebhodhi redunhu. Zvizhinji zvependi zvakasara zvinofanirwa kuyerera zvichidzoka kubva kubhodhi redunhu kuenda kumushini wekudhibha. TFCF ine zvakasiyana coating zvinodiwa. Iko kumhanya kwekunyudza bhodhi redunhu kana zvikamu hazvifanirwe kunge zvakanyanya kukurumidza kudzivirira mabhuru akawandisa.
6
(7) Mushure mekukwesha, isa bhodhi redunhu rakafuratira pabhuraketi uye gadzirira kurapa. Izvo zvinodikanwa kupisa kuti ikurumidze kuporesa kwekuputira. Kana iyo yekuputira nzvimbo isina kuenzana kana ine mabhubhu, inofanirwa kuiswa pasi pekamuri tembiricha kwenguva yakareba isati yapora muchoto chepamusoro-soro kubvumira iyo solvent ichipenya kunze.
Zvekungwaririra
1. Munguva yekupfapfaidza, zvimwe zvikamu hazvigoni kupfapfaidzwa, zvakadai se: high-power heat dissipation surface kana heat sink components, power resistors, power diode, simenti resistors, dip switches, adjustable resistors, buzzers, bhatiri vanobata, fuse holders ( machubhu), IC vabati, kubata switch, nezvimwe.
2. Zvinorambidzwa kudira pendi yasara yehutatu-uchapupu zvakare mumudziyo wekutanga wekuchengetera. Inofanira kuchengetwa zvakasiyana uye yakavharwa.
3. Kana imba yekushanda kana imba yekuchengetera yakavharwa kwenguva yakareba (kupfuura maawa gumi nemaviri), ivhare iyo kwemaminitsi gumi nemashanu isati yapinda.
4. Kana ikasawarira mumagirazi, ndapota vhura ziso repamusoro nechepazasi pakarepo wogeza nemvura inoyerera kana saline, wobva watsvaga kurapwa.