Yam dab tsi cuam tshuam rau tus nqi ntawm PCB tsim khoom? Nov yog lub ncauj lus zoo ntawm txhua tus neeg koom nrog hauv PCB kev lag luam. Nws tseem yog ib qho ntawm cov ncauj lus nquag hais hauv cov neeg siv khoom tawm tswv yim NCAB tau txais. Hauv kab ntawv no, peb yuav ua tib zoo saib seb yam dab tsi txiav txim siab tus nqi nyuaj ntawm PCB kev tsim khoom.

Zuag qhia tag nrho, 80% txog 90% ntawm tag nrho COST ntawm PCB tau ua tiav nyob rau sab saud ntawm cov khoom xa khoom, ua ntej tus neeg xa khoom (EMS cog, PCB chaw tsim khoom, thiab lwm yam) pom qhov kawg tsim ntawm PCB. Peb tuaj yeem faib cov nqi ntawm PCB kev tsim khoom ua ob pawg dav – “yam nyuaj tus nqi” thiab “yam raug nqi zais”.

Raws li rau qhov nyuaj tus nqi ntawm PCB kev tsim khoom, nws yuav tsum suav nrog qee qhov nqi pib, xws li qhov loj me ntawm PCB. Nws paub zoo tias qhov loj me ntawm PCB, yuav tsum muaj cov khoom siv ntau dua, yog li nce tus nqi. Yog tias peb siv lub hauv paus 2L phaj loj ntawm 2 × 2 ″ ua lub hauv paus, tom qab ntawd nce qhov loj mus rau 4 × 4 ″ yuav nce tus nqi ntawm cov khoom siv hauv paus los ntawm 4. Cov khoom siv xav tau tsis yog qhov tseem ceeb ntawm X thiab Y axis, tab sis kuj tseem nyob ntawm Z axis. Qhov no yog vim tias txhua lub rooj tsav xwm tseem ceeb ntxiv rau lamination xav tau cov ntaub ntawv ntxiv, ntxiv rau kev tuav cov ntaub ntawv, luam ntawv thiab kos duab, tshuaj xyuas AOI, tshuaj ntxuav tshuaj thiab nqi Browning, yog li ntxiv txheej ntxiv cov nqi khoom kawg.

Tib lub sijhawm, kev xaiv cov ntaub ntawv tseem yuav cuam tshuam rau tus nqi, tus nqi ntawm cov phaj siab (M4, M6, thiab lwm yam) yog siab dua li ntawm FR4 zoo tib yam. Feem ntau, peb pom zoo kom cov neeg siv khoom txheeb xyuas daim ntawv tshwj xeeb nrog kev xaiv “lossis cov khoom sib npaug”, yog li ntawd lub Hoobkas tuaj yeem faib cov khoom siv kom raug raws li qhov xav tau ntawm cov neeg siv khoom thiab zam kev siv daim ntawv ntev mus.

Qhov nyuaj ntawm PCB kuj cuam tshuam rau tus nqi. Thaum siv cov txheej txheem multilaminates thiab qhov muag tsis pom, faus, lossis qhov muag tsis pom qhov tsim tau ntxiv, tus nqi raug khi kom nce ntxiv. Cov kws tsim txuj ci yuav tsum tau paub tias kev siv lub qhov faus qhov qauv tsis yog tsuas yog ua kom lub voj voog drilling ntau ntxiv, tab sis kuj ua rau lub sijhawm ua kom nrawm dua. Txhawm rau ua kom qhov muag tsis pom, lub rooj tsav xwm hauv Circuit yuav tsum raug nias, drilled thiab electroplated ntau zaus, ua rau cov nqi tsim khoom nce ntxiv.

Lwm qhov tseem ceeb los txiav txim siab yog cov duab dhos ua si. Txoj hauv kev los sib dhos lub rooj tsavxwm yuav cuam tshuam rau kev siv cov khoom siv. Yog tias tsis tsim nyog, yuav muaj chaw ntau dhau ntawm lub rooj tsavxwm thiab txheej txheem txheej txheem, uas yuav ua rau cov khoom pov tseg tsis zoo. Qhov tseeb, txo qhov chaw nruab nrab ntawm cov laug cam thiab qhov loj ntawm cov txheej txheem tuaj yeem txhim kho kev siv lub rooj tsavxwm. Yog tias pawg thawj coj saib xyuas vaj huam sib luag tau tsim los ua plaub fab lossis duab plaub, v-txiav nrog “0” qhov sib nrug yuav ua rau siv cov laug cam ntau dua.

Kab dav kab sib nrug kuj tseem yog ib qho cuam tshuam rau tus nqi. Qhov me me ntawm kab dav thiab kab nrug, siab dua qhov xav tau ntawm lub Hoobkas txheej txheem muaj peev xwm, qhov nyuaj rau kev tsim khoom, muaj feem yuav tshwm sim cov khoom pov tseg. Yog tias daim phiaj tsim hluav taws xob tsim hluav taws xob ntev lossis hloov pauv, qhov yuav ua rau tsis ua tiav nce thiab tus nqi nce.

Tus lej thiab qhov loj ntawm qhov kuj cuam tshuam rau tus nqi. Qhov me me lossis ntau qhov ntau tuaj yeem ua rau tus nqi ntawm lub rooj tsav xwm hauv Circuit Court. Cov khoom me me kuj tseem muaj cov ntu me me, txwv cov naj npawb ntawm cov phiajcim hauv Circuit Court uas tuaj yeem siv rau hauv ib zaug xwb. Qhov luv luv ntawm qhov me ntsis qhov zawj kuj txwv tus naj npawb ntawm cov laug cam uas tuaj yeem siv tau ib zaug. Vim tias CNC drilling tshuab xav tau ntau txoj haujlwm, nqi zog kuj tseem tuaj yeem nce ntxiv. Ib qho ntxiv, qhov sib piv qhov siab yuav tsum tau txiav txim siab. Drilling qhov me me hauv cov phaj tuab kuj ua rau tus nqi nce ntxiv thiab xav tau kev tsim khoom ntawm lub hoobkas.

Qhov teeb meem nyuaj kawg yog PCB kev kho qhov chaw. Kev ua tiav tshwj xeeb xws li tawv tawv, kub kub lossis npib tsib xee palladium tuaj yeem ntxiv tus nqi ntxiv. Txhua qhov, kev xaiv koj ua thaum lub sijhawm PCB tsim theem tuaj yeem cuam tshuam rau tus nqi tsim khoom zaum kawg ntawm PCB. NCAB pom zoo tias PCB cov khoom lag luam koom nrog tsim cov khoom lag luam kom ntxov li sai tau los tiv thaiv kev siv nyiaj tsis tsim nyog tom qab.