MuSMTpamusoro pegomo rekusangana maitiro, zvakasara zvinhu zvinogadzirwa panguva yePCB musanganosoldering inokonzerwa ne flux uye solder paste, iyo inosanganisira zvikamu zvakasiyana-siyana: organic materials uye ions inoparara.Iyo organic zvinhu zvinoodza zvakanyanya, uye maion akasara pane solder pads anogona kukonzera kukanganisa-pfupi.Uyezve, zvakawanda zvakasara zvinhu paPCBAbhodhi rinenge rakasviba uye harisi kusangana nezvinodiwa zvehutsanana zvemushandisi wekupedzisira.Nokudaro, hazvibviri kuchenesaPCBAboard.Zvisinei,PCBA mapurangahaifanirwe kucheneswa zvisina tsarukano, uye zvakaomesesa zvinodiwa uye zvidziviriro zvinofanirwa kuteverwa kana uchishandisa aPCBAmuchina wekuchenesa.
Heino tsananguro yakadzama yezvimwe zvinowanzoitika panguva yePCBA boardnzira yekuchenesa:
Chekutanga, mushure megungano uye soldering yebhodhi redunhu rakadhindwa zvikamu, kuchenesa kunofanira kuitwa nokukurumidza sezvinobvira kubvisa zvachose yakasara flux, solder, uye zvimwe zvinosvibisa kubva rakadhindwa redunhu bhodhi (nokuti kusara kunoyerera kuchaoma zvishoma nezvishoma nekufamba kwenguva, kuumba zvinhu zvinoparadza zvakadai sesimbi halide munyu).Kune rumwe rutivi, panguva yekuchenesa, zvakakosha kuti udzivise zvinokuvadza zvekuchenesa zvigadziri kupinda muzvikamu zvemagetsi zvisina kuvharwa zvachose kudzivirira kukuvadza kana kukuvadza kwakadzika kune zvikamu.
Mushure mekuchenesa zvakadhindwa zvikamu zvebhodhi redunhu, zvinofanira kuiswa muchoto pa40 ~ 50 ° C uye zvakabikwa kwemaminitsi makumi maviri ~ 30, uye zvikamu hazvifaniri kubatwa nemaoko asina maoko zvisati zvaoma zvachose.Mukuwedzera, nzira yekuchenesa haifaniri kukanganisaelectronic components, mavara, majoini ekutengesa, uye bhodhi redunhu rakadhindwa
Nguva yekutumira: Jan-22-2024