Dab tsi yog qhov kub ntawm SMD LED reflow soldering?
Tus nqi kub ntawm SMT reflow soldering yog txiav txim los ntawm ntau yam. Qhov sib txawv ntawm cov khoom, cov txheej txheem coj, thiab cov txheej txheem tsis muaj cov hmoov txhuas yuav muaj kev cuam tshuam zoo rau qhov kub thiab txias ntawm reflow soldering. Feem ntau ntawm lawv siv qhov ntsuas kub ntawm qhov muab los ntawm cov chaw tsim khoom siv tshuaj pleev ib ce, thiab tom qab ntawd debug qhov chaw raws li cov khoom siv tiag tiag thiab ib puag ncig.
Leaded txheej txheem: Lub melting point ntawm leaded solder paste yog 183 ° C. Feem ntau, qhov siab tshaj plaws kub ntawm reflow soldering yuav nce li ntawm 30 ° C, uas yog hais txog 210 ° C.
Cov txheej txheem tsis muaj txhuas: Lub melting point ntawm cov hmoov lead-dawb solder paste yog feem ntau 217 ° C. Feem ntau, qhov siab tshaj plaws kub ntawm reflow soldering yuav nce li ntawm 30 ° C, uas yog hais txog 245 ° C.
Qhov no yuav tsum yog raws li qhov xwm txheej tiag tiag, thiab qhov tseeb vuam ntev yuav tsum tsis txhob ntev dhau. Ntawm chav kawm, qhov kub thiab txias ntawm reflow soldering tsis tuaj yeem teeb tsa qhov kub ntawm reflow soldering. Tag nrho cov txheej txheem ntawm reflow soldering yog preheating cheeb tsam, soaking qhov kub thiab txias cheeb tsam, reflow soldering thiab txias cheeb tsam. Qhov ntsuas kub ntawm plaub qhov chaw kub no muaj qhov sib txawv loj.
