Tshem tawm cov av / dents los ntawm pcb
Kauj ruam ntawm kev hle cov stains yog siv cov qauv tshuaj kom tshem tawm cov resin stains ntawm inner tooj liab txheej. Qhov no zoo ntawm cov pib tau pib los ntawm drilling qhov. Concave corrosion yog qhov kev tshem tawm stain, uas yuav cuam tshuam nrog "protrude" {{{{ Permanganate yog siv los ua oxidize resins thiab 'etch' lawv. Firstly yuav tsum tau o rau kev kho mob permanganate, thiab cov kauj ruam nruab nrab tuaj yeem tshem tawm cov seem tso cai. Iav Fiber Etching siv cov tshuaj sib txawv, feem ntau yog cov kua qaub mellof. Yog tias tsis tsim nyog siv, nws tuaj yeem ua ob hom Voids: Resin Stains ntawm ntxhib pore phab ntsa yuav muaj ua kua, uas tuaj yeem ua rau "tshuab hws".
Cov txheej txheej ntawm cov txheej sab hauv tooj liab tau tuaj yeem sib cais ntawm tooj liab / tooj liab plating txheej ntawm lub qhov nruab siab thaum lub qhov siab los yog kev soj ntsuam kub. Resin sib cais yuav ua rau kev nkhaus thiab tawg ntawm cov phab ntsa uas sib tsoo, nrog rau voids ntawm tooj liab plating txheej. Yog tias cov poov tshuaj permanganate tsis tawm thaum cov kauj ruam neutralation (thiab txo cov neeg sawv cev, thiab txo cov neeg sawv cev, thiab txo cov neeg sawv cev ntawm cov tshuaj tiv thaiv hydrazine lossis hydroxylamine feem ntau siv hauv kev tawm tsam txo qis.
PCB Drilling
Hnav tho kev lossis lwm yam tsis haum drilling tsis muaj zog yuav rhuav cov ntawv luam ntawm tooj liab thiab dielectric, sib nraus pleb. Fiberglass tej zaum kuj yuav ntuag dua li txiav. Txawm hais tias tus xov tooj tooj liab yuav muag los ntawm cov chaw cob nyob ntawm tsis yog tsuas yog siv lub zog ntawm lub zog ntawm tooj liab ntawv ci thiab lub resin. Ib qho piv txwv yog tias kev sib raug zoo ntawm Oxide txheej thiab cov ntawv ci ua kom zoo dua li qhov tsis muaj zog tshaj qhov ntawm cov roj oxide}}}}} txheej pcb cov laug cam. Nyob rau theem kub, kua muag tshwm sim ntawm sab smoother tog ntawm lub tooj liab ntawv ci, tshwj tsis yog "reverers kho ntawv nyiaj" yog siv.
Qhov kev sib koom ua haujlwm tsis muaj zog ntawm oxidized nto thiab daim ntawv kho semi kuj tseem tuaj yeem ua rau muaj kev phem dua "cov voj voos paj yeeb", qhov twg lub voj voos luam yeeb " Ntxheb borehole phab ntsa lossis ntxhib phab ntsa nrog cov voj liab tuaj yeem ua rau cov kab noj hniav dawb ntawm multi- edgeedge}} utge kab noj hniav lossis tshuab lub qhov ntswg. Lub "npoo ntoo kab noj hniav" yog thaum chiv thawj nyob ntawm qhov kev sib tshuam ua ke, thiab lawv lub npe cuam tshuam tias lawv muaj feem ntau yuav tau them rau cov kab hluav taws xob, uas feem ntau yuav tau them los ntawm cov txheej txheem hluav taws xob. Yog tias tus tooj liab txheej npog cov no grooves, muaj feem ntau noo noo qab lub tooj liab txheej. Hauv cov txheej txheem tom ntej xws li cua kub lev Raws li lawv qhov chaw nyob thiab cov duab, nws yog ib qho yooj yim kom paub meej thiab paub qhov txawv lawv ntawm lwm hom kab noj hniav.
Cov kauj ruam catalytic ua ntej cov tshuaj PCB
Lub suab sib thooj ntawm kev tshem tawm / pitting / tshuaj Tooj Liab Deposition thiab cov khoom lag luam tsis txaus ntawm txhua kauj ruam ywj siab kuj tsim nyog txiav txim siab. Cov neeg uas tau kawm voids nyob rau hauv pores pom zoo nrog kev sib koom ua ke ntawm kev siv tshuaj lom neeg siv tshuaj. Cov tsoos ua ntej-}}}}}}}}}}}}} }alysisalysisalysis), ua kom haum), ua kom haum, uas haum rau murpiy kuj. Piv txwv li, cov kho kom zoo, Cationic Polyester electrolyte siv los siv qhov kev xav tau zoo: dhau cov kev hloov pauv tau nyob rau hauv cov txheej txheem tsis zoo thiab cov adcesion; Tus neeg saib xyuas ntau dhau lawm tuaj yeem tsim cov yeeb yaj kiab, ua rau tsis zoo adhesion ntawm tooj liab tso tawm; Ua rau lub qhov ntsa phab ntsa kom rub tawm. Cov kev tiv thaiv tsis txaus ntawm tus neeg sawv cev hloov kho ua rau nws feem ntau yuav tshwm rau ntawm lub taub hau iav.
Nyob rau theem kub, qhib ntawm voids yog manifested nyob rau hauv txom nyem tooj liab kev pab them nqi lossis tsis muaj tooj liab ntawm lub iav fiber site. Lwm qhov ua rau voids hauv iav suav nrog tsis txaus etching ntawm lub iav, ntau dhau ntawm cov iav, muaj ntau yam kev ua haujlwm ntawm lub dab dej. Lwm yam uas cuam tshuam rau cov kev pab them nyiaj PD ua kom muaj qhov sib txawv, tej zaum yuav muaj cov kab ke, thiab lwm yam kev ua haujlwm, thiab kev ua kom haum, thiab tsawg ntawm lub dab dej.