Temperature Zones Rau Reflow Cub

Sep 15, 2023

Cov cheeb tsam kub rau reflow qhov cub

SMT reflow soldering preheating cheeb tsam

Thawj kauj ruam ntawm reflow soldering yog preheating. Preheating yog los qhib cov tshuaj txhuam hniav, zam qhov kev coj ua ua ntej los ntawm kev kub ceev ceev thaum dipping tin, thiab kub lub rooj tsavxwm PCB ntawm chav tsev kub sib npaug kom ua tiav lub hom phiaj kub. Thaum lub sij hawm ua cua sov, tus nqi cua sov yuav tsum tau tswj. Yog tias nws ceev heev, nws yuav ua rau thermal shock, uas yuav ua rau muaj kev puas tsuaj rau lub rooj tsavxwm thiab cov khoom siv; Yog tias nws qeeb dhau lawm, cov kuab tshuaj yuav tsis volatilize txaus, uas yuav cuam tshuam rau cov vuam zoo.

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SMT reflow soldering rwb thaiv tsev cheeb tsam

Qhov thib ob theem - lub tshav kub preservation theem, lub ntsiab lub hom phiaj yog kom stabilize qhov kub ntawm lub PCB board thiab ntau yam Cheebtsam nyob rau hauv lub reflow qhov cub, thiaj li hais tias qhov kub ntawm lub Cheebtsam tseem zoo ib yam. Vim tias qhov sib txawv ntawm cov khoom sib txawv, cov khoom loj yuav tsum muaj cua sov ntau dua thiab qeeb kom sov, thaum cov khoom me me ua kom sov sai. Muab sij hawm txaus nyob rau hauv qhov chaw txuag hluav taws xob los ua kom qhov kub thiab txias ntawm cov khoom loj tuaj nrog cov khoom me me, kom cov flux tuaj yeem ua rau tag nrho cov volatilized. Tsis txhob muaj cua npuas thaum soldering. Thaum kawg ntawm qhov kev txuag hluav taws xob, cov oxides ntawm cov ntaub qhwv, cov khoom siv thiab cov pins raug tshem tawm raws li kev ua ntawm flux, thiab qhov kub ntawm tag nrho lub rooj tsav xwm Circuit Court kuj nce mus txog qhov sib npaug. Tswv yim los ntawm Topco editor: Tag nrho cov khoom yuav tsum muaj qhov kub thiab txias nyob rau hauv qhov kawg ntawm ntu no, txwv tsis pub muaj ntau yam phem soldering phenomena yuav tshwm sim nyob rau hauv lub reflow seem vim qhov kub tsis sib xws ntawm txhua feem.

Reflow soldering cheeb tsam

Qhov kub ntawm lub rhaub nyob rau hauv qhov chaw reflow nce mus rau qhov siab tshaj plaws, thiab qhov kub thiab txias ntawm cov khoom siv tau nce mus rau qhov kub siab tshaj plaws. Nyob rau hauv txoj kev reflow seem, qhov kub ntawm qhov kub ntawm qhov sib txawv nrog cov khoom siv tshuaj siv. Qhov kub siab tshaj plaws feem ntau yog 210-230 degree . Lub sij hawm rov qab yuav tsum tsis txhob ntev dhau los tiv thaiv kev cuam tshuam tsis zoo ntawm cov khoom thiab PCB, uas yuav ua rau lub rooj tsav xwm Circuit Court ci Jiao li al.

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Reflow Soldering Cooling Zone

Nyob rau hauv theem kawg, qhov kub thiab txias yog txias hauv qab lub freezing point ntawm solder paste kom solidify lub solder sib koom. Qhov ceev ntawm qhov txias txias, qhov zoo dua qhov vuam. Yog tias qhov txias txias qeeb dhau lawm, cov khoom siv hlau eutectic ntau dhau yuav raug tsim tawm, thiab cov txheej txheem loj loj yuav yooj yim tshwm sim ntawm cov pob qij txha, uas yuav txo tau lub zog ntawm cov pob qij txha. Qhov ntsuas cua txias hauv thaj chaw txias yog feem ntau nyob ib puag ncig 4 degree / S, thiab qhov kub thiab txias yog 75 degree.

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