Lub PCB huv si yog qhov tseem ceeb rau kev ntseeg tau. Ntawv luam tawm hauv Circuit Court board tej zaum tej zaum yuav muaj plua plav los yog lwm yam kab mob thiab yuav tsum tau ntxuav. PCB qias neeg tuaj yeem cuam tshuam rau kev ua haujlwm zoo ntawm nws cov qauv tsim. Txawm hais tias koj lub rooj tsavxwm qias neeg vim raug cuam tshuam rau nws qhov chaw ua haujlwm, lossis vim tias nws cov ntim khoom lossis kev tiv thaiv tsis raug tiv thaiv zoo, nws yog ib qho tseem ceeb uas yuav tsum ua cov txheej txheem ntxuav kom zoo los txhim kho kev ntseeg tau.

Qhov qias neeg PCB cuam tshuam li cas

Plua plav yog cov khoom uas raug tshem tawm hauv huab cua. Nws yog complex nyob rau hauv cov xwm thiab feem ntau muaj ib tug sib tov ntawm inorganic ntxhia cov ntaub ntawv, dej-soluble ntsev, organic cov ntaub ntawv thiab ib tug me me dej.

Raws li SMT cov khoom ua rau me me thiab me me, qhov kev pheej hmoo ntawm kev ua tsis tiav vim muaj cov kab mob sib kis tau nce. Cov kev tshawb fawb tau pom meej meej tias cov plua plav ua rau cov kab hluav taws xob muaj kev cuam tshuam ntau dua rau cov dej tsis zoo, xws li poob ntawm qhov chaw rwb thaiv tsev, electrochemical migration, thiab corrosion.

Yuav ua li cas ntxuav PCB

Yuav tsum tau saib xyuas ntxiv thaum tu PCB. Kev ceev faj ESD yuav tsum tau txiav txim siab thiab yuav tsum tau txiav thiab ua rau hauv qhov chaw qhuav. Yog tias koj siv cov txheej txheem tu lossis cov txheej txheem tsis raug, lub rooj tsavxwm yuav tsis ua haujlwm tag nrho.

Ntxuav cov hmoov av

Rau cov plua plav, txoj hauv kev zoo tshaj plaws los tshem cov plua plav yog tshuab lub rooj tsavxwm kom huv si nrog cua compressed. Ceev faj ntawm qhov chaw rhiab uas yuav ua rau muaj kev puas tsuaj. Ib tug txhuam hniav yog lwm yam cuab yeej uas koj siv tau los tshem tawm cov plua plav.

Huv si flux

Circuit boards nrog residual flux AIDS yuav tsum tau ntxuav nrog saponifying tus neeg sawv cev. Rau amateurs thiab engineers, nws yog feem ntau los so cawv. Ib tug txhuam hniav tuaj yeem moistened nrog cawv thiab siv tau los txhuam cov dej. Thov nco ntsoov tias yog tias koj lub rooj tsavxwm welds tsis muaj dej ntxuav, nws yuav nyuaj rau tshem tawm thiab yuav tsum muaj lub tshuab ntxhua kom muaj zog.

Ntxuav cov corrosion

Siv baking soda los ntxuav me ntsis corrosion los ntawm roj teeb thiab lwm yam khoom. Nws tuaj yeem siv los tshem tawm cov av tsis muaj kev puas tsuaj rau lub rooj tsavxwm. Baking soda yog me ntsis abrasive thiab pab tshem tawm corrosion los yog residue uas yuav tsis yooj yim sua nrog cov cuab yeej yooj yim xws li txhuam nrog dej distilled. Nws kuj neutralizes acidity ntawm cov residue.