KwiSMTinkqubo yokuhlanganisa intaba, izinto ezishiyekileyo ziveliswa ngexeshaIndibano yePCBi-soldering ebangelwa yi-flux kunye ne-solder paste, ebandakanya amacandelo ahlukeneyo: izinto eziphilayo kunye ne-ion ezichithwayo.Izinto eziphilayo zigqwesa kakhulu, kwaye ii-ion ezishiyekileyo kwi-solder pads zingabangela iimpazamo ezimfutshane.Ukongeza, izinto ezininzi ezishiyekileyo kwiPCBAibhodi zimdaka ngokwentelekiso kwaye azihlangabezani neemfuno zococeko lomsebenzisi wokugqibela.Ngoko ke, akunakuphepheka ukucoca iPCBAibhodi.Nangona kunjalo,iibhodi PCBAAkufunekanga icocwe nje ngokungenamsebenzi, kwaye iimfuno ezingqongqo kunye nezilumkiso mazilandelwe xa kusetyenziswa aPCBAumatshini wokucoca.
Nantsi inkcazo eneenkcukacha yeminye imiba eqhelekileyo ngexesha leibhodi PCBAinkqubo yokucoca:
Okokuqala, emva kwendibano kunye nokuthengiswa kweibhodi yesekethe eprintiweyo amacandelo, ukucoca kufuneka kuqhutywe ngokukhawuleza ukuze kususwe ngokupheleleyo i-flux eseleyo, i-solder, kunye nezinye izinto ezingcolileyo ezivela kwibhodi yesekethe eprintiweyo (kuba i-residual flux iya kuba nzima ngokuthe ngcembe ekuhambeni kwexesha, ukwenza izinto ezinobungozi ezifana neetyuwa ze-metal halide).Ngakolunye uhlangothi, ngexesha lokucoca, kubalulekile ukuphepha ii-agent zokucoca ezinobungozi ekungeneni kumacandelo e-elektroniki angavalwanga ngokupheleleyo ukukhusela umonakalo okanye ukulimala okufihlakeleyo kumacandelo.
Emva kokucoca amacandelo ebhodi yesekethe eprintiweyo, kufuneka afakwe kwi-oven kwi-40 ~ 50 ° C kwaye abhaka imizuzu engama-20 ~ 30, kwaye amacandelo akufanele achukunyiswe ngezandla ezingenanto ngaphambi kokuba zome ngokupheleleyo.Ukongeza, inkqubo yokucoca akufanele ichaphazeleizixhobo ze-elektroniki, amanqaku, ii-solder joints, kunye nebhodi yesiphaluka eprintiweyo
Ixesha lokuposa: Jan-22-2024