PCB pawg thawj coj saib yog dav siv nyob rau hauv electronics, computers, hluav taws xob khoom, mechanical khoom thiab lwm yam lag luam. Nws yog kev txhawb nqa ntawm cov khoom siv thiab feem ntau yog siv los txuas cov khoom siv hluav taws xob. Ntawm lawv, 4-txheej thiab 6-txheej Circuit Court boards yog feem ntau siv thiab dav siv. , Ntau theem ntawm PCB txheej tuaj yeem xaiv raws li kev lag luam kev lag luam.

Corrosion txheej txheem ntawm PCB Circuit Board:

Cov txheej txheem etching ntawm cov ntawv luam tawm Circuit Board feem ntau ua tiav hauv lub tank corrosion. Cov khoom siv etching yog ferric chloride. Cov tshuaj (FeCL3 concentration 30% -40%) yog pheej yig, cov tshuaj tiv thaiv corrosion qeeb qeeb, cov txheej txheem yooj yim los tswj, thiab nws yog siv tau Corrosion ntawm ib leeg thiab ob sab tooj liab clad laminates.

Cov tshuaj corrosive feem ntau yog ua los ntawm ferric chloride thiab dej. Cov ferric chloride yog cov khoom daj, thiab nws yooj yim rau nqus dej noo hauv huab cua, yog li nws yuav tsum tau muab kaw thiab khaws cia. Thaum npaj cov tshuaj ferric chloride, 40% ferric chloride thiab 60% dej feem ntau yog siv, tau kawg, ntau ferric chloride, los yog dej sov (tsis yog dej kub los tiv thaiv cov xim tsis poob) tuaj yeem ua rau cov tshuaj tiv thaiv sai dua Nco ntsoov tias ferric chloride yog corrosive. Sim tsis txhob kov koj cov tawv nqaij thiab khaub ncaws. Siv ib lub hnab yas pheej yig rau cov tshuaj tiv thaiv cov hlab ntsha, tsuas yog haum rau lub rooj tsavxwm.

Pib corrode PCB Circuit Board los ntawm ntug. Thaum cov ntawv ci tooj liab uas tsis tau pleev xim rau yog corroded, lub rooj tsav xwm hauv Circuit Court yuav tsum tau muab tshem tawm hauv lub sijhawm kom tsis txhob muaj cov xim pleev xim los ntawm cov khoom siv hluav taws xob. Lub sijhawm no, yaug nrog dej huv, thiab txhuam cov xim nrog cov xyoob chips los ntawm txoj kev (lub sijhawm no, cov xim tuaj yeem tawm ntawm cov kua thiab tshem tawm yooj yim dua). Yog tias nws tsis yooj yim rau khawb, tsuas yog yaug nrog dej kub. Tom qab ntawd so nws qhuav thiab txhuam nws nrog ntawv xuab zeb, nthuav tawm cov ntawv ci tooj liab, thiab cov ntawv luam tawm tau npaj txhij.

Tom qab cov ntawv luam tawm Circuit Board yog corroded, cov kev kho mob hauv qab no yuav tsum tau ua tom qab cov ntawv luam tawm Circuit Board yog corroded.

1. Tom qab tshem cov zaj duab xis, cov ntawv luam tawm Circuit Board uas tau muab yaug nrog dej huv yog tsau rau hauv dej kub rau ib lub sij hawm, thiab tom qab ntawd cov coated (pased) zaj duab xis tuaj yeem tev tawm. Qhov chaw uas tsis tau so tuaj yeem muab ntxuav nrog nyias kom txog thaum nws huv.

2. Tshem tawm cov oxide zaj duab xis. Thaum cov coated (pasted) zaj duab xis yog tev tawm, tom qab lub tshuab luam ntawv tau qhuav lawm, so lub rooj tsavxwm rov qab nrog ib daim ntaub dipped nyob rau hauv decontamination hmoov los so tawm cov oxide zaj duab xis ntawm daim ntawv tooj liab, thiaj li hais tias cov luam Circuit Court thiab soldering lub ci. xim ntawm tooj liab raug rau ntawm lub disk.

Nws yuav tsum tau muab sau tseg tias thaum so cov ntawv ci tooj liab nrog ib daim ntaub, nws yuav tsum tau muab so rau hauv ib qho chaw ruaj khov kom ua rau cov ntawv ci tooj liab muaj kev cuam tshuam tib yam, uas zoo nkauj dua. Yaug lub polished printed circuit board nrog dej thiab qhuav nws.

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