PCB Defects thiab Kev Tswj Xyuas Zoo, raws li peb siv zog los tswj cov txheej txheem siab ntawm kev ua tau zoo thiab kev ua haujlwm zoo, nws yog ib qho tseem ceeb rau kev daws thiab txo qis cov kev tsim khoom PCB no.
Nyob rau txhua theem ntawm kev tsim khoom, cov teeb meem tuaj yeem tshwm sim uas ua rau muaj qhov tsis xws luag hauv lub rooj tsavxwm tiav. Cov kev tsis sib xws xws li vuam, kev puas tsuaj, kev sib kis, qhov tsis raug, qhov tsis zoo ntawm plating, cov txheej sab hauv tsis zoo, cov teeb meem drilling, thiab cov khoom siv teeb meem.
Cov teeb meem no tuaj yeem ua rau hluav taws xob luv luv, qhib Circuit Court, tsis zoo nkauj, txo kev ntseeg siab, thiab ua tiav PCB tsis ua haujlwm.
Kev tsim qauv tsis raug thiab kev tsim khoom sib txawv yog ob qho laj thawj tseem ceeb ntawm PCB qhov tsis xws luag.
Nov yog qee qhov laj thawj tseem ceeb ntawm PCB kev tsim khoom tsis xws luag:
1. Kev tsim tsis tsim nyog
Muaj ntau qhov teeb meem PCB tshwm sim los ntawm cov teeb meem tsim. Cov laj thawj feem ntau tsim muaj xws li qhov tsis txaus ntawm qhov sib txawv ntawm cov kab, cov voj me me nyob ib ncig ntawm lub qhov borehole, cov kab ntse ntse uas tshaj qhov muaj peev xwm tsim tau, thiab kev ua siab ntev rau cov kab nyias lossis qhov khoob uas tsis tuaj yeem ua tiav los ntawm cov txheej txheem tsim khoom.
Lwm cov piv txwv muaj xws li cov qauv symmetrical uas ua rau muaj kev pheej hmoo ntawm cov kua qaub, cov kab zoo uas tuaj yeem raug puas los ntawm electrostatic paug, thiab cov teeb meem kub dissipation.
Kev ua tiav Kev Tsim Qauv rau Kev Tsim Khoom (DFM) kev tshuaj xyuas thiab ua raws li cov txheej txheem tsim qauv PCB tuaj yeem tiv thaiv ntau yam kev tsim tawm vim qhov tsis xws luag.
Koom nrog cov kws tsim khoom tsim khoom hauv cov txheej txheem tsim pab ntsuas kev tsim khoom. Simulation thiab cov cuab yeej ua qauv kuj tuaj yeem txheeb xyuas tus qauv tsim kev ua siab ntev rau kev ntxhov siab hauv ntiaj teb tiag tiag thiab txheeb xyuas qhov teeb meem. Optimizing manufacturability tsim yog thawj kauj ruam tseem ceeb hauv kev txo qis kev tsim khoom PCB ntau.
2.PCB paug
Kev tsim PCB suav nrog kev siv ntau yam tshuaj thiab cov txheej txheem uas tuaj yeem ua rau muaj kev sib kis. Thaum lub sij hawm tsim khoom, PCBS tau yooj yim kis los ntawm cov ntaub ntawv xws li flux residues, ntiv tes roj, acid plating tov, particle khib nyiab thiab ntxuav cov residues.
Cov khoom tsis huv ua rau muaj kev pheej hmoo ntawm hluav taws xob luv luv, qhib circuits, vuam tsis xws luag, thiab teeb meem corrosion mus sij hawm ntev. Txo qhov kev pheej hmoo ntawm kev kis kab mob los ntawm kev ua kom cov chaw tsim khoom huv si huv si, tswj xyuas cov pa phem, thiab tiv thaiv tib neeg kev sib cuag. Kev cob qhia neeg ua haujlwm ntawm cov txheej txheem tuav kom raug kuj tseem ceeb heev.
3. cov khoom tsis xws luag
Cov khoom siv hauv PCB tsim yuav tsum tsis muaj qhov tsis xws luag. Cov ntaub ntawv tsis sib haum PCB (xws li cov laminates tsis zoo, prepregs, foils, thiab lwm yam khoom siv) tuaj yeem muaj qhov tsis xws li cov resin tsis txaus, iav fiber ntau protrusions, pinholes, thiab nodules.
Cov khoom siv tsis zoo no tuaj yeem muab tso rau hauv daim ntawv kawg thiab cuam tshuam rau kev ua haujlwm. Ua kom ntseeg tau tias tag nrho cov ntaub ntawv tau txais los ntawm cov chaw muag khoom muaj koob npe nrog kev tswj xyuas zoo tuaj yeem pab kom tsis txhob muaj teeb meem txog cov khoom siv. Kev tshuaj xyuas cov khoom tuaj kuj raug pom zoo.
Tsis tas li ntawd, kev puas tsuaj rau tib neeg, kev ua yuam kev ntawm tib neeg thiab cov txheej txheem kev hloov pauv tuaj yeem cuam tshuam rau pcb manufacturing.
Cov teeb meem tshwm sim hauv PCB kev tsim khoom vim yog tsim thiab tsim khoom. Kev nkag siab txog cov teeb meem PCB feem ntau ua rau cov chaw ua haujlwm tsom mus rau kev tiv thaiv thiab kev tshuaj xyuas cov phiaj xwm. Cov hauv paus ntsiab lus ceev faj yog ua raws li kev soj ntsuam tsim, tswj cov txheej txheem nruj me ntsis, cov neeg tsav tsheb ciav hlau, xyuas kom meej, tswj kev huv, taug qab cov laug cam thiab cov ntsiab lus tsis raug.