Raws li kev siv thev naus laus zis, kev thov rau cov ntawv luam tawm Circuit Board (PCBs) txuas ntxiv mus. PCBs yog cov khoom tseem ceeb hauv cov khoom siv hluav taws xob uas txuas ntau yam khoom siv los tsim cov khoom siv hluav taws xob. Cov txheej txheem tsim khoom PCB suav nrog ntau cov kauj ruam, ib qho ntawm cov theem tseem ceeb yog etching, uas tso cai rau peb tshem tawm cov tooj liab tsis tsim nyog los ntawm qhov chaw ntawm lub rooj tsavxwm. Thaum cov kev lag luam etch daws tau yooj yim, koj tuaj yeem tsim koj tus kheej PCB etch daws hauv tsev. Hauv qhov blog no, peb yuav qhia koj txog cov txheej txheem, muab cov txiaj ntsig zoo thiab siv tau yooj yim rau txhua qhov koj xav tau PCB etching.
raw khoom:
Txhawm rau tsim cov tshuaj PCB hauv tsev, koj yuav xav tau cov khoom xyaw hauv qab no:
1. Hydrogen peroxide (3%): Ib yam khoom siv hauv tsev uas ua los ntawm oxidizing tus neeg sawv cev.
2. Hydrochloric acid (hydrochloric acid): Muaj nyob rau ntawm cov khw muag khoom kho vajtse feem ntau, nws yog siv los ntxuav.
3. Cov ntsev ntsev (sodium chloride): Lwm yam khoom siv hauv tsev uas tuaj yeem txhim kho cov txheej txheem etching.
4. Distilled dej: siv los dilute cov tshuaj thiab tswj nws qhov sib xws.
program:
Tam sim no, cia peb dhia mus rau hauv cov txheej txheem ntawm kev tsim cov tshuaj PCB etching hauv tsev:
1. Kev Nyab Xeeb Ua Ntej: Ua ntej pib, xyuas kom koj muaj cov khoom siv kev nyab xeeb tsim nyog xws li hnab looj tes, tsom iav, thiab qhov chaw muaj cua zoo. Cov tshuaj tuaj yeem ua rau muaj kev phom sij yog tias tsis ua haujlwm zoo, yog li siv kev ceev faj thoob plaws hauv tus txheej txheem.
2. Sib tov tshuaj: Ntxiv 100ml hydrogen peroxide (3%), 30ml hydrochloric acid thiab 15g ntsev rau hauv lub khob ntim. Do cov sib tov zoo kom txog thaum cov ntsev yog yaj tag.
3. Dilution: Tom qab sib tov cov ntsiab lus, dilute nrog li 300 ml ntawm distilled dej. Cov kauj ruam no yog qhov tseem ceeb rau kev tswj xyuas qhov zoo tshaj plaws etch sib xws.
4. Etching txheej txheem: Dip lub PCB rau hauv cov tshuaj etching, xyuas kom meej tias nws yog tag nrho submerged. Maj mam do cov tshuaj qee zaus los txhawb kev sib xyaw ua ke. Lub sij hawm Ech yuav txawv nyob ntawm qhov nyuaj thiab tuab ntawm cov kab tooj liab, tab sis feem ntau yog 10 mus rau 30 feeb.
5. Yaug thiab Ntxuav: Tom qab lub sij hawm etching xav tau, tshem tawm PCB los ntawm cov tshuaj etching thiab yaug kom huv si nyob rau hauv dej khiav kom tsis txhob etching txheej txheem. Siv txhuam txhuam los yog daim txhuam cev los ntxuav cov impurities seem ntawm lub rooj tsavxwm.
Tsim koj tus kheej PCB etching kev daws teeb meem hauv tsev muaj qhov pheej yig thiab yooj yim-rau-siv lwm txoj rau kev xaiv lag luam. Txawm li cas los xij, nws tseem ceeb heev uas yuav tsum nco ntsoov tias kev ua haujlwm nrog cov tshuaj yuav tsum tau ceev faj txog kev nyab xeeb. Ib txwm tuav cov ntaub ntawv no nyob rau hauv qhov chaw uas muaj cua zoo thiab hnav cov khoom tiv thaiv. Cov kev daws teeb meem hauv tsev PCB ua rau DIY electronics tej yaam num yooj yim thaum txuag nyiaj thiab txo cov khoom pov tseg. Yog li tso koj lub tswv yim thiab dhia mus rau hauv lub ntiaj teb ntawm PCB etching los ntawm kev nplij siab ntawm koj lub tsev!
Post lub sij hawm: Sep-04-2023